[dev.fuzz] all: merge master (7764ee5) into dev.fuzz

Conflicts:

- api/next.txt

Merge List:

+ 2021-02-19 7764ee5614 runtime: fix invalid nil g check for for mips64x
+ 2021-02-19 87f425da14 cmd/go/internal/mvs: split Reqs into narrower per-function interfaces
+ 2021-02-19 4da0188c6c cmd/go/internal/modget: split resolveCandidates into two methods
+ 2021-02-19 5f2e24efb3 cmd/internal/diff: skip over Cygwin warning in diff output
+ 2021-02-19 ee7038f6a5 net: disable Windows netsh tests when netsh won't run
+ 2021-02-19 40765ffa95 os/exec: disable failing LookPathTest on windows/arm64
+ 2021-02-19 b445d6ea34 runtime/pprof: expect tests to pass on macOS
+ 2021-02-19 b110a43628 runtime: delete gosave (dead code)
+ 2021-02-19 474d5f4f4d math: remove most 387 implementations
+ 2021-02-19 c7c6c113be runtime: convert windows/arm64 assembly
+ 2021-02-19 3527caa7d6 runtime: initial windows/arm64 implementation files
+ 2021-02-19 427bd7599d runtime: generate windows/arm64 callback asm
+ 2021-02-19 f6c4b4bf96 syscall: add windows/arm64 support
+ 2021-02-19 ac024a0c7b cmd/vendor: get golang.org/x/sys@beda7e5e158
+ 2021-02-19 a3b97e7628 test: disable nilptr on windows/arm64
+ 2021-02-19 985d087782 cmd/link: add windows/arm64 support
+ 2021-02-19 95a44d2409 cmd/internal/objfile: recognize Windows ARM64 executables
+ 2021-02-19 0ca0551f02 debug/pe: recognize arm64 executables
+ 2021-02-19 0c633125f2 cmd/dist: add windows/arm64 support
+ 2021-02-19 bb6efb9609 build: set GOPATH consistently in run.bash, run.bat, run.rc
+ 2021-02-19 a1222b7535 cmd/link: add debug print in deadcode
+ 2021-02-19 1c659f2525 cmd/link: clean up windows PE generation
+ 2021-02-19 b6379f190b syscall: clean up windows a bit
+ 2021-02-19 09e059afb1 runtime: enable framepointer on all arm64
+ 2021-02-19 b19e7b518e runtime: clean up windows a bit
+ 2021-02-19 5421c37a1d runtime: fix windows/arm externalthreadhandler
+ 2021-02-19 91cc484ea9 runtime: fix time on windows/arm under WINE
+ 2021-02-19 38672d3dcf runtime: crash earlier on windows for runtime.abort
+ 2021-02-19 a1e9148e3d runtime: print hex numbers with hex prefixes in traceback debug
+ 2021-02-19 75e273fc2c runtime: fix windows/arm CONTEXT_CONTROL
+ 2021-02-19 76ab626bfc runtime: factor common code out of defs_windows_*.go
+ 2021-02-19 ece954d8b8 runtime: find g in Windows profiler using SP
+ 2021-02-19 a54f7fc0fd runtime: do not treat asmcgocall as a topofstack on g0
+ 2021-02-19 776ee4079a runtime: do not treat morestack as a topofstack
+ 2021-02-19 5ecd9e34df runtime: do not treat mcall as a topofstack
+ 2021-02-19 54da3ab385 runtime: use TOPFRAME to identify top-of-frame functions
+ 2021-02-19 fbe74dbf42 runtime: use FuncInfo SPWRITE flag to identify untraceable profile samples
+ 2021-02-19 4dd77bdc91 cmd/asm, cmd/link, runtime: introduce FuncInfo flag bits
+ 2021-02-19 aa0388f2ed runtime: remove unnecessary writes to gp.sched.g
+ 2021-02-19 6fe8981620 cmd/internal/obj/riscv: fix JMP name<>(SB)
+ 2021-02-19 01f05d8ff1 runtime: unify asmcgocall and systemstack traceback setup
+ 2021-02-19 229695a283 runtime: clean up funcID assignment
+ 2021-02-19 c80da0a33a runtime: handle nil gp in cpuprof
+ 2021-02-19 a78879ac67 runtime: move sys.DefaultGoroot to runtime.defaultGOROOT
+ 2021-02-19 8ac23a1f15 runtime: document, clean up internal/sys
+ 2021-02-19 678568a5cf runtime: delete windows setlasterror (unused)
+ 2021-02-19 0d94f989d1 runtime: clean up system calls during cgo callback init
+ 2021-02-19 e7ee3c1fa8 os: report Windows exit status in hex
+ 2021-02-18 eb982727e3 cmd/go/internal/mvs: fix Downgrade to match Algorithm 4
+ 2021-02-18 3b7277d365 cmd/go: add a script test for artifacts resulting from 'go get -u'
+ 2021-02-18 f3c2208e2c cmd/go: add script tests for potential upgrades due to downgrades
+ 2021-02-18 a5c8a15f64 cmd/go/internal/mvs: clarify and annotate test cases
+ 2021-02-18 a76efea1fe cmd/go/internal/mvs: don't emit duplicates from Req
+ 2021-02-18 609d82b289 cmd/dist: set GOARM=7 for windows/arm
+ 2021-02-18 f0be3cc547 runtime: unbreak linux/riscv64 following regabi merge
+ 2021-02-18 07ef313525 runtime/cgo: add cast in C code to avoid C compiler warning
+ 2021-02-17 2f0da6d9e2 go/types: revert "no 'declared but not used' errors for invalid var decls"
+ 2021-02-17 70c37ee7d0 cmd/compile/internal/test: gofmt abiutils_test.go
+ 2021-02-16 84825599dc all: merge branch dev.regabi (d3cd4830ad) into master
+ 2021-02-16 d3cd4830ad [dev.regabi] test: run abi/regabipragma test with -c=1
+ 2021-02-16 03cea563d1 [dev.regabi] all: merge master (5faf941) into dev.regabi
+ 2021-02-16 b8fb049c7a [dev.regabi] cmd/go: copy internal/abi in TestNewReleaseRebuildsStalePackagesInGOPATH
+ 2021-02-16 5faf941df0 internal/goversion: update Version to 1.17
+ 2021-02-16 ed55da46ab [dev.regabi] go/types: overlapping embedded interfaces requires go1.14
+ 2021-02-16 7696c94334 [dev.regabi] go/types: type alias decl requires go1.9
+ 2021-02-16 c2358a1ae7 [dev.regabi] runtime: stub out spillArgs and unspillArgs
+ 2021-02-16 8cfbf34dd9 internal/abi: set register count constants to zero for regabi experiment
+ 2021-02-16 6f3da9d2f6 README: pull gopher image from website
+ 2021-02-16 d28aae26b0 [dev.regabi] cmd/link: recognize internal/abi as runtime package
+ 2021-02-16 098504c73f cmd/link: generate trampoline for inter-dependent packages
+ 2021-02-16 1004a7cb31 runtime/metrics: update documentation to current interface
+ 2021-02-16 6530f2617f doc/go1.16: remove draft notice
+ 2021-02-16 353e111455 doc/go1.16: fix mismatched id attribute
+ 2021-02-16 e0215315f5 [dev.regabi] reflect: support for register ABI on amd64 for reflect.(Value).Call
+ 2021-02-16 f0d23c9dbb internal/poll: netpollcheckerr before sendfile
+ 2021-02-16 0cb3415154 doc: remove all docs not tied to distribution
+ 2021-02-16 626ef08127 doc: remove install.html and install-source.html
+ 2021-02-16 30641e36aa internal/poll: if copy_file_range returns 0, assume it failed
+ 2021-02-15 33d72fd412 doc/faq: update generics entry to reflect accepted proposal
+ 2021-02-15 852ce7c212 cmd/go: provide a more helpful suggestion for "go vet -?"
+ 2021-02-13 66c27093d0 cmd/link: fix typo in link_test.go
+ 2021-02-13 b81efb7ec4 [dev.regabi] go/types: add support for language version checking
+ 2021-02-13 a7e9b4b948 [dev.regabi] go/types: untyped shift counts must fit into uint
+ 2021-02-13 060fa49bd2 [dev.regabi] go/types: refuse excessively long constants
+ 2021-02-12 baa6c75dce [dev.regabi] internal/abi: add new internal/abi package for ABI constants
+ 2021-02-12 d1fd9a8863 [dev.regabi] all: merge master (ff0e93e) into dev.regabi
+ 2021-02-12 ff0e93ea31 doc/go1.16: note that package path elements beginning with '.' are disallowed
+ 2021-02-11 249da7ec02 CONTRIBUTORS: update for the Go 1.16 release
+ 2021-02-11 864d4f1c6b cmd/go: multiple small 'go help' fixes
+ 2021-02-11 26ceae85a8 spec: More precise wording in section on function calls.
+ 2021-02-11 930c2c9a68 cmd/go: reject embedded files that can't be packed into modules
+ 2021-02-11 e5b08e6d5c io/fs: allow backslash in ValidPath, reject in os.DirFS.Open
+ 2021-02-10 ed8079096f cmd/compile: mark concrete call of reflect.(*rtype).Method as REFLECTMETHOD
+ 2021-02-10 59703d53e2 [dev.regabi] cmd/link: stop using ABI aliases if wrapper is enabled
+ 2021-02-09 e9c9683597 cmd/go: suppress errors from 'go get -d' for packages that only conditionally exist
+ 2021-02-09 168d6a49a5 [dev.regabi] go/types: use 512 bits as max. integer precision
+ 2021-02-09 0a62067708 [dev.regabi] go/types: adjust importer to match compiler importer
+ 2021-02-09 1c58fcf7ed [dev.regabi] go/types: handle untyped constant arithmetic overflow
+ 2021-02-09 493363ccff [dev.regabi] go/types: must not import a package called "init"
+ 2021-02-09 e0ac989cf3 archive/tar: detect out of bounds accesses in PAX records resulting from padded lengths
+ 2021-02-09 c48d1503ba [dev.regabi] go/types: report unused packages in source order
+ 2021-02-09 813958f13c [dev.regabi] go/types: factor out sorting of methods
+ 2021-02-09 11d15c171b [dev.regabi] go/types: convert untyped arguments to delete
+ 2021-02-09 c9d6f45fec runtime/metrics: fix a couple of documentation typpos
+ 2021-02-09 cea4e21b52 io/fs: backslash is always a glob meta character
+ 2021-02-08 dc725bfb3c doc/go1.16: mention new vet check for asn1.Unmarshal
+ 2021-02-08 618e3c15bd [dev.regabi] go/types: consistently report nil type as "untyped nil"
+ 2021-02-08 50449de66a [dev.regabi] all: merge master (1901853) into dev.regabi
+ 2021-02-08 7b0dfb177f [dev.regabi] runtime: use g register in some assembly functions on AMD64
+ 2021-02-08 2e60c00f56 [dev.regabi] cmd/internal/obj/x86: use g register in stack bounds check
+ 2021-02-08 22f9e1ccbc [dev.regabi] runtime: initialize special registers before sigpanic
+ 2021-02-08 5d7dc53888 [dev.regabi] cmd/compile, runtime: reserve R14 as g registers on AMD64
+ 2021-02-08 1901853098 runtime/metrics: fix panic in readingAllMetric example
+ 2021-02-08 ed3e4afa12 syscall/plan9: remove spooky fd action at a distance
+ 2021-02-08 a21de9ec73 [dev.regabi] cmd/link: resolve symbol ABI in shared linkage
+ 2021-02-05 724d0720b3 doc/go1.16: add missed heading tag in vet section
+ 2021-02-05 b54cd94d47 embed, io/fs: clarify that leading and trailing slashes are disallowed
+ 2021-02-05 4516afebed testing/fstest: avoid symlink-induced failures in tester
+ 2021-02-05 8fa84772ba [dev.regabi] runtime: delete gosave function
+ 2021-02-05 946351d5a2 [dev.regabi] runtime: zero X15 in racecall
+ 2021-02-05 397a46a10a [dev.regabi] cmd/asm: define g register on AMD64
+ 2021-02-05 e79c2fd428 [dev.regabi] runtime: mark racecallbackthunk as ABIInternal
+ 2021-02-05 7cc6de59f2 [dev.regabi] runtime: don't mark rt0_go ABIInternal
+ 2021-02-05 63de211014 [dev.regabi] runtime/cgo: call setg_gcc in crosscall_amd64
+ 2021-02-04 120b819f45 [dev.regabi] go/types: report error for invalid main function signature
+ 2021-02-04 52d5cb2822 [dev.regabi] cmd/internal/obj: access Attribute atomically
+ 2021-02-04 bc451b5770 [dev.regabi] go/types: port check_test.go ergonomics from dev.typeparams
+ 2021-02-04 afd67f3334 [dev.regabi] go/types: no "declared but not used" errors for invalid var decls
+ 2021-02-04 8869086d8f runtime: fix typo in histogram.go
+ 2021-02-03 401d7e5a24 [dev.regabi] cmd/compile: reserve X15 as zero register on AMD64
+ 2021-02-03 bfc7418e6d [dev.regabi] runtime, syscall, etc.: mark Darwin syscall wrappers as ABIInternal
+ 2021-02-03 e491c6eea9 math/big: fix comment in divRecursiveStep
+ 2021-02-02 23b0c1f76e [dev.regabi] all: merge master (fca94ab) into dev.regabi
+ 2021-02-02 fca94ab3ab spec: improve the example in Type assertions section
+ 2021-02-02 98f8454a73 cmd/link: don't decode type symbol in shared library in deadcode
+ 2021-02-02 1426a571b7 cmd/link: fix off-by-1 error in findShlibSection
+ 2021-02-01 32e789f4fb test: fix incorrectly laid out instructions in issue11656.go
+ 2021-02-01 ca6999e27c [dev.regabi] test: add a test for inlining closures
+ 2021-02-01 0b6cfea634 doc/go1.16: document that on OpenBSD syscalls are now made through libc
+ 2021-02-01 26e29aa15a cmd/link: disable TestPIESize if CGO isn't enabled
+ 2021-02-01 6ac91e460c doc/go1.16: minor markup fixes
+ 2021-01-29 44361140c0 embed: update docs for proposal tweaks
+ 2021-01-29 68058edc39 runtime: document pointer write atomicity for memclrNoHeapPointers
+ 2021-01-28 c8bd8010ff syscall: generate readlen/writelen for openbsd libc
+ 2021-01-28 41bb49b878 cmd/go: revert TestScript/build_trimpath to use ioutil.ReadFile
+ 2021-01-28 725a642c2d runtime: correct syscall10/syscall10X on openbsd/amd64
+ 2021-01-28 4b068cafb5 doc/go1.16: document go/build/constraint package
+ 2021-01-28 376518d77f runtime,syscall: convert syscall on openbsd/arm64 to libc
+ 2021-01-27 aca22bddf2 [dev.regabi] cmd/compile: remove nested functions from expands_calls.go
+ 2021-01-27 667e08ba8c [dev.regabi] cmd/go: Use GOMAXPROCS to limit default build, compile parallelism
+ 2021-01-27 00f2ff5c94 api/go1.16: add go/build/constraint APIs
+ 2021-01-27 35334caf18 crypto/x509: remove leftover CertificateRequest field
+ 2021-01-27 a5a5e2c968 runtime: make sure to remove open-coded defer entries in all cases after a recover
+ 2021-01-27 8cfa01943a runtime: block console ctrlhandler when the signal is handled
+ 2021-01-27 ff9e8364c6 cmd/go: skip issue33139 when the 'cc' script command is unavailable
+ 2021-01-27 cd176b3615 runtime: switch runtime to libc for openbsd/arm64
+ 2021-01-27 6c8fbfbdcf runtime: convert openbsd/arm64 locking to libc
+ 2021-01-27 5cdf0da1bf syscall: clean up mkasm related changes
+ 2021-01-27 210f70e298 doc/go1.16: fix closing brace in .Export format
+ 2021-01-27 0f797f168d math: fix typo in sqrt.go code comment
+ 2021-01-26 9b636feafe [dev.regabi] cmd/compile: missing last patch set for cl286013
+ 2021-01-26 f7dad5eae4 [dev.regabi] cmd/compile: remove leftover code form late call lowering work
+ 2021-01-26 8634a234df runtime,syscall: convert syscall on openbsd/amd64 to libc
+ 2021-01-26 1d5e14632e os: further document limitations around naked file descriptors
+ 2021-01-25 5e4a0cdde3 [dev.regabi] all: merge master (bf0f7c9) into dev.regabi
+ 2021-01-26 cf263e9f77 os: correct names in CreateTemp and MkdirTemp doc comments
+ 2021-01-26 ce8b318624 net/http/fcgi: remove locking added to prevent a test-only race
+ 2021-01-25 bf0f7c9d78 doc/go1.16: mention os.DirFS in os section
+ 2021-01-25 deaf29a8a8 cmd/compile: fix order-of-assignment issue w/ defers
+ 2021-01-25 ad2ca26a52 doc/go1.16: mention os.DirEntry and types moved from os to io/fs
+ 2021-01-25 a51921fa5b doc/go1.16: mention new testing/iotest functions
+ 2021-01-25 e6b6d107f7 doc/go1.16: mention deprecation of io/ioutil
+ 2021-01-25 7eaaf28cae [dev.regabi] cmd/compile: disallow taking address of SSA'd values
+ 2021-01-25 96a276363b doc/go1.16: mention go/build changes
+ 2021-01-25 3d85c69a0b html/template: revert "avoid race when escaping updates template"
+ 2021-01-25 54514c6b28 cmd/go: fix TestScript/cgo_path, cgo_path_space when CC set
+ 2021-01-25 6f5e79f470 [dev.regabi] cmd/compile/internal: specify memory layout
+ 2021-01-25 cabffc199d [dev.regabi] cmd/compile/internal: add internal ABI specification
+ 2021-01-25 6de8443f3b doc/asm: add a section on go_asm.h, clean up go_tls.h section
+ 2021-01-25 6a4739ccc5 [dev.regabi] cmd/compile: enable rational constant arithmetic
+ 2021-01-25 be9612a832 [dev.regabi] os: disable TestDirFS until #42637 is fixed
+ 2021-01-25 8ee3d39838 [dev.regabi] cmd/go: workaround -race issue on ppc64le
+ 2021-01-25 54b251f542 lib/time, time/tzdata: update tzdata to 2021a
+ 2021-01-25 5a76c3d548 [dev.regabi] cmd/compile: modify abiutils for recently updated ABI
+ 2021-01-25 ff82cc971a os: force consistent mtime before running fstest on directory on Windows
+ 2021-01-25 044f937a73 doc/go1.16: fix WalkDir and Walk links
+ 2021-01-25 063c72f06d [dev.regabi] cmd/compile: backport changes from dev.typeparams (9456804)
+ 2021-01-23 b634f5d97a doc/go1.16: add crypto/x509 memory optimization
+ 2021-01-23 9897655c61 doc/go1.16: reword ambiguously parsable sentence
+ 2021-01-23 cd99385ff4 cmd/internal/obj/arm64: fix VMOVQ instruction encoding error
+ 2021-01-23 d05d6fab32 [dev.regabi] cmd/compile: replace ir.Name map with ir.NameSet for SSA 2
+ 2021-01-23 66ee8b158f runtime: restore cgo_import_dynamic for libc.so on openbsd
+ 2021-01-23 48badc5fa8 [dev.regabi] cmd/compile: fix escape analysis problem with closures
+ 2021-01-23 51e1819a8d [dev.regabi] cmd/compile: scan body of closure in tooHairy to check for disallowed nodes
+ 2021-01-22 25c39e4fb5 io/ioutil: fix example test for WriteFile to allow it to run in the playground
+ 2021-01-22 eb21b31e48 runtime: define dummy msanmove
+ 2021-01-22 3a778ff50f runtime: check for g0 stack last in signal handler
+ 2021-01-22 a2cef9b544 cmd/go: don't lookup the path for CC when invoking cgo
+ 2021-01-22 7e0a81d280 [dev.regabi] all: merge master (dab3e5a) into dev.regabi
+ 2021-01-22 dab3e5affe runtime: switch runtime to libc for openbsd/amd64
+ 2021-01-22 a1b53d85da cmd/go: add documentation for test and xtest fields output by go list
+ 2021-01-22 b268b60774 runtime: remove pthread_kill/pthread_self for openbsd
+ 2021-01-22 ec4051763d runtime: fix typo in mgcscavenge.go
+ 2021-01-22 7ece3a7b17 net/http: fix flaky TestDisableKeepAliveUpgrade
+ 2021-01-22 50cba0506f time: clarify Timer.Reset behavior on AfterFunc Timers
+ 2021-01-22 cf10e69f17 doc/go1.16: mention net/http.Transport.GetProxyConnectHeader
+ 2021-01-22 ec1b945265 doc/go1.16: mention path/filepath.WalkDir
+ 2021-01-22 11def3d40b doc/go1.16: mention syscall.AllThreadsSyscall
+ 2021-01-21 07b0235609 doc/go1.16: add notes about package-specific fs.FS changes
+ 2021-01-21 e2b4f1fea5 doc/go1.16: minor formatting fix
+ 2021-01-21 9f43a9e07b doc/go1.16: mention new debug/elf constants
+ 2021-01-21 3c2f11ba5b cmd/go: overwrite program name with full path
+ 2021-01-21 953d1feca9 all: introduce and use internal/execabs
+ 2021-01-21 b186e4d70d cmd/go: add test case for cgo CC setting
+ 2021-01-21 5a8a2265fb cmd/cgo: report exec errors a bit more clearly
+ 2021-01-21 46e2e2e9d9 cmd/go: pass resolved CC, GCCGO to cgo
+ 2021-01-21 3d40895e36 runtime: switch openbsd/arm64 to pthreads
+ 2021-01-21 d95ca91380 crypto/elliptic: fix P-224 field reduction
+ 2021-01-21 d7e71c01ad [dev.regabi] cmd/compile: replace ir.Name map with ir.NameSet for dwarf
+ 2021-01-21 5248f59a22 [dev.regabi] cmd/compile: replace ir.Name map with ir.NameSet for SSA
+ 2021-01-21 970d8b6cb2 [dev.regabi] cmd/compile: replace ir.Name map with ir.NameSet in inlining
+ 2021-01-21 68a4664475 [dev.regabi] cmd/compile: remove tempAssigns in walkCall1
+ 2021-01-21 fd9a391cdd [dev.regabi] cmd/compile: remove CallExpr.Rargs
+ 2021-01-21 19a6db6b63 [dev.regabi] cmd/compile: make sure mkcall* passed non-nil init
+ 2021-01-21 9f036844db [dev.regabi] cmd/compile: use ir.DoChildren directly in inlining
+ 2021-01-21 213c3905e9 [dev.regabi] cmd/compile: use node walked flag to prevent double walk for walkSelect
+ 2021-01-20 1760d736f6 [dev.regabi] cmd/compile: exporting, importing, and inlining functions with OCLOSURE
+ 2021-01-20 ecf4ebf100 cmd/internal/moddeps: check content of all modules in GOROOT
+ 2021-01-20 92cb157cf3 [dev.regabi] cmd/compile: late expansion of return values
+ 2021-01-20 d2d155d1ae runtime: don't adjust timer pp field in timerWaiting status
+ 2021-01-20 803d18fc6c cmd/go: set Incomplete field on go list output if no files match embed
+ 2021-01-20 6e243ce71d cmd/go: have go mod vendor copy embedded files in subdirs
+ 2021-01-20 be28e5abc5 cmd/go: fix mod_get_fallback test
+ 2021-01-20 928bda4f4a runtime: convert openbsd/amd64 locking to libc
+ 2021-01-19 824f2d635c cmd/go: allow go fmt to complete when embedded file is missing
+ 2021-01-19 0575e35e50 cmd/compile: require 'go 1.16' go.mod line for //go:embed
+ 2021-01-19 9423d50d53 [dev.regabi] cmd/compile: use '%q' for printing rune values less than 128
+ 2021-01-19 ccb2e90688 cmd/link: exit before Asmb2 if error
+ 2021-01-19 ca5774a5a5 embed: treat uninitialized FS as empty
+ 2021-01-19 d047c91a6c cmd/link,runtime: switch openbsd/amd64 to pthreads
+ 2021-01-19 61debffd97 runtime: factor out usesLibcall
+ 2021-01-19 9fed39d281 runtime: factor out mStackIsSystemAllocated
+ 2021-01-19 a2f825c542 [dev.regabi] cmd/compile: directly create go.map and go.track symbols
+ 2021-01-19 4a4212c0e5 [dev.regabi] cmd/compile: refactor Linksym creation
+ 2021-01-19 4f5c603c0f [dev.regabi] cmd/compile: cleanup callTargetLSym
+ 2021-01-18 dbab079835 runtime: free Windows event handles after last lock is dropped
+ 2021-01-18 5a8fbb0d2d os: do not close syscall.Stdin in TestReadStdin
+ 2021-01-18 422f38fb6c [dev.regabi] cmd/compile: move stack objects to liveness
+ 2021-01-18 6113db0bb4 [dev.regabi] cmd/compile: convert OPANIC argument to interface{} during typecheck
+ 2021-01-18 4c835f9169 [dev.regabi] cmd/compile: use LinksymOffsetExpr in TypePtr/ItabAddr
+ 2021-01-18 0ffa1ead6e [dev.regabi] cmd/compile: use *obj.LSym instead of *ir.Name for staticdata functions
+ 2021-01-17 7e0fa38aad [dev.regabi] cmd/compile: remove unneeded packages from ir.Pkgs
+ 2021-01-17 99a5db11ac [dev.regabi] cmd/compile: use LinksymOffsetExpr in walkConvInterface
+ 2021-01-17 87845d14f9 [dev.regabi] cmd/compile: add ir.TailCallStmt
+ 2021-01-17 e3027c6828 [dev.regabi] cmd/compile: fix linux-amd64-noopt builder
+ 2021-01-17 59ff93fe64 [dev.regabi] cmd/compile: rename NameOffsetExpr to LinksymOffsetExpr
+ 2021-01-17 82b9cae700 [dev.regabi] cmd/compile: change ir.NameOffsetExpr to use *obj.LSym instead of *Name
+ 2021-01-17 88956fc4b1 [dev.regabi] cmd/compile: stop analyze NameOffsetExpr.Name_ in escape analysis
+ 2021-01-17 7ce2a8383d [dev.regabi] cmd/compile: simplify stack temp initialization
+ 2021-01-17 ba0e8a92fa [dev.regabi] cmd/compile: refactor temp construction in walk
+ 2021-01-17 78e5aabcdb [dev.regabi] cmd/compile: replace Node.HasCall with walk.mayCall
+ 2021-01-16 6de9423445 [dev.regabi] cmd/compile: cleanup OAS2FUNC ordering
+ 2021-01-16 a956a0e909 [dev.regabi] cmd/compile, runtime: fix up comments/error messages from recent renames
+ 2021-01-16 ab3b67abfd [dev.regabi] cmd/compile: remove ONEWOBJ
+ 2021-01-16 c9b1445ac8 [dev.regabi] cmd/compile: remove TypeAssertExpr {Src,Dst}Type fields
+ 2021-01-15 682a1d2176 runtime: detect errors in DuplicateHandle
+ 2021-01-15 9f83418b83 cmd/link: remove GOROOT write in TestBuildForTvOS
+ 2021-01-15 ec9470162f cmd/compile: allow embed into any string or byte slice type
+ 2021-01-15 54198b04db cmd/compile: disallow embed of var inside func
+ 2021-01-15 b386c735e7 cmd/go: fix go generate docs
+ 2021-01-15 bb5075a525 syscall: remove RtlGenRandom and move it into internal/syscall
