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path: root/src/cmd/compile/internal/ssa/regalloc.go
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27 hoursall: prealloc slice with possible minimum capabilitiesShulhan
2026-02-23cmd/compile: fix a typo in startRegs drop conditionAlexander Musman
Fix startRegs drop condition: it used `== 1` instead of `!= 0`, causing the startRegs optimization to only work for register R0. This left unnecessary register bits in startRegs, resulting in extra shuffle-generated OpLoadReg operations on merge edges. The practical effect is minor (a few less reloads in some functions); the fix is mostly to make the code behave as intended. Change-Id: I28279f51e3cafce4cfca0070633e22b9cc27a11b Reviewed-on: https://go-review.googlesource.com/c/go/+/745740 Reviewed-by: Keith Randall <khr@golang.org> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Auto-Submit: Keith Randall <khr@golang.org> Reviewed-by: David Chase <drchase@google.com> Reviewed-by: Keith Randall <khr@google.com>
2026-02-15cmd/compile: don't drop same register twicekhr@golang.org
For instructions that clobber both of their input registers, make sure we don't clobber the same register twice when both input registers are the same. This is rare, but it can happen. Fixes #77604 Change-Id: I794249cf43a8cc4ab3262055daef9193e2442f73 Reviewed-on: https://go-review.googlesource.com/c/go/+/745621 Reviewed-by: Keith Randall <khr@google.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Jorropo <jorropo.pgm@gmail.com> Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
2026-02-10cmd/compile: move likely used values into registers before entering loopKeith Randall
When we are about to enter a loop, we try to put values that will be used soon into registers, so we put them into registers once outside the loop instead of N times inside the loop. But we currently don't kick out values we won't use for a while to make room. This CL does that. So even if register pressure is large around the loop, we can still use registers for all the in-loop values. The values generating the register pressure, but not used inside the loop, will get spilled around the loop. This is particularly useful for Phi arguments. We want to promote from fixed zero registers or other rematerializeable values to a general register before the loop starts. Fixes #77299 Change-Id: I00efc3d3014163aaf377693830c7d7957eaa515f Reviewed-on: https://go-review.googlesource.com/c/go/+/743640 LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Keith Randall <khr@google.com> Reviewed-by: Junyang Shao <shaojunyang@google.com>
2025-11-26cmd/compile,internal/bytealg: add MemEq intrinsic for runtime.memequalAlexander Musman
Introduce a new MemEq SSA operation for runtime.memequal. The operation is initially implemented for arm64. The change adds opt rules (following existing rules for call to runtime.memequal), working with MemEq, and a later op version LoweredMemEq which may be lowered differently for more constant size cases in future (for other targets as well as for arm64). The new MemEq SSA operation does not have memory result, allowing cse of loads operations around it. Code size difference (for arm64 linux): Executable Old .text New .text Change ------------------------------------------------------- asm 1970420 1969668 -0.04% cgo 1741220 1740212 -0.06% compile 8956756 8959428 +0.03% cover 1879332 1878772 -0.03% link 2574116 2572660 -0.06% preprofile 867124 866820 -0.04% vet 2890404 2888596 -0.06% Change-Id: I6ab507929b861884d17d5818cfbd152cf7879751 Reviewed-on: https://go-review.googlesource.com/c/go/+/686655 Reviewed-by: Keith Randall <khr@google.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Cherry Mui <cherryyz@google.com> Auto-Submit: Keith Randall <khr@golang.org> Reviewed-by: Keith Randall <khr@golang.org>
2025-11-20[dev.simd] all: merge master (ca37d24) into dev.simdCherry Mui
Conflicts: - src/cmd/compile/internal/typecheck/builtin.go Merge List: + 2025-11-20 ca37d24e0b net/http: drop unused "broken" field from persistConn + 2025-11-20 4b740af56a cmd/internal/obj/x86: handle global reference in From3 in dynlink mode + 2025-11-20 790384c6c2 spec: adjust rule for type parameter on RHS of alias declaration + 2025-11-20 a49b0302d0 net/http: correctly close fake net.Conns + 2025-11-20 32f5aadd2f cmd/compile: stack allocate backing stores during append + 2025-11-20 a18aff8057 runtime: select GC mark workers during start-the-world + 2025-11-20 829779f4fe runtime: split findRunnableGCWorker in two + 2025-11-20 ab59569099 go/version: use "custom" as an example of a version suffix + 2025-11-19 c4bb9653ba cmd/compile: Implement LoweredZeroLoop with LSX Instruction on loong64 + 2025-11-19 7f2ae21fb4 cmd/internal/obj/loong64: add MULW.D.W[U] instructions + 2025-11-19 a2946f2385 crypto: add Encapsulator and Decapsulator interfaces + 2025-11-19 6b83bd7146 crypto/ecdh: add KeyExchanger interface + 2025-11-19 4fef9f8b55 go/types, types2: fix object path for grouped declaration statements + 2025-11-19 33529db142 spec: escape double-ampersands + 2025-11-19 dc42565a20 cmd/compile: fix control flow for unsigned divisions proof relations + 2025-11-19 e64023dcbf cmd/compile: cleanup useless if statement in prove + 2025-11-19 2239520d1c test: go fmt prove.go tests + 2025-11-19 489d3dafb7 math: switch s390x math.Pow to generic implementation + 2025-11-18 8c41a482f9 runtime: add dlog.hexdump + 2025-11-18 e912618bd2 runtime: add hexdumper + 2025-11-18 2cf9d4b62f Revert "net/http: do not discard body content when closing it within request handlers" + 2025-11-18 4d0658bb08 cmd/compile: prefer fixed registers for values + 2025-11-18 ba634ca5c7 cmd/compile: fold boolean NOT into branches + 2025-11-18 8806d53c10 cmd/link: align sections, not symbols after DWARF compress + 2025-11-18 c93766007d runtime: do not print recovered when double panic with the same value + 2025-11-18 9859b43643 cmd/asm,cmd/compile,cmd/internal/obj/riscv: use compressed instructions on riscv64 + 2025-11-17 b9ef0633f6 cmd/internal/sys,internal/goarch,runtime: enable the use of compressed instructions on riscv64 + 2025-11-17 a087dea869 debug/elf: sync new loong64 relocation types up to LoongArch ELF psABI v20250521 + 2025-11-17 e1a12c781f cmd/compile: use 32x32->64 multiplies on arm64 + 2025-11-17 6caab99026 runtime: relax TestMemoryLimit on darwin a bit more + 2025-11-17 eda2e8c683 runtime: clear frame pointer at thread entry points + 2025-11-17 6919858338 runtime: rename findrunnable references to findRunnable + 2025-11-17 8e734ec954 go/ast: fix BasicLit.End position for raw strings containing \r + 2025-11-17 592775ec7d crypto/mlkem: avoid a few unnecessary inverse NTT calls + 2025-11-17 590cf18daf crypto/mlkem/mlkemtest: add derandomized Encapsulate768/1024 + 2025-11-17 c12c337099 cmd/compile: teach prove about subtract idioms + 2025-11-17 bc15963813 cmd/compile: clean up prove pass + 2025-11-17 1297fae708 go/token: add (*File).End method + 2025-11-17 65c09eafdf runtime: hoist invariant code out of heapBitsSmallForAddrInline + 2025-11-17 594129b80c internal/runtime/maps: update doc for table.Clear + 2025-11-15 c58d075e9a crypto/rsa: deprecate PKCS#1 v1.5 encryption + 2025-11-14 d55ecea9e5 runtime: usleep before stealing runnext only if not in syscall + 2025-11-14 410ef44f00 cmd: update x/tools to 59ff18c + 2025-11-14 50128a2154 runtime: support runtime.freegc in size-specialized mallocs for noscan objects + 2025-11-14 c3708350a4 cmd/go: tests: rename git-min-vers->git-sha256 + 2025-11-14 aea881230d std: fix printf("%q", int) mistakes + 2025-11-14 120f1874ef runtime: add more precise test of assist credit handling for runtime.freegc + 2025-11-14 fecfcaa4f6 runtime: add runtime.freegc to reduce GC work + 2025-11-14 5a347b775e runtime: set GOEXPERIMENT=runtimefreegc to disabled by default + 2025-11-14 1a03d0db3f runtime: skip tests for GOEXPERIMENT=arenas that do not handle clobberfree=1 + 2025-11-14 cb0d9980f5 net/http: do not discard body content when closing it within request handlers + 2025-11-14 03ed43988f cmd/compile: allow multi-field structs to be stored directly in interfaces + 2025-11-14 1bb1f2bf0c runtime: put AddCleanup cleanup arguments in their own allocation + 2025-11-14 9fd2e44439 runtime: add AddCleanup benchmark + 2025-11-14 80c91eedbb runtime: ensure weak handles end up in their own allocation + 2025-11-14 7a8d0b5d53 runtime: add debug mode to extend _Grunning-without-P windows + 2025-11-14 710abf74da internal/runtime/cgobench: add Go function call benchmark for comparison + 2025-11-14 b24aec598b doc, cmd/internal/obj/riscv: document the riscv64 assembler + 2025-11-14 a0e738c657 cmd/compile/internal: remove incorrect riscv64 SLTI rule + 2025-11-14 2cdcc4150b cmd/compile: fold negation into multiplication + 2025-11-14 b57962b7c7 bytes: fix panic in bytes.Buffer.Peek + 2025-11-14 0a569528ea cmd/compile: optimize comparisons with single bit difference + 2025-11-14 1e5e6663e9 cmd/compile: remove unnecessary casts and types from riscv64 rules + 2025-11-14 ddd8558e61 go/types, types2: swap object.color for Checker.objPathIdx + 2025-11-14 9daaab305c cmd/link/internal/ld: make runtime.buildVersion with experiments valid + 2025-11-13 d50a571ddf test: fix tests to work with sizespecializedmalloc turned off + 2025-11-13 704f841eab cmd/trace: annotation proc start/stop with thread and proc always + 2025-11-13 17a02b9106 net/http: remove unused isLitOrSingle and isNotToken + 2025-11-13 ff61991aed cmd/go: fix flaky TestScript/mod_get_direct + 2025-11-13 129d0cb543 net/http/cgi: accept INCLUDED as protocol for server side includes + 2025-11-13 77c5130100 go/types: minor simplification + 2025-11-13 7601cd3880 go/types: generate cycles.go + 2025-11-13 7a372affd9 go/types, types2: rename definedType to declaredType and clarify docs Change-Id: Ibaa9bdb982364892f80e511c1bb12661fcd5fb86
2025-11-18cmd/compile: prefer fixed registers for valuesKeith Randall