+ 2021-01-15 1deae0b597 os: invoke processKiller synchronously in testKillProcess
+ 2021-01-15 03a875137f [dev.regabi] cmd/compile: unexport reflectdata.WriteType
+ 2021-01-15 14537e6e54 [dev.regabi] cmd/compile: move stkobj symbol generation to SSA
+ 2021-01-15 ab523fc510 [dev.regabi] cmd/compile: don't promote Byval CaptureVars if Addrtaken
+ 2021-01-15 ff196c3e84 crypto/x509: update iOS bundled roots to version 55188.40.9
+ 2021-01-15 b7a698c73f [dev.regabi] test: disable test on windows because expected contains path separators.
+ 2021-01-15 4be7af23f9 [dev.regabi] cmd/compile: fix ICE during ir.Dump
+ 2021-01-14 e125ccd10e cmd/go: in 'go mod edit', validate versions given to -retract and -exclude
+ 2021-01-14 eb330020dc cmd/dist, cmd/go: pass -arch for C compilation on Darwin
+ 2021-01-14 84e8a06f62 cmd/cgo: remove unnecessary space in cgo export header
+ 2021-01-14 0c86b999c3 cmd/test2json: document passing -test.paniconexit0
+ 2021-01-14 9135795891 cmd/go/internal/load: report positions for embed errors
+ 2021-01-14 35b9c66601 [dev.regabi] cmd/compile,cmd/link: additional code review suggestions for CL 270863
+ 2021-01-14 d9b79e53bb cmd/compile: fix wrong complement for arm64 floating-point comparisons
+ 2021-01-14 c73232d08f cmd/go/internal/load: refactor setErrorPos to PackageError.setPos
+ 2021-01-14 6aa28d3e06 go/build: report positions for go:embed directives
+ 2021-01-14 9734fd482d [dev.regabi] cmd/compile: use node walked flag to prevent double walk for walkSwitch
+ 2021-01-14 f97983249a [dev.regabi] cmd/compile: move more PAUTOHEAP to SSA construction
+ 2021-01-14 4476300425 [dev.regabi] cmd/compile: use byte for CallExpr.Use
+ 2021-01-14 5a5ab24689 [dev.regabi] cmd/compile: do not rely on CallExpr.Rargs for detect already walked calls
+ 2021-01-14 983ac4b086 [dev.regabi] cmd/compile: fix ICE when initializing blank vars
+ 2021-01-13 7eb31d999c cmd/go: add hints to more missing sum error messages
+ 2021-01-13 d6d4673728 [dev.regabi] cmd/compile: fix GOEXPERIMENT=regabi builder
+ 2021-01-13 c41b999ad4 [dev.regabi] cmd/compile: refactor abiutils from "gc" into new "abi"
+ 2021-01-13 861707a8c8 [dev.regabi] cmd/compile: added limited //go:registerparams pragma for new ABI dev
+ 2021-01-13 c1370e918f [dev.regabi] cmd/compile: add code to support register ABI spills around morestack calls
+ 2021-01-13 2abd24f3b7 [dev.regabi] test: make run.go error messages slightly more informative
+ 2021-01-13 9a19481acb [dev.regabi] cmd/compile: make ordering for InvertFlags more stable
+ 2021-01-12 d9acf6f3a3 [dev.regabi] cmd/compile: remove Func.ClosureType
+ 2021-01-12 41352fd401 [dev.regabi] cmd/compile: transform closures during walk
+ 2021-01-12 d6ad88b4db [dev.regabi] cmd/compile: compile functions before closures
+ 2021-01-12 432f9ffb11 [dev.regabi] cmd/compile: unindent compileFunctions
+ 2021-01-12 cc90e7a51e [dev.regabi] cmd/compile: always use the compile queue
+ 2021-01-12 cd5b74d2df [dev.regabi] cmd/compile: call NeedFuncSym in InitLSym
+ 2021-01-12 ba76567bc2 cmd/go/internal/modload: delete unused *mvsReqs.next method
+ 2021-01-12 665def2c11 encoding/asn1: document unmarshaling behavior for IMPLICIT string fields
+ 2021-01-12 95acd8121b [dev.regabi] cmd/compile: remove Name.Typegen
+ 2021-01-12 12ee55ba7b [dev.regabi] cmd/compile: stop using Vargen for import/export
+ 2021-01-12 b4d2a0445b [dev.regabi] cmd/compile: refactor closure var setup/teardown
+ 2021-01-12 f57f484053 [dev.regabi] cmd/compile: decouple escape analysis from Name.Vargen
+ 2021-01-11 81ea89adf3 cmd/go: fix non-script staleness checks interacting badly with GOFLAGS
+ 2021-01-11 759309029f doc: update editors.html for Go 1.16
+ 2021-01-11 c3b4c7093a cmd/internal/objfile: don't require runtime.symtab symbol for XCOFF
+ 2021-01-10 7fd84c6e46 [dev.regabi] cmd/compile: remove OCLOSUREREAD
+ 2021-01-10 c9c26d7ffb [dev.regabi] cmd/compile: use ClosureVars for method value wrappers
+ 2021-01-10 950cf4d46c [dev.regabi] cmd/compile: bind closure vars during SSA constructions
+ 2021-01-10 8b2efa990b [dev.regabi] cmd/compile: deref PAUTOHEAPs during SSA construction
+ 2021-01-08 59bfc18e34 cmd/go: add hint to read 'go help vcs' to GOVCS errors
+ 2021-01-08 6ee9b118a2 [dev.regabi] cmd/compile: remove fmt_test code; it has outlived its usefulness
+ 2021-01-08 cd6f3a54e4 cmd/go: revise 'go help' documentation for modules
+ 2021-01-08 6192b98751 cmd/go: make hints in error messages more consistent
+ 2021-01-08 25886cf4bd cmd/go: preserve sums for indirect deps fetched by 'go mod download'
+ 2021-01-08 6250833911 runtime/metrics: mark histogram metrics as cumulative
+ 2021-01-08 8f6a9acbb3 runtime/metrics: remove unused StopTheWorld Description field
+ 2021-01-08 6598c65646 cmd/compile: fix exponential-time init-cycle reporting
+ 2021-01-08 fefad1dc85 test: fix timeout code for invoking compiler
+ 2021-01-08 6728118e0a cmd/go: pass signals forward during "go tool"
+ 2021-01-08 e65c543f3c go/build/constraint: add parser for build tag constraint expressions
+ 2021-01-08 0c5afc4fb7 testing/fstest,os: clarify racy behavior of TestFS
+ 2021-01-08 32afcc9436 runtime/metrics: change unit on *-by-size metrics to match bucket unit
+ 2021-01-08 c6513bca5a io/fs: minor corrections to Glob doc
+ 2021-01-08 b241938e04 [dev.regabi] cmd/compile: fix some methods error text
+ 2021-01-08 304f769ffc cmd/compile: don't short-circuit copies whose source is volatile
+ 2021-01-08 ae97717133 runtime,runtime/metrics: use explicit histogram boundaries
+ 2021-01-08 a9ccd2d795 go/build: skip string literal while findEmbed
+ 2021-01-08 d92f8add32 archive/tar: fix typo in comment
+ 2021-01-08 cab1202183 cmd/link: accept extra blocks in TestFallocate
+ 2021-01-08 ee4d32249b io/fs: minor corrections to Glob release date
+ 2021-01-08 54bd1ccce2 cmd: update to latest golang.org/x/tools
+ 2021-01-07 9ec21a8f34 Revert "reflect: support multiple keys in struct tags"
+ 2021-01-07 091414b5b7 io/fs: correct WalkDirFunc documentation
+ 2021-01-07 9b55088d6b doc/go1.16: add release note for disallowing non-ASCII import paths
+ 2021-01-07 fa90aaca7d cmd/compile: fix late expand_calls leaf type for OpStructSelect/OpArraySelect
+ 2021-01-07 7cee66d4cb cmd/go: add documentation for Embed fields in go list output
+ 2021-01-07 e60cffa4ca html/template: attach functions to namespace
+ 2021-01-07 6da2d3b7d7 cmd/link: fix typo in asm.go
+ 2021-01-07 df81a15819 runtime: check mips64 VDSO clock_gettime return code
+ 2021-01-06 4787e906cf crypto/x509: rollback new CertificateRequest fields
+ 2021-01-06 c9658bee93 cmd/go: make module suggestion more friendly
+ 2021-01-06 4c668b25c6 runtime/metrics: fix panic message for Float64Histogram
+ 2021-01-06 d2131704a6 net/http/httputil: fix deadlock in DumpRequestOut
+ 2021-01-05 3e1e13ce6d cmd/go: set cfg.BuildMod to "readonly" by default with no module root
+ 2021-01-05 0b0d004983 cmd/go: pass embedcfg to gccgo if supported
+ 2021-01-05 cb05a0aa6a [dev.regabi] cmd/compile: remove toolstash scaffolding
+ 2021-01-05 9821838832 [dev.regabi] cmd/compile: remove CaptureVars
+ 2021-01-05 fd43831f44 [dev.regabi] cmd/compile: reimplement capture analysis
+ 2021-01-05 fb69c67cad [dev.regabi] test: enable finalizer tests on !amd64
+ 2021-01-05 1b85e7c057 cmd/go: don't scan gccgo standard library packages for imports
+ 2021-01-05 81f4f0e912 [dev.regabi] cmd/compile: remove race-y check in Name.Canonical
+ 2021-01-05 6b37b15d95 runtime: don't take allglock in tracebackothers
+ 2021-01-05 4a9d9adea4 [dev.regabi] cmd/compile: remove initname function
+ 2021-01-05 77365c5ed7 [dev.regabi] cmd/compile: add Name.Canonical and move Byval
+ 2021-01-05 e09783cbc0 [dev.regabi] cmd/compile: make ir.StaticValue safer
+ 2021-01-05 9aa950c407 [dev.regabi] cmd/compile: make ir.OuterValue safer
+ 2021-01-05 eb626409d1 [dev.regabi] cmd/compile: simplify CaptureVars
+ 2021-01-05 c28ca67a96 [dev.regabi] cmd/compile: fix ir.Dump for []*CaseClause, etc
+ 2021-01-04 9eef49cfa6 math/rand: fix typo in comment
+ 2021-01-04 b01fb2af9e testing/fstest: fix typo in error message
+ 2021-01-04 f24e40c14a [dev.regabi] cmd/compile: remove Name.Class_ accessors
+ 2021-01-04 d89705e087 [dev.regabi] cmd/compile: fix re-export of parameters
+ 2021-01-04 290b4154b7 [dev.regabi] cmd/compile: fix ICE due to large uint64 constants
+ 2021-01-04 a30fd52884 [dev.regabi] cmd/compile: use ir.NewNameAt in SubstArgTypes
+ 2021-01-03 8fc44cf0fa [dev.regabi] cmd/compile: remove a couple CloneName calls
+ 2021-01-03 907a4bfdc7 [dev.regabi] cmd/compile: fix map assignment order
+ 2021-01-03 f2e6dab048 [dev.regabi] cmd/compile: remove walkReturn "common case" path
+ 2021-01-03 d36a6bf44d [dev.regabi] cmd/compile: improve walkReturn common case
+ 2021-01-03 a317067d65 [dev.regabi] cmd/compile: improve ascompatee
+ 2021-01-03 5d80a590a2 [dev.regabi] cmd/compile: simplify walkReturn
+ 2021-01-03 bb1b6c95c2 [dev.regabi] cmd/compile: remove Node.{,Set}Walkdef
+ 2021-01-03 57c426c9a5 [dev.regabi] cmd/compile: tighten typecheckdef to *ir.Name
+ 2021-01-03 b1747756e3 [dev.regabi] cmd/compile: reorganize escape analysis somewhat
+ 2021-01-02 f2538033c0 [dev.regabi] cmd/compile: remove Nodes.Set [generated]
+ 2021-01-02 2f2d4b4e68 [dev.regabi] cmd/compile: remove {Ptr,Set}Init from Node interface
+ 2021-01-01 3dd5867605 doc: 2021 is the Year of the Gopher
+ 2021-01-01 1544a03198 [dev.regabi] cmd/compile: refactor redundant type conversion [generated]
+ 2021-01-01 7958a23ea3 [dev.regabi] cmd/compile: use *ir.Name where possible in inl.go
+ 2021-01-01 bfa97ba48f [dev.regabi] test: add another closure test case
+ 2021-01-01 67ad695416 [dev.regabi] cmd/compile: split escape analysis state
+ 2021-01-01 fad9a8b528 [dev.regabi] cmd/compile: simplify inlining of closures
+ 2021-01-01 7d55669847 [dev.regabi] cmd/compile: simplify dwarfgen.declPos
+ 2021-01-01 9ed1577779 [dev.regabi] cmd/compile: remove Func.ClosureEnter
+ 2021-01-01 ece345aa69 [dev.regabi] cmd/compile: expand documentation for Func.Closure{Vars,Enter}
+ 2021-01-01 6ddbc75efd [dev.regabi] cmd/compile: earlier deadcode removal
+ 2021-01-01 68e6fa4f68 [dev.regabi] cmd/compile: fix package-initialization order
+ 2021-01-01 3a4474cdfd [dev.regabi] cmd/compile: some more manual shuffling
+ 2021-01-01 0f1d2129c4 [dev.regabi] cmd/compile: reshuffle type-checking code [generated]
+ 2021-01-01 b8fd3440cd [dev.regabi] cmd/compile: report unused variables during typecheck
+ 2021-01-01 fd22df9905 [dev.regabi] cmd/compile: remove idempotent Name() calls [generated]
+ 2020-12-31 dfbcff80c6 [dev.regabi] cmd/compile: make copyExpr return *ir.Name directly
+ 2020-12-31 77fd81a3e6 [dev.regabi] cmd/compile: use names for keep alive variables in function call
+ 2020-12-31 8fe1197654 [dev.regabi] cmd/compile: remove Name.orig
+ 2020-12-31 477b049060 [dev.regabi] cmd/compile: fix printing of method expressions
+ 2020-12-31 95ce805d14 io/fs: remove darwin/arm64 special condition
+ 2020-12-30 20d0991b86 lib/time, time/tzdata: update tzdata to 2020f
+ 2020-12-30 ed301733bb misc/cgo/testcarchive: remove special flags for Darwin/ARM
+ 2020-12-30 0ae2e032f2 misc/cgo/test: enable TestCrossPackageTests on darwin/arm64
+ 2020-12-30 178c667db2 [dev.regabi] cmd/compile: fix OSLICEARR comments
+ 2020-12-30 f0d99def5b [dev.regabi] cmd/compile: add newline to ir.Dump
+ 2020-12-30 451693af71 [dev.regabi] cmd/compile: simplify typecheckdef
+ 2020-12-30 0c1a899a6c [dev.regabi] cmd/compile: fix defined-pointer method call check
+ 2020-12-30 f9b67f76a5 [dev.regabi] cmd/compile: change ir.DoChildren to use bool result type
+ 2020-12-30 499851bac8 [dev.regabi] cmd/compile: generalize ir/mknode.go
+ 2020-12-30 82ab3d1448 [dev.regabi] cmd/compile: use *ir.Name for Decl.X
+ 2020-12-30 9958b7ed3e [dev.regabi] cmd/compile: unexport ir.FmtNode
+ 2020-12-29 780b4de16b misc/ios: fix wording for command line instructions
+ 2020-12-29 b4a71c95d2 doc/go1.16: reference misc/ios/README for how to build iOS programs
+ 2020-12-29 f83e0f6616 misc/ios: add to README how to build ios executables
+ 2020-12-29 f5816624cd [dev.regabi] cmd/compile: change AddrExpr.Alloc to AddrExpr.Prealloc
+ 2020-12-29 850aa7c60c [dev.regabi] cmd/compile: use *ir.Name instead of ir.Node for CaseClause.Var
+ 2020-12-29 37babc97bb [dev.regabi] cmd/compile: allow visitor visits *ir.Name
+ 2020-12-29 5cf3c87fa6 [dev.regabi] cmd/compile: generate case/comm clause functions in mknode.go
+ 2020-12-29 b3e1ec97fd [dev.regabi] cmd/compile: move new addrtaken bit back to the old name
+ 2020-12-29 0620c674dd [dev.regabi] cmd/compile: remove original addrtaken bit
+ 2020-12-29 0523d525ae [dev.regabi] cmd/compile: separate out address taken computation from typechecker
+ 2020-12-29 9ea272e5ec [dev.regabi] cmd/compile: simplify ir.Func somewhat
+ 2020-12-29 e40cb4d4ae [dev.regabi] cmd/compile: remove more unused code
+ 2020-12-29 6f30c95048 [dev.regabi] cmd/compile: remove unneeded indirection
+ 2020-12-29 171fc6f223 [dev.regabi] cmd/compile: remove workarounds for go/constant issues
+ 2020-12-29 33801cdc62 [dev.regabi] cmd/compile: use Ntype where possible
+ 2020-12-29 82ad3083f8 [dev.regabi] cmd/compile: remove typ from AssignOpStmt
+ 2020-12-29 e34c44a7c4 [dev.regabi] cmd/compile: refactoring typecheck arith
+ 2020-12-29 a5ec920160 [dev.regabi] cmd/compile: more Linksym cleanup
+ 2020-12-29 ec59b197d5 [dev.regabi] cmd/compile: rewrite to use linksym helpers [generated]
+ 2020-12-29 25c613c02d [dev.regabi] cmd/compile: add Linksym helpers
+ 2020-12-29 289da2b33e [dev.regabi] cmd/compile: move Node.Opt to Name
+ 2020-12-29 6acbae4fcc [dev.regabi] cmd/compile: address some ir TODOs
+ 2020-12-29 4629f6a51d [dev.regabi] cmd/compile: merge {Selector,CallPart,Method}Expr
+ 2020-12-29 e563715b30 [dev.regabi] cmd/compile: remove Sym.Importdef
+ 2020-12-29 3f370b75fb [dev.regabi] cmd/compile: cleanup //go:generate directives
+ 2020-12-28 4fd9455882 io/fs: fix typo in comment
+ 2020-12-28 07569dac4e [dev.regabi] all: merge master (1d78139) into dev.regabi
+ 2020-12-28 76136be027 [dev.regabi] cmd/compile: check for recursive import in ImportBody
+ 2020-12-28 fda7ec3a3f [dev.regabi] cmd/compile: remove Name.IsDDD, etc
+ 2020-12-28 098a6490b9 [dev.regabi] cmd/compile: remove Declare in makepartialcall
+ 2020-12-28 137f0d2e06 [dev.regabi] cmd/compile: remove unnecessary Name.Sym call
+ 2020-12-28 3383b5c74a [dev.regabi] cmd/compile: flatten dependency graph [generated]
+ 2020-12-28 f8afb8216a [dev.regabi] cmd/compile: rename CommStmt and CaseStmt [generated]
+ 2020-12-28 5f3bd59a0d [dev.regabi] cmd/compile: remove some unneeded code in package ir
+ 2020-12-28 3bdafb0d82 [dev.regabi] cmd/compile: remove CommStmt.List
+ 2020-12-28 2ecf52b841 [dev.regabi] cmd/compile: separate CommStmt from CaseStmt
+ 2020-12-28 ed9772e130 [dev.regabi] cmd/compile: add explicit file name in types generation
+ 2020-12-28 a59d26603f [dev.regabi] cmd/compile: use []*CaseStmt in {Select,Switch}Stmt
+ 2020-12-28 fbc4458c06 [dev.regabi] cmd/compile: simplify some tree traversal code
+ 2020-12-28 6c67677541 [dev.regabi] cmd/compile: simplify FuncName and PkgFuncName
+ 2020-12-28 676d794b81 [dev.regabi] cmd/compile: remove refersToCommonName
+ 2020-12-28 c98548e110 [dev.regabi] cmd/compile: merge ascompatee, ascompatee1, and reorder3
+ 2020-12-28 4c215c4fa9 [dev.regabi] cmd/compile: simplify and optimize reorder3
+ 2020-12-28 e6c973198d [dev.regabi] cmd/compile: stop mangling SelectorExpr.Sel for ODOTMETH
+ 2020-12-28 135ce1c485 [dev.regabi] cmd/compile: desugar OMETHEXPR into ONAME during walk
+ 2020-12-28 0f732f8c91 [dev.regabi] cmd/compile: minor walkExpr cleanups
+ 2020-12-28 0de8eafd98 [dev.regabi] cmd/compile: remove SelectorExpr.Offset field
+ 2020-12-28 a4f335f420 [dev.regabi] cmd/compile: always use a Field for ODOTPTR expressions
+ 2020-12-26 1d78139128 runtime/cgo: fix Android build with NDK 22
+ 2020-12-25 2018b68a65 net/mail: don't use MDT in test
+ 2020-12-25 e4f293d853 [dev.regabi] cmd/compile: fix OCALLMETH desugaring
+ 2020-12-25 1d9a1f67d5 [dev.regabi] cmd/compile: don't emit reflect data for method types
+ 2020-12-25 396b6c2e7c [dev.regabi] cmd/compile: cleanup assignment typechecking
+ 2020-12-25 e24d2f3d05 [dev.regabi] cmd/compile: remove typ from RangeStmt
+ 2020-12-25 2785c691c2 [dev.regabi] cmd/compile: cleanup devirtualization docs
+ 2020-12-25 4b1d0fe66f [dev.regabi] cmd/compile: new devirtualization pkg [generated]
+ 2020-12-24 082cc8b7d9 [dev.regabi] cmd/compile: change ir.IsAssignable -> ir.IsAddressable
+ 2020-12-24 27b248b307 [dev.regabi] cmd/compile: separate range stmt Vars to Key, Value nodes
+ 2020-12-23 40818038bf [dev.regabi] cmd/compile: change CaseStmt.Vars to Var
+ 2020-12-23 b116404444 runtime: shift timeHistogram buckets and allow negative durations
+ 2020-12-23 8db7e2fecd runtime: fix allocs-by-size and frees-by-size buckets
+ 2020-12-23 fb96f07e1a runtime: fix nStackRoots comment about stack roots
+ 2020-12-23 d1502b3c72 lib/time, time/tzdata: update tzdata to 2020e
+ 2020-12-23 30c99cbb7a cmd/go: add the Retract field to 'go help mod edit' definition of the GoMod struct
+ 2020-12-23 49d0b239cb doc: fix a typo in contribute.html
+ 2020-12-23 9eeed291bc [dev.regabi] cmd/compile: eliminate usage of ir.Node in liveness
+ 2020-12-23 d1d64e4cea [dev.regabi] cmd/compile: split SliceExpr.List into separate fields
+ 2020-12-23 98a73030b0 cmd/go: in 'go get', promote named implicit dependencies to explicit
+ 2020-12-23 d19018e8f1 [dev.regabi] cmd/compile: split SliceHeaderExpr.LenCap into separate fields
+ 2020-12-23 53f082b0ee [dev.regabi] cmd/compile: cleanup export code further
+ 2020-12-23 31267f82e1 [dev.regabi] cmd/compile: simplify function/interface/struct typechecking
+ 2020-12-23 addade2cce [dev.regabi] cmd/compile: prefer types constructors over typecheck
+ 2020-12-23 18ebfb49e9 [dev.regabi] cmd/compile: cleanup noder
+ 2020-12-23 87a592b356 [dev.regabi] cmd/compile: cleanup import/export code
+ 2020-12-23 5898025026 [dev.regabi] cmd/compile: update mkbuiltin.go to use new type constructors
+ 2020-12-23 63c96c2ee7 [dev.regabi] cmd/compile: update mkbuiltin.go and re-enable TestBuiltin
+ 2020-12-23 37f138df6b [dev.regabi] cmd/compile: split out package test [generated]
+ 2020-12-23 3d8a3cb06b [dev.regabi] cmd/compile: split out package pkginit [generated]
+ 2020-12-23 3f04d964ab [dev.regabi] cmd/compile: split up walkexpr1, walkstmt [generated]
+ 2020-12-23 e4895ab4c0 [dev.regabi] cmd/compile: split out package walk [generated]
+ 2020-12-23 01fd2d05c8 [dev.regabi] cmd/compile: split out package dwarfgen [generated]
+ 2020-12-23 6c34d2f420 [dev.regabi] cmd/compile: split out package ssagen [generated]
+ 2020-12-23 de65151e50 [dev.regabi] cmd/compile: split out package reflectdata [generated]
+ 2020-12-23 4dfb5d91a8 [dev.regabi] cmd/compile: split out package staticdata [generated]
+ 2020-12-23 fbc82f03b1 [dev.regabi] cmd/compile: split out package noder [generated]
+ 2020-12-23 de454eef5f [dev.regabi] cmd/compile: split out package escape [generated]
+ 2020-12-23 071ab0a14c [dev.regabi] cmd/compile: split out package liveness [generated]
+ 2020-12-23 0ced54062e [dev.regabi] cmd/compile: split out package objw [generated]
+ 2020-12-23 575fd6ff0a [dev.regabi] cmd/compile: split out package inline [generated]
+ 2020-12-23 0256ba99a8 [dev.regabi] cmd/compile: split up typecheck1 [generated]
+ 2020-12-23 b9693d7627 [dev.regabi] cmd/compile: split out package typecheck [generated]
+ 2020-12-23 dac0de3748 [dev.regabi] cmd/compile: move type size calculations into package types [generated]
+ 2020-12-23 527a1895d6 [dev.regabi] cmd/compile: move helpers into package ir [generated]
+ 2020-12-23 65c4c6dfb2 [dev.regabi] cmd/compile: group known symbols, packages, names [generated]
+ 2020-12-23 9ee309255a [dev.regabi] cmd/compile: move helpers into package types [generated]
+ 2020-12-23 ead4957892 [dev.regabi] cmd/compile: move helpers into package base [generated]
+ 2020-12-23 440308ffd7 [dev.regabi] cmd/compile: simplify Nodes usage [generated]
+ 2020-12-23 f9d373720e [dev.regabi] cmd/compile: remove Left, Right etc methods [generated]
+ 2020-12-23 14d667341f [dev.regabi] cmd/compile: remove Node.Left etc [generated]
+ 2020-12-23 6f27d29be0 [dev.regabi] cmd/compile: remove ir.Nod [generated]
+ 2020-12-23 fd6ba1c8a2 os/signal: fix a deadlock with syscall.AllThreadsSyscall() use
+ 2020-12-23 69cf39089f [dev.regabi] cmd/compile: do not die in early base.FlushErrors
+ 2020-12-23 6d03cde88a [dev.regabi] cmd/dist: automatically bootstrap cmd subdirs
+ 2020-12-23 b0b0d98283 runtime: linux iscgo support for not blocking nptl signals
+ 2020-12-23 d1d1099c91 [dev.regabi] cmd/compile: fixes for big rewrite
+ 2020-12-22 223331fc0c cmd/go/internal/modload: add hint for missing implicit dependency
+ 2020-12-22 ec741b0447 [dev.regabi] all: merge master (c9fb4eb) into dev.regabi
+ 2020-12-22 acc32ea124 [dev.regabi] codereview.cfg: add config for dev.regabi
+ 2020-12-22 c9fb4eb0a2 cmd/link: handle grouped resource sections
+ 2020-12-22 c40934b33d [dev.regabi] cmd/compile: adjust one case in walkexpr
+ 2020-12-22 280e7fd1ee [dev.regabi] cmd/compile: only access Func method on concrete types
+ 2020-12-22 51ba53f5c2 [dev.regabi] cmd/compile: separate misc for gc split
+ 2020-12-22 572f168ed2 [dev.regabi] cmd/compile: separate various from Main
+ 2020-12-22 3b12c6dc08 [dev.regabi] cmd/compile: separate typecheck more cleanly
+ 2020-12-22 7c8f5356ab [dev.regabi] cmd/compile: separate dowidth better
+ 2020-12-22 c06a354bcc test: trigger SIGSEGV instead of SIGTRAP in issue11656.go
+ 2020-12-22 0aa9b4709a cmd/pack: r command create output file if not exist
+ 2020-12-22 cb28c96be8 [dev.regabi] cmd/compile,cmd/link: initial support for ABI wrappers
+ 2020-12-22 c8610e4700 [dev.regabi] cmd/compile: add ir.BasicLit to represent literals
+ 2020-12-22 3512cde10a [dev.regabi] cmd/compile: stop reusing Ntype for OSLICELIT length