For this code: func f() (int, int) { return 0, 0 } We currently generate on arm64: MOVD ZR, R0 MOVD R0, R1 This CL changes that to MOVD ZR, R0 MOVD ZR, R1 Probably not a big performance difference, but it makes the generated code clearer. A followup-ish CL from 633075 when the zero fixed register was exposed to the register allocator. Change-Id: I869a92817dcbbca46c900999fab538e76e10ed05 Reviewed-on: https://go-review.googlesource.com/c/go/+/721440 Reviewed-by: Keith Randall <khr@google.com> Reviewed-by: Junyang Shao <shaojunyang@google.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2025-11-13[dev.simd] all: merge master (57362e9) into dev.simdCherry Mui
Conflicts: - src/cmd/compile/internal/ir/symtab.go - src/cmd/compile/internal/ssa/prove.go - src/cmd/compile/internal/ssa/rewriteAMD64.go - src/cmd/compile/internal/ssagen/intrinsics.go - src/cmd/compile/internal/typecheck/builtin.go - src/internal/buildcfg/exp.go - src/internal/strconv/ftoa.go - test/codegen/stack.go Manually resolved some conflicts: - Use internal/strconv for simd.String, remove internal/ftoa - prove.go is just copied from the one on the main branch. We have cherry-picked the changes to prove.go to main branch, so our copy is identical to an old version of the one on the main branch. There are CLs landed after our cherry-picks. Just copy it over to adopt the new code. Merge List: + 2025-11-13 57362e9814 go/types, types2: check for direct cycles as a separate phase + 2025-11-13 099e0027bd cmd/go/internal/modfetch: consolidate global vars + 2025-11-13 028375323f cmd/go/internal/modfetch/codehost: fix flaky TestReadZip + 2025-11-13 4ebf295b0b runtime: prefer to restart Ps on the same M after STW + 2025-11-13 625d8e9b9c runtime/pprof: fix goroutine leak profile tests for noopt + 2025-11-13 4684a26c26 spec: remove cycle restriction for type parameters + 2025-11-13 0f9c8fb29d cmd/asm,cmd/internal/obj/riscv: add support for riscv compressed instructions + 2025-11-13 a15d036ce2 cmd/internal/obj/riscv: implement better bit pattern encoding + 2025-11-12 abb241a789 cmd/internal/obj/loong64: add {,X}VS{ADD,SUB}.{B/H/W/V}{,U} instructions support + 2025-11-12 0929d21978 cmd/go: keep objects alive while stopping cleanups + 2025-11-12 f03d06ec1a runtime: fix list test memory management for mayMoreStack + 2025-11-12 48127f656b crypto/internal/fips140/sha3: remove outdated TODO + 2025-11-12 c3d1d42764 sync/atomic: amend comments for Value.{Swap,CompareAndSwap} + 2025-11-12 e0807ba470 cmd/compile: don't clear ptrmask in fillptrmask + 2025-11-12 66318d2b4b internal/abi: correctly describe result in Name.Name doc comment + 2025-11-12 34aef89366 cmd/compile: use FCLASSD for subnormal checks on riscv64 + 2025-11-12 0c28789bd7 net/url: disallow raw IPv6 addresses in host + 2025-11-12 4e761b9a18 cmd/compile: optimize liveness in stackalloc + 2025-11-12 956909ff84 crypto/x509: move BetterTLS suite from crypto/tls + 2025-11-12 6525f46707 cmd/link: change shdr and phdr from arrays to slices + 2025-11-12 d3aeba1670 runtime: switch p.gcFractionalMarkTime to atomic.Int64 + 2025-11-12 8873e8bea2 runtime,runtime/pprof: clean up goroutine leak profile writing + 2025-11-12 b8b84b789e cmd/go: clarify the -o testflag is only for copying the binary + 2025-11-12 c761b26b56 mime: parse media types that contain braces + 2025-11-12 65858a146e os/exec: include Cmd.Start in the list of methods that run Cmd + 2025-11-11 4bfc3a9d14 std,cmd: go fix -any std cmd + 2025-11-11 2263d4aabd runtime: doubly-linked sched.midle list + 2025-11-11 046dce0e54 runtime: use new list type for spanSPMCs + 2025-11-11 5f11275457 runtime: reusable intrusive doubly-linked list + 2025-11-11 951cf0501b internal/trace/testtrace: fix flag name typos + 2025-11-11 2750f95291 cmd/go: implement accurate pseudo-versions for Mercurial + 2025-11-11 b709a3e8b4 cmd/go/internal/vcweb: cache hg servers + 2025-11-11 426ef30ecf cmd/go: implement -reuse for Mercurial repos + 2025-11-10 5241d114f5 spec: more precise prose for special case of append + 2025-11-10 cdf64106f6 go/types, types2: first argument to append must never be be nil + 2025-11-10 a0eb4548cf .gitignore: ignore go test artifacts + 2025-11-10 bf58e7845e internal/trace: add "command" to convert text traces to raw + 2025-11-10 052c192a4c runtime: fix lock rank for work.spanSPMCs.lock + 2025-11-10 bc5ffe5c79 internal/runtime/sys,math/bits: eliminate bounds checks on len8tab + 2025-11-10 32f8d6486f runtime: document that tracefpunwindoff applies to some profilers + 2025-11-10 1c1c1942ba cmd/go: remove redundant AVX regex in security flag checks + 2025-11-10 3b3d6b9e5d cmd/internal/obj/arm64: shorten constant integer loads + 2025-11-10 5f4b5f1a19 runtime/msan: use different msan routine for copying + 2025-11-10 0fe6c8e8c8 runtime: tweak wording for comment of mcache.flushGen + 2025-11-10 95a0e5adc1 sync: don't call Done when f() panics in WaitGroup.Go + 2025-11-08 e8ed85d6c2 cmd/go: update goSum if necessary + 2025-11-08 b76103c08e cmd/go: output missing GoDebug entries + 2025-11-07 47a63a331d cmd/go: rewrite hgrepo1 test repo to be deterministic + 2025-11-07 7995751d3a cmd/go: copy git reuse and support repos to hg + 2025-11-07 66c7ca7fb3 cmd/go: improve TestScript/reuse_git + 2025-11-07 de84ac55c6 cmd/link: clean up some comments to Go standards + 2025-11-07 5cd1b73772 runtime: correctly print panics before fatal-ing on defer + 2025-11-07 91ca80f970 runtime/cgo: improve error messages after pointer panic + 2025-11-07 d36e88f21f runtime: tweak wording for doc + 2025-11-06 ad3ccd92e4 cmd/link: move pclntab out of relro section + 2025-11-06 43b91e7abd iter: fix a tiny doc comment bug + 2025-11-06 48c7fa13c6 Revert "runtime: remove the pc field of _defer struct" + 2025-11-05 8111104a21 cmd/internal/obj/loong64: add {,X}VSHUF.{B/H/W/V} instructions support + 2025-11-05 2e2072561c cmd/internal/obj/loong64: add {,X}VEXTRINS.{B,H,W,V} instruction support + 2025-11-05 01c29d1f0b internal/chacha8rand: replace VORV with instruction VMOVQ on loong64 + 2025-11-05 f01a1841fd cmd/compile: fix error message on loong64 + 2025-11-05 8cf7a0b4c9 cmd/link: support weak binding on darwin + 2025-11-05 2dd7e94e16 cmd/go: use go.dev instead of golang.org in flag errors + 2025-11-05 28f1ad5782 cmd/go: fix TestScript/govcs + 2025-11-05 daa220a1c9 cmd/go: silence TLS handshake errors during test + 2025-11-05 3ae9e95002 cmd/go: fix TestCgoPkgConfig on darwin with pkg-config installed + 2025-11-05 a494a26bc2 cmd/go: fix TestScript/vet_flags + 2025-11-05 a8fb94969c cmd/go: fix TestScript/tool_build_as_needed + 2025-11-05 04f05219c4 cmd/cgo: skip escape checks if call site has no argument + 2025-11-04 9f3a108ee0 os: ignore O_TRUNC errors on named pipes and terminal devices on Windows + 2025-11-04 0e1bd8b5f1 cmd/link, runtime: don't store text start in pcHeader + 2025-11-04 7347b54727 cmd/link: don't generate .gosymtab section + 2025-11-04 6914dd11c0 cmd/link: add and use new SymKind SFirstUnallocated + 2025-11-04 f5f14262d0 cmd/link: remove misleading comment + 2025-11-04 61de3a9dae cmd/link: remove unused SFILEPATH symbol kind + 2025-11-04 8e2bd267b5 cmd/link: add comments for SymKind values + 2025-11-04 16705b962e cmd/compile: faster liveness analysis in regalloc + 2025-11-04 a5fe6791d7 internal/syscall/windows: fix ReOpenFile sentinel error value + 2025-11-04 a7d174ccaa cmd/compile/internal/ssa: simplify riscv64 FCLASSD rewrite rules + 2025-11-04 856238615d runtime: amend doc for setPinned + 2025-11-04 c7ccbddf22 cmd/compile/internal/ssa: more aggressive on dead auto elim + 2025-11-04 75b2bb1d1a cmd/cgo: drop pre-1.18 support + 2025-11-04 dd839f1d00 internal/strconv: handle %f with fixedFtoa when possible + 2025-11-04 6e165b4d17 cmd/compile: implement Avg64u, Hmul64, Hmul64u for wasm + 2025-11-04 9f6590f333 encoding/pem: don't reslice in failure modes + 2025-11-03 34fec512ce internal/strconv: extract fixed-precision ftoa from ftoaryu.go + 2025-11-03 162ba6cc40 internal/strconv: add tests and benchmarks for ftoaFixed + 2025-11-03 9795c7ba22 internal/strconv: fix pow10 off-by-one in exponent result + 2025-11-03 ad5e941a45 cmd/internal/obj/loong64: using {xv,v}slli.d to perform copying between vector registers + 2025-11-03 dadbac0c9e cmd/internal/obj/loong64: add VPERMI.W, XVPERMI.{W,V,Q} instruction support + 2025-11-03 e2c6a2024c runtime: avoid append in printint, printuint + 2025-11-03 c93cc603cd runtime: allow Stack to traceback goroutines in syscall _Grunning window + 2025-11-03 b5353fd90a runtime: don't panic in castogscanstatus + 2025-11-03 43491f8d52 cmd/cgo: use the export'ed file/line in error messages + 2025-11-03 aa94fdf0cc cmd/go: link to go.dev/doc/godebug for removed GODEBUG settings + 2025-11-03 4d2b03d2fc crypto/tls: add BetterTLS test coverage + 2025-11-03 0c4444e13d cmd/internal/obj: support arm64 FMOVQ large offset encoding + 2025-11-03 85bec791a0 cmd/go/testdata/script: loosen list_empty_importpath for freebsd + 2025-11-03 17b57078ab internal/runtime/cgobench: add cgo callback benchmark + 2025-11-03 5f8fdb720c cmd/go: move functions to methods + 2025-11-03 0a95856b95 cmd/go: eliminate additional global variable + 2025-11-03 f93186fb44 cmd/go/internal/telemetrystats: count cgo usage + 2025-11-03 eaf28a27fd runtime: update outdated comments for deferprocStack + 2025-11-03 e12d8a90bf all: remove extra space in the comments + 2025-11-03 c5559344ac internal/profile: optimize Parse allocs + 2025-11-03 5132158ac2 bytes: add Buffer.Peek + 2025-11-03 361d51a6b5 runtime: remove the pc field of _defer struct + 2025-11-03 00ee1860ce crypto/internal/constanttime: expose intrinsics to the FIPS 140-3 packages + 2025-11-02 388c41c412 cmd/go: skip git sha256 tests if git < 2.29 + 2025-11-01 385dc33250 runtime: prevent time.Timer.Reset(0) from deadlocking testing/synctest tests + 2025-10-31 99b724f454 cmd/go: document purego convention + 2025-10-31 27937289dc runtime: avoid zeroing scavenged memory + 2025-10-30 89dee70484 runtime: prioritize panic output over racefini + 2025-10-30 8683bb846d runtime: optimistically CAS atomicstatus directly in enter/exitsyscall + 2025-10-30 5b8e850340 runtime: don't track scheduling latency for _Grunning <-> _Gsyscall + 2025-10-30 251814e580 runtime: document tracer invariants explicitly + 2025-10-30 7244e9221f runtime: eliminate _Psyscall + 2025-10-30 5ef19c0d0c strconv: delete divmod1e9 + 2025-10-30 d32b1f02c3 runtime: delete timediv + 2025-10-30 cbbd385cb8 strconv: remove arch-specific decision in formatBase10 + 2025-10-30 6aca04a73a reflect: correct internal docs for uncommonType + 2025-10-30 235b4e729d cmd/compile/internal/ssa: model right shift more precisely + 2025-10-30 d44db293f9 go/token: fix a typo in a comment + 2025-10-30 cdc6b559ca strconv: remove hand-written divide on 32-bit systems + 2025-10-30 1e5bb416d8 cmd/compile: implement bits.Mul64 on 32-bit systems + 2025-10-30 38317c44e7 crypto/internal/fips140/aes: fix CTR generator + 2025-10-29 3be9a0e014 go/types, types: proceed with correct (invalid) type in case of a selector error + 2025-10-29 d2c5fa0814 strconv: remove &0xFF trick in formatBase10 + 2025-10-29 9bbda7c99d cmd/compile: make prove understand div, mod better + 2025-10-29 915c1839fe test/codegen: simplify asmcheck pattern matching + 2025-10-29 32ee3f3f73 runtime: tweak example code for gorecover + 2025-10-29 da3fb90b23 crypto/internal/fips140/bigmod: fix extendedGCD comment + 2025-10-29 9035f7aea5 runtime: use internal/strconv + 2025-10-29 49c1da474d internal/itoa, internal/runtime/strconv: delete + 2025-10-29 b2a346bbd1 strconv: move all but Quote to internal/strconv + 2025-10-28 041f564b3e internal/runtime/gc/scan: avoid memory destination on VPCOMPRESSQ + 2025-10-28 81afd3a59b cmd/compile: extend ppc64 MADDLD to match const ADDconst & MULLDconst + 2025-10-28 ea50d61b66 cmd/compile: name change isDirect -> isDirectAndComparable + 2025-10-28 bd4dc413cd cmd/compile: don't optimize away a panicing interface comparison + 2025-10-28 30c047d0d0 cmd/compile: extend loong MOV*idx rules to match ADDshiftLLV + 2025-10-28 46e5e2b09a runtime: define PanicBounds in funcdata.h + 2025-10-28 3da0356685 crypto/internal/fips140test: collect 300M entropy samples for ESV + 2025-10-28 d5953185d5 runtime: amend comments a bit + 2025-10-28 12c8d14d94 errors: document that the target of Is must be comparable + 2025-10-28 1f4d14e493 go/types, types2: pull up package-level object sort to a separate phase + 2025-10-28 b8aa1ee442 go/types, types2: reduce locks held at once in resolveUnderlying + 2025-10-28 24af441437 cmd/compile: rewrite proved multiplies by 0 or 1 into CondSelect + 2025-10-28 2d33a456c6 cmd/compile: move branchelim supported arches to Config + 2025-10-27 2c91c33e88 crypto/subtle,cmd/compile: add intrinsics for ConstantTimeSelect and *Eq + 2025-10-27 73d7635fae cmd/compile: add generic rules to remove bool → int → bool roundtrips + 2025-10-27 1662d55247 cmd/compile: do not Zext bools to 64bits in amd64 CMOV generation rules + 2025-10-27 b8468d8c4e cmd/compile: introduce bytesizeToConst to cleanup switches in prove + 2025-10-27 9e25c2f6de cmd/link: internal linking support for windows/arm64 + 2025-10-27 ff2ebf69c4 internal/runtime/gc/scan: correct size class size check + 2025-10-27 9a77aa4f08 cmd/compile: add position info to sccp debug messages + 2025-10-27 77dc138030 cmd/compile: teach prove about unsigned rounding-up divide + 2025-10-27 a0f33b2887 cmd/compile: change !l.nonzero() into l.maybezero() + 2025-10-27 5453b788fd cmd/compile: optimize Add64carry with unused carries into plain Add64 + 2025-10-27 2ce5aab79e cmd/compile: remove 68857 ModU flowLimit workaround in prove + 2025-10-27 a50de4bda7 cmd/compile: remove 68857 min & max flowLimit workaround in prove + 2025-10-27 53be78630a cmd/compile: use topo-sort in prove to correctly learn facts while walking once + 2025-10-27 dec2b4c83d runtime: avoid bound check in freebsd binuptime + 2025-10-27 916e682d51 cmd/internal/obj, cmd/asm: reclassify the offset of memory access operations on loong64 + 2025-10-27 2835b994fb cmd/go: remove global loader state variable + 2025-10-27 139f89226f cmd/go: use local state for telemetry + 2025-10-27 8239156571 cmd/go: use tagged switch + 2025-10-27 d741483a1f cmd/go: increase stmt threshold on amd64 + 2025-10-27 a6929cf4a7 cmd/go: removed unused code in toolchain.Exec + 2025-10-27 180c07e2c1 go/types, types2: clarify docs for resolveUnderlying + 2025-10-27 d8a32f3d4b go/types, types2: wrap Named.fromRHS into Named.rhs + 2025-10-27 b2af92270f go/types, types2: verify stateMask transitions in debug mode + 2025-10-27 92decdcbaa net/url: further speed up escape and unescape + 2025-10-27 5f4ec3541f runtime: remove unused cgoCheckUsingType function + 2025-10-27 189f2c08cc time: rewrite IsZero method to use wall and ext fields + 2025-10-27 f619b4a00d cmd/go: reorder parameters so that context is first + 2025-10-27 f527994c61 sync: update comments for Once.done + 2025-10-26 5dcaf9a01b runtime: add GOEXPERIMENT=runtimefree + 2025-10-26 d7a52f9369 cmd/compile: use MOV(D|F) with const for Const(64|32)F on riscv64 + 2025-10-26 6f04a92be3 internal/chacha8rand: provide vector implementation for riscv64 + 2025-10-26 54e3adc533 cmd/go: use local loader state in test + 2025-10-26 ca379b1c56 cmd/go: remove loaderstate dependency + 2025-10-26 83a44bde64 cmd/go: remove unused loader state + 2025-10-26 7e7cd9de68 cmd/go: remove temporary rf cleanup script + 2025-10-26 53ad68de4b cmd/compile: allow unaligned load/store on Wasm + 2025-10-25 12ec09f434 cmd/go: use local state object in work.runBuild and work.runInstall + 2025-10-24 643f80a11f runtime: add ppc and s390 to 32 build constraints for gccgo + 2025-10-24 0afbeb5102 runtime: add ppc and s390 to linux 32 bits syscall build constraints for gccgo + 2025-10-24 7b506d106f cmd/go: use local state object in `generate.runGenerate` + 2025-10-24 26a8a21d7f cmd/go: use local state object in `env.runEnv` + 2025-10-24 f2dd3d7e31 cmd/go: use local state object in `vet.runVet` + 2025-10-24 784700439a cmd/go: use local state object in pkg `workcmd` + 2025-10-24 69673e9be2 cmd/go: use local state object in `tool.runTool` + 2025-10-24 2e12c5db11 cmd/go: use local state object in `test.runTest` + 2025-10-24 fe345ff2ae cmd/go: use local state object in `modget.runGet` + 2025-10-24 d312e27e8b cmd/go: use local state object in pkg `modcmd` + 2025-10-24 ea9cf26aa1 cmd/go: use local state object in `list.runList` + 2025-10-24 9926e1124e cmd/go: use local state object in `bug.runBug` + 2025-10-24 2c4fd7b2cd cmd/go: use local state object in `run.runRun` + 2025-10-24 ade9f33e1f cmd/go: add loaderstate as field on `mvsReqs` + 2025-10-24 ccf4192a31 cmd/go: make ImportMissingError work with local state + 2025-10-24 f5403f15f0 debug/pe: check for zdebug_gdb_scripts section in testDWARF + 2025-10-24 a26f860fa4 runtime: use 32-bit hash for maps on Wasm + 2025-10-24 747fe2efed encoding/json/v2: fix typo in documentation about errors.AsType + 2025-10-24 94f47fc03f cmd/link: remove pointless assignment in SetSymAlign + 2025-10-24 e6cff69051 crypto/x509: move constraint checking after chain building + 2025-10-24 f5f69a3de9 encoding/json/jsontext: avoid pinning application data in pools + 2025-10-24 a6a59f0762 encoding/json/v2: use slices.Sort directly + 2025-10-24 0d3dab9b1d crypto/x509: simplify candidate chain filtering + 2025-10-24 29046398bb cmd/go: refactor injection of modload.LoaderState + 2025-10-24 c18fa69e52 cmd/go: make ErrNoModRoot work with local state + 2025-10-24 296ecc918d cmd/go: add modload.State parameter to AllowedFunc + 2025-10-24 c445a61e52 cmd/go: add loaderstate as field on `QueryMatchesMainModulesError` + 2025-10-24 6ac40051d3 cmd/go: remove module loader state from ccompile + 2025-10-24 6a5a452528 cmd/go: inject vendor dir into builder struct + 2025-10-23 dfac972233 crypto/pbkdf2: add missing error return value in example + 2025-10-23 47bf8f073e unique: fix inconsistent panic prefix in canonmap cleanup path + 2025-10-23 03bd43e8bb go/types, types2: rename Named.resolve to unpack + 2025-10-23 9fcdc814b2 go/types, types2: rename loaded namedState to lazyLoaded + 2025-10-23 8401512a9b go/types, types2: rename complete namedState to hasMethods + 2025-10-23 cf826bfcb4 go/types, types2: set t.underlying exactly once in resolveUnderlying + 2025-10-23 c4e910895b net/url: speed up escape and unescape + 2025-10-23 3f6ac3a10f go/build: use slices.Equal + 2025-10-23 839da71f89 encoding/pem: properly calculate end indexes + 2025-10-23 39ed968832 cmd: update golang.org/x/arch for riscv64 disassembler + 2025-10-23 ca448191c9 all: replace Split in loops with more efficient SplitSeq + 2025-10-23 107fcb70de internal/goroot: replace HasPrefix+TrimPrefix with CutPrefix + 2025-10-23 8378276d66 strconv: optimize int-to-decimal and use consistently + 2025-10-23 e5688d0bdd cmd/internal/obj/riscv: simplify validation and encoding of raw instructions + 2025-10-22 77fc27972a doc/next: improve new(expr) release note + 2025-10-22 d94a8c56ad runtime: cleanup pagetrace + 2025-10-22 02728a2846 crypto/internal/fips140test: add entropy SHA2-384 testing + 2025-10-22 f92e01c117 runtime/cgo: fix cgoCheckArg description + 2025-10-22 50586182ab runtime: use backoff and ISB instruction to reduce contention in (*lfstack).pop and (*spanSet).pop on arm64 + 2025-10-22 1ff59f3dd3 strconv: clean up powers-of-10 table, tests + 2025-10-22 7c9fa4d5e9 cmd/go: check if build output should overwrite files with renames + 2025-10-22 557b4d6e0f comment: change slice to string in function comment/help + 2025-10-22 d09a8c8ef4 go/types, types2: simplify locking in Named.resolveUnderlying + 2025-10-22 5a42af7f6c go/types, types2: in resolveUnderlying, only compute path when needed + 2025-10-22 4bdb55b5b8 go/types, types2: rename Named.under to Named.resolveUnderlying + 2025-10-21 29d43df8ab go/build, cmd/go: use ast.ParseDirective for go:embed + 2025-10-21 4e695dd634 go/ast: add ParseDirective for parsing directive comments + 2025-10-21 06e57e60a7 go/types, types2: only report version errors if new(expr) is ok otherwise + 2025-10-21 6c3d0d259f path/filepath: reword documentation for Rel + 2025-10-21 39fd61ddb0 go/types, types2: guard Named.underlying with Named.mu + 2025-10-21 4a0115c886 runtime,syscall: implement and use syscalln on darwin + 2025-10-21 261c561f5a all: gofmt -w + 2025-10-21 c9c78c06ef strconv: embed testdata in test + 2025-10-21 8f74f9daf4 sync: re-enable race even when panicking + 2025-10-21 8a6c64f4fe syscall: use rawSyscall6 to call ptrace in forkAndExecInChild + 2025-10-21 4620db72d2 runtime: use timer_settime64 on 32-bit Linux + 2025-10-21 b31dc77cea os: support deleting read-only files in RemoveAll on older Windows versions + 2025-10-21 46cc532900 cmd/compile/internal/ssa: fix typo in comment + 2025-10-21 2163a58021 crypto/internal/fips140/entropy: increase AllocsPerRun iterations + 2025-10-21 306eacbc11 cmd/go/testdata/script: disable list_empty_importpath test on Windows + 2025-10-21 a5a249d6a6 all: eliminate unnecessary type conversions + 2025-10-21 694182d77b cmd/internal/obj/ppc64: improve large prologue generation + 2025-10-21 b0dcb95542 cmd/compile: leave the horses alone + 2025-10-21 9a5a1202f4 runtime: clean dead architectures from go:build constraint + 2025-10-21 8539691d0c crypto/internal/fips140/entropy: move to crypto/internal/entropy/v1.0.0 + 2025-10-20 99cf4d671c runtime: save lasx and lsx registers in loong64 async preemption + 2025-10-20 79ae97fe9b runtime: make procyieldAsm no longer loop infinitely if passed 0 + 2025-10-20 f838faffe2 runtime: wrap procyield assembly and check for 0 + 2025-10-20 ee4d2c312d runtime/trace: dump test traces on validation failure + 2025-10-20 7b81a1e107 net/url: reduce allocs in Encode + 2025-10-20 e425176843 cmd/asm: fix typo in comment + 2025-10-20 dc9a3e2a65 runtime: fix generation skew with trace reentrancy + 2025-10-20 df33c17091 runtime: add _Gdeadextra status + 2025-10-20 7503856d40 cmd/go: inject loaderstate into matcher function + 2025-10-20 d57c3fd743 cmd/go: inject State parameter into `work.runInstall` + 2025-10-20 e94a5008f6 cmd/go: inject State parameter into `work.runBuild` + 2025-10-20 d9e6f95450 cmd/go: inject State parameter into `workcmd.runSync` + 2025-10-20 9769a61e64 cmd/go: inject State parameter into `modget.runGet` + 2025-10-20 f859799ccf cmd/go: inject State parameter into `modcmd.runVerify` + 2025-10-20 0f820aca29 cmd/go: inject State parameter into `modcmd.runVendor` + 2025-10-20 92aa3e9e98 cmd/go: inject State parameter into `modcmd.runInit` + 2025-10-20 e176dff41c cmd/go: inject State parameter into `modcmd.runDownload` + 2025-10-20 e7c66a58d5 cmd/go: inject State parameter into `toolchain.Select` + 2025-10-20 4dc3dd9a86 cmd/go: add loaderstate to Switcher + 2025-10-20 bcf7da1595 cmd/go: convert functions to methods + 2025-10-20 0d3044f965 cmd/go: make Reset work with any State instance + 2025-10-20 386d81151d cmd/go: make setState work with any State instance + 2025-10-20 a420aa221e cmd/go: inject State parameter into `tool.runTool` + 2025-10-20 441e7194a4 cmd/go: inject State parameter into `test.runTest` + 2025-10-20 35e8309be2 cmd/go: inject State parameter into `list.runList` + 2025-10-20 29a81624f7 cmd/go: inject state parameter into `fmtcmd.runFmt` + 2025-10-20 f7eaea02fd cmd/go: inject state parameter into `clean.runClean` + 2025-10-20 58a8fdb6cf cmd/go: inject State parameter into `bug.runBug` + 2025-10-20 8d0bef7ffe runtime: add linkname documentation and guidance + 2025-10-20 3e43f48cb6 encoding/asn1: use reflect.TypeAssert to improve performance + 2025-10-20 4ad5585c2c runtime: fix _rt0_ppc64x_lib on aix + 2025-10-17 a5f55a441e cmd/fix: add modernize and inline analyzers + 2025-10-17 80876f4b42 cmd/go/internal/vet: tweak help doc + 2025-10-17 b5aefe07e5 all: remove unnecessary loop variable copies in tests + 2025-10-17 5137c473b6 go/types, types2: remove references to under function in comments + 2025-10-17 dbbb1bfc91 all: correct name for comments + 2025-10-17 0983090171 encoding/pem: properly decode strange PEM data + 2025-10-17 36863d6194 runtime: unify riscv64 library entry point + 2025-10-16 0c14000f87 go/types, types2: remove under(Type) in favor of Type.Underlying() + 2025-10-16 1099436f1b go/types, types2: change and enforce lifecycle of Named.fromRHS and Named.underlying fields + 2025-10-16 41f5659347 go/types, types2: remove superfluous unalias call (minor cleanup) + 2025-10-16 e7351c03c8 runtime: use DC ZVA instead of its encoding in WORD in arm64 memclr + 2025-10-16 6cbe0920c4 cmd: update to x/tools@7d9453cc + 2025-10-15 45eee553e2 cmd/internal/obj: move ARM64RegisterExtension from cmd/asm/internal/arch + 2025-10-15 27f9a6705c runtime: increase repeat count for alloc test + 2025-10-15 b68cebd809 net/http/httptest: record failed ResponseWriter writes + 2025-10-15 f1fed742eb cmd: fix three printf problems reported by newest vet + 2025-10-15 0984dcd757 cmd/compile: fix an error in comments + 2025-10-15 31f82877e8 go/types, types2: fix misleading internal comment + 2025-10-15 6346349f56 cmd/compile: replace angle brackets with square + 2025-10-15 284379cdfc cmd/compile: remove rematerializable values from live set across calls + 2025-10-15 519ae514ab cmd/compile: eliminate bound check for slices of the same length + 2025-10-15 b5a29cca48 cmd/distpack: add fix tool to inventory + 2025-10-15 bb5eb51715 runtime/pprof: fix errors in pprof_test + 2025-10-15 5c9a26c7f8 cmd/compile: use arm64 neon in LoweredMemmove/LoweredMemmoveLoop + 2025-10-15 61d1ff61ad cmd/compile: use block starting position for phi line number + 2025-10-15 5b29875c8e cmd/go: inject State parameter into `run.runRun` + 2025-10-15 5113496805 runtime/pprof: skip flaky test TestProfilerStackDepth/heap for now + 2025-10-15 36086e85f8 cmd/go: create temporary cleanup script + 2025-10-14 7056c71d32 cmd/compile: disable use of new saturating float-to-int conversions + 2025-10-14 6d5b13793f Revert "cmd/compile: make 386 float-to-int conversions match amd64" + 2025-10-14 bb2a14252b Revert "runtime: adjust softfloat corner cases to match amd64/arm64" + 2025-10-14 3bc9d9fa83 Revert "cmd/compile: make wasm match other platforms for FP->int32/64 conversions" + 2025-10-14 ee5af46172 encoding/json: avoid misleading errors under goexperiment.jsonv2 + 2025-10-14 11d3d2f77d cmd/internal/obj/arm64: add support for PAC instructions + 2025-10-14 4dbf1a5a4c cmd/compile/internal/devirtualize: do not track assignments to non-PAUTO + 2025-10-14 0ddb5ed465 cmd/compile/internal/devirtualize: use FatalfAt instead of Fatalf where possible + 2025-10-14 0a239bcc99 Revert "net/url: disallow raw IPv6 addresses in host" + 2025-10-14 5a9ef44bc0 cmd/compile/internal/devirtualize: fix OCONVNOP assertion + 2025-10-14 3765758b96 go/types, types2: minor cleanup (remove TODO) + 2025-10-14 f6b9d56aff crypto/internal/fips140/entropy: fix benign race + 2025-10-14 60f6d2f623 crypto/internal/fips140/entropy: support SHA-384 sizes for ACVP tests + 2025-10-13 6fd8e88d07 encoding/json/v2: restrict presence of default options + 2025-10-13 1abc6b0204 go/types, types2: permit type cycles through type parameter lists + 2025-10-13 9fdd6904da strconv: add tests that Java once mishandled + 2025-10-13 9b8742f2e7 cmd/compile: don't depend on arch-dependent conversions in the compiler + 2025-10-13 0e64ee1286 encoding/json/v2: report EOF for top-level values in UnmarshalDecode + 2025-10-13 6bcd97d9f4 all: replace calls to errors.As with errors.AsType + 2025-10-11 1cd71689f2 crypto/x509: rework fix for CVE-2025-58187 + 2025-10-11 8aa1efa223 cmd/link: in TestFallocate, only check number of blocks on Darwin + 2025-10-10 b497a29d25 encoding/json: fix regression in quoted numbers under goexperiment.jsonv2 + 2025-10-10 48bb7a6114 cmd/compile: repair bisection behavior for float-to-unsigned conversion + 2025-10-10 e8a53538b4 runtime: fail TestGoroutineLeakProfile on data race + 2025-10-10 e3be2d1b2b net/url: disallow raw IPv6 addresses in host + 2025-10-10 aced4c79a2 net/http: strip request body headers on POST to GET redirects + 2025-10-10 584a89fe74 all: omit unnecessary reassignment + 2025-10-10 69e8279632 net/http: set cookie host to Request.Host when available + 2025-10-10 6f4c63ba63 cmd/go: unify "go fix" and "go vet" + 2025-10-10 955a5a0dc5 runtime: support arm64 Neon in async preemption + 2025-10-10 5368e77429 net/http: run TestRequestWriteTransport with fake time to avoid flakes + 2025-10-09 c53cb642de internal/buildcfg: enable greenteagc experiment for loong64 + 2025-10-09 954fdcc51a cmd/compile: declare no output register for loong64 LoweredAtomic{And,Or}32 ops + 2025-10-09 19a30ea3f2 cmd/compile: call generated size-specialized malloc functions directly + 2025-10-09 80f3bb5516 reflect: remove timeout in TestChanOfGC + 2025-10-09 9db7e30bb4 net/url: allow IP-literals with IPv4-mapped IPv6 addresses + 2025-10-09 8d810286b3 cmd/compile: make wasm match other platforms for FP->int32/64 conversions + 2025-10-09 b9f3accdcf runtime: adjust softfloat corner cases to match amd64/arm64 + 2025-10-09 78d75b3799 cmd/compile: make 386 float-to-int conversions match amd64 + 2025-10-09 0e466a8d1d cmd/compile: modify float-to-[u]int so that amd64 and arm64 match + 2025-10-08 4837fbe414 net/http/httptest: check whether response bodies are allowed + 2025-10-08 ee163197a8 path/filepath: return cleaned path from Rel + 2025-10-08 de9da0de30 cmd/compile/internal/devirtualize: improve concrete type analysis + 2025-10-08 ae094a1397 crypto/internal/fips140test: make entropy file pair names match + 2025-10-08 941e5917c1 runtime: cleanup comments from asm_ppc64x.s improvements + 2025-10-08 d945600d06 cmd/gofmt: change -d to exit 1 if diffs exist + 2025-10-08 d4830c6130 cmd/internal/obj: fix Link.Diag printf errors + 2025-10-08 e1ca1de123 net/http: format pprof.go + 2025-10-08 e5d004c7a8 net/http: update HTTP/2 documentation to reference new config features + 2025-10-08 97fd6bdecc cmd/compile: fuse NaN checks with other comparisons + 2025-10-07 78b43037dc cmd/go: refactor usage of `workFilePath` + 2025-10-07 bb1ca7ae81 cmd/go, testing: add TB.ArtifactDir and -artifacts flag + 2025-10-07 1623927730 cmd/go: refactor usage of `requirements` + 2025-10-07 a1661e776f Revert "crypto/internal/fips140/subtle: add assembly implementation of xorBytes for mips64x" + 2025-10-07 cb81270113 Revert "crypto/internal/fips140/subtle: add assembly implementation of xorBytes for mipsx" + 2025-10-07 f2d0d05d28 cmd/go: refactor usage of `MainModules` + 2025-10-07 f7a68d3804 archive/tar: set a limit