+ 2020-12-22 2755361e6a [dev.regabi] cmd/compile: change noder.declNames to returns ir.Names
+ 2020-12-22 301af2cb71 [dev.regabi] runtime/race: adjust test pattern match for ABI wrapper
+ 2020-12-22 4d27c4c223 runtime: correct error handling in several FreeBSD syscall wrappers
+ 2020-12-22 9b6147120a cmd/pack: treat compiler's -linkobj output as "compiler object"
+ 2020-12-22 306b2451c8 [dev.regabi] runtime: fix ABI targets in runtime.panic{Index,Slice} shims
+ 2020-12-21 bc7e4d9257 syscall: don't generate ptrace on iOS
+ 2020-12-21 94cfeca0a5 [dev.regabi] cmd/compile: stop using ONONAME with Name
+ 2020-12-21 cb4898a77d [dev.regabi] cmd/compile: simplify declaration importing
+ 2020-12-21 06915ac14d [dev.regabi] cmd/compile: move itabname call out of implements
+ 2020-12-21 6cff874c47 runtime/metrics: add Read examples
+ 2020-12-21 4e8f681eff Merge "[dev.regabi] all: merge master into dev.regabi" into dev.regabi
+ 2020-12-21 1a523c8ab0 [dev.regabi] cmd/compile: separate nowritebarrierrec from main
+ 2020-12-21 e999c17022 [dev.regabi] cmd/compile: separate ssa from other phases
+ 2020-12-21 4836e28ac0 [dev.regabi] cmd/compile: separate noder more cleanly
+ 2020-12-21 85ce6ecfe3 [dev.regabi] cmd/compile: separate exportsym more cleanly
+ 2020-12-21 1a3b036b83 [dev.regabi] cmd/compile: collect global compilation state
+ 2020-12-21 2153a99914 [dev.regabi] cmd/compile: setup to move Addrconst, Patch into cmd/internal/obj
+ 2020-12-21 0bb0baf683 [dev.regabi] cmd/compile: cleanup for concrete types - more
+ 2020-12-21 ca8e17164e [dev.regabi] all: merge master into dev.regabi
+ 2020-12-21 8438a5779b runtime: use _exit on darwin
+ 2020-12-21 cb95819cf6 runtime: detect netbsd netpoll overrun in sysmon
+ 2020-12-21 53c984d976 runtime: skip wakep call in wakeNetPoller on Plan 9
+ 2020-12-21 9abbe27710 test: skip issue11656.go on mips/mips64/ppc64
+ 2020-12-20 89b44b4e2b cmd/compile: recognize reassignments involving receives
+ 2020-12-19 55b58018f4 test: for issue11656 try to execute trap, not call it
+ 2020-12-18 626cc7c02d test: permit "exponent too large" error
+ 2020-12-18 139cd0e12f go/build: make TestDependencies work again
+ 2020-12-18 2de7866470 os: remove dependency on strings package
+ 2020-12-18 c45313bf45 [dev.regabi] cmd/compile: remove prealloc map
+ 2020-12-18 ffb0cb7044 [dev.regabi] cmd/compile: remove uses of Name.Offset, Name.copy
+ 2020-12-18 c76be2a24e [dev.regabi] cmd/compile: add ONAMEOFFSET, delete to-be-deleted fields
+ 2020-12-18 4e8f1e139f [dev.regabi] cmd/compile: cleanup for concrete types - sinit
+ 2020-12-18 27aba22651 [dev.regabi] cmd/compile: cleanup for concrete types - walk
+ 2020-12-18 0b9cb63b8d [dev.regabi] cmd/compile: rename ir.Find to ir.Any and update uses
+ 2020-12-18 ae652a4ac9 os/signal: fix flaky tests for NotifyContext.
+ 2020-12-18 740851baca cmd/link: avoid use of -T when linking with lld
+ 2020-12-18 f1778c28a9 test: recognize and use gc build tag
+ 2020-12-17 8fcf318123 api/go1.16: remove crypto/tls APIs that are moved to Go 1.17
+ 2020-12-17 520f3b72db crypto/tls: revert "add HandshakeContext method to Conn"
+ 2020-12-17 2ff33f5e44 api: promote next to go1.16
+ 2020-12-17 aeedc9f804 [dev.regabi] cmd/compile: remove OSELRECV
+ 2020-12-17 0328c3b660 [dev.regabi] cmd/compile: use OSELRECV2 for all <-c variants
+ 2020-12-17 88e1415d08 [dev.regabi] cmd/compile: add type assertion in regabi test
+ 2020-12-17 9c384e881e [dev.regabi] cmd/compile: cleanup for concrete types - mop-up
+ 2020-12-17 be64c8bece [dev.regabi] cmd/compile: cleanup for concrete types - noder
+ 2020-12-17 5024396563 [dev.regabi] cmd/compile: cleanup for concrete types - subr
+ 2020-12-17 dd67b13d07 [dev.regabi] cmd/compile: cleanup for concrete types - range, select, swt
+ 2020-12-17 42fec2ded4 [dev.regabi] cmd/compile: cleanup for concrete types - const
+ 2020-12-17 389ae3d5ba [dev.regabi] cmd/compile: cleanup for concrete types - inl
+ 2020-12-17 5fe64298a4 [dev.regabi] cmd/compile: cleanup for concrete types - import/export
+ 2020-12-17 aa55d4e54b [dev.regabi] cmd/compile: cleanup for concrete types - escape
+ 2020-12-17 846740c17f [dev.regabi] cmd/compile: cleanup for concrete types - ssa
+ 2020-12-17 bf9bbbd6ed [dev.regabi] cmd/compile: cleanup for concrete types - order
+ 2020-12-17 4ac6a6317b [dev.regabi] cmd/compile: cleanup for concrete types - typecheck
+ 2020-12-17 f6efa3d4a4 [dev.regabi] cmd/compile: simplify ir.Find, replace ir.Inspect with ir.Visit
+ 2020-12-17 f6d2834f8f [dev.regabi] cmd/compile: limit Implicit method to nodes where it is defined
+ 2020-12-17 7fde0d2b50 [dev.regabi] cmd/compile: remove use of Initorder, Offset Node fields for initorder
+ 2020-12-17 114af2a044 [dev.regabi] cmd/compile: change Nodes to be a slice
+ 2020-12-17 4dfc7333f4 [dev.regabi] cmd/compile: update ir/fmt for concrete types
+ 2020-12-17 a997543292 [dev.regabi] cmd/compile: fix potential closure waste in Order
+ 2020-12-17 578fbbe3aa [dev.regabi] cmd/compile: rewrite some generic ir.Nod calls
+ 2020-12-17 5ae70b85c6 [dev.regabi] cmd/compile: cleanup preparing for concrete types, 2
+ 2020-12-17 fa06894b36 [dev.regabi] cmd/compile: cleanup preparing for concrete types
+ 2020-12-17 5a4db102b2 html/template: avoid race when escaping updates template
+ 2020-12-16 b0f01e17f8 go/types: report error for invalid (but empty) expr switch
+ 2020-12-16 5abda2618b cmd/link: handle large relocation addend on darwin/arm64
+ 2020-12-16 a318d56c1e cmd/link: pass arch-specific flags to external linker when testing supported flag
+ 2020-12-16 f4e7a6b905 cmd/internal/goobj: fix buglet in object file reader
+ 2020-12-16 75e16f5127 doc/go1.16: add link to reflect.StructTag
+ 2020-12-16 08b5091d03 net: close connection in localServer teardown
+ 2020-12-16 8981092d71 cmd/link: ignore SEH marking on PE objects
+ 2020-12-15 731bb54038 test: update for gofrontend error message changes
+ 2020-12-15 129bb1917b doc/go1.15: mention 1.15.3 cgo restriction on empty structs
+ 2020-12-15 685a322fe4 test: match gofrontend error messages
+ 2020-12-15 3d6467824c test: only require issue11674 errors with gc compiler
+ 2020-12-15 7cdc84a15b test: remove bug429 (duplicates runtime.TestSimpleDeadlock)
+ 2020-12-15 412dc2f4d3 test: adjust issue11371 to fit in required precision
+ 2020-12-15 8e2d74b705 test: only check for issue11362 error with gc
+ 2020-12-15 f8ac237032 test: import file name for issue19028
+ 2020-12-15 a508840c67 doc/go1.16: fix path, path/filepath release notes
+ 2020-12-15 5046cb8a6e doc/go1.16: fix formatting in net, net/http and net/http/httputil sections
+ 2020-12-15 3298300ddf text/template: error on range over send channel
+ 2020-12-15 4c2d66f642 [dev.regabi] cmd/compile: use ir.Ident for imported identifiers
+ 2020-12-15 305d93ef84 [dev.regabi] cmd/compile: type check externdcl earlier
+ 2020-12-15 9f16620f46 [dev.regabi] cmd/compile: fix latent Sym.SetPkgDef issue
+ 2020-12-15 5a25a3fd1d test: recognize gofrontend error messages
+ 2020-12-14 fea898a4b0 [dev.regabi] cmd/compile: intercept the making of OADDR nodes
+ 2020-12-14 663cd862ed cmd/link: do not mark resource section as writable
+ 2020-12-14 48dfa2b2dc cmd/link: deal with ADDR32NB relocations the same way as ADDR32 on arm
+ 2020-12-14 033390d9ad cmd/link: recognize arm header of PE objects
+ 2020-12-14 48906a6d57 net/http/pprof: don't treat os.Args as format string in Cmdline handler
+ 2020-12-14 6e3cc5c56f go/types: report invalid ... in conversions
+ 2020-12-14 278b9a8a4a io/fs: fix package reference in FS godoc
+ 2020-12-14 617383377f [dev.regabi] cmd/compile: reorg generated array hash loop
+ 2020-12-14 d06794da4a doc/go1.16: add missing <code> tag
+ 2020-12-14 dea6d94a44 math/big: add test for recursive division panic
+ 2020-12-14 2f5b1a3974 test: make a race detector test robust to timing variations
+ 2020-12-14 c81343ce3a net/http: attempt deadlock fix in TestDisableKeepAliveUpgrade
+ 2020-12-14 828746ec57 debug/dwarf: don't try to parse addr/rnglists header
+ 2020-12-14 be10af7c4e test: match gofrontend error messages
+ 2020-12-14 89f38323fa [dev.regabi] cmd/compile: add register ABI analysis utilities
+ 2020-12-14 ce61ccca8f test: match gofrontend error messages
+ 2020-12-14 a58be734ea cmd/compile: fix incorrect shift count type with s390x rules
+ 2020-12-14 8ce37e4110 [dev.regabi] cmd/compile: fix noopt builder
+ 2020-12-14 7e17b46c58 [dev.regabi] cmd/compile/internal/types: add IsScalar query method
+ 2020-12-14 2b76429eb0 [dev.regabi] cmd/compile: refactor type initialization code into helper
+ 2020-12-14 9c5241e520 [dev.regabi] cmd/compile: remove unnecessary String methods
+ 2020-12-14 267975dc47 Merge branch 'master' into dev.regabi
+ 2020-12-14 64d8846aae cmd/go: print hint when 'go install' run without version outside module
+ 2020-12-14 451b6b38fd cmd/go: refactor error reporting in internal/load
+ 2020-12-09 63bc23b545 [dev.regabi] cmd/compile: first start towards using Ident
+ 2020-12-09 eae8fd519b [dev.regabi] cmd/compile: iexport debug crumbs for toolstash
+ 2020-12-09 837b35cc55 [dev.regabi] cmd/compile: adjust IR representations
+ 2020-12-09 0c49440664 [dev.regabi] cmd/compile: arrange for walkstmt, walkexpr, to return from switch cases
+ 2020-12-09 4090af83c5 [dev.regabi] cmd/compile: use reflection in ir.Dump
+ 2020-12-09 e2d278bfeb [dev.regabi] cmd/compile: two small fixes
+ 2020-12-08 dbf2fc8cff [dev.regabi] cmd/compile: replace many uses of ir.Node with *ir.Name
+ 2020-12-08 bb31c75343 [dev.regabi] cmd/compile: ir.Node is no longer an ssa.Aux
+ 2020-12-08 6db970e20a [dev.regabi] cmd/compile: rewrite Aux uses of ir.Node to *ir.Name [generated]
+ 2020-12-08 1c8943a6ad [dev.regabi] cmd/compile: introduce FwdRefAux for wrapping ir.Node as ssa.Aux
+ 2020-12-08 dcec658f6c [dev.regabi] cmd/compile: change LocalSlot.N to *ir.Name
+ 2020-12-08 1a98ab0e2d [dev.regabi] cmd/compile: add ssa.Aux tag interface for Value.Aux
+ 2020-12-07 63722da46b [dev.regabi] cmd/compile: fix comment
+ 2020-12-07 6d783e7440 [dev.regabi] cmd/compile: export all Node fields [generated]
+ 2020-12-07 2de0af3b1b [dev.regabi] cmd/compile: prepare mknode for rename of Func.body
+ 2020-12-07 724374f859 [dev.regabi] cmd/compile: rewrite stale format strings
+ 2020-12-07 61889ba680 [dev.regabi] cmd/compile: simplify fmtmap
+ 2020-12-07 6ea2b8c54c [dev.regabi] cmd/compile: clean up and document formatting
+ 2020-12-07 bb4a37bd93 [dev.regabi] cmd/compile: move Type, Sym printing to package types [generated]
+ 2020-12-07 70155cca81 [dev.regabi] cmd/compile: untangle FmtFlag, FmtMode
+ 2020-12-07 3904a62829 [dev.regabi] cmd/compile: remove mode.Sprintf etc in printer
+ 2020-12-07 fb17dfa43d [dev.regabi] cmd/compile: narrow interface between ir and types
+ 2020-12-07 3b25f3c150 [dev.regabi] cmd/compile: simplify Op, Node, Nodes printing
+ 2020-12-07 8ce2605c5b [dev.regabi] cmd/compile: untangle ir.Dump printing
+ 2020-12-07 158c9dd131 [dev.regabi] cmd/compile: reorganize ir/fmt.go
+ 2020-12-07 a79742f39a [dev.regabi] cmd/compile: remove "short" node header mode
+ 2020-12-07 ef5964dd6b [dev.regabi] cmd/compile: arrange for typecheck1 to end in switch
+ 2020-12-07 dcc640e839 [dev.regabi] test: add exhaustive test of evaluated but not used
+ 2020-12-07 2cec6c4a8c [dev.regabi] cmd/compile: generate Node methods using program
+ 2020-12-07 d90b199e9c [dev.regabi] cmd/compile: silence errors about missing blank methods
+ 2020-12-06 e885df2731 [dev.regabi] cmd/compile: change iexport to avoid map[ir.Node]
+ 2020-12-06 2d4c95565a [dev.regabi] cmd/compile: change nowritebarrierrec to use map[*ir.Func]
+ 2020-12-06 1b5eed8982 [dev.regabi] cmd/compile: replace NodeQueue with NameQueue
+ 2020-12-06 6c5967e528 [dev.regabi] cmd/compile: change NodeSet to NameSet
+ 2020-12-04 46b6e70e3b [dev.regabi] cmd/compile: replace ir.Node with *ir.Name in Order
+ 2020-12-04 b75f51c645 [dev.regabi] cmd/compile: replace ir.Node with *ir.Name in Liveness
+ 2020-12-04 133b03e1c3 [dev.regabi] cmd/compile: rewrite code to use DeclaredBy
+ 2020-12-04 d9cb84c84b [dev.regabi] cmd/compile: add SameSource, Uses, and DeclaredBy helpers
+ 2020-12-04 5dbd2e8e44 [dev.regabi] cmd/compile: remove DeepCopyNode interface
+ 2020-12-04 9ab3d854ad [dev.regabi] cmd/compile: avoid general traversal in deadcode
+ 2020-12-04 bb5aa2b664 [dev.regabi] cmd/compile: implement editChildren for nodes
+ 2020-12-04 4725c3ffd1 [dev.regabi] cmd/compile: implement doChildren for nodes
+ 2020-12-04 18f2df7e81 [dev.regabi] cmd/compile: implement copy for nodes
+ 2020-12-04 d855b30fe4 [dev.regabi] cmd/compile: use ir.EditChildren for inline rewriting
+ 2020-12-04 b9df26d7a8 [dev.regabi] cmd/compile: use ir.Find for "search" traversals
+ 2020-12-04 0d1b44c645 [dev.regabi] cmd/compile: introduce IR visitors
+ 2020-12-04 7fcf5b994c [dev.regabi] cmd/compile: replace inlcopy with ir.DeepCopy
+ 2020-12-04 989a3f5041 [dev.regabi] cmd/compile: adjustments to Copy and DeepCopy
+ 2020-12-04 99ecfcae31 [dev.regabi] cmd/compile: swap inlining order of if then vs else blocks
+ 2020-12-04 84cb51d7d7 [dev.regabi] cmd/compile: eliminate more SetOrig
+ 2020-12-03 351bc2f38c [dev.regabi] cmd/compile: store types.Field on {Selector,CallPart}Expr
+ 2020-12-03 a2058bac21 [dev.regabi] cmd/compile: add ConstExpr
+ 2020-12-03 beb5e05404 [dev.regabi] cmd/compile: refactoring prep for ConstExpr
+ 2020-12-03 7e81135be7 [dev.regabi] cmd/compile: rename addinit(n, init) to initExpr(init, n)
+ 2020-12-03 6e30fc10fc [dev.regabi] all: merge master (d0c0dc682c1f) into dev.regabi
+ 2020-12-03 59b8916d48 [dev.regabi] cmd/compile: handle OCONVNOP better in ssa
+ 2020-12-03 00e5727790 [dev.regabi] cmd/compile: remove okAs
+ 2020-12-03 5a3b6796cd [dev.regabi] cmd/compile: remove extra typ field in Name struct
+ 2020-12-02 64bc656aed [dev.regabi] cmd/compile: use explicit block statements for init
+ 2020-12-02 ecc8d15bc5 [dev.regabi] cmd/compile: delete OEMPTY
+ 2020-12-02 ec5f349b22 [dev.regabi] cmd/compile: merge OBLOCK and OEMPTY
+ 2020-12-02 c769d393de [dev.regabi] cmd/compile: add ir.NewDeclNameAt
+ 2020-12-02 c10b0ad628 [dev.regabi] cmd/compile: add Pkg parameter to type constructors
+ 2020-12-02 42e46f4ae0 [dev.regabi] cmd/compile: comment out //go:linkname warning
+ 2020-12-02 77a71e0057 [dev.regabi] cmd/compile: add Interface, Signature, and Struct constructors
+ 2020-12-02 15085f8974 [dev.regabi] cmd/compile: tweak hash bucket type descriptor
+ 2020-12-01 1408d26ccc [dev.regabi] cmd/compile: cleanup some leftover cruft
+ 2020-12-01 5ffa275f3c [dev.regabi] cmd/compile: first pass at abstracting Type
+ 2020-12-01 6ca23a45fe [dev.regabi] cmd/compile: only save ONAMEs on Curfn.Dcl
+ 2020-12-01 a17c5e2fce [dev.regabi] cmd/compile: add NewBasic and cleanup universe
+ 2020-12-01 f37aa5e4e2 [dev.regabi] cmd/compile: add NewNamed
+ 2020-12-01 63a6f08b39 [dev.regabi] cmd/compile: move setUnderlying to package types
+ 2020-12-01 f2311462ab [dev.regabi] cmd/compile: cleanup type-checking of defined types
+ 2020-12-01 2d6ff998ed [dev.regabi] cmd/compile: process //go:linknames after declarations
+ 2020-12-01 ecff7628ea [dev.regabi] cmd/compile: unexport Node.RawCopy
+ 2020-12-01 4da41fb3f8 [dev.regabi] cmd/compile: use ir.Copy instead of direct use of RawCopy
+ 2020-12-01 dadfc80bc1 [dev.regabi] cmd/compile: improve findTypeLoop
+ 2020-12-01 45f3b646d4 [dev.regabi] cmd/compile: add OSTMTEXPR Op
+ 2020-12-01 9a5a11adfa [dev.regabi] cmd/compile: add custom expression Node implementations
+ 2020-12-01 0f9f27287b [dev.regabi] cmd/compile: remove types.InitSyms
+ 2020-11-30 41ad4dec99 [dev.regabi] cmd/compile: fix -h
+ 2020-11-30 ffa68716a0 [dev.regabi] cmd/compile: add custom statement Node implementations
+ 2020-11-30 2bc814cd18 [dev.regabi] cmd/compile: clean up ONEW node
+ 2020-11-30 b7f67b75d2 [dev.regabi] cmd/compile: clean up in preparation for expression Nodes
+ 2020-11-30 5fc192af56 [dev.regabi] cmd/compile: clean up Order.copyExpr TODO
+ 2020-11-30 7c9b6b1ca2 [dev.regabi] cmd/compile: clean up in preparation for statement Nodes
+ 2020-11-30 c6de5d8d1f [dev.regabi] cmd/compile: simplify export data representation of nil
+ 2020-11-30 ae1a337809 [dev.regabi] cmd/compile: remove ODCLFIELD and ODDD ops
+ 2020-11-30 4e7685ef1a [dev.regabi] cmd/compile: add custom type syntax Node implementations
+ 2020-11-30 d40869fced [dev.regabi] cmd/compile: move gc.treecopy to ir.DeepCopy
+ 2020-11-30 f0001e8867 [dev.regabi] cmd/compile: add OTSLICE Op
+ 2020-11-30 1b84aabb01 [dev.regabi] cmd/compile: move typenod, typenodl to ir.TypeNode, ir.TypeNodeAt [generated]
+ 2020-11-30 e5c6463e20 [dev.regabi] cmd/compile: add ir.CallPartExpr
+ 2020-11-30 4eaef981b5 [dev.regabi] cmd/compile: add ir.Closure, ir.ClosureRead
+ 2020-11-30 e84b27bec5 [dev.regabi] cmd/compile: clean up Name and Func uses
+ 2020-11-30 c4bd0b7474 [dev.regabi] cmd/compile: make ir.Func the ODCLFUNC Node implementation
+ 2020-11-30 65ae15ac5d [dev.regabi] cmd/compile: move func code from node.go to func.go
+ 2020-11-30 862f638a89 [dev.regabi] cmd/compile: make ir.Name the ONAME Node implementation
+ 2020-11-30 f6106d195d [dev.regabi] cmd/compile: add ir.PkgName
+ 2020-11-30 420809ab08 [dev.regabi] cmd/compile: move name code from node.go to name.go
+ 2020-11-30 be3d8b40b5 [dev.regabi] cmd/compile: ir.BranchStmt, add ir.EmptyStmt, ir.LabelStmt
+ 2020-11-30 b09dbc6913 [dev.regabi] cmd/compile: remove SetOp(OEMPTY) calls
+ 2020-11-30 171787efcd [dev.regabi] cmd/compile: remove Orig, SetOrig from Node interface
+ 2020-11-30 79a3d5ce15 [dev.regabi] cmd/compile: setup for new Node implementations
+ 2020-11-30 0c65a2f317 [dev.regabi] cmd/compile: drop Node.HasOpt method
+ 2020-11-30 65f4ec2fae [dev.regabi] cmd/compile: cleanup label handling
+ 2020-11-25 88e33f6ecb [dev.regabi] cmd/compile: fix latent import/export issue with break/continue
+ 2020-11-25 40f5bc4d55 [dev.regabi] merge master 4481ad6eb6 into dev.regabi
+ 2020-11-25 41f3af9d04 [dev.regabi] cmd/compile: replace *Node type with an interface Node [generated]
+ 2020-11-25 4d0d9c2c5c [dev.regabi] cmd/compile: introduce ir.INode interface for *ir.Node
+ 2020-11-25 c26aead50c [dev.regabi] cmd/compile: convert types.Node (a pointer) to types.IRNode (an interface)
+ 2020-11-25 acb4d1cef1 [dev.regabi] cmd/compile: use Node getters and setters [generated]
+ 2020-11-25 41ab6689ed [dev.regabi] cmd/compile: rewrite a few ++/--/+=/-= to prep for getters/setters [generated]
+ 2020-11-25 048debb224 [dev.regabi] cmd/compile: remove gc ↔ ssa cycle hacks
+ 2020-11-25 84e2bd611f [dev.regabi] cmd/compile: introduce cmd/compile/internal/ir [generated]
+ 2020-11-25 331b8b4797 [dev.regabi] cmd/compile: move okforconst into its own declaration
+ 2020-11-25 26b66fd60b [dev.regabi] cmd/compile: introduce cmd/compile/internal/base [generated]
+ 2020-11-25 eb3086e5a8 [dev.regabi] cmd/compile: finish cleanup of Debug parsing
+ 2020-11-25 3c240f5d17 [dev.regabi] cmd/compile: clean up debug flag (-d) handling [generated]
+ 2020-11-25 756661c82a [dev.regabi] cmd/compile: finish cleanup of Flag initialization
+ 2020-11-25 259fd8adbb [dev.regabi] cmd/compile: fix reporting of overflow
+ 2020-11-25 18573aea3c [dev.regabi] cmd/compile: clean up flag handling [generated]
+ 2020-11-25 6e583d65ab [dev.regabi] cmd/compile: simplify fmt handling of Nodes
+ 2020-11-25 d166ef6876 [dev.regabi] cmd/compile: add Node field getters and setters
+ 2020-11-25 9262909764 [dev.regabi] cmd/compile: rewrite problematic use of Node fields
+ 2020-11-25 9e0e43d84d [dev.regabi] cmd/compile: remove uses of dummy
+ 2020-11-25 4a6b4fd139 [dev.regabi] add FatalfAt and fix Fatalf docs
+ 2020-11-25 484449c641 [dev.regabi] cmd/compile: remove file mistakenly added by CL 272248
+ 2020-11-25 7d72951229 [dev.regabi] cmd/compile: replace Val with go/constant.Value
+ 2020-11-24 6826287c6b [dev.regabi] cmd/compile: replace evconst with non-mutating version
+ 2020-11-24 c22bc745c3 [dev.regabi] cmd/compile: delete n.List after collapsing OADDSTR to OLITERAL
+ 2020-11-24 ee6132a698 [dev.regabi] cmd/compile: introduce OMETHEXPR instead of overloading ONAME
+ 2020-11-24 4f9d54e41d [dev.regabi] cmd/compile: add OMETHEXPR
+ 2020-11-24 fd11a32c92 [dev.regabi] cmd/compile: clean up Node.Func
+ 2020-11-24 8e2106327c [dev.regabi] cmd/compile: clean up tests to know less about Node
+ 2020-11-24 742c05e3bc [dev.regabi] cmd/compile: prep refactoring for switching to go/constant
+ 2020-11-24 015423a15b [dev.regabi] strconv: add to bootstrap packages
+ 2020-11-24 c767d73227 [dev.regabi] cmd/compile: remove CTRUNE
+ 2020-11-24 6dae48fb0b [dev.regabi] cmd/compile: refactor type/value assertions
+ 2020-11-24 88a9e2f9ad [dev.regabi] cmd/compile: replace CTNIL with ONIL
+ 2020-11-24 4af2decf30 [dev.regabi] cmd/compile: add (unused) ONIL constant
+ 2020-11-24 668e3a598f [dev.regabi] cmd/compile: cleanup type switch typechecking
+ 2020-11-24 96f3fb7244 [dev.regabi] go/constant: avoid heap allocations in match
+ 2020-11-24 1abb12fc97 [dev.regabi] go/constant: optimize BitLen
+ 2020-11-24 228b732ad9 [dev.regabi] cmd/compile: prepare for package ir
+ 2020-11-24 e37597f7f0 [dev.regabi] cmd/compile: rename a few 'base' identifiers
+ 2020-11-24 357c576878 [dev.regabi] cmd/compile: clean up error API
+ 2020-11-24 5fd949e4bd [dev.regabi] cmd/compile: initialize importMap lazily
+ 2020-11-24 7b144ed4f7 [dev.regabi] cmd/compile: rewrite concurrentFlagOk to be clearer
+ 2020-11-24 c754f25241 [dev.regabi] cmd/compile/internal/types: remove Func.Nname
+ 2020-11-24 c50c7a8c06 [dev.regabi] cmd/compile/internal/gc: refactor to use stop using Func.Nname
+ 2020-11-24 d5928847de [dev.regabi] cmd/compile/internal/gc: prep for Func.Nname removal refactoring
+ 2020-11-24 b30c7a8044 [dev.regabi] cmd/compile/internal/gc: add MethodName for getting referenced method
+ 2020-11-24 e1047302bd [dev.regabi] cmd/compile/internal/types: add pos/sym/typ params to NewField