on the size of GNU sparse file 1.0 regions + 2025-10-07 463165699d net/mail: avoid quadratic behavior in mail address parsing + 2025-10-07 5ede095649 net/textproto: avoid quadratic complexity in Reader.ReadResponse + 2025-10-07 5ce8cd16f3 encoding/pem: make Decode complexity linear + 2025-10-07 f6f4e8b3ef net/url: enforce stricter parsing of bracketed IPv6 hostnames + 2025-10-07 7dd54e1fd7 runtime: make work.spanSPMCs.all doubly-linked + 2025-10-07 3ee761739b runtime: free spanQueue on P destroy + 2025-10-07 8709a41d5e encoding/asn1: prevent memory exhaustion when parsing using internal/saferio + 2025-10-07 9b9d02c5a0 net/http: add httpcookiemaxnum GODEBUG option to limit number of cookies parsed + 2025-10-07 3fc4c79fdb crypto/x509: improve domain name verification + 2025-10-07 6e4007e8cf crypto/x509: mitigate DoS vector when intermediate certificate contains DSA public key + 2025-10-07 6f7926589d cmd/go: refactor usage of `modRoots` + 2025-10-07 11d5484190 runtime: fix self-deadlock on sbrk platforms + 2025-10-07 2e52060084 cmd/go: refactor usage of `RootMode` + 2025-10-07 f86ddb54b5 cmd/go: refactor usage of `ForceUseModules` + 2025-10-07 c938051dd0 Revert "cmd/compile: redo arm64 LR/FP save and restore" + 2025-10-07 6469954203 runtime: assert p.destroy runs with GC not running + 2025-10-06 4c0fd3a2b4 internal/goexperiment: remove the synctest GOEXPERIMENT + 2025-10-06 c1e6e49d5d fmt: reduce Errorf("x") allocations to match errors.New("x") + 2025-10-06 7fbf54bfeb internal/buildcfg: enable greenteagc experiment by default + 2025-10-06 7bfeb43509 cmd/go: refactor usage of `initialized` + 2025-10-06 1d62e92567 test/codegen: make sure assignment results are used. + 2025-10-06 4fca79833f runtime: delete redundant code in the page allocator + 2025-10-06 719dfcf8a8 cmd/compile: redo arm64 LR/FP save and restore + 2025-10-06 f3312124c2 runtime: remove batching from spanSPMC free + 2025-10-06 24416458c2 cmd/go: export type State + 2025-10-06 c2fb15164b testing/synctest: remove Run + 2025-10-06 ac2ec82172 runtime: bump thread count slack for TestReadMetricsSched + 2025-10-06 e74b224b7c crypto/tls: streamline BoGo testing w/ -bogo-local-dir + 2025-10-06 3a05e7b032 spec: close tag + 2025-10-03 2a71af11fc net/url: improve URL docs + 2025-10-03 ee5369b003 cmd/link: add LIBRARY statement only with -buildmode=cshared + 2025-10-03 1bca4c1673 cmd/compile: improve slicemask removal + 2025-10-03 38b26f29f1 cmd/compile: remove stores to unread parameters + 2025-10-03 003b5ce1bc cmd/compile: fix SIMD const rematerialization condition + 2025-10-03 d91148c7a8 cmd/compile: enhance prove to infer bounds in slice len/cap calculations + 2025-10-03 20c9377e47 cmd/compile: enhance the chunked indexing case to include reslicing + 2025-10-03 ad3db2562e cmd/compile: handle rematerialized op for incompatible reg constraint + 2025-10-03 18cd4a1fc7 cmd/compile: use the right type for spill slot + 2025-10-03 1caa95acfa cmd/compile: enhance prove to deal with double-offset IsInBounds checks + 2025-10-03 ec70d19023 cmd/compile: rewrite to elide Slicemask from len==c>0 slicing + 2025-10-03 10e7968849 cmd/compile: accounts rematerialize ops's output reginfo + 2025-10-03 ab043953cb cmd/compile: minor tweak for race detector + 2025-10-03 ebb72bef44 cmd/compile: don't treat devel compiler as a released compiler + 2025-10-03 c54dc1418b runtime: support valgrind (but not asan) in specialized malloc functions + 2025-10-03 a7917eed70 internal/buildcfg: enable specializedmalloc experiment + 2025-10-03 630799c6c9 crypto/tls: add flag to render HTML BoGo report Change-Id: I6bf904c523a77ee7d3dea9c8ae72292f8a5f2ba5
2025-11-04cmd/compile: faster liveness analysis in regallocDaniel Morsing
Instead of iterating until dataflow stabilization, fill in values known to be live at the beginning of loop headers. This reduces the number of passes over the CFG from the depth of the loopnest to just 2. In a test instrumented version of this change, run against cmd/compile/internal/ssa, it brought the time spent in liveness analysis down to 150.52ms from 225.49ms on my machine. Change-Id: Ic72762eedfd1f10b1ba74c430ed62ab4ebd3ec5c Reviewed-on: https://go-review.googlesource.com/c/go/+/695255 Reviewed-by: Keith Randall <khr@google.com> Auto-Submit: Keith Randall <khr@golang.org> Reviewed-by: Michael Pratt <mpratt@google.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Keith Randall <khr@golang.org>
2025-10-15cmd/compile: remove rematerializable values from live set across callsAlexander Musman
Remove rematerializable values in the live set across call operations, preventing dead constant rematerialization. When computing live values across function calls, rematerializable values were being kept in the live set unnecessarily. This caused the shuffling to rematerialize dead constants. This change leads to code size reduction on arm64 linux: Executable Old .text New .text Change ------------------------------------------------------- asm 1969236 1964356 -0.25% cgo 1739588 1734884 -0.27% compile 8950788 8932500 -0.20% cover 1877268 1872916 -0.23% link 2572660 2565076 -0.29% preprofile 866772 863828 -0.34% vet 2888628 2881028 -0.26% There seems also some compile time effect: orig.results uexp.results sec/op sec/op vs base BleveIndexBatch100-4 7.414 ± 2% 7.352 ± 1% ~ (p=0.218 n=10) ESBuildThreeJS-4 777.3m ± 1% 778.1m ± 1% ~ (p=0.529 n=10) ESBuildRomeTS-4 197.3m ± 1% 199.0m ± 1% ~ (p=0.143 n=10) EtcdPut-4 64.92m ± 2% 64.95m ± 2% ~ (p=0.912 n=10) EtcdSTM-4 323.9m ± 1% 323.0m ± 1% ~ (p=0.393 n=10) GoBuildKubelet-4 160.1 ± 0% 159.4 ± 0% -0.42% (p=0.001 n=10) GoBuildKubeletLink-4 12.40 ± 1% 12.27 ± 1% ~ (p=0.529 n=10) GoBuildIstioctl-4 125.8 ± 0% 125.2 ± 0% -0.42% (p=0.000 n=10) GoBuildIstioctlLink-4 8.679 ± 0% 8.686 ± 1% ~ (p=0.912 n=10) GoBuildFrontend-4 49.18 ± 0% 48.73 ± 0% -0.92% (p=0.000 n=10) GoBuildFrontendLink-4 2.300 ± 1% 2.292 ± 1% -0.35% (p=0.043 n=10) GopherLuaKNucleotide-4 37.77 ± 6% 38.07 ± 2% ~ (p=0.218 n=10) MarkdownRenderXHTML-4 274.3m ± 0% 275.2m ± 0% +0.34% (p=0.003 n=10) Tile38QueryLoad-4 650.7µ ± 0% 650.2µ ± 0% ~ (p=0.971 n=10) geomean 2.130 2.127 -0.15% Change-Id: I7a766195ee17bfd9e47d7a940864619f553416ff Reviewed-on: https://go-review.googlesource.com/c/go/+/707415 Reviewed-by: Dmitri Shuralyov <dmitshur@google.com> Reviewed-by: Keith Randall <khr@golang.org> Auto-Submit: Keith Randall <khr@golang.org> Reviewed-by: Keith Randall <khr@google.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2025-10-03cmd/compile: fix SIMD const rematerialization conditionJunyang Shao
This CL fixes a condition for the previous fix CL 704056. Cherry-picked from the dev.simd branch. This CL is not necessarily SIMD specific. Apply early to reduce risk. Test is SIMD specific so not included for now. Change-Id: I1f1f8c6f72870403cb3dff14755c43385dc0c933 Reviewed-on: https://go-review.googlesource.com/c/go/+/705499 LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Cherry Mui <cherryyz@google.com> Reviewed-on: https://go-review.googlesource.com/c/go/+/708864 Reviewed-by: David Chase <drchase@google.com>
2025-10-03cmd/compile: handle rematerialized op for incompatible reg constraintJunyang Shao
This CL fixes an issue raised by contributor dominikh@. Cherry-picked from the dev.simd branch. This CL is not necessarily SIMD specific. Apply early to reduce risk. Test is SIMD specific so not included for now. Change-Id: I941b330a6ba6f6c120c69951ddd24933f2f0b3ec Reviewed-on: https://go-review.googlesource.com/c/go/+/704056 LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: David Chase <drchase@google.com> Reviewed-on: https://go-review.googlesource.com/c/go/+/708861
2025-10-03cmd/compile: use the right type for spill slotCherry Mui
Currently, when shuffling registers, if we need to spill a register, we always create a spill slot of type int64. The type doesn't actually matter, as long as it is wide enough to hold the registers. This is no longer true with SIMD registers, which could be wider than a int64. Create the slot with the proper type instead. Cherry-picked from the dev.simd branch. This CL is not necessarily SIMD specific. Apply early to reduce risk. Test is SIMD specific so not included for now. Change-Id: I85c82e2532001bfdefe98c9446f2dd18583d49b4 Reviewed-on: https://go-review.googlesource.com/c/go/+/704055 TryBot-Bypass: Cherry Mui <cherryyz@google.com> Reviewed-by: David Chase <drchase@google.com> Reviewed-by: Junyang Shao <shaojunyang@google.com> Reviewed-on: https://go-review.googlesource.com/c/go/+/708860 LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2025-10-03cmd/compile: accounts rematerialize ops's output reginfoJunyang Shao
This CL implements the check for rematerializeable value's output regspec at its remateralization site. It has some potential problems, please see the TODO in regalloc.go. Fixes #70451. Cherry-picked from the dev.simd branch. This CL is not necessarily SIMD specific. Apply early to reduce risk. Change-Id: Ib624b967031776851136554719e939e9bf116b7c Reviewed-on: https://go-review.googlesource.com/c/go/+/695315 Reviewed-by: David Chase <drchase@google.com> TryBot-Bypass: David Chase <drchase@google.com> Reviewed-on: https://go-review.googlesource.com/c/go/+/708857 Reviewed-by: Junyang Shao <shaojunyang@google.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2025-09-22[dev.simd] cmd/compile: fix SIMD const rematerialization conditionJunyang Shao
This CL fixes a condition for the previous fix CL 704056. Change-Id: I1f1f8c6f72870403cb3dff14755c43385dc0c933 Reviewed-on: https://go-review.googlesource.com/c/go/+/705499 LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Cherry Mui <cherryyz@google.com>
2025-09-18[dev.simd] cmd/compile: handle rematerialized op for incompatible reg constraintJunyang Shao
This CL fixes an issue raised by contributor dominikh@. Change-Id: I941b330a6ba6f6c120c69951ddd24933f2f0b3ec Reviewed-on: https://go-review.googlesource.com/c/go/+/704056 LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: David Chase <drchase@google.com>
2025-09-16[dev.simd] cmd/compile: use the right type for spill slotCherry Mui
Currently, when shuffling registers, if we need to spill a register, we always create a spill slot of type int64. The type doesn't actually matter, as long as it is wide enough to hold the registers. This is no longer true with SIMD registers, which could be wider than a int64. Create the slot with the proper type instead. Change-Id: I85c82e2532001bfdefe98c9446f2dd18583d49b4 Reviewed-on: https://go-review.googlesource.com/c/go/+/704055 TryBot-Bypass: Cherry Mui <cherryyz@google.com> Reviewed-by: David Chase <drchase@google.com> Reviewed-by: Junyang Shao <shaojunyang@google.com>
2025-09-11[dev.simd] all: merge master (cf5e993) into dev.simdCherry Mui
Merge List: + 2025-09-11 cf5e993177 cmd/link: allow one to specify the data section in the internal linker + 2025-09-11 cdb3d467fa encoding/gob: make use of reflect.TypeAssert + 2025-09-11 fef360964c archive/tar: fix typo in benchmark name + 2025-09-11 7d562b8460 syscall: actually remove unreachable code + 2025-09-11 c349582344 crypto/rsa: don't test CL 687836 against v1.0.0 FIPS 140-3 module + 2025-09-11 253dd08f5d debug/macho: filter non-external symbols when reading imported symbols without LC_DYSYMTAB + 2025-09-10 2009e6c596 internal/runtime/maps: remove redundant package docs + 2025-09-10 de5d7eccb9 runtime/internal/maps: only conditionally clear groups when sparse + 2025-09-10 8098b99547 internal/runtime/maps: speed up Clear + 2025-09-10 fe5420b054 cmd: delete some more windows/arm remnants + 2025-09-10 fad1dc608d runtime: don't artificially limit TestReadMetricsSched + 2025-09-10 b1f3e38e41 cmd/compile: when CSEing two values, prefer the statement marked one + 2025-09-10 00824f5ff5 types2: better documentation for resolve() + 2025-09-10 5cf8ca42e3 internal/trace/raw: use strings.Cut instead of strings.SplitN 2 + 2025-09-10 80a2aae922 Revert "cmd/compile: improve stp merging for non-sequent cases" + 2025-09-10 f327a05419 go/token, syscall: annotate if blocks that defeat vet's unreachable pass + 2025-09-10 9650c97d0f syscall: remove unreachable code + 2025-09-10 f1c4b860d4 Revert "crypto/internal/fips140: update frozen module version to "v1.0.0"" + 2025-09-10 30686c4cc8 encoding/json/v2: document context annotation with SemanticError + 2025-09-09 c5737dc21b runtime: when using cgo on 386, call C sigaction function + 2025-09-09 b9a4a09b0f runtime: remove duff support for riscv64 + 2025-09-09 4dac9e093f cmd/compile: use generated loops instead of DUFFCOPY on riscv64 + 2025-09-09 879ff736d3 cmd/compile: use generated loops instead of DUFFZERO on riscv64 + 2025-09-09 77643dc63f cmd/compile: simplify zerorange on riscv64 + 2025-09-09 e6605a1bcc encoding/json: use reflect.TypeAssert + 2025-09-09 4c20f7f15a cmd/cgo: run gcc to get errors and debug info in parallel + 2025-09-09 5dcedd6550 runtime: lock mheap_.speciallock when allocating synctest specials + 2025-09-09 d3be949ada runtime: don't negate eventfd errno + 2025-09-09 836fa74518 syscall: optimise cgo clearenv + 2025-09-09 ce39174482 crypto/rsa: check PrivateKey.D for consistency with Dp and Dq + 2025-09-09 5d9d0513dc crypto/rsa: check for post-Precompute changes in Validate + 2025-09-09 968a5107a9 crypto/internal/fips140: update frozen module version to "v1.0.0" + 2025-09-09 645ee44492 crypto/ecdsa: deprecate direct use of big.Int fields in keys + 2025-09-09 a67977da5e cmd/compile/internal/inline: ignore superfluous slicing + 2025-09-09 a5fa5ea51c cmd/compile/internal/ssa: expand runtime.memequal for length {3,5,6,7} + 2025-09-09 4c63d798cb cmd/compile: improve stp merging for non-sequent cases + 2025-09-09 bdd51e7855 cmd/compile: use constant zero register instead of specialized zero instructions on mips64x + 2025-09-09 10ac80de77 cmd/compile: introduce CCMP generation + 2025-09-09 3b3b16957c Revert "cmd/go: use os.Rename to move files on Windows" + 2025-09-09 e3223518b8 cmd/go: split generating cover files into its own action + 2025-09-09 af03343f93 cmd/compile: fix bounds check report + 2025-09-08 6447ff409a cmd/compile: fold constant in ADDshift op on loong64 + 2025-09-08 5b218461f9 cmd/compile: optimize loads from abi.Type.{Size_,PtrBytes,Kind_} + 2025-09-08 b915e14490 cmd/compile: consolidate logic for rewriting fixed loads + 2025-09-08 06e791c0cd cmd/compile: simplify zerorange on mips + 2025-09-08 cf42b785b7 cmd/cgo: run recordTypes for each of the debugs at the end of Translate + 2025-09-08 5e6296f3f8 archive/tar: optimize nanosecond parsing in parsePAXTime + 2025-09-08 ea00650784 debug/pe: permit symbols with no name + 2025-09-08 4cc7cc74c3 crypto: update Hash comments to point to crypto/sha3 + 2025-09-08 ff45d5d53c encoding/json/internal/jsonflags: fix comment with wrong field name + 2025-09-06 861c90c907 net/http: pool transport gzip readers + 2025-09-06 57769b5532 os: reject OpenDir of a non-directory file in Plan 9 + 2025-09-06 a6144613d3 crypto/tls: use context.AfterFunc in handshakeContext + 2025-09-05 e8126bce9e runtime/cgo: save and restore R31 for crosscall1 on loong64 + 2025-09-05 d767064170 cmd/compile: mark abi.PtrType.Elem sym as used + 2025-09-05 0b1eed09a3 vendor/golang.org/x/tools: update to a09a2fb + 2025-09-05 f5b20689e9 cmd/compile: optimize loads from readonly globals into constants on loong64 + 2025-09-05 3492e4262b cmd/compile: simplify specific addition operations using the ADDV16 instruction + 2025-09-05 459b85ccaa cmd/fix: remove all functionality except for buildtag + 2025-09-05 87e72769fa runtime: simplify openbsd check in usesLibcall and mStackIsSystemAllocated + 2025-09-05 bb48272e24 cmd/compile: simplify zerorange on mips64 + 2025-09-05 d52a56cce1 cmd/link/internal/ld: unconditionally use posix_fallocate on FreeBSD + 2025-09-04 9d0829963c net/http: fix cookie value of "" being interpreted as empty string. + 2025-09-04 ddce0522be cmd/internal/obj/loong64: add ADDU16I.D instruction support + 2025-09-04 00b8474e47 cmd/trace: don't filter events for profile by whether they have stack + 2025-09-04 e36c5aead6 log/slog: add multiple handlers support for logger + 2025-09-04 150fae714e crypto/x509: don't force system roots load in SetFallbackRoots + 2025-09-04 4f7bbc62c7 runtime, cmd/compile, cmd/internal/obj: remove duff support for loong64 + 2025-09-04 b8cc907425 cmd/internal/obj/loong64: fix the usage of offset in the instructions [X]VLDREPL.{B/H/W/D} + 2025-09-04 8c27a80890 path{,/filepath}: speed up Match + 2025-09-04 b7c20413c5 runtime: remove obsolete osArchInit function + 2025-09-04 df29038486 cmd/compile/internal/ssa: load constant values from abi.PtrType.Elem + 2025-09-04 4373754bc9 cmd/compile: add store to load forwarding rules on riscv64 + 2025-09-03 80038586ed cmd/compile: export to DWARF types only referenced through interfaces + 2025-09-03 91e76a513b cmd/compile: use generated loops instead of DUFFCOPY on loong64 + 2025-09-03 c552ad913f cmd/compile: simplify memory load and store operations on loong64 + 2025-09-03 e8f9127d1f net/netip: export Prefix.Compare, fix ordering + 2025-09-03 731e546166 cmd/compile: simplify the support for 32bit high multiply on loong64 Change-Id: I2c124fb8071e2972d39804867cafb6806e601aba
2025-09-09cmd/compile: use constant zero register instead of specialized zero ↵Julian Zhu
instructions on mips64x Refer to CL 633075, mips64x has a constant zero register that can be used to do this. Change-Id: I7b60f9a9fe0015299f48b9219ba0eddd3c02e07a Reviewed-on: https://go-review.googlesource.com/c/go/+/700935 Auto-Submit: Keith Randall <khr@golang.org> Reviewed-by: Keith Randall <khr@golang.org> Reviewed-by: Keith Randall <khr@google.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Mark Freeman <markfreeman@google.com>
2025-09-03[dev.simd] all: merge master (4c4cefc) into dev.simdCherry Mui
Merge List: + 2025-09-03 4c4cefc19a cmd/gofmt: simplify logic to process arguments + 2025-09-03 925a3cdcd1 unicode/utf8: make DecodeRune{,InString} inlineable + 2025-09-03 3e596d448f math: rename Modf parameter int to integer + 2025-09-02 2a7f1d47b0 runtime: use one more address bit for tagged pointers + 2025-09-02 b09068041a cmd/dist: run racebench tests only in longtest mode + 2025-09-02 355370ac52 runtime: add comment for concatstring2 + 2025-09-02 1eec830f54 go/doc: linkify interface methods + 2025-08-31 7bba745820 cmd/compile: use generated loops instead of DUFFZERO on loong64 + 2025-08-31 882335e2cb cmd/internal/obj/loong64: add LDPTR.{W/D} and STPTR.{W/D} instructions support + 2025-08-31 d4b17f5869 internal/runtime/atomic: reset wrong jump target in Cas{,64} on loong64 + 2025-08-31 6a08e80399 net/http: skip redirecting in ServeMux when URL path for CONNECT is empty + 2025-08-29 8bcda6c79d runtime/race: add race detector support for linux/riscv64 + 2025-08-29 8377adafc5 cmd/cgo: split loadDWARF into two parts + 2025-08-29 a7d9d5a80a cmd/cgo: move typedefs and typedefList out of Package + 2025-08-29 1d459c4357 all: delete more windows/arm remnants + 2025-08-29 27ce6e4e26 cmd/compile: remove sign extension before MULW on riscv64 + 2025-08-29 84b070bfb1 cmd/compile/internal/ssa: make oneBit function generic + 2025-08-29 fe42628dae internal/cpu: inline DebugOptions + 2025-08-29 94b7d519bd net: update document on limitation of iprawsock on Windows + 2025-08-29 ba9e1ddccf testing: allow specify temp dir by GOTMPDIR environment variable + 2025-08-29 9f6936b8da cmd/link: disallow linkname of runtime.addmoduledata + 2025-08-29 89d41d254a bytes, strings: speed up TrimSpace + 2025-08-29 38204e0872 testing/synctest: call out common issues with tests + 2025-08-29 252c901125 os,syscall: pass file flags to CreateFile on Windows + 2025-08-29 53515fb0a9 crypto/tls: use hash.Cloner + 2025-08-28 13bb48e6fb go/constant: fix complex != unknown comparison + 2025-08-28 ba1109feb5 net: remove redundant cgoLookupCNAME return parameter + 2025-08-28 f74ed44ed9 net/http/httputil: remove redundant pw.Close() call in DumpRequestOut + 2025-08-28 a9689d2e0b time: skip TestLongAdjustTimers in short mode on single CPU systems + 2025-08-28 ebc763f76d syscall: only get parent PID if SysProcAttr.Pdeathsig is set + 2025-08-28 7f1864b0a8 strings: remove redundant "runs" from string.Fields docstring + 2025-08-28 