Change-Id: I9c6085171cb95684cc2c71879b915fa650c31dab

34 files changed, 942 insertions, 420 deletions

diff --git a/src/cmd/internal/archive/archive.go b/src/cmd/internal/archive/archive.go
index c1661d7711..e9b25fe240 100644
--- a/src/cmd/internal/archive/archive.go
+++ b/src/cmd/internal/archive/archive.go
@@ -118,9 +118,9 @@ type objReader struct {
 
 func (r *objReader) init(f *os.File) {
 	r.a = &Archive{f, nil}
-	r.offset, _ = f.Seek(0, io.SeekCurrent)
-	r.limit, _ = f.Seek(0, io.SeekEnd)
-	f.Seek(r.offset, io.SeekStart)
+	r.offset, _ = f.Seek(0, os.SEEK_CUR)
+	r.limit, _ = f.Seek(0, os.SEEK_END)
+	f.Seek(r.offset, os.SEEK_SET)
 	r.b = bio.NewReader(f)
 }
 
@@ -221,7 +221,7 @@ func (r *objReader) skip(n int64) {
 		r.readFull(r.tmp[:n])
 	} else {
 		// Seek, giving up buffered data.
-		r.b.MustSeek(r.offset+n, io.SeekStart)
+		r.b.MustSeek(r.offset+n, os.SEEK_SET)
 		r.offset += n
 	}
 }
@@ -426,7 +426,7 @@ func (r *objReader) parseObject(o *GoObj, size int64) error {
 
 // AddEntry adds an entry to the end of a, with the content from r.
 func (a *Archive) AddEntry(typ EntryType, name string, mtime int64, uid, gid int, mode os.FileMode, size int64, r io.Reader) {
-	off, err := a.f.Seek(0, io.SeekEnd)
+	off, err := a.f.Seek(0, os.SEEK_END)
 	if err != nil {
 		log.Fatal(err)
 	}
@@ -464,3 +464,24 @@ func exactly16Bytes(s string) string {
 	s += sixteenSpaces[:16-len(s)]
 	return s
 }
+
+// architecture-independent object file output
+const HeaderSize = 60
+
+func ReadHeader(b *bufio.Reader, name string) int {
+	var buf [HeaderSize]byte
+	if _, err := io.ReadFull(b, buf[:]); err != nil {
+		return -1
+	}
+	aname := strings.Trim(string(buf[0:16]), " ")
+	if !strings.HasPrefix(aname, name) {
+		return -1
+	}
+	asize := strings.Trim(string(buf[48:58]), " ")
+	i, _ := strconv.Atoi(asize)
+	return i
+}
+
+func FormatHeader(arhdr []byte, name string, size int64) {
+	copy(arhdr[:], fmt.Sprintf("%-16s%-12d%-6d%-6d%-8o%-10d`\n", name, 0, 0, 0, 0644, size))
+}
diff --git a/src/cmd/internal/browser/browser.go b/src/cmd/internal/browser/browser.go
index 6867c85d23..577d31789f 100644
--- a/src/cmd/internal/browser/browser.go
+++ b/src/cmd/internal/browser/browser.go
@@ -6,8 +6,8 @@
 package browser
 
 import (
+	exec "internal/execabs"
 	"os"
-	"os/exec"
 	"runtime"
 	"time"
 )
diff --git a/src/cmd/internal/diff/diff.go b/src/cmd/internal/diff/diff.go
index e9d2c23780..0ec2d7f8f9 100644
--- a/src/cmd/internal/diff/diff.go
+++ b/src/cmd/internal/diff/diff.go
@@ -7,9 +7,10 @@
 package diff
 
 import (
+	"bytes"
+	exec "internal/execabs"
 	"io/ioutil"
 	"os"
-	"os/exec"
 	"runtime"
 )
 
@@ -38,6 +39,25 @@ func Diff(prefix string, b1, b2 []byte) ([]byte, error) {
 		// Ignore that failure as long as we get output.
 		err = nil
 	}
+
+	// If we are on Windows and the diff is Cygwin diff,
+	// machines can get into a state where every Cygwin
+	// command works fine but prints a useless message like:
+	//
+	//	Cygwin WARNING:
+	//	  Couldn't compute FAST_CWD pointer.  This typically occurs if you're using
+	//	  an older Cygwin version on a newer Windows.  Please update to the latest
+	//	  available Cygwin version from https://cygwin.com/.  If the problem persists,
+	//	  please see https://cygwin.com/problems.html
+	//
+	// Skip over that message and just return the actual diff.
+	if len(data) > 0 && !bytes.HasPrefix(data, []byte("--- ")) {
+		i := bytes.Index(data, []byte("\n--- "))
+		if i >= 0 && i < 80*10 && bytes.Contains(data[:i], []byte("://cygwin.com/")) {
+			data = data[i+1:]
+		}
+	}
+
 	return data, err
 }
 
diff --git a/src/cmd/internal/dwarf/dwarf.go b/src/cmd/internal/dwarf/dwarf.go
index e1a70ef853..8de4096f06 100644
--- a/src/cmd/internal/dwarf/dwarf.go
+++ b/src/cmd/internal/dwarf/dwarf.go
@@ -12,7 +12,7 @@ import (
 	"cmd/internal/objabi"
 	"errors"
 	"fmt"
-	"os/exec"
+	exec "internal/execabs"
 	"sort"
 	"strconv"
 	"strings"
diff --git a/src/cmd/internal/goobj/funcinfo.go b/src/cmd/internal/goobj/funcinfo.go
index 2cca8f6c4e..6d33a10a51 100644
--- a/src/cmd/internal/goobj/funcinfo.go
+++ b/src/cmd/internal/goobj/funcinfo.go
@@ -19,9 +19,10 @@ type CUFileIndex uint32
 //
 // TODO: make each pcdata a separate symbol?
 type FuncInfo struct {
-	Args   uint32
-	Locals uint32
-	FuncID objabi.FuncID
+	Args     uint32
+	Locals   uint32
+	FuncID   objabi.FuncID
+	FuncFlag objabi.FuncFlag
 
 	Pcsp        SymRef
 	Pcfile      SymRef
@@ -35,6 +36,9 @@ type FuncInfo struct {
 }
 
 func (a *FuncInfo) Write(w *bytes.Buffer) {
+	writeUint8 := func(x uint8) {
+		w.WriteByte(x)
+	}
 	var b [4]byte
 	writeUint32 := func(x uint32) {
 		binary.LittleEndian.PutUint32(b[:], x)
@@ -47,8 +51,10 @@ func (a *FuncInfo) Write(w *bytes.Buffer) {
 
 	writeUint32(a.Args)
 	writeUint32(a.Locals)
-	writeUint32(uint32(a.FuncID))
-
+	writeUint8(uint8(a.FuncID))
+	writeUint8(uint8(a.FuncFlag))
+	writeUint8(0) // pad to uint32 boundary
+	writeUint8(0)
 	writeSymRef(a.Pcsp)
 	writeSymRef(a.Pcfile)
 	writeSymRef(a.Pcline)
@@ -72,46 +78,6 @@ func (a *FuncInfo) Write(w *bytes.Buffer) {
 	}
 }
 
-func (a *FuncInfo) Read(b []byte) {
-	readUint32 := func() uint32 {
-		x := binary.LittleEndian.Uint32(b)
-		b = b[4:]
-		return x
-	}
-	readSymIdx := func() SymRef {
-		return SymRef{readUint32(), readUint32()}
-	}
-
-	a.Args = readUint32()
-	a.Locals = readUint32()
-	a.FuncID = objabi.FuncID(readUint32())
-
-	a.Pcsp = readSymIdx()
-	a.Pcfile = readSymIdx()
-	a.Pcline = readSymIdx()
-	a.Pcinline = readSymIdx()
-	a.Pcdata = make([]SymRef, readUint32())
-	for i := range a.Pcdata {
-		a.Pcdata[i] = readSymIdx()
-	}
-
-	funcdataofflen := readUint32()
-	a.Funcdataoff = make([]uint32, funcdataofflen)
-	for i := range a.Funcdataoff {
-		a.Funcdataoff[i] = readUint32()
-	}
-	filelen := readUint32()
-	a.File = make([]CUFileIndex, filelen)
-	for i := range a.File {
-		a.File[i] = CUFileIndex(readUint32())
-	}
-	inltreelen := readUint32()
-	a.InlTree = make([]InlTreeNode, inltreelen)
-	for i := range a.InlTree {
-		b = a.InlTree[i].Read(b)
-	}
-}
-
 // FuncInfoLengths is a cache containing a roadmap of offsets and
 // lengths for things within a serialized FuncInfo. Each length field
 // stores the number of items (e.g. files, inltree nodes, etc), and the
@@ -159,7 +125,9 @@ func (*FuncInfo) ReadArgs(b []byte) uint32 { return binary.LittleEndian.Uint32(b
 
 func (*FuncInfo) ReadLocals(b []byte) uint32 { return binary.LittleEndian.Uint32(b[4:]) }
 
-func (*FuncInfo) ReadFuncID(b []byte) uint32 { return binary.LittleEndian.Uint32(b[8:]) }
+func (*FuncInfo) ReadFuncID(b []byte) objabi.FuncID { return objabi.FuncID(b[8]) }
+
+func (*FuncInfo) ReadFuncFlag(b []byte) objabi.FuncFlag { return objabi.FuncFlag(b[9]) }
 
 func (*FuncInfo) ReadPcsp(b []byte) SymRef {
 	return SymRef{binary.LittleEndian.Uint32(b[12:]), binary.LittleEndian.Uint32(b[16:])}
diff --git a/src/cmd/internal/goobj/mkbuiltin.go b/src/cmd/internal/goobj/mkbuiltin.go
index 07c3406681..22608e7e69 100644
--- a/src/cmd/internal/goobj/mkbuiltin.go
+++ b/src/cmd/internal/goobj/mkbuiltin.go
@@ -118,8 +118,8 @@ func mkbuiltin(w io.Writer) {
 
 // addBasicTypes returns the symbol names for basic types that are
 // defined in the runtime and referenced in other packages.
-// Needs to be kept in sync with reflect.go:dumpbasictypes() and
-// reflect.go:dtypesym() in the compiler.
+// Needs to be kept in sync with reflect.go:WriteBasicTypes() and
+// reflect.go:writeType() in the compiler.
 func enumerateBasicTypes() []extra {
 	names := [...]string{
 		"int8", "uint8", "int16", "uint16",
diff --git a/src/cmd/internal/goobj/objfile.go b/src/cmd/internal/goobj/objfile.go
index 6e76bea111..d1b838f676 100644
--- a/src/cmd/internal/goobj/objfile.go
+++ b/src/cmd/internal/goobj/objfile.go
@@ -298,7 +298,6 @@ const (
 	SymFlagNoSplit
 	SymFlagReflectMethod
 	SymFlagGoType
-	SymFlagTopFrame
 )
 
 // Sym.Flag2
@@ -332,7 +331,6 @@ func (s *Sym) Leaf() bool          { return s.Flag()&SymFlagLeaf != 0 }
 func (s *Sym) NoSplit() bool       { return s.Flag()&SymFlagNoSplit != 0 }
 func (s *Sym) ReflectMethod() bool { return s.Flag()&SymFlagReflectMethod != 0 }
 func (s *Sym) IsGoType() bool      { return s.Flag()&SymFlagGoType != 0 }
-func (s *Sym) TopFrame() bool      { return s.Flag()&SymFlagTopFrame != 0 }
 func (s *Sym) UsedInIface() bool   { return s.Flag2()&SymFlagUsedInIface != 0 }
 func (s *Sym) IsItab() bool        { return s.Flag2()&SymFlagItab != 0 }
 
@@ -483,6 +481,11 @@ func (r *RefFlags) SetFlag2(x uint8) { r[9] = x }
 
 func (r *RefFlags) Write(w *Writer) { w.Bytes(r[:]) }
 
+// Used to construct an artifically large array type when reading an
+// item from the object file relocs section or aux sym section (needs
+// to work on 32-bit as well as 64-bit). See issue 41621.
+const huge = (1<<31 - 1) / RelocSize
+
 // Referenced symbol name.
 //
 // Serialized format:
@@ -792,7 +795,7 @@ func (r *Reader) Reloc(i uint32, j int) *Reloc {
 func (r *Reader) Relocs(i uint32) []Reloc {
 	off := r.RelocOff(i, 0)
 	n := r.NReloc(i)
-	return (*[1 << 20]Reloc)(unsafe.Pointer(&r.b[off]))[:n:n]
+	return (*[huge]Reloc)(unsafe.Pointer(&r.b[off]))[:n:n]
 }
 
 // NAux returns the number of aux symbols of the i-th symbol.
@@ -818,7 +821,7 @@ func (r *Reader) Aux(i uint32, j int) *Aux {
 func (r *Reader) Auxs(i uint32) []Aux {
 	off := r.AuxOff(i, 0)
 	n := r.NAux(i)
-	return (*[1 << 20]Aux)(unsafe.Pointer(&r.b[off]))[:n:n]
+	return (*[huge]Aux)(unsafe.Pointer(&r.b[off]))[:n:n]
 }
 
 // DataOff returns the offset of the i-th symbol's data.
diff --git a/src/cmd/internal/moddeps/moddeps_test.go b/src/cmd/internal/moddeps/moddeps_test.go
index 9ea21873c5..cba401c896 100644
--- a/src/cmd/internal/moddeps/moddeps_test.go
+++ b/src/cmd/internal/moddeps/moddeps_test.go
@@ -8,6 +8,7 @@ import (
 	"encoding/json"
 	"fmt"
 	"internal/testenv"
+	"io"
 	"io/fs"
 	"io/ioutil"
 	"os"
@@ -21,93 +22,34 @@ import (
 	"golang.org/x/mod/module"
 )
 
-type gorootModule struct {
-	Path      string
-	Dir       string
-	hasVendor bool
-}
-
-// findGorootModules returns the list of modules found in the GOROOT source tree.
-func findGorootModules(t *testing.T) []gorootModule {
-	t.Helper()
-	goBin := testenv.GoToolPath(t)
-
-	goroot.once.Do(func() {
-		goroot.err = filepath.WalkDir(runtime.GOROOT(), func(path string, info fs.DirEntry, err error) error {
-			if err != nil {
-				return err
-			}
-			if info.IsDir() && (info.Name() == "vendor" || info.Name() == "testdata") {
-				return filepath.SkipDir
-			}
-			if path == filepath.Join(runtime.GOROOT(), "pkg") {
-				// GOROOT/pkg contains generated artifacts, not source code.
-				//
-				// In https://golang.org/issue/37929 it was observed to somehow contain
-				// a module cache, so it is important to skip. (That helps with the
-				// running time of this test anyway.)
-				return filepath.SkipDir
-			}
-			if info.IsDir() || info.Name() != "go.mod" {
-				return nil
-			}
-			dir := filepath.Dir(path)
-
-			// Use 'go list' to describe the module contained in this directory (but
-			// not its dependencies).
-			cmd := exec.Command(goBin, "list", "-json", "-m")
-			cmd.Env = append(os.Environ(), "GO111MODULE=on")
-			cmd.Dir = dir
-			cmd.Stderr = new(strings.Builder)
-			out, err := cmd.Output()
-			if err != nil {
-				return fmt.Errorf("'go list -json -m' in %s: %w\n%s", dir, err, cmd.Stderr)
-			}
-
-			var m gorootModule
-			if err := json.Unmarshal(out, &m); err != nil {
-				return fmt.Errorf("decoding 'go list -json -m' in %s: %w", dir, err)
-			}
-			if m.Path == "" || m.Dir == "" {
-				return fmt.Errorf("'go list -json -m' in %s failed to populate Path and/or Dir", dir)
-			}
-			if _, err := os.Stat(filepath.Join(dir, "vendor")); err == nil {
-				m.hasVendor = true
-			}
-			goroot.modules = append(goroot.modules, m)
-			return nil
-		})
-	})
-
-	if goroot.err != nil {
-		t.Fatal(goroot.err)
-	}
-	return goroot.modules
-}
-
-// goroot caches the list of modules found in the GOROOT source tree.
-var goroot struct {
-	once    sync.Once
-	modules []gorootModule
-	err     error
-}
-
-// TestAllDependenciesVendored ensures that all packages imported within GOROOT
-// are vendored in the corresponding GOROOT module.
+// TestAllDependencies ensures dependencies of all
+// modules in GOROOT are in a consistent state.
 //
-// This property allows offline development within the Go project, and ensures
-// that all dependency changes are presented in the usual code review process.
+// In short mode, it does a limited quick check and stops there.
+// In long mode, it also makes a copy of the entire GOROOT tree
+// and requires network access to perform more thorough checks.
+// Keep this distinction in mind when adding new checks.
 //
-// This test does NOT ensure that the vendored contents match the unmodified
-// contents of the corresponding dependency versions. Such as test would require
-// network access, and would currently either need to copy the entire GOROOT module
-// or explicitly invoke version control to check for changes.
-// (See golang.org/issue/36852 and golang.org/issue/27348.)
-func TestAllDependenciesVendored(t *testing.T) {
+// See issues 36852, 41409, and 43687.
+// (Also see golang.org/issue/27348.)
+func TestAllDependencies(t *testing.T) {
 	goBin := testenv.GoToolPath(t)
 
+	// Ensure that all packages imported within GOROOT
+	// are vendored in the corresponding GOROOT module.
+	//
+	// This property allows offline development within the Go project, and ensures
+	// that all dependency changes are presented in the usual code review process.
+	//
+	// As a quick first-order check, avoid network access and the need to copy the
+	// entire GOROOT tree or explicitly invoke version control to check for changes.
+	// Just check that packages are vendored. (In non-short mode, we go on to also
+	// copy the GOROOT tree and perform more rigorous consistency checks. Jump below
+	// for more details.)
 	for _, m := range findGorootModules(t) {
-		t.Run(m.Path, func(t *testing.T) {
+		// This short test does NOT ensure that the vendored contents match
+		// the unmodified contents of the corresponding dependency versions.
+		t.Run(m.Path+"(quick)", func(t *testing.T) {
 			if m.hasVendor {
 				// Load all of the packages in the module to ensure that their
 				// dependencies are vendored. If any imported package is missing,
@@ -140,6 +82,226 @@ func TestAllDependenciesVendored(t *testing.T) {
 			}
 		})
 	}
+
+	// We now get to the slow, but more thorough part of the test.
+	// Only run it in long test mode.
+	if testing.Short() {
+		return
+	}
+
+	// Ensure that all modules within GOROOT are tidy, vendored, and bundled.
+	// Ensure that the vendored contents match the unmodified contents of the
+	// corresponding dependency versions.
+	//
+	// The non-short section of this test requires network access and the diff
+	// command.
+	//
+	// It makes a temporary copy of the entire GOROOT tree (where it can safely
+	// perform operations that may mutate the tree), executes the same module
+	// maintenance commands that we expect Go developers to run, and then
+	// diffs the potentially modified module copy with the real one in GOROOT.
+	// (We could try to rely on Git to do things differently, but that's not the
+	// path we've chosen at this time. This allows the test to run when the tree
+	// is not checked into Git.)
+
+	testenv.MustHaveExternalNetwork(t)
+	if haveDiff := func() bool {
+		diff, err := exec.Command("diff", "--recursive", "--unified", ".", ".").CombinedOutput()
+		if err != nil || len(diff) != 0 {
+			return false
+		}
+		diff, err = exec.Command("diff", "--recursive", "--unified", ".", "..").CombinedOutput()
+		if err == nil || len(diff) == 0 {
+			return false
+		}
+		return true
+	}(); !haveDiff {
+		// For now, the diff command is a mandatory dependency of this test.
+		// This test will primarily run on longtest builders, since few people
+		// would test the cmd/internal/moddeps package directly, and all.bash
+		// runs tests in short mode. It's fine to skip if diff is unavailable.
+		t.Skip("skipping because a diff command with support for --recursive and --unified flags is unavailable")
+	}
+
+	// Build the bundle binary at the golang.org/x/tools
+	// module version specified in GOROOT/src/cmd/go.mod.
+	bundleDir := t.TempDir()
+	r := runner{Dir: filepath.Join(runtime.GOROOT(), "src/cmd")}
+	r.run(t, goBin, "build", "-mod=readonly", "-o", bundleDir, "golang.org/x/tools/cmd/bundle")
+
+	var gorootCopyDir string
+	for _, m := range findGorootModules(t) {
+		// Create a test-wide GOROOT copy. It can be created once
+		// and reused between subtests whenever they don't fail.
+		//
+		// This is a relatively expensive operation, but it's a pre-requisite to
+		// be able to safely run commands like "go mod tidy", "go mod vendor", and
+		// "go generate" on the GOROOT tree content. Those commands may modify the
+		// tree, and we don't want to happen to the real tree as part of executing
+		// a test.
+		if gorootCopyDir == "" {
+			gorootCopyDir = makeGOROOTCopy(t)
+		}
+
+		t.Run(m.Path+"(thorough)", func(t *testing.T) {
+			defer func() {
+				if t.Failed() {
+					// The test failed, which means it's possible the GOROOT copy
+					// may have been modified. No choice but to reset it for next
+					// module test case. (This is slow, but it happens only during
+					// test failures.)
+					gorootCopyDir = ""
+				}
+			}()
+
+			rel, err := filepath.Rel(runtime.GOROOT(), m.Dir)
+			if err != nil {
+				t.Fatalf("filepath.Rel(%q, %q): %v", runtime.GOROOT(), m.Dir, err)
+			}
+			r := runner{
+				Dir: filepath.Join(gorootCopyDir, rel),
+				Env: append(os.Environ(),
+					// Set GOROOT.
+					"GOROOT="+gorootCopyDir,
+					// Explicitly clear PWD and GOROOT_FINAL so that GOROOT=gorootCopyDir is definitely used.
+					"PWD=",
+					"GOROOT_FINAL=",
+					// Add GOROOTcopy/bin and bundleDir to front of PATH.
+					"PATH="+filepath.Join(gorootCopyDir, "bin")+string(filepath.ListSeparator)+
+						bundleDir+string(filepath.ListSeparator)+os.Getenv("PATH"),
+				),
+			}
+			goBinCopy := filepath.Join(gorootCopyDir, "bin", "go")
+			r.run(t, goBinCopy, "mod", "tidy")   // See issue 43687.
+			r.run(t, goBinCopy, "mod", "verify") // Verify should be a no-op, but test it just in case.
+			r.run(t, goBinCopy, "mod", "vendor") // See issue 36852.
+			pkgs := packagePattern(m.Path)
+			r.run(t, goBinCopy, "generate", `-run=^//go:generate bundle `, pkgs) // See issue 41409.
+			advice := "$ cd " + m.Dir + "\n" +
+				"$ go mod tidy                               # to remove extraneous dependencies\n" +
+				"$ go mod vendor                             # to vendor dependecies\n" +
+				"$ go generate -run=bundle " + pkgs + "               # to regenerate bundled packages\n"
+			if m.Path == "std" {
+				r.run(t, goBinCopy, "generate", "syscall", "internal/syscall/...") // See issue 43440.
+				advice += "$ go generate syscall internal/syscall/...  # to regenerate syscall packages\n"
+			}
+			// TODO(golang.org/issue/43440): Check anything else influenced by dependency versions.
+
+			diff, err := exec.Command("diff", "--recursive", "--unified", r.Dir, m.Dir).CombinedOutput()
+			if err != nil || len(diff) != 0 {
+				t.Errorf(`Module %s in %s is not tidy (-want +got):
+
+%s
+To fix it, run:
+
+%s
+(If module %[1]s is definitely tidy, this could mean
+there's a problem in the go or bundle command.)`, m.Path, m.Dir, diff, advice)
+			}
+		})
+	}
+}
+
+// packagePattern returns a package pattern that matches all packages
+// in the module modulePath, and ideally as few others as possible.
+func packagePattern(modulePath string) string {
+	if modulePath == "std" {
+		return "std"
+	}
+	return modulePath + "/..."
+}
+
+// makeGOROOTCopy makes a temporary copy of the current GOROOT tree.
+// The goal is to allow the calling test t to safely mutate a GOROOT
+// copy without also modifying the original GOROOT.
+//
+// It copies the entire tree as is, with the exception of the GOROOT/.git
+// directory, which is skipped, and the GOROOT/{bin,pkg} directories,
+// which are symlinked. This is done for speed, since a GOROOT tree is
+// functional without being in a Git repository, and bin and pkg are
+// deemed safe to share for the purpose of the TestAllDependencies test.
+func makeGOROOTCopy(t *testing.T) string {
+	t.Helper()
+	gorootCopyDir := t.TempDir()
+	err := filepath.Walk(runtime.GOROOT(), func(src string, info os.FileInfo, err error) error {
+		if err != nil {
+			return err
+		}
+		if src == filepath.Join(runtime.GOROOT(), ".git") {
+			return filepath.SkipDir
+		}
+
+		rel, err := filepath.Rel(runtime.GOROOT(), src)
+		if err != nil {
+			return fmt.Errorf("filepath.Rel(%q, %q): %v", runtime.GOROOT(), src, err)
+		}
+		dst := filepath.Join(gorootCopyDir, rel)
+
+		switch src {
+		case filepath.Join(runtime.GOROOT(), "bin"),
+			filepath.Join(runtime.GOROOT(), "pkg"):
+			// If the OS supports symlinks, use them instead
+			// of copying the bin and pkg directories.
+			if err := os.Symlink(src, dst); err == nil {
+				return filepath.SkipDir
+			}
+		}
+
+		perm := info.Mode() & os.ModePerm
+		if info.Mode()&os.ModeSymlink != 0 {
+			info, err = os.Stat(src)
+			if err != nil {
+				return err
+			}
+			perm = info.Mode() & os.ModePerm
+		}
+
+		// If it's a directory, make a corresponding directory.
+		if info.IsDir() {
+			return os.MkdirAll(dst, perm|0200)
+		}
+
+		// Copy the file bytes.
+		// We can't create a symlink because the file may get modified;
+		// we need to ensure that only the temporary copy is affected.
+		s, err := os.Open(src)
+		if err != nil {
+			return err
+		}
+		defer s.Close()
+		d, err := os.OpenFile(dst, os.O_WRONLY|os.O_CREATE|os.O_EXCL, perm)
+		if err != nil {
+			return err
+		}
+		_, err = io.Copy(d, s)
+		if err != nil {
+			d.Close()
+			return err
+		}
+		return d.Close()
+	})
+	if err != nil {
+		t.Fatal(err)
+	}
+	return gorootCopyDir
+}
+
+type runner struct {
+	Dir string
+	Env []string
+}
+
+// run runs the command and requires that it succeeds.
+func (r runner) run(t *testing.T, args ...string) {
+	t.Helper()
+	cmd := exec.Command(args[0], args[1:]...)
+	cmd.Dir = r.Dir
+	cmd.Env = r.Env
+	out, err := cmd.CombinedOutput()
+	if err != nil {
+		t.Logf("> %s\n", strings.Join(args, " "))
+		t.Fatalf("command failed: %s\n%s", err, out)
+	}
 }
 
 // TestDependencyVersionsConsistent verifies that each module in GOROOT that
@@ -159,8 +321,7 @@ func TestDependencyVersionsConsistent(t *testing.T) {
 	seen := map[string]map[requirement][]gorootModule{} // module path → requirement → set of modules with that requirement
 	for _, m := range findGorootModules(t) {
 		if !m.hasVendor {
-			// TestAllDependenciesVendored will ensure that the module has no
-			// dependencies.
+			// TestAllDependencies will ensure that the module has no dependencies.
 			continue
 		}
 
@@ -233,3 +394,74 @@ func TestDependencyVersionsConsistent(t *testing.T) {
 		}
 	}
 }
+
+type gorootModule struct {
+	Path      string
+	Dir       string
+	hasVendor bool
+}
+
+// findGorootModules returns the list of modules found in the GOROOT source tree.
+func findGorootModules(t *testing.T) []gorootModule {
+	t.Helper()
+	goBin := testenv.GoToolPath(t)
+
+	goroot.once.Do(func() {
+		goroot.err = filepath.WalkDir(runtime.GOROOT(), func(path string, info fs.DirEntry, err error) error {
+			if err != nil {
+				return err
+			}
+			if info.IsDir() && (info.Name() == "vendor" || info.Name() == "testdata") {
+				return filepath.SkipDir
+			}
+			if path == filepath.Join(runtime.GOROOT(), "pkg") {
+				// GOROOT/pkg contains generated artifacts, not source code.
+				//
+				// In https://golang.org/issue/37929 it was observed to somehow contain
+				// a module cache, so it is important to skip. (That helps with the
+				// running time of this test anyway.)
+				return filepath.SkipDir
+			}
+			if info.IsDir() || info.Name() != "go.mod" {
+				return nil
+			}
+			dir := filepath.Dir(path)
+
+			// Use 'go list' to describe the module contained in this directory (but
+			// not its dependencies).
+			cmd := exec.Command(goBin, "list", "-json", "-m")
+			cmd.Env = append(os.Environ(), "GO111MODULE=on")
+			cmd.Dir = dir
+			cmd.Stderr = new(strings.Builder)
+			out, err := cmd.Output()
+			if err != nil {
+				return fmt.Errorf("'go list -json -m' in %s: %w\n%s", dir, err, cmd.Stderr)
+			}
+
+			var m gorootModule
+			if err := json.Unmarshal(out, &m); err != nil {
+				return fmt.Errorf("decoding 'go list -json -m' in %s: %w", dir, err)
+			}
+			if m.Path == "" || m.Dir == "" {
+				return fmt.Errorf("'go list -json -m' in %s failed to populate Path and/or Dir", dir)
+			}
+			if _, err := os.Stat(filepath.Join(dir, "vendor")); err == nil {
+				m.hasVendor = true
+			}
+			goroot.modules = append(goroot.modules, m)
+			return nil
+		})
+	})
+
+	if goroot.err != nil {
+		t.Fatal(goroot.err)
+	}
+	return goroot.modules
+}
+
+// goroot caches the list of modules found in the GOROOT source tree.
+var goroot struct {
+	once    sync.Once
+	modules []gorootModule
+	err     error
+}
diff --git a/src/cmd/internal/obj/arm/obj5.go b/src/cmd/internal/obj/arm/obj5.go
index 29d3a5867d..7de04302d9 100644
--- a/src/cmd/internal/obj/arm/obj5.go
+++ b/src/cmd/internal/obj/arm/obj5.go
@@ -34,6 +34,7 @@ import (
 	"cmd/internal/obj"
 	"cmd/internal/objabi"
 	"cmd/internal/sys"
+	"log"
 )
 
 var progedit_tlsfallback *obj.LSym
@@ -613,6 +614,21 @@ func preprocess(ctxt *obj.Link, cursym *obj.LSym, newprog obj.ProgAlloc) {
 				p.From.Reg = REGSP
 			}
 		}
+
+		if p.To.Type == obj.TYPE_REG && p.To.Reg == REGSP && p.Spadj == 0 {
+			f := c.cursym.Func()
+			if f.FuncFlag&objabi.FuncFlag_SPWRITE == 0 {
+				c.cursym.Func().FuncFlag |= objabi.FuncFlag_SPWRITE
+				if ctxt.Debugvlog || !ctxt.IsAsm {
+					ctxt.Logf("auto-SPWRITE: %s %v\n", c.cursym.Name, p)
+					if !ctxt.IsAsm {
+						ctxt.Diag("invalid auto-SPWRITE in non-assembly")
+						ctxt.DiagFlush()
+						log.Fatalf("bad SPWRITE")
+					}
+				}
+			}
+		}
 	}
 }
 
diff --git a/src/cmd/internal/obj/arm64/a.out.go b/src/cmd/internal/obj/arm64/a.out.go
index 1d1bea505c..7ab9c1475f 100644
--- a/src/cmd/internal/obj/arm64/a.out.go
+++ b/src/cmd/internal/obj/arm64/a.out.go
@@ -239,7 +239,7 @@ const (
 	REGCTXT = REG_R26 // environment for closures
 	REGTMP  = REG_R27 // reserved for liblink
 	REGG    = REG_R28 // G
-	REGFP   = REG_R29 // frame pointer, unused in the Go toolchain
+	REGFP   = REG_R29 // frame pointer
 	REGLINK = REG_R30
 