90c21fa5b6 net/textproto: eliminate some bounds checks + 2025-08-27 e47d88beae os: return nil slice when ReadDir is used with a file on file_windows + 2025-08-27 6b837a64db cmd/internal/obj/loong64: simplify buildop + 2025-08-27 765905e3bd debug/elf: don't panic if symtab too small + 2025-08-27 2ee4b31242 net/http: Ensure that CONNECT proxied requests respect MaxResponseHeaderBytes + 2025-08-27 b21867b1a2 net/http: require exact match for CrossSiteProtection bypass patterns + 2025-08-27 d19e377f6e cmd/cgo: make it safe to run gcc in parallel + 2025-08-27 49a2f3ed87 net: allow zero value destination address in WriteMsgUDPAddrPort + 2025-08-26 afc51ed007 internall/poll: remove bufs field from Windows' poll.operation + 2025-08-26 801b74eb95 internal/poll: remove rsa field from Windows' poll.operation + 2025-08-26 fa18c547cd syscall: sort Windows env block in StartProcess + 2025-08-26 bfd130db02 internal/poll: don't use stack-allocated WSAMsg parameters + 2025-08-26 dae9e456ae runtime: identify virtual memory layout for riscv64 + 2025-08-25 25c2d4109f math: use Trunc to implement Modf + 2025-08-25 4e05a070c4 math: implement IsInf using Abs + 2025-08-25 1eed4f32a0 math: optimize Signbit implementation slightly + 2025-08-25 bd71b94659 cmd/compile/internal: optimizing add+sll rule using ALSLV instruction on loong64 + 2025-08-25 ea55ca3600 runtime: skip doInit of plugins in runtime.main + 2025-08-25 9ae2f1fb57 internal/trace: skip async preempt off tests on low end systems + 2025-08-25 bbd5342a62 net: fix cgoResSearch + 2025-08-25 ed7f804775 os: set full name for Roots created with Root.OpenRoot + 2025-08-25 a21249436b internal/poll: use fdMutex to provide read/write locking on Windows + 2025-08-24 44c5956bf7 test/codegen: add Mul2 and DivPow2 test for loong64 + 2025-08-24 0aa8019e94 test/codegen: add Mul* test for loong64 + 2025-08-24 83420974b7 test/codegen: add sqrt* abs and copysign test for loong64 + 2025-08-23 f2db0dca0b net/http/httptest: redirect example.com requests to server + 2025-08-22 d86ec92499 internal/syscall/windows: increase internal Windows O_ flags values + 2025-08-22 9d3f7fda70 crypto/tls: fix quic comment typo + 2025-08-22 78a05c541f internal/poll: don't pass non-nil WSAMsg.Name with 0 namelen on windows + 2025-08-22 52c3f73fda runtime/metrics: improve doc + 2025-08-22 a076f49757 os: fix Root.MkdirAll to handle race of directory creation + 2025-08-22 98238fd495 all: delete remaining windows/arm code + 2025-08-21 1ad30844d9 cmd/asm: process forward jump to PCALIGN + 2025-08-21 13c082601d internal/poll: permit nil destination address in WriteMsg{Inet4,Inet6} + 2025-08-21 9b0a507735 runtime: remove remaining windows/arm files and comments + 2025-08-21 1843f1e9c0 cmd/compile: use zero register instead of specialized *zero instructions on loong64 + 2025-08-21 e0870a0a12 cmd/compile: simplify zerorange on loong64 + 2025-08-21 fb8bbe46d5 cmd/compile/internal/ssa: eliminate unnecessary extension operations + 2025-08-21 9632ba8160 cmd/compile: optimize some patterns into revb2h/revb4h instruction on loong64 + 2025-08-21 8dcab6f450 syscall: simplify execve handling on libc platforms + 2025-08-21 ba840c1bf9 cmd/compile: deduplication in the source code generated by mknode + 2025-08-21 fa706ea50f cmd/compile: optimize rule (x + x) << c to x << c+1 on loong64 + 2025-08-21 ffc85ee1f1 cmd/internal/objabi,cmd/link: add support for additional riscv64 relocations Change-Id: I3896f74b1a3cc0a52b29ca48767bb0ba84620f71
2025-08-22[dev.simd] cmd/compile: use X15 for zero value in AVX contextCherry Mui
With the previous CL, the X15 (aliasd with Y15, Z15) register holds the zero value for the whole register width. Use that in AVX context when a zero value is needed. Change-Id: If49b7059bce50c5e86f90bace0eaa830a91fa0fc Reviewed-on: https://go-review.googlesource.com/c/go/+/698238 Reviewed-by: David Chase <drchase@google.com> Reviewed-by: Junyang Shao <shaojunyang@google.com> TryBot-Bypass: Cherry Mui <cherryyz@google.com>
2025-08-21cmd/compile: use zero register instead of specialized *zero instructions on ↵limeidan
loong64 Refer to CL 633075, loong64 has a zero(R0) register that can be used to do this. Change-Id: I846c6bdfcfd6dbfa18338afc13e34e350580ead4 Reviewed-on: https://go-review.googlesource.com/c/go/+/693876 Reviewed-by: Carlos Amedee <carlos@golang.org> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Keith Randall <khr@google.com> Reviewed-by: Keith Randall <khr@golang.org> Auto-Submit: Keith Randall <khr@golang.org>
2025-08-20[dev.simd] all: merge master (9de69f6) into dev.simdCherry Mui
Merge List: + 2025-08-20 9de69f6913 errors: mention Is/As in Join docs + 2025-08-20 4afd482812 cmd/go/internal/doc: pass URL fragments separately with -http + 2025-08-20 509d5f647f internal/poll: don't call Seek for overlapped Windows handles + 2025-08-20 853fc12739 internal/poll: set the correct file offset in FD.Seek for Windows overlapped handles + 2025-08-19 bd885401d5 runtime: save and restore all fcc registers in async preempt on loong64 + 2025-08-19 119546ea4f cmd/go: document install outputs to $GOOS_$GOARCH when cross compiling + 2025-08-19 ffa882059c unique: deflake TestCanonMap/LoadOrStore/ConcurrentUnsharedKeys + 2025-08-19 1f2e8e03e4 os: fix path in MkdirTemp error message + 2025-08-19 5024d0d884 cmd/compile: tweak example command in README + 2025-08-19 b80ffb64d8 internal/trace: remove redundant info from Event.String + 2025-08-19 c7d8bda459 cmd/compile/internal: make function comments match function names + 2025-08-19 de2d741667 internal/trace: use RFC3339Nano for wall clock snapshots in Event.String + 2025-08-19 c61db5ebd5 syscall: forkAndExecInChild1: don't reuse pid variable + 2025-08-19 07ee3bfc63 cmd/go: use modern pprof flags in documentation + 2025-08-18 5a56d8848b cmd/compile: ensure we use allowed registers for input-clobbering instructions + 2025-08-18 c3927a47f0 runtime: fix comments in tracetype.go + 2025-08-15 77f911e31c internal/trace: emit final sync event for generation in Go 1.26+ + 2025-08-15 786be1d2bf runtime: don't overwrite global stop channel in tests + 2025-08-15 4a7fde922f internal/trace: add end-of-generation signal to trace + 2025-08-15 cb814bd5bc net: skip TestIPv4WriteMsgUDPAddrPort on plan9 + 2025-08-15 78a3968c2c runtime/metrics: add metric for current Go-owned thread count + 2025-08-15 ab8121a407 runtime/metrics: add metric for total goroutines created + 2025-08-15 13df972f68 runtime/metrics: add metrics for goroutine sched states + 2025-08-15 bd07fafb0a runtime: disable stack shrinking for all waiting-for-suspendG cases + 2025-08-15 a651e2ea47 runtime: remove duff support for amd64 + 2025-08-15 e4291e484c runtime: remove duff support for arm64 + 2025-08-15 15d6dbc05c cmd/compile: use generated loops instead of DUFFCOPY on arm64 + 2025-08-15 bca3e98b8a cmd/go: test barrier actions + 2025-08-15 052fcde9fd internal/runtime: cleaner overflow checker + 2025-08-15 3871c0d84d syscall: permit nil destination address in sendmsgN{Inet4,Inet6} + 2025-08-14 a8564bd412 runtime: make all synctest bubble violations fatal panics Change-Id: Ibc94566bc69bcb59b1d79b6fa868610ca2d1d223
2025-08-18cmd/compile: ensure we use allowed registers for input-clobbering instructionsKeith Randall
For instructions which clobber their input register, we make a second copy of the input value so it is still available in a register for future instructions. That second copy might not respect the register input restrictions for the instruction. So the second copy we make here can't actually be used by the instruction - it should use the first copy, the second copy is the one that will persist beyond the clobber. Fixes #75063 Change-Id: I99acdc63f0c4e54567a174ff7ada601ae4e796b7 Reviewed-on: https://go-review.googlesource.com/c/go/+/697015 Auto-Submit: Keith Randall <khr@golang.org> Reviewed-by: Keith Randall <khr@google.com> Reviewed-by: David Chase <drchase@google.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2025-08-14[dev.simd] cmd/compile: accounts rematerialize ops's output reginfoJunyang Shao
This CL implements the check for rematerializeable value's output regspec at its remateralization site. It has some potential problems, please see the TODO in regalloc.go. Fixes #70451. Change-Id: Ib624b967031776851136554719e939e9bf116b7c Reviewed-on: https://go-review.googlesource.com/c/go/+/695315 Reviewed-by: David Chase <drchase@google.com> TryBot-Bypass: David Chase <drchase@google.com>
2025-08-14[dev.simd] all: merge master (924fe98) into dev.simdCherry Mui
Conflicts: - src/cmd/compile/internal/amd64/ssa.go - src/cmd/compile/internal/ssa/expand_calls.go - src/cmd/compile/internal/ssagen/ssa.go - src/internal/buildcfg/exp.go - src/internal/cpu/cpu.go - src/internal/cpu/cpu_x86.go - src/runtime/mkpreempt.go - src/runtime/preempt_amd64.go - src/runtime/preempt_amd64.s Merge List: + 2025-08-14 924fe98902 cmd/internal/obj/riscv: add encoding for compressed riscv64 instructions + 2025-08-13 320df537cc cmd/compile: emit classify instructions for infinity tests on riscv64 + 2025-08-13 ca66f907dd cmd/compile: use generated loops instead of DUFFCOPY on amd64 + 2025-08-13 4b1800e476 encoding/json/v2: cleanup error constructors + 2025-08-13 af8870708b encoding/json/v2: fix incorrect marshaling of NaN in float64 any + 2025-08-13 0a75e5a07b encoding/json/v2: fix wrong type with cyclic marshal error in map[string]any + 2025-08-13 de9b6f9875 cmd/pprof: update vendored github.com/google/pprof + 2025-08-13 674c5f0edd os/exec: fix incorrect expansion of ".." in LookPath on plan9 + 2025-08-13 9bbea0f21a cmd/compile: during regalloc, fixedreg values are always available + 2025-08-13 08eef97500 runtime/trace: fix documentation typo + 2025-08-13 2fe5d51d04 internal/trace: fix wrong scope for Event.Range or EvGCSweepActive + 2025-08-13 9fcb87c352 cmd/compile: teach prove about len's & cap's max based on the element size + 2025-08-13 9763ece873 cmd/compile: absorb NEGV into branch on loong64 + 2025-08-13 f10a82b76f all: update vendored dependencies [generated] + 2025-08-13 3bea95b277 cmd/link/internal/ld: remove OpenBSD buildid workaround + 