 	// ARM64 uses R31 as both stack pointer and zero register,
diff --git a/src/cmd/internal/obj/arm64/asm7.go b/src/cmd/internal/obj/arm64/asm7.go
index 1a359f1921..70072cfba4 100644
--- a/src/cmd/internal/obj/arm64/asm7.go
+++ b/src/cmd/internal/obj/arm64/asm7.go
@@ -280,7 +280,7 @@ func MOVCONST(d int64, s int, rt int) uint32 {
 const (
 	// Optab.flag
 	LFROM     = 1 << 0 // p.From uses constant pool
-	LFROM3    = 1 << 1 // p.From3 uses constant pool
+	LFROM128  = 1 << 1 // p.From3<<64+p.From forms a 128-bit constant in literal pool
 	LTO       = 1 << 2 // p.To uses constant pool
 	NOTUSETMP = 1 << 3 // p expands to multiple instructions, but does NOT use REGTMP
 )
@@ -419,7 +419,7 @@ var optab = []Optab{
 	{AMOVD, C_LACON, C_NONE, C_NONE, C_RSP, 34, 8, REGSP, LFROM, 0},
 
 	// Move a large constant to a vector register.
-	{AVMOVQ, C_VCON, C_NONE, C_VCON, C_VREG, 101, 4, 0, LFROM | LFROM3, 0},
+	{AVMOVQ, C_VCON, C_NONE, C_VCON, C_VREG, 101, 4, 0, LFROM128, 0},
 	{AVMOVD, C_VCON, C_NONE, C_NONE, C_VREG, 101, 4, 0, LFROM, 0},
 	{AVMOVS, C_LCON, C_NONE, C_NONE, C_VREG, 101, 4, 0, LFROM, 0},
 
@@ -995,8 +995,8 @@ func span7(ctxt *obj.Link, cursym *obj.LSym, newprog obj.ProgAlloc) {
 		if o.flag&LFROM != 0 {
 			c.addpool(p, &p.From)
 		}
-		if o.flag&LFROM3 != 0 {
-			c.addpool(p, p.GetFrom3())
+		if o.flag&LFROM128 != 0 {
+			c.addpool128(p, &p.From, p.GetFrom3())
 		}
 		if o.flag&LTO != 0 {
 			c.addpool(p, &p.To)
@@ -1201,6 +1201,36 @@ func (c *ctxt7) flushpool(p *obj.Prog, skip int) {
 	}
 }
 
+// addpool128 adds a 128-bit constant to literal pool by two consecutive DWORD
+// instructions, the 128-bit constant is formed by ah.Offset<<64+al.Offset.
+func (c *ctxt7) addpool128(p *obj.Prog, al, ah *obj.Addr) {
+	lit := al.Offset
+	q := c.newprog()
+	q.As = ADWORD
+	q.To.Type = obj.TYPE_CONST
+	q.To.Offset = lit
+	q.Pc = int64(c.pool.size)
+
+	lit = ah.Offset
+	t := c.newprog()
+	t.As = ADWORD
+	t.To.Type = obj.TYPE_CONST
+	t.To.Offset = lit
+	t.Pc = int64(c.pool.size + 8)
+	q.Link = t
+
+	if c.blitrl == nil {
+		c.blitrl = q
+		c.pool.start = uint32(p.Pc)
+	} else {
+		c.elitrl.Link = q
+	}
+
+	c.elitrl = t
+	c.pool.size += 16
+	p.Pool = q
+}
+
 /*
  * MOVD foo(SB), R is actually
  *   MOVD addr, REGTMP
diff --git a/src/cmd/internal/obj/arm64/asm_test.go b/src/cmd/internal/obj/arm64/asm_arm64_test.go
index 9efdb0217f..c6a00f5b94 100644
--- a/src/cmd/internal/obj/arm64/asm_test.go
+++ b/src/cmd/internal/obj/arm64/asm_arm64_test.go
@@ -47,7 +47,7 @@ func TestLarge(t *testing.T) {
 
 	// assemble generated file
 	cmd := exec.Command(testenv.GoToolPath(t), "tool", "asm", "-S", "-o", filepath.Join(dir, "test.o"), tmpfile)
-	cmd.Env = append(os.Environ(), "GOARCH=arm64", "GOOS=linux")
+	cmd.Env = append(os.Environ(), "GOOS=linux")
 	out, err := cmd.CombinedOutput()
 	if err != nil {
 		t.Errorf("Assemble failed: %v, output: %s", err, out)
@@ -62,7 +62,7 @@ func TestLarge(t *testing.T) {
 
 	// build generated file
 	cmd = exec.Command(testenv.GoToolPath(t), "tool", "asm", "-o", filepath.Join(dir, "x.o"), tmpfile)
-	cmd.Env = append(os.Environ(), "GOARCH=arm64", "GOOS=linux")
+	cmd.Env = append(os.Environ(), "GOOS=linux")
 	out, err = cmd.CombinedOutput()
 	if err != nil {
 		t.Errorf("Build failed: %v, output: %s", err, out)
@@ -96,7 +96,7 @@ func TestNoRet(t *testing.T) {
 		t.Fatal(err)
 	}
 	cmd := exec.Command(testenv.GoToolPath(t), "tool", "asm", "-o", filepath.Join(dir, "x.o"), tmpfile)
-	cmd.Env = append(os.Environ(), "GOARCH=arm64", "GOOS=linux")
+	cmd.Env = append(os.Environ(), "GOOS=linux")
 	if out, err := cmd.CombinedOutput(); err != nil {
 		t.Errorf("%v\n%s", err, out)
 	}
@@ -134,7 +134,7 @@ func TestPCALIGN(t *testing.T) {
 			t.Fatal(err)
 		}
 		cmd := exec.Command(testenv.GoToolPath(t), "tool", "asm", "-S", "-o", tmpout, tmpfile)
-		cmd.Env = append(os.Environ(), "GOARCH=arm64", "GOOS=linux")
+		cmd.Env = append(os.Environ(), "GOOS=linux")
 		out, err := cmd.CombinedOutput()
 		if err != nil {
 			t.Errorf("The %s build failed: %v, output: %s", test.name, err, out)
@@ -150,3 +150,13 @@ func TestPCALIGN(t *testing.T) {
 		}
 	}
 }
+
+func testvmovq() (r1, r2 uint64)
+
+// TestVMOVQ checks if the arm64 VMOVQ instruction is working properly.
+func TestVMOVQ(t *testing.T) {
+	a, b := testvmovq()
+	if a != 0x7040201008040201 || b != 0x3040201008040201 {
+		t.Errorf("TestVMOVQ got: a=0x%x, b=0x%x, want: a=0x7040201008040201, b=0x3040201008040201", a, b)
+	}
+}
diff --git a/src/cmd/internal/obj/arm64/asm_arm64_test.s b/src/cmd/internal/obj/arm64/asm_arm64_test.s
new file mode 100644
index 0000000000..9d337a4fd1
--- /dev/null
+++ b/src/cmd/internal/obj/arm64/asm_arm64_test.s
@@ -0,0 +1,14 @@
+// Copyright 2021 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+#include "textflag.h"
+
+// testvmovq() (r1, r2 uint64)
+TEXT ·testvmovq(SB), NOSPLIT, $0-16
+	VMOVQ   $0x7040201008040201, $0x3040201008040201, V1
+	VMOV    V1.D[0], R0
+	VMOV    V1.D[1], R1
+	MOVD    R0, r1+0(FP)
+	MOVD    R1, r2+8(FP)
+	RET
diff --git a/src/cmd/internal/obj/arm64/obj7.go b/src/cmd/internal/obj/arm64/obj7.go
index 0baf51973a..8f7648e5d5 100644
--- a/src/cmd/internal/obj/arm64/obj7.go
+++ b/src/cmd/internal/obj/arm64/obj7.go
@@ -35,6 +35,7 @@ import (
 	"cmd/internal/objabi"
 	"cmd/internal/src"
 	"cmd/internal/sys"
+	"log"
 	"math"
 )
 
@@ -621,25 +622,24 @@ func preprocess(ctxt *obj.Link, cursym *obj.LSym, newprog obj.ProgAlloc) {
 
 			prologueEnd.Pos = prologueEnd.Pos.WithXlogue(src.PosPrologueEnd)
 
-			if objabi.Framepointer_enabled {
-				q1 = obj.Appendp(q1, c.newprog)
-				q1.Pos = p.Pos
-				q1.As = AMOVD
-				q1.From.Type = obj.TYPE_REG
-				q1.From.Reg = REGFP
-				q1.To.Type = obj.TYPE_MEM
-				q1.To.Reg = REGSP
-				q1.To.Offset = -8
+			// Frame pointer.
+			q1 = obj.Appendp(q1, c.newprog)
+			q1.Pos = p.Pos
+			q1.As = AMOVD
+			q1.From.Type = obj.TYPE_REG
+			q1.From.Reg = REGFP
+			q1.To.Type = obj.TYPE_MEM
+			q1.To.Reg = REGSP
+			q1.To.Offset = -8
 
-				q1 = obj.Appendp(q1, c.newprog)
-				q1.Pos = p.Pos
-				q1.As = ASUB
-				q1.From.Type = obj.TYPE_CONST
-				q1.From.Offset = 8
-				q1.Reg = REGSP
-				q1.To.Type = obj.TYPE_REG
-				q1.To.Reg = REGFP
-			}
+			q1 = obj.Appendp(q1, c.newprog)
+			q1.Pos = p.Pos
+			q1.As = ASUB
+			q1.From.Type = obj.TYPE_CONST
+			q1.From.Offset = 8
+			q1.Reg = REGSP
+			q1.To.Type = obj.TYPE_REG
+			q1.To.Reg = REGFP
 
 			if c.cursym.Func().Text.From.Sym.Wrapper() {
 				// if(g->panic != nil && g->panic->argp == FP) g->panic->argp = bottom-of-frame
@@ -764,28 +764,26 @@ func preprocess(ctxt *obj.Link, cursym *obj.LSym, newprog obj.ProgAlloc) {
 					p.To.Reg = REGSP
 					p.Spadj = -c.autosize
 
-					if objabi.Framepointer_enabled {
-						p = obj.Appendp(p, c.newprog)
-						p.As = ASUB
-						p.From.Type = obj.TYPE_CONST
-						p.From.Offset = 8
-						p.Reg = REGSP
-						p.To.Type = obj.TYPE_REG
-						p.To.Reg = REGFP
-					}
+					// Frame pointer.
+					p = obj.Appendp(p, c.newprog)
+					p.As = ASUB
+					p.From.Type = obj.TYPE_CONST
+					p.From.Offset = 8
+					p.Reg = REGSP
+					p.To.Type = obj.TYPE_REG
+					p.To.Reg = REGFP
 				}
 			} else {
 				/* want write-back pre-indexed SP+autosize -> SP, loading REGLINK*/
 
-				if objabi.Framepointer_enabled {
-					p.As = AMOVD
-					p.From.Type = obj.TYPE_MEM
-					p.From.Reg = REGSP
-					p.From.Offset = -8
-					p.To.Type = obj.TYPE_REG
-					p.To.Reg = REGFP
-					p = obj.Appendp(p, c.newprog)
-				}
+				// Frame pointer.
+				p.As = AMOVD
+				p.From.Type = obj.TYPE_MEM
+				p.From.Reg = REGSP
+				p.From.Offset = -8
+				p.To.Type = obj.TYPE_REG
+				p.To.Reg = REGFP
+				p = obj.Appendp(p, c.newprog)
 
 				aoffset := c.autosize
 
@@ -820,6 +818,28 @@ func preprocess(ctxt *obj.Link, cursym *obj.LSym, newprog obj.ProgAlloc) {
 				}
 			}
 
+			// If enabled, this code emits 'MOV PC, R27' before every 'MOV LR, PC',
+			// so that if you are debugging a low-level crash where PC and LR are zero,
+			// you can look at R27 to see what jumped to the zero.
+			// This is useful when bringing up Go on a new system.
+			// (There is similar code in ../ppc64/obj9.go:/if.false.)
+			const debugRETZERO = false
+			if debugRETZERO {
+				if p.As != obj.ARET {
+					q = newprog()
+					q.Pos = p.Pos
+					q.Link = p.Link
+					p.Link = q
+					p = q
+				}
+				p.As = AADR
+				p.From.Type = obj.TYPE_BRANCH
+				p.From.Offset = 0
+				p.To.Type = obj.TYPE_REG
+				p.To.Reg = REGTMP
+
+			}
+
 			if p.As != obj.ARET {
 				q = newprog()
 				q.Pos = p.Pos
@@ -865,109 +885,120 @@ func preprocess(ctxt *obj.Link, cursym *obj.LSym, newprog obj.ProgAlloc) {
 			}
 
 		case obj.ADUFFCOPY:
-			if objabi.Framepointer_enabled {
-				//  ADR	ret_addr, R27
-				//  STP	(FP, R27), -24(SP)
-				//  SUB	24, SP, FP
-				//  DUFFCOPY
-				// ret_addr:
-				//  SUB	8, SP, FP
+			//  ADR	ret_addr, R27
+			//  STP	(FP, R27), -24(SP)
+			//  SUB	24, SP, FP
+			//  DUFFCOPY
+			// ret_addr:
+			//  SUB	8, SP, FP
 
-				q1 := p
-				// copy DUFFCOPY from q1 to q4
-				q4 := obj.Appendp(p, c.newprog)
-				q4.Pos = p.Pos
-				q4.As = obj.ADUFFCOPY
-				q4.To = p.To
+			q1 := p
+			// copy DUFFCOPY from q1 to q4
+			q4 := obj.Appendp(p, c.newprog)
+			q4.Pos = p.Pos
+			q4.As = obj.ADUFFCOPY
+			q4.To = p.To
 
-				q1.As = AADR
-				q1.From.Type = obj.TYPE_BRANCH
-				q1.To.Type = obj.TYPE_REG
-				q1.To.Reg = REG_R27
+			q1.As = AADR
+			q1.From.Type = obj.TYPE_BRANCH
+			q1.To.Type = obj.TYPE_REG
+			q1.To.Reg = REG_R27
 
-				q2 := obj.Appendp(q1, c.newprog)
-				q2.Pos = p.Pos
-				q2.As = ASTP
-				q2.From.Type = obj.TYPE_REGREG
-				q2.From.Reg = REGFP
-				q2.From.Offset = int64(REG_R27)
-				q2.To.Type = obj.TYPE_MEM
-				q2.To.Reg = REGSP
-				q2.To.Offset = -24
+			q2 := obj.Appendp(q1, c.newprog)
+			q2.Pos = p.Pos
+			q2.As = ASTP
+			q2.From.Type = obj.TYPE_REGREG
+			q2.From.Reg = REGFP
+			q2.From.Offset = int64(REG_R27)
+			q2.To.Type = obj.TYPE_MEM
+			q2.To.Reg = REGSP
+			q2.To.Offset = -24
 
-				// maintaine FP for DUFFCOPY
-				q3 := obj.Appendp(q2, c.newprog)
-				q3.Pos = p.Pos
-				q3.As = ASUB
-				q3.From.Type = obj.TYPE_CONST
-				q3.From.Offset = 24
-				q3.Reg = REGSP
-				q3.To.Type = obj.TYPE_REG
-				q3.To.Reg = REGFP
+			// maintain FP for DUFFCOPY
+			q3 := obj.Appendp(q2, c.newprog)
+			q3.Pos = p.Pos
+			q3.As = ASUB
+			q3.From.Type = obj.TYPE_CONST
+			q3.From.Offset = 24
+			q3.Reg = REGSP
+			q3.To.Type = obj.TYPE_REG
+			q3.To.Reg = REGFP
 
-				q5 := obj.Appendp(q4, c.newprog)
-				q5.Pos = p.Pos
-				q5.As = ASUB
-				q5.From.Type = obj.TYPE_CONST
-				q5.From.Offset = 8
-				q5.Reg = REGSP
-				q5.To.Type = obj.TYPE_REG
-				q5.To.Reg = REGFP
-				q1.From.SetTarget(q5)
-				p = q5
-			}
+			q5 := obj.Appendp(q4, c.newprog)
+			q5.Pos = p.Pos
+			q5.As = ASUB
+			q5.From.Type = obj.TYPE_CONST
+			q5.From.Offset = 8
+			q5.Reg = REGSP
+			q5.To.Type = obj.TYPE_REG
+			q5.To.Reg = REGFP
+			q1.From.SetTarget(q5)
+			p = q5
 
 		case obj.ADUFFZERO:
-			if objabi.Framepointer_enabled {
-				//  ADR	ret_addr, R27
-				//  STP	(FP, R27), -24(SP)
-				//  SUB	24, SP, FP
-				//  DUFFZERO
-				// ret_addr:
-				//  SUB	8, SP, FP
+			//  ADR	ret_addr, R27
+			//  STP	(FP, R27), -24(SP)
+			//  SUB	24, SP, FP
+			//  DUFFZERO
+			// ret_addr:
+			//  SUB	8, SP, FP
 
-				q1 := p
-				// copy DUFFZERO from q1 to q4
-				q4 := obj.Appendp(p, c.newprog)
-				q4.Pos = p.Pos
-				q4.As = obj.ADUFFZERO
-				q4.To = p.To
+			q1 := p
+			// copy DUFFZERO from q1 to q4
+			q4 := obj.Appendp(p, c.newprog)
+			q4.Pos = p.Pos
+			q4.As = obj.ADUFFZERO
+			q4.To = p.To
 
-				q1.As = AADR
-				q1.From.Type = obj.TYPE_BRANCH
-				q1.To.Type = obj.TYPE_REG
-				q1.To.Reg = REG_R27
+			q1.As = AADR
+			q1.From.Type = obj.TYPE_BRANCH
+			q1.To.Type = obj.TYPE_REG
+			q1.To.Reg = REG_R27
 
-				q2 := obj.Appendp(q1, c.newprog)
-				q2.Pos = p.Pos
-				q2.As = ASTP
-				q2.From.Type = obj.TYPE_REGREG
-				q2.From.Reg = REGFP
-				q2.From.Offset = int64(REG_R27)
-				q2.To.Type = obj.TYPE_MEM
-				q2.To.Reg = REGSP
-				q2.To.Offset = -24
+			q2 := obj.Appendp(q1, c.newprog)
+			q2.Pos = p.Pos
+			q2.As = ASTP
+			q2.From.Type = obj.TYPE_REGREG
+			q2.From.Reg = REGFP
+			q2.From.Offset = int64(REG_R27)
+			q2.To.Type = obj.TYPE_MEM
+			q2.To.Reg = REGSP
+			q2.To.Offset = -24
 
-				// maintaine FP for DUFFZERO
-				q3 := obj.Appendp(q2, c.newprog)
-				q3.Pos = p.Pos
-				q3.As = ASUB
-				q3.From.Type = obj.TYPE_CONST
-				q3.From.Offset = 24
-				q3.Reg = REGSP
-				q3.To.Type = obj.TYPE_REG
-				q3.To.Reg = REGFP
+			// maintain FP for DUFFZERO
+			q3 := obj.Appendp(q2, c.newprog)
+			q3.Pos = p.Pos
+			q3.As = ASUB
+			q3.From.Type = obj.TYPE_CONST
+			q3.From.Offset = 24
+			q3.Reg = REGSP
+			q3.To.Type = obj.TYPE_REG
+			q3.To.Reg = REGFP
 
-				q5 := obj.Appendp(q4, c.newprog)
-				q5.Pos = p.Pos
-				q5.As = ASUB
-				q5.From.Type = obj.TYPE_CONST
-				q5.From.Offset = 8
-				q5.Reg = REGSP
-				q5.To.Type = obj.TYPE_REG
-				q5.To.Reg = REGFP
-				q1.From.SetTarget(q5)
-				p = q5
+			q5 := obj.Appendp(q4, c.newprog)
+			q5.Pos = p.Pos
+			q5.As = ASUB
+			q5.From.Type = obj.TYPE_CONST
+			q5.From.Offset = 8
+			q5.Reg = REGSP
+			q5.To.Type = obj.TYPE_REG
+			q5.To.Reg = REGFP
+			q1.From.SetTarget(q5)
+			p = q5
+		}
+
+		if p.To.Type == obj.TYPE_REG && p.To.Reg == REGSP && p.Spadj == 0 {
+			f := c.cursym.Func()
+			if f.FuncFlag&objabi.FuncFlag_SPWRITE == 0 {
+				c.cursym.Func().FuncFlag |= objabi.FuncFlag_SPWRITE
+				if ctxt.Debugvlog || !ctxt.IsAsm {
+					ctxt.Logf("auto-SPWRITE: %s %v\n", c.cursym.Name, p)
+					if !ctxt.IsAsm {
+						ctxt.Diag("invalid auto-SPWRITE in non-assembly")
+						ctxt.DiagFlush()
+						log.Fatalf("bad SPWRITE")
+					}
+				}
 			}
 		}
 	}
diff --git a/src/cmd/internal/obj/link.go b/src/cmd/internal/obj/link.go
index 8c8ff587ff..a48db3bdc8 100644
--- a/src/cmd/internal/obj/link.go
+++ b/src/cmd/internal/obj/link.go
@@ -39,6 +39,7 @@ import (
 	"cmd/internal/sys"
 	"fmt"
 	"sync"
+	"sync/atomic"
 )
 
 // An Addr is an argument to an instruction.
@@ -250,6 +251,12 @@ func (a *Addr) SetTarget(t *Prog) {
 	a.Val = t
 }
 
+func (a *Addr) SetConst(v int64) {
+	a.Sym = nil
+	a.Type = TYPE_CONST
+	a.Offset = v
+}
+
 // Prog describes a single machine instruction.
 //
 // The general instruction form is:
@@ -447,6 +454,7 @@ type FuncInfo struct {
 	Locals   int32
 	Align    int32
 	FuncID   objabi.FuncID
+	FuncFlag objabi.FuncFlag
 	Text     *Prog
 	Autot    map[*LSym]struct{}
 	Pcln     Pcln
@@ -612,10 +620,6 @@ const (
 	// target of an inline during compilation
 	AttrWasInlined
 
-	// TopFrame means that this function is an entry point and unwinders should not
-	// keep unwinding beyond this frame.
-	AttrTopFrame
-
 	// Indexed indicates this symbol has been assigned with an index (when using the
 	// new object file format).
 	AttrIndexed
@@ -629,6 +633,10 @@ const (
 	// ContentAddressable indicates this is a content-addressable symbol.
 	AttrContentAddressable
 
+	// ABI wrapper is set for compiler-generated text symbols that
+	// convert between ABI0 and ABIInternal calling conventions.
+	AttrABIWrapper
+
 	// attrABIBase is the value at which the ABI is encoded in
 	// Attribute. This must be last; all bits after this are
 	// assumed to be an ABI value.
@@ -637,36 +645,51 @@ const (
 	attrABIBase
 )
 
-func (a Attribute) DuplicateOK() bool        { return a&AttrDuplicateOK != 0 }
-func (a Attribute) MakeTypelink() bool       { return a&AttrMakeTypelink != 0 }
-func (a Attribute) CFunc() bool              { return a&AttrCFunc != 0 }
-func (a Attribute) NoSplit() bool            { return a&AttrNoSplit != 0 }
-func (a Attribute) Leaf() bool               { return a&AttrLeaf != 0 }
-func (a Attribute) OnList() bool             { return a&AttrOnList != 0 }
-func (a Attribute) ReflectMethod() bool      { return a&AttrReflectMethod != 0 }
-func (a Attribute) Local() bool              { return a&AttrLocal != 0 }
-func (a Attribute) Wrapper() bool            { return a&AttrWrapper != 0 }
-func (a Attribute) NeedCtxt() bool           { return a&AttrNeedCtxt != 0 }
-func (a Attribute) NoFrame() bool            { return a&AttrNoFrame != 0 }
-func (a Attribute) Static() bool             { return a&AttrStatic != 0 }
-func (a Attribute) WasInlined() bool         { return a&AttrWasInlined != 0 }
-func (a Attribute) TopFrame() bool           { return a&AttrTopFrame != 0 }
-func (a Attribute) Indexed() bool            { return a&AttrIndexed != 0 }
-func (a Attribute) UsedInIface() bool        { return a&AttrUsedInIface != 0 }
-func (a Attribute) ContentAddressable() bool { return a&AttrContentAddressable != 0 }
+func (a *Attribute) load() Attribute { return Attribute(atomic.LoadUint32((*uint32)(a))) }
+
+func (a *Attribute) DuplicateOK() bool        { return a.load()&AttrDuplicateOK != 0 }
+func (a *Attribute) MakeTypelink() bool       { return a.load()&AttrMakeTypelink != 0 }
+func (a *Attribute) CFunc() bool              { return a.load()&AttrCFunc != 0 }
+func (a *Attribute) NoSplit() bool            { return a.load()&AttrNoSplit != 0 }
+func (a *Attribute) Leaf() bool               { return a.load()&AttrLeaf != 0 }
+func (a *Attribute) OnList() bool             { return a.load()&AttrOnList != 0 }
+func (a *Attribute) ReflectMethod() bool      { return a.load()&AttrReflectMethod != 0 }
+func (a *Attribute) Local() bool              { return a.load()&AttrLocal != 0 }
+func (a *Attribute) Wrapper() bool            { return a.load()&AttrWrapper != 0 }
+func (a *Attribute) NeedCtxt() bool           { return a.load()&AttrNeedCtxt != 0 }
+func (a *Attribute) NoFrame() bool            { return a.load()&AttrNoFrame != 0 }
+func (a *Attribute) Static() bool             { return a.load()&AttrStatic != 0 }
+func (a *Attribute) WasInlined() bool         { return a.load()&AttrWasInlined != 0 }
+func (a *Attribute) Indexed() bool            { return a.load()&AttrIndexed != 0 }
+func (a *Attribute) UsedInIface() bool        { return a.load()&AttrUsedInIface != 0 }
+func (a *Attribute) ContentAddressable() bool { return a.load()&AttrContentAddressable != 0 }
+func (a *Attribute) ABIWrapper() bool         { return a.load()&AttrABIWrapper != 0 }
 
 func (a *Attribute) Set(flag Attribute, value bool) {
-	if value {
-		*a |= flag
-	} else {
-		*a &^= flag
+	for {
+		v0 := a.load()
+		v := v0
+		if value {
+			v |= flag
+		} else {
+			v &^= flag
+		}
+		if atomic.CompareAndSwapUint32((*uint32)(a), uint32(v0), uint32(v)) {
+			break
+		}
 	}
 }
 
-func (a Attribute) ABI() ABI { return ABI(a / attrABIBase) }
+func (a *Attribute) ABI() ABI { return ABI(a.load() / attrABIBase) }
 func (a *Attribute) SetABI(abi ABI) {
 	const mask = 1 // Only one ABI bit for now.
-	*a = (*a &^ (mask * attrABIBase)) | Attribute(abi)*attrABIBase
+	for {
+		v0 := a.load()
+		v := (v0 &^ (mask * attrABIBase)) | Attribute(abi)*attrABIBase
+		if atomic.CompareAndSwapUint32((*uint32)(a), uint32(v0), uint32(v)) {
+			break
+		}
+	}
 }
 
 var textAttrStrings = [...]struct {
@@ -686,13 +709,13 @@ var textAttrStrings = [...]struct {
 	{bit: AttrNoFrame, s: "NOFRAME"},
 	{bit: AttrStatic, s: "STATIC"},
 	{bit: AttrWasInlined, s: ""},
-	{bit: AttrTopFrame, s: "TOPFRAME"},
 	{bit: AttrIndexed, s: ""},
 	{bit: AttrContentAddressable, s: ""},
+	{bit: AttrABIWrapper, s: "ABIWRAPPER"},
 }
 
-// TextAttrString formats a for printing in as part of a TEXT prog.
-func (a Attribute) TextAttrString() string {
+// String formats a for printing in as part of a TEXT prog.
+func (a Attribute) String() string {
 	var s string
 	for _, x := range textAttrStrings {
 		if a&x.bit != 0 {
@@ -718,13 +741,25 @@ func (a Attribute) TextAttrString() string {
 	return s
 }
 
+// TextAttrString formats the symbol attributes for printing in as part of a TEXT prog.
+func (s *LSym) TextAttrString() string {
+	attr := s.Attribute.String()
+	if s.Func().FuncFlag&objabi.FuncFlag_TOPFRAME != 0 {
+		if attr != "" {
+			attr += "|"
+		}
+		attr += "TOPFRAME"
+	}
+	return attr
+}
+
 func (s *LSym) String() string {
 	return s.Name
 }
 
 // The compiler needs *LSym to be assignable to cmd/compile/internal/ssa.Sym.
-func (s *LSym) CanBeAnSSASym() {
-}
+func (*LSym) CanBeAnSSASym() {}
+func (*LSym) CanBeAnSSAAux() {}
 
 type Pcln struct {
 	// Aux symbols for pcln
@@ -754,6 +789,17 @@ type Auto struct {
 	Gotype  *LSym
 }
 
+// RegArg provides spill/fill information for a register-resident argument
+// to a function.  These need spilling/filling in the safepoint/stackgrowth case.
+// At the time of fill/spill, the offset must be adjusted by the architecture-dependent
+// adjustment to hardware SP that occurs in a call instruction.  E.g., for AMD64,
+// at Offset+8 because the return address was pushed.
+type RegArg struct {
+	Addr           Addr
+	Reg            int16
+	Spill, Unspill As
+}
+
 // Link holds the context for writing object code from a compiler
 // to be linker input or for reading that input into the linker.
 type Link struct {
@@ -784,6 +830,7 @@ type Link struct {
 	DebugInfo          func(fn *LSym, info *LSym, curfn interface{}) ([]dwarf.Scope, dwarf.InlCalls) // if non-nil, curfn is a *gc.Node
 	GenAbstractFunc    func(fn *LSym)
 	Errors             int
+	RegArgs            []RegArg
 
 	InParallel    bool // parallel backend phase in effect
 	UseBASEntries bool // use Base Address Selection Entries in location lists and PC ranges
@@ -832,6 +879,32 @@ func (ctxt *Link) Logf(format string, args ...interface{}) {
 	ctxt.Bso.Flush()
 }
 
+func (ctxt *Link) SpillRegisterArgs(last *Prog, pa ProgAlloc) *Prog {
+	// Spill register args.
+	for _, ra := range ctxt.RegArgs {
+		spill := Appendp(last, pa)
+		spill.As = ra.Spill
+		spill.From.Type = TYPE_REG
+		spill.From.Reg = ra.Reg
+		spill.To = ra.Addr
+		last = spill
+	}
+	return last
+}
+
+func (ctxt *Link) UnspillRegisterArgs(last *Prog, pa ProgAlloc) *Prog {
+	// Unspill any spilled register args
+	for _, ra := range ctxt.RegArgs {
+		unspill := Appendp(last, pa)
+		unspill.As = ra.Unspill
+		unspill.From = ra.Addr
+		unspill.To.Type = TYPE_REG
+		unspill.To.Reg = ra.Reg
+		last = unspill
+	}
+	return last
+}
+
 // The smallest possible offset from the hardware stack pointer to a local
 // variable on the stack. Architectures that use a link register save its value
 // on the stack in the function prologue and so always have a pointer between
diff --git a/src/cmd/internal/obj/mips/obj0.go b/src/cmd/internal/obj/mips/obj0.go
index 135a8df3aa..91bba90d41 100644
--- a/src/cmd/internal/obj/mips/obj0.go
+++ b/src/cmd/internal/obj/mips/obj0.go
@@ -35,6 +35,7 @@ import (
 	"cmd/internal/sys"
 	"encoding/binary"
 	"fmt"
+	"log"
 	"math"
 )
 
@@ -536,6 +537,21 @@ func preprocess(ctxt *obj.Link, cursym *obj.LSym, newprog obj.ProgAlloc) {
 				p.From.Reg = REGSP
 			}
 		}
+
+		if p.To.Type == obj.TYPE_REG && p.To.Reg == REGSP && p.Spadj == 0 {
+			f := c.cursym.Func()
+			if f.FuncFlag&objabi.FuncFlag_SPWRITE == 0 {
+				c.cursym.Func().FuncFlag |= objabi.FuncFlag_SPWRITE
+				if ctxt.Debugvlog || !ctxt.IsAsm {
+					ctxt.Logf("auto-SPWRITE: %s %v\n", c.cursym.Name, p)
+					if !ctxt.IsAsm {
+						ctxt.Diag("invalid auto-SPWRITE in non-assembly")
+						ctxt.DiagFlush()
+						log.Fatalf("bad SPWRITE")
+					}
+				}
+			}
+		}
 	}
 
 	if c.ctxt.Arch.Family == sys.MIPS {
diff --git a/src/cmd/internal/obj/objfile.go b/src/cmd/internal/obj/objfile.go
index bb58b4f0c2..85f0570e5d 100644
--- a/src/cmd/internal/obj/objfile.go
+++ b/src/cmd/internal/obj/objfile.go
@@ -330,9 +330,6 @@ func (w *writer) Sym(s *LSym) {
 	if s.ReflectMethod() {
 		flag |= goobj.SymFlagReflectMethod
 	}
-	if s.TopFrame() {
-		flag |= goobj.SymFlagTopFrame
-	}
 	if strings.HasPrefix(s.Name, "type.") && s.Name[5] != '.' && s.Type == objabi.SRODATA {
 		flag |= goobj.SymFlagGoType
 	}
@@ -673,9 +670,10 @@ func genFuncInfoSyms(ctxt *Link) {
 			continue
 		}
 		o := goobj.FuncInfo{
-			Args:   uint32(fn.Args),
-			Locals: uint32(fn.Locals),
-			FuncID: objabi.FuncID(fn.FuncID),
+			Args:     uint32(fn.Args),
+			Locals:   uint32(fn.Locals),
+			FuncID:   fn.FuncID,
+			FuncFlag: fn.FuncFlag,
 		}
 		pc := &fn.Pcln
 		o.Pcsp = makeSymRef(preparePcSym(pc.Pcsp))
@@ -788,7 +786,7 @@ func (ctxt *Link) writeSymDebugNamed(s *LSym, name string) {
 	if s.NoSplit() {
 		fmt.Fprintf(ctxt.Bso, "nosplit ")
 	}
-	if s.TopFrame() {
+	if s.Func() != nil && s.Func().FuncFlag&objabi.FuncFlag_TOPFRAME != 0 {
 		fmt.Fprintf(ctxt.Bso, "topframe ")
 	}
 	fmt.Fprintf(ctxt.Bso, "size=%d", s.Size)
diff --git a/src/cmd/internal/obj/plist.go b/src/cmd/internal/obj/plist.go
index 2b096996f7..177083261c 100644
--- a/src/cmd/internal/obj/plist.go
+++ b/src/cmd/internal/obj/plist.go
@@ -80,6 +80,11 @@ func Flushplist(ctxt *Link, plist *Plist, newprog ProgAlloc, myimportpath string
 		if !strings.HasPrefix(s.Name, "\"\".") {
 			continue
 		}
+		if s.ABIWrapper() {
+			// Don't create an args_stackmap symbol reference for an ABI
+			// wrapper function
+			continue
+		}
 		found := false
 		for p := s.Func().Text; p != nil; p = p.Link {
 			if p.As == AFUNCDATA && p.From.Type == TYPE_CONST && p.From.Offset == objabi.FUNCDATA_ArgsPointerMaps {
@@ -129,14 +134,15 @@ func (ctxt *Link) InitTextSym(s *LSym, flag int) {
 	}
 	name := strings.Replace(s.Name, "\"\"", ctxt.Pkgpath, -1)
 	s.Func().FuncID = objabi.GetFuncID(name, flag&WRAPPER != 0)
+	s.Func().FuncFlag = toFuncFlag(flag)
 	s.Set(AttrOnList, true)
 	s.Set(AttrDuplicateOK, flag&DUPOK != 0)
 	s.Set(AttrNoSplit, flag&NOSPLIT != 0)
 	s.Set(AttrReflectMethod, flag&REFLECTMETHOD != 0)
 	s.Set(AttrWrapper, flag&WRAPPER != 0)
+	s.Set(AttrABIWrapper, flag&ABIWRAPPER != 0)
 	s.Set(AttrNeedCtxt, flag&NEEDCTXT != 0)
 	s.Set(AttrNoFrame, flag&NOFRAME != 0)
-	s.Set(AttrTopFrame, flag&TOPFRAME != 0)
 	s.Type = objabi.STEXT
 	ctxt.Text = append(ctxt.Text, s)
 
@@ -144,6 +150,14 @@ func (ctxt *Link) InitTextSym(s *LSym, flag int) {
 	ctxt.dwarfSym(s)
 }
 
+func toFuncFlag(flag int) objabi.FuncFlag {
+	var out objabi.FuncFlag
+	if flag&TOPFRAME != 0 {
+		out |= objabi.FuncFlag_TOPFRAME
+	}
+	return out
+}
+
 func (ctxt *Link) Globl(s *LSym, size int64, flag int) {
 	if s.OnList() {
 		ctxt.Diag("symbol %s listed multiple times", s.Name)
diff --git a/src/cmd/internal/obj/ppc64/obj9.go b/src/cmd/internal/obj/ppc64/obj9.go
index fddf552156..a77be29cf0 100644
--- a/src/cmd/internal/obj/ppc64/obj9.go
+++ b/src/cmd/internal/obj/ppc64/obj9.go
@@ -34,6 +34,7 @@ import (
 	"cmd/internal/objabi"
 	"cmd/internal/src"
 	"cmd/internal/sys"
+	"log"
 )
 
 func progedit(ctxt *obj.Link, p *obj.Prog, newprog obj.ProgAlloc) {
@@ -984,6 +985,21 @@ func preprocess(ctxt *obj.Link, cursym *obj.LSym, newprog obj.ProgAlloc) {
 				p.From.Reg = REGSP
 			}
 		}
+
+		if p.To.Type == obj.TYPE_REG && p.To.Reg == REGSP && p.Spadj == 0 && p.As != ACMPU {
+			f := c.cursym.Func()
+			if f.FuncFlag&objabi.FuncFlag_SPWRITE == 0 {
+				c.cursym.Func().FuncFlag |= objabi.FuncFlag_SPWRITE
+				if ctxt.Debugvlog || !ctxt.IsAsm {
+					ctxt.Logf("auto-SPWRITE: %s %v\n", c.cursym.Name, p)
+					if !ctxt.IsAsm {
+						ctxt.Diag("invalid auto-SPWRITE in non-assembly")
+						ctxt.DiagFlush()
+						log.Fatalf("bad SPWRITE")
+					}
+				}
+			}
+		}
 	}
 }
 
diff --git a/src/cmd/internal/obj/riscv/obj.go b/src/cmd/internal/obj/riscv/obj.go
index 9257a6453a..d104f1cfa5 100644
--- a/src/cmd/internal/obj/riscv/obj.go
+++ b/src/cmd/internal/obj/riscv/obj.go
@@ -25,6 +25,7 @@ import (
 	"cmd/internal/objabi"
 	"cmd/internal/sys"
 	"fmt"
+	"log"
 )
 
 func buildop(ctxt *obj.Link) {}
@@ -119,7 +120,7 @@ func progedit(ctxt *obj.Link, p *obj.Prog, newprog obj.ProgAlloc) {
 			switch p.To.Name {
 			case obj.NAME_NONE:
 				p.As = AJALR
-			case obj.NAME_EXTERN:
+			case obj.NAME_EXTERN, obj.NAME_STATIC:
 				// Handled in preprocess.
 			default:
 				ctxt.Diag("unsupported name %d for %v", p.To.Name, p)
@@ -267,7 +268,7 @@ func rewriteMOV(ctxt *obj.Link, newprog obj.ProgAlloc, p *obj.Prog) {
 				p.As = movToStore(p.As)
 				p.To.Reg = addrToReg(p.To)
 
-			case obj.NAME_EXTERN:
+			case obj.NAME_EXTERN, obj.NAME_STATIC:
 				// AUIPC $off_hi, TMP
 				// S $off_lo, TMP, R
 				as := p.As
@@ -666,7 +667,7 @@ func preprocess(ctxt *obj.Link, cursym *obj.LSym, newprog obj.ProgAlloc) {
 			switch p.To.Type {
 			case obj.TYPE_MEM:
 				switch p.To.Name {
-				case obj.NAME_EXTERN:
+				case obj.NAME_EXTERN, obj.NAME_STATIC:
 					// JMP to symbol.
 					jalrToSym(ctxt, p, newprog, REG_ZERO)
 				}
@@ -716,6 +717,21 @@ func preprocess(ctxt *obj.Link, cursym *obj.LSym, newprog obj.ProgAlloc) {
 				p.Spadj = int32(-p.From.Offset)
 			}
 		}
+
+		if p.To.Type == obj.TYPE_REG && p.To.Reg == REGSP && p.Spadj == 0 {
+			f := cursym.Func()
+			if f.FuncFlag&objabi.FuncFlag_SPWRITE == 0 {
+				f.FuncFlag |= objabi.FuncFlag_SPWRITE
+				if ctxt.Debugvlog || !ctxt.IsAsm {
+					ctxt.Logf("auto-SPWRITE: %s %v\n", cursym.Name, p)
+					if !ctxt.IsAsm {
+						ctxt.Diag("invalid auto-SPWRITE in non-assembly")
+						ctxt.DiagFlush()
+						log.Fatalf("bad SPWRITE")
+					}
+				}
+			}
+		}
 	}
 
 	// Rewrite MOV pseudo-instructions. This cannot be done in
diff --git a/src/cmd/internal/obj/s390x/condition_code.go b/src/cmd/internal/obj/s390x/condition_code.go
index 764fc5bc6a..f498fd6f77 100644
--- a/src/cmd/internal/obj/s390x/condition_code.go
+++ b/src/cmd/internal/obj/s390x/condition_code.go
@@ -124,3 +124,5 @@ func (c CCMask) String() string {
 	// invalid
 	return fmt.Sprintf("Invalid (%#x)", c)
 }
+
+func (CCMask) CanBeAnSSAAux() {}
diff --git a/src/cmd/internal/obj/s390x/objz.go b/src/cmd/internal/obj/s390x/objz.go
index 970cf827d6..a02c4fc17f 100644
--- a/src/cmd/internal/obj/s390x/objz.go
+++ b/src/cmd/internal/obj/s390x/objz.go
@@ -33,6 +33,7 @@ import (
 	"cmd/internal/obj"
 	"cmd/internal/objabi"
 	"cmd/internal/sys"
+	"log"
 	"math"
 )
 
@@ -545,6 +546,21 @@ func preprocess(ctxt *obj.Link, cursym *obj.LSym, newprog obj.ProgAlloc) {
 				p.From.Reg = REGSP
 			}
 		}
+
+		if p.To.Type == obj.TYPE_REG && p.To.Reg == REGSP && p.Spadj == 0 {
+			f := c.cursym.Func()
+			if f.FuncFlag&objabi.FuncFlag_SPWRITE == 0 {
+				c.cursym.Func().FuncFlag |= objabi.FuncFlag_SPWRITE
+				if ctxt.Debugvlog || !ctxt.IsAsm {
+					ctxt.Logf("auto-SPWRITE: %s\n", c.cursym.Name)
+					if !ctxt.IsAsm {
+						ctxt.Diag("invalid auto-SPWRITE in non-assembly")
+						ctxt.DiagFlush()
+						log.Fatalf("bad SPWRITE")
+					}
+				}
+			}
+		}
 	}
 	if wasSplit {
 		c.stacksplitPost(pLast, pPre, pPreempt, autosize) // emit post part of split check
diff --git a/src/cmd/internal/obj/s390x/rotate.go b/src/cmd/internal/obj/s390x/rotate.go
index 7dbc45e648..5407c8df11 100644
--- a/src/cmd/internal/obj/s390x/rotate.go
+++ b/src/cmd/internal/obj/s390x/rotate.go
@@ -28,9 +28,9 @@ import (
 // input left by. Note that this rotation is performed
 // before the masked region is used.
 type RotateParams struct {
-	Start  int8 // big-endian start bit index [0..63]
-	End    int8 // big-endian end bit index [0..63]
-	Amount int8 // amount to rotate left
+	Start  uint8 // big-endian start bit index [0..63]
+	End    uint8 // big-endian end bit index [0..63]
+	Amount uint8 // amount to rotate left
 }
 
 // NewRotateParams creates a set of parameters representing a
@@ -39,7 +39,7 @@ type RotateParams struct {
 //
 // The start and end indexes and the rotation amount must all
 // be in the range 0-63 inclusive or this function will panic.
-func NewRotateParams(start, end, amount int8) RotateParams {
+func NewRotateParams(start, end, amount uint8) RotateParams {
 	if start&^63 != 0 {
 		panic("start out of bounds")
 	}
@@ -58,7 +58,7 @@ func NewRotateParams(start, end, amount int8) RotateParams {
 
 // RotateLeft generates a new set of parameters with the rotation amount
 // increased by the given value. The selected bits are left unchanged.
-func (r RotateParams) RotateLeft(amount int8) RotateParams {
+func (r RotateParams) RotateLeft(amount uint8) RotateParams {
 	r.Amount += amount
 	r.Amount &= 63
 	return r
@@ -100,8 +100,8 @@ func (r RotateParams) OutMerge(mask uint64) *RotateParams {
 	}
 
 	// update start and end positions (rotation amount remains the same)
-	r.Start = int8(o+z) & 63
-	r.End = (r.Start + int8(l) - 1) & 63
+	r.Start = uint8(o+z) & 63
+	r.End = (r.Start + uint8(l) - 1) & 63
 	return &r
 }
 
@@ -113,3 +113,5 @@ func (r RotateParams) OutMerge(mask uint64) *RotateParams {
 func (r RotateParams) InMerge(mask uint64) *RotateParams {
 	return r.OutMerge(bits.RotateLeft64(mask, int(r.Amount)))
 }
+
+func (RotateParams) CanBeAnSSAAux() {}
diff --git a/src/cmd/internal/obj/s390x/rotate_test.go b/src/cmd/internal/obj/s390x/rotate_test.go
index fa5b5bdecd..88421b1b83 100644
--- a/src/cmd/internal/obj/s390x/rotate_test.go
+++ b/src/cmd/internal/obj/s390x/rotate_test.go
@@ -10,7 +10,7 @@ import (
 
 func TestRotateParamsMask(t *testing.T) {
 	tests := []struct {
-		start, end, amount int8
+		start, end, amount uint8
 		inMask, outMask    uint64
 	}{
 		// start before end, no rotation
diff --git a/src/cmd/internal/obj/textflag.go b/src/cmd/internal/obj/textflag.go
index d2cec734b1..2f55793285 100644
--- a/src/cmd/internal/obj/textflag.go
+++ b/src/cmd/internal/obj/textflag.go
@@ -33,7 +33,7 @@ const (
 	// This function uses its incoming context register.
 	NEEDCTXT = 64
 
-	// When passed to ggloblsym, causes Local to be set to true on the LSym it creates.
+	// When passed to objw.Global, causes Local to be set to true on the LSym it creates.
 	LOCAL = 128
 
 	// Allocate a word of thread local storage and store the offset from the
@@ -51,4 +51,7 @@ const (
 	// Function is the top of the call stack. Call stack unwinders should stop
 	// at this function.
 	TOPFRAME = 2048
+
+	// Function is an ABI wrapper.
+	ABIWRAPPER = 4096
 )
diff --git a/src/cmd/internal/obj/util.go b/src/cmd/internal/obj/util.go
index b9bacb7a22..1c34b4e833 100644
--- a/src/cmd/internal/obj/util.go
+++ b/src/cmd/internal/obj/util.go
@@ -187,7 +187,7 @@ func (p *Prog) WriteInstructionString(w io.Writer) {
 		// In short, print one of these two:
 		// TEXT	foo(SB), DUPOK|NOSPLIT, $0
 		// TEXT	foo(SB), $0
-		s := p.From.Sym.Attribute.TextAttrString()
+		s := p.From.Sym.TextAttrString()
 		if s != "" {
 			fmt.Fprintf(w, "%s%s", sep, s)
 			sep = ", "
diff --git a/src/cmd/internal/obj/x86/a.out.go b/src/cmd/internal/obj/x86/a.out.go
index 30c1a6a445..3be4b59da4 100644
--- a/src/cmd/internal/obj/x86/a.out.go
+++ b/src/cmd/internal/obj/x86/a.out.go
@@ -263,6 +263,7 @@ const (
 	FREGRET  = REG_X0
 	REGSP    = REG_SP
 	REGCTXT  = REG_DX
+	REGG     = REG_R14     // g register in ABIInternal
 	REGEXT   = REG_R15     // compiler allocates external registers R15 down
 	FREGMIN  = REG_X0 + 5  // first register variable
 	FREGEXT  = REG_X0 + 15 // first external register
diff --git a/src/cmd/internal/obj/x86/obj6.go b/src/cmd/internal/obj/x86/obj6.go
index 184fb4308b..bc3a3b4bbe 100644
--- a/src/cmd/internal/obj/x86/obj6.go
+++ b/src/cmd/internal/obj/x86/obj6.go
@@ -35,6 +35,7 @@ import (
 	"cmd/internal/objabi"
 	"cmd/internal/src"
 	"cmd/internal/sys"
+	"log"
 	"math"
 	"strings"
 )
@@ -637,13 +638,19 @@ func preprocess(ctxt *obj.Link, cursym *obj.LSym, newprog obj.ProgAlloc) {
 		}
 	}
 
-	if !p.From.Sym.NoSplit() || p.From.Sym.Wrapper() {
-		p = obj.Appendp(p, newprog)
-		p = load_g_cx(ctxt, p, newprog) // load g into CX
+	var regg int16
+	if !p.From.Sym.NoSplit() || (p.From.Sym.Wrapper() && !p.From.Sym.ABIWrapper()) {
+		if ctxt.Arch.Family == sys.AMD64 && objabi.Regabi_enabled != 0 && cursym.ABI() == obj.ABIInternal {
+			regg = REGG // use the g register directly in ABIInternal
+		} else {
+			p = obj.Appendp(p, newprog)
+			p = load_g_cx(ctxt, p, newprog) // load g into CX
+			regg = REG_CX
+		}
 	}
 
 	if !cursym.Func().Text.From.Sym.NoSplit() {
-		p = stacksplit(ctxt, cursym, p, newprog, autoffset, int32(textarg)) // emit split check
+		p = stacksplit(ctxt, cursym, p, newprog, autoffset, int32(textarg), regg) // emit split check
 	}
 
 	// Delve debugger would like the next instruction to be noted as the end of the function prologue.
@@ -690,12 +697,12 @@ func preprocess(ctxt *obj.Link, cursym *obj.LSym, newprog obj.ProgAlloc) {
 		p.To.Reg = REG_BP
 	}
 
-	if cursym.Func().Text.From.Sym.Wrapper() {
+	if cursym.Func().Text.From.Sym.Wrapper() && !cursym.Func().Text.From.Sym.ABIWrapper() {
 		// if g._panic != nil && g._panic.argp == FP {
 		//   g._panic.argp = bottom-of-frame
 		// }
 		//
-		//	MOVQ g_panic(CX), BX
+		//	MOVQ g_panic(g), BX
 		//	TESTQ BX, BX
 		//	JNE checkargp
 		// end:
@@ -718,7 +725,7 @@ func preprocess(ctxt *obj.Link, cursym *obj.LSym, newprog obj.ProgAlloc) {
 		p = obj.Appendp(p, newprog)
 		p.As = AMOVQ
 		p.From.Type = obj.TYPE_MEM
-		p.From.Reg = REG_CX
+		p.From.Reg = regg
 		p.From.Offset = 4 * int64(ctxt.Arch.PtrSize) // g_panic
 		p.To.Type = obj.TYPE_REG
 		p.To.Reg = REG_BX
@@ -833,6 +840,20 @@ func preprocess(ctxt *obj.Link, cursym *obj.LSym, newprog obj.ProgAlloc) {
 
 		switch p.As {
 		default:
+			if p.To.Type == obj.TYPE_REG && p.To.Reg == REG_SP && p.As != ACMPL && p.As != ACMPQ {
+				f := cursym.Func()
+				if f.FuncFlag&objabi.FuncFlag_SPWRITE == 0 {
+					f.FuncFlag |= objabi.FuncFlag_SPWRITE
+					if ctxt.Debugvlog || !ctxt.IsAsm {
+						ctxt.Logf("auto-SPWRITE: %s %v\n", cursym.Name, p)
+						if !ctxt.IsAsm {
+							ctxt.Diag("invalid auto-SPWRITE in non-assembly")
+							ctxt.DiagFlush()
+							log.Fatalf("bad SPWRITE")
+						}
+					}
+				}
+			}
 			continue
 
 		case APUSHL, APUSHFL:
@@ -969,9 +990,9 @@ func load_g_cx(ctxt *obj.Link, p *obj.Prog, newprog obj.ProgAlloc) *obj.Prog {
 
 // Append code to p to check for stack split.
 // Appends to (does not overwrite) p.
-// Assumes g is in CX.
+// Assumes g is in rg.
 // Returns last new instruction.
-func stacksplit(ctxt *obj.Link, cursym *obj.LSym, p *obj.Prog, newprog obj.ProgAlloc, framesize int32, textarg int32) *obj.Prog {
+func stacksplit(ctxt *obj.Link, cursym *obj.LSym, p *obj.Prog, newprog obj.ProgAlloc, framesize int32, textarg int32, rg int16) *obj.Prog {
 	cmp := ACMPQ
 	lea := ALEAQ
 	mov := AMOVQ
@@ -993,7 +1014,8 @@ func stacksplit(ctxt *obj.Link, cursym *obj.LSym, p *obj.Prog, newprog obj.ProgA
 		p.As = cmp
 		p.From.Type = obj.TYPE_REG
 		p.From.Reg = REG_SP
-		indir_cx(ctxt, &p.To)
+		p.To.Type = obj.TYPE_MEM
+		p.To.Reg = rg
 		p.To.Offset = 2 * int64(ctxt.Arch.PtrSize) // G.stackguard0
 		if cursym.CFunc() {
 			p.To.Offset = 3 * int64(ctxt.Arch.PtrSize) // G.stackguard1
@@ -1021,7 +1043,8 @@ func stacksplit(ctxt *obj.Link, cursym *obj.LSym, p *obj.Prog, newprog obj.ProgA
 		p.As = cmp
 		p.From.Type = obj.TYPE_REG
 		p.From.Reg = REG_AX
-		indir_cx(ctxt, &p.To)
+		p.To.Type = obj.TYPE_MEM
+		p.To.Reg = rg
 		p.To.Offset = 2 * int64(ctxt.Arch.PtrSize) // G.stackguard0
 		if cursym.CFunc() {
 			p.To.Offset = 3 * int64(ctxt.Arch.PtrSize) // G.stackguard1
@@ -1047,7 +1070,8 @@ func stacksplit(ctxt *obj.Link, cursym *obj.LSym, p *obj.Prog, newprog obj.ProgA
 		p = obj.Appendp(p, newprog)
 
 		p.As = mov
-		indir_cx(ctxt, &p.From)
+		p.From.Type = obj.TYPE_MEM
+		p.From.Reg = rg
 		p.From.Offset = 2 * int64(ctxt.Arch.PtrSize) // G.stackguard0
 		if cursym.CFunc() {
 			p.From.Offset = 3 * int64(ctxt.Arch.PtrSize) // G.stackguard1
@@ -1114,7 +1138,8 @@ func stacksplit(ctxt *obj.Link, cursym *obj.LSym, p *obj.Prog, newprog obj.ProgA
 	spfix.Spadj = -framesize
 
 	pcdata := ctxt.EmitEntryStackMap(cursym, spfix, newprog)
-	pcdata = ctxt.StartUnsafePoint(pcdata, newprog)
+	spill := ctxt.StartUnsafePoint(pcdata, newprog)
+	pcdata = ctxt.SpillRegisterArgs(spill, newprog)
 
 	call := obj.Appendp(pcdata, newprog)
 	call.Pos = cursym.Func().Text.Pos
@@ -1139,7 +1164,8 @@ func stacksplit(ctxt *obj.Link, cursym *obj.LSym, p *obj.Prog, newprog obj.ProgA
 		progedit(ctxt, callend.Link, newprog)
 	}
 
-	pcdata = ctxt.EndUnsafePoint(callend, newprog, -1)
+	pcdata = ctxt.UnspillRegisterArgs(callend, newprog)
+	pcdata = ctxt.EndUnsafePoint(pcdata, newprog, -1)
 
 	jmp := obj.Appendp(pcdata, newprog)
 	jmp.As = obj.AJMP
@@ -1147,9 +1173,9 @@ func stacksplit(ctxt *obj.Link, cursym *obj.LSym, p *obj.Prog, newprog obj.ProgA
 	jmp.To.SetTarget(cursym.Func().Text.Link)
 	jmp.Spadj = +framesize
 
-	jls.To.SetTarget(call)
+	jls.To.SetTarget(spill)
 	if q1 != nil {
-		q1.To.SetTarget(call)
+		q1.To.SetTarget(spill)
 	}
 
 	return end
diff --git a/src/cmd/internal/objabi/funcid.go b/src/cmd/internal/objabi/funcid.go
index 1d098ee172..6e188e31bb 100644
--- a/src/cmd/internal/objabi/funcid.go
+++ b/src/cmd/internal/objabi/funcid.go
@@ -4,97 +4,89 @@
 
 package objabi
 
+import "strings"
+
+// A FuncFlag records bits about a function, passed to the runtime.
+type FuncFlag uint8
+
+// Note: This list must match the list in runtime/symtab.go.
+const (
+	FuncFlag_TOPFRAME = 1 << iota
+	FuncFlag_SPWRITE
+)
+
 // A FuncID identifies particular functions that need to be treated
 // specially by the runtime.
 // Note that in some situations involving plugins, there may be multiple
 // copies of a particular special runtime function.
-// Note: this list must match the list in runtime/symtab.go.
 type FuncID uint8
 
+// Note: this list must match the list in runtime/symtab.go.
 const (
 	FuncID_normal FuncID = iota // not a special function
-	FuncID_runtime_main
+	FuncID_asmcgocall
+	FuncID_asyncPreempt
+	FuncID_cgocallback
+	FuncID_debugCallV1
+	FuncID_externalthreadhandler
+	FuncID_gcBgMarkWorker
 	FuncID_goexit
+	FuncID_gogo
+	FuncID_gopanic
+	FuncID_handleAsyncEvent
 	FuncID_jmpdefer
 	FuncID_mcall
 	FuncID_morestack
 	FuncID_mstart
+	FuncID_panicwrap
 	FuncID_rt0_go
-	FuncID_asmcgocall
-	FuncID_sigpanic
 	FuncID_runfinq
-	FuncID_gcBgMarkWorker
-	FuncID_systemstack_switch
+	FuncID_runtime_main
+	FuncID_sigpanic
 	FuncID_systemstack
-	FuncID_cgocallback
-	FuncID_gogo
-	FuncID_externalthreadhandler
-	FuncID_debugCallV1
-	FuncID_gopanic
-	FuncID_panicwrap
-	FuncID_handleAsyncEvent
-	FuncID_asyncPreempt
+	FuncID_systemstack_switch
 	FuncID_wrapper // any autogenerated code (hash/eq algorithms, method wrappers, etc.)
 )
 
+var funcIDs = map[string]FuncID{
+	"asmcgocall":            FuncID_asmcgocall,
+	"asyncPreempt":          FuncID_asyncPreempt,
+	"cgocallback":           FuncID_cgocallback,
+	"debugCallV1":           FuncID_debugCallV1,
+	"externalthreadhandler": FuncID_externalthreadhandler,
+	"gcBgMarkWorker":        FuncID_gcBgMarkWorker,
+	"go":                    FuncID_rt0_go,
+	"goexit":                FuncID_goexit,
+	"gogo":                  FuncID_gogo,
+	"gopanic":               FuncID_gopanic,
+	"handleAsyncEvent":      FuncID_handleAsyncEvent,
+	"jmpdefer":              FuncID_jmpdefer,
+	"main":                  FuncID_runtime_main,
+	"mcall":                 FuncID_mcall,
+	"morestack":             FuncID_morestack,
+	"mstart":                FuncID_mstart,
+	"panicwrap":             FuncID_panicwrap,
+	"runfinq":               FuncID_runfinq,
+	"sigpanic":              FuncID_sigpanic,
+	"switch":                FuncID_systemstack_switch,
+	"systemstack":           FuncID_systemstack,
+
+	// Don't show in call stack but otherwise not special.
+	"deferreturn":       FuncID_wrapper,
+	"runOpenDeferFrame": FuncID_wrapper,
+	"reflectcallSave":   FuncID_wrapper,
+}
+
 // Get the function ID for the named function in the named file.
 // The function should be package-qualified.
 func GetFuncID(name string, isWrapper bool) FuncID {
 	if isWrapper {
 		return FuncID_wrapper
 	}
-	switch name {
-	case "runtime.main":
-		return FuncID_runtime_main
-	case "runtime.goexit":
-		return FuncID_goexit
-	case "runtime.jmpdefer":
-		return FuncID_jmpdefer
-	case "runtime.mcall":
-		return FuncID_mcall
-	case "runtime.morestack":
-		return FuncID_morestack
-	case "runtime.mstart":
-		return FuncID_mstart
-	case "runtime.rt0_go":
-		return FuncID_rt0_go
-	case "runtime.asmcgocall":
-		return FuncID_asmcgocall
-	case "runtime.sigpanic":
-		return FuncID_sigpanic
-	case "runtime.runfinq":
-		return FuncID_runfinq
-	case "runtime.gcBgMarkWorker":
-		return FuncID_gcBgMarkWorker
-	case "runtime.systemstack_switch":
-		return FuncID_systemstack_switch
-	case "runtime.systemstack":
-		return FuncID_systemstack
-	case "runtime.cgocallback":
-		return FuncID_cgocallback
-	case "runtime.gogo":
-		return FuncID_gogo
-	case "runtime.externalthreadhandler":
-		return FuncID_externalthreadhandler
-	case "runtime.debugCallV1":
-		return FuncID_debugCallV1
-	case "runtime.gopanic":
-		return FuncID_gopanic
-	case "runtime.panicwrap":
-		return FuncID_panicwrap
-	case "runtime.handleAsyncEvent":
-		return FuncID_handleAsyncEvent
-	case "runtime.asyncPreempt":
-		return FuncID_asyncPreempt
-	case "runtime.deferreturn":
-		// Don't show in the call stack (used when invoking defer functions)
-		return FuncID_wrapper
-	case "runtime.runOpenDeferFrame":
-		// Don't show in the call stack (used when invoking defer functions)
-		return FuncID_wrapper
-	case "runtime.reflectcallSave":
-		// Don't show in the call stack (used when invoking defer functions)
-		return FuncID_wrapper
+	if strings.HasPrefix(name, "runtime.") {
+		if id, ok := funcIDs[name[len("runtime."):]]; ok {
+			return id
+		}
 	}
 	return FuncID_normal
 }
diff --git a/src/cmd/internal/objabi/path.go b/src/cmd/internal/objabi/path.go
index fd1c9981c6..1a0784cf7f 100644
--- a/src/cmd/internal/objabi/path.go
+++ b/src/cmd/internal/objabi/path.go
@@ -56,6 +56,8 @@ func IsRuntimePackagePath(pkgpath string) bool {
 		rval = true
 	case "syscall":
 		rval = true
+	case "crypto/x509/internal/macos": // libc function wrappers need to be ABIInternal
+		rval = true
 	default:
 		rval = strings.HasPrefix(pkgpath, "runtime/internal")
 	}
diff --git a/src/cmd/internal/objabi/util.go b/src/cmd/internal/objabi/util.go
index a73ab479a1..1f99f8ed5d 100644
--- a/src/cmd/internal/objabi/util.go
+++ b/src/cmd/internal/objabi/util.go
@@ -137,7 +137,7 @@ func init() {
 }
 
 // Note: must agree with runtime.framepointer_enabled.
-var Framepointer_enabled = GOARCH == "amd64" || GOARCH == "arm64" && (GOOS == "linux" || GOOS == "darwin" || GOOS == "ios")
+var Framepointer_enabled = GOARCH == "amd64" || GOARCH == "arm64"
 
 func addexp(s string) {
 	// Could do general integer parsing here, but the runtime copy doesn't yet.
diff --git a/src/cmd/internal/objfile/pe.go b/src/cmd/internal/objfile/pe.go
index b20cda9a44..9088866fcf 100644
--- a/src/cmd/internal/objfile/pe.go
+++ b/src/cmd/internal/objfile/pe.go
@@ -189,6 +189,8 @@ func (f *peFile) goarch() string {
 		return "amd64"
 	case pe.IMAGE_FILE_MACHINE_ARMNT:
 		return "arm"
+	case pe.IMAGE_FILE_MACHINE_ARM64:
+		return "arm64"
 	default:
 		return ""
 	}
diff --git a/src/cmd/internal/objfile/xcoff.go b/src/cmd/internal/objfile/xcoff.go
index d438c80226..d6df4db8f0 100644
--- a/src/cmd/internal/objfile/xcoff.go
+++ b/src/cmd/internal/objfile/xcoff.go
@@ -94,9 +94,7 @@ func (f *xcoffFile) pcln() (textStart uint64, symtab, pclntab []byte, err error)
 	if pclntab, err = loadXCOFFTable(f.xcoff, "runtime.pclntab", "runtime.epclntab"); err != nil {
 		return 0, nil, nil, err
 	}
-	if symtab, err = loadXCOFFTable(f.xcoff, "runtime.symtab", "runtime.esymtab"); err != nil {
-		return 0, nil, nil, err
-	}
+	symtab, _ = loadXCOFFTable(f.xcoff, "runtime.symtab", "runtime.esymtab") // ignore error, this symbol is not useful anyway
 	return textStart, symtab, pclntab, nil
 }
 
diff --git a/src/cmd/internal/pkgpath/pkgpath.go b/src/cmd/internal/pkgpath/pkgpath.go
index 40a040a81a..72e3bdb631 100644
--- a/src/cmd/internal/pkgpath/pkgpath.go
+++ b/src/cmd/internal/pkgpath/pkgpath.go
@@ -10,9 +10,9 @@ import (
 	"bytes"
 	"errors"
 	"fmt"
+	exec "internal/execabs"
 	"io/ioutil"
 	"os"
-	"os/exec"
 	"strings"
 )