2025-08-12 90b7d7aaa2 cmd/compile/internal: optimize multiplication use new operation 'ADDshiftLLV' on loong64 + 2025-08-12 1b263fc604 runtime/race: restore previous version of LLVM TSAN on macOS + 2025-08-12 b266318cf7 cmd/compile/internal/ssa: use BEQ/BNE to optimize the combination of XOR and EQ/NE on loong64 + 2025-08-12 adbf59525c internal/runtime/gc/scan: avoid -1 index when cache sizes unavailable + 2025-08-12 4e182db5fc Revert "cmd/compile: use generated loops instead of DUFFCOPY on amd64" + 2025-08-12 d2b3c1a504 internal/trace: clarify which StateTransition events have stacks + 2025-08-12 f63e12d0e0 internal/trace: fix Sync.ClockSnapshot comment + 2025-08-12 8e317da77d internal/trace: remove unused StateTransition.id field + 2025-08-12 f67d8ff34a internal/trace/tracev2: adjust comment for consistency + 2025-08-12 fe4d445c36 internal/trace/tracev2: fix EvSTWBegin comment to include stack ID + 2025-08-12 750789fab7 internal/trace/internal/testgen: fix missing stacks nframes arg + 2025-08-12 889ab74169 internal/runtime/gc/scan: import scan kernel from gclab [green tea] + 2025-08-12 182336bf05 net/http: fix data race in client + 2025-08-12 f04421ea9a cmd/compile: soften test for 74788 + 2025-08-12 28aa529c99 cmd/compile: use generated loops instead of DUFFZERO on arm64 + 2025-08-12 ec9e1176c3 cmd/compile: use generated loops instead of DUFFCOPY on amd64 + 2025-08-12 d0a64f7969 Revert "cmd/compile/internal/ssa: Use transitive properties for len/cap" + 2025-08-12 00a7bdcb55 all: delete aliastypeparams GOEXPERIMENT + 2025-08-11 74421a305b Revert "cmd/compile: allow multi-field structs to be stored directly in interfaces" + 2025-08-11 c31359138c Revert "cmd/compile: allow StructSelect [x] of interface data fields for x>0" + 2025-08-11 7248995b60 Revert "cmd/compile: allow more args in StructMake folding rule" + 2025-08-11 caf9fc3ccd Revert "reflect: handle zero-sized fields of directly-stored structures correctly" + 2025-08-11 ce3f3e2ae7 cmd/link/internal/ld, internal/syscall/unix: use posix_fallocate on netbsd + 2025-08-11 3dbef65bf3 database/sql: allow drivers to override Scan behavior + 2025-08-11 2b804abf07 net: context aware Dialer.Dial functions + 2025-08-11 6abfe7b0de cmd/dist: require Go 1.24.6 as minimum bootstrap toolchain + 2025-08-11 691af6ca28 encoding/json: fix Indent trailing whitespace regression in goexperiment.jsonv2 + 2025-08-11 925149da20 net/http: add example for CrossOriginProtection + 2025-08-11 cf4af0b2f3 encoding/json/v2: fix UnmarshalDecode regression with EOF + 2025-08-11 b096ddb9ea internal/runtime/maps: loop invariant code motion with h2(hash) by hand + 2025-08-11 a2431776eb net, os, file/filepath, syscall: use slices.Equal in tests + 2025-08-11 a7f05b38f7 cmd/compile: convert branch with zero to more optimal branch zero on loong64 + 2025-08-11 1718828c81 internal/sync: warn about incorrect unsafe usage in HashTrieMap + 2025-08-11 084c0f8494 cmd/compile: allow InlMark operations to be speculatively executed + 2025-08-10 a62f72f7a7 cmd/compile/internal/ssa: optimise more branches with SGTconst/SGTUconst on loong64 + 2025-08-08 fbac94a799 internal/sync: rename Store parameter from old to new + 2025-08-08 317be4cfeb cmd/compile/internal/staticinit: remove deadcode + 2025-08-08 bce5601cbb cmd/go: fix fips doc link + 2025-08-08 777d76c4f2 text/template: use sync.OnceValue for builtinFuncs + 2025-08-08 0201524c52 math: remove redundant infinity tests + 2025-08-08 dcc77f9e3c cmd/go: fix get -tool when multiple packages are provided + 2025-08-08 c7b85e9ddc all: update blog link + 2025-08-08 a8dd771e13 crypto/tls: check if quic conn can send session ticket + 2025-08-08 bdb2d50fdf net: fix WriteMsgUDPAddrPort addr handling on IPv4 sockets + 2025-08-08 768c51e368 internal/runtime/maps: remove unused var bitsetDeleted + 2025-08-08 b3388569a1 reflect: handle zero-sized fields of directly-stored structures correctly + 2025-08-08 d83b16fcb8 internal/bytealg: vector implementation of compare for riscv64 + 2025-08-07 dd3abf6bc5 internal/bytealg: optimize Index/IndexString on loong64 + 2025-08-07 73ff6d1480 cmd/internal/obj/loong64: change the immediate range of ALSL{W/WU/V} + 2025-08-07 f3606b0825 cmd/compile/internal/ssa: fix typo in LOONG64Ops.go comment + 2025-08-07 ee7bb8969a cmd/internal/obj/loong64: add support for FSEL instruction + 2025-08-07 1f7ffca171 time: skip TestLongAdjustTimers on plan9 (too slow) + 2025-08-06 8282b72d62 runtime/race: update darwin race syso + 2025-08-06 dc54d7b607 all: remove support for windows/arm + 2025-08-06 e0a1ea431c cmd/compile: make panicBounds stack frame smaller on ppc64 + 2025-08-06 2747f925dd debug/macho: support reading imported symbols without LC_DYSYMTAB + 2025-08-06 025d36917c cmd/internal/testdir: pass -buildid to link command + 2025-08-06 f53dcb6280 cmd/internal/testdir: unify link command + 2025-08-06 a3895fe9f1 database/sql: avoid closing Rows while scan is in progress + 2025-08-06 608e9fac90 go/types, types2: flip on position tracing + 2025-08-06 72e8237cc1 cmd/compile: allow more args in StructMake folding rule + 2025-08-06 3406a617d9 internal/bytealg: vector implementation of indexbyte for riscv64 + 2025-08-06 75ea2d05c0 internal/bytealg: vector implementation of equal for riscv64 + 2025-08-05 17a8be7117 crypto/sha512: use const table for key loading on loong64 + 2025-08-05 dda9d780e2 crypto/sha256: use const table for key loading on loong64 + 2025-08-05 5defe8ebb3 internal/chacha8rand: replace WORD with instruction VMOVQ + 2025-08-05 4c7362e41c cmd/internal/obj/loong64: add new instructions ALSL{W/WU/V} for loong64 + 2025-08-05 a552737418 cmd/compile: fold negation into multiplication on loong64 + 2025-08-05 e1fd4faf91 runtime: fix godoc comment for inVDSOPage + 2025-08-05 bcd25c79aa cmd/compile: allow StructSelect [x] of interface data fields for x>0 + 2025-08-05 b0945a54b5 cmd/dist, internal/platform: mark freebsd/riscv64 broken + 2025-08-05 55d961b202 runtime: save AVX2 and AVX-512 state on asynchronous preemption + 2025-08-05 af0c4fe2ca runtime: save scalar registers off stack in amd64 async preemption + 2025-08-05 e73afaae69 internal/cpu: add AVX-512-CD and DQ, and derived "basic AVX-512" + 2025-08-05 cef381ba60 runtime: eliminate global state in mkpreempt.go + 2025-08-05 c0025d5e0b go/parser: correct comment in expectedErrors + 2025-08-05 4ee0df8c46 cmd: remove dead code + 2025-08-05 a2c45f0eb1 runtime: test VDSO symbol hash values + 2025-08-05 cd55f86b8d cmd/compile: allow multi-field structs to be stored directly in interfaces + 2025-08-05 21ab0128b6 cmd/compile: remove support for old-style bounds check calls + 2025-08-05 802d056c78 cmd/compile: move ppc64 over to new bounds check strategy + 2025-08-05 a3295df873 cmd/compile/internal/ssa: Use transitive properties for len/cap + 2025-08-05 bd082857a5 doc: fix typo in go memory model doc + 2025-08-05 2b622b05a9 cmd/compile: remove isUintXPowerOfTwo functions + 2025-08-05 72147ffa75 cmd/compile: simplify isUintXPowerOfTwo implementation + 2025-08-05 26da1199eb cmd/compile: make isUint{32,64}PowerOfTwo implementations clearer + 2025-08-05 5ab9f23977 cmd/compile, runtime: add checkptr instrumentation for unsafe.Add + 2025-08-05 fcc036f03b cmd/compile: optimise float <-> int register moves on riscv64 Change-Id: Ie94f29d9b0cc14a52a536866f5abaef27b5c52d7
2025-08-13cmd/compile: use generated loops instead of DUFFCOPY on amd64Keith Randall
This reverts commit 4e182db5fc876564a4f87a0602c58ea0ddc6e37c (CL 695196), which is itself a revert of ec9e1176c3209cf92e73e3deb2d8073fab5ea4d6 (CL 678620). So this CL is exactly the same as CL 678620, but with a regalloc fix (CL 696035) submitted first. Change-Id: I743ab32fa3aa6ef3e1b2b6751a2ef4519139057c Reviewed-on: https://go-review.googlesource.com/c/go/+/696016 Reviewed-by: David Chase <drchase@google.com> Reviewed-by: Keith Randall <khr@google.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2025-08-13cmd/compile: during regalloc, fixedreg values are always availableKeith Randall
It is ok to clobber registers that have a copy of a fixedreg value, as that value is always available in its original location later if we need it. (See 14 lines below the change.) This CL will fix the regalloc infinite loop that CL 678620 introduced. That CL requests that the stack pointer value be materialized in a non-stack-pointer register, which is atypical. That condition triggered the infinite loop that this CL fixes. The infinite loop is the compiler trying to reuse that non-stack-pointer register for something else, but then refusing to give it up because it thought that non-stack-pointer register held the last copy of the original SP value. Change-Id: Id604d0937fb9d3753ee273bf1917753d3ef2d5d7 Reviewed-on: https://go-review.googlesource.com/c/go/+/696035 Reviewed-by: David Chase <drchase@google.com> Reviewed-by: Keith Randall <khr@google.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2025-08-12Revert "cmd/compile: use generated loops instead of DUFFCOPY on amd64"Keith Randall
This reverts commit ec9e1176c3209cf92e73e3deb2d8073fab5ea4d6 (CL 678620). Reason for revert: causing regalloc to get into an infinite loop Change-Id: Ie53c58c6126804af6d6883ea4acdcfb632a172bd Reviewed-on: https://go-review.googlesource.com/c/go/+/695196 LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Dmitri Shuralyov <dmitshur@google.com> Auto-Submit: Keith Randall <khr@golang.org> Reviewed-by: Keith Randall <khr@google.com> Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
2025-08-12cmd/compile: use generated loops instead of DUFFCOPY on amd64Keith Randall
goarch: amd64 cpu: 12th Gen Intel(R) Core(TM) i7-12700 │ base │ exp │ │ sec/op │ sec/op vs base │ MemmoveKnownSize112-20 1.764n ± 0% 1.247n ± 0% -29.31% (p=0.000 n=10) MemmoveKnownSize128-20 1.891n ± 0% 1.405n ± 1% -25.72% (p=0.000 n=10) MemmoveKnownSize192-20 2.521n ± 0% 2.114n ± 3% -16.16% (p=0.000 n=10) MemmoveKnownSize248-20 4.028n ± 0% 3.877n ± 1% -3.75% (p=0.000 n=10) MemmoveKnownSize256-20 3.272n ± 0% 2.961n ± 2% -9.53% (p=0.000 n=10) MemmoveKnownSize512-20 6.733n ± 3% 5.936n ± 4% -11.83% (p=0.000 n=10) MemmoveKnownSize1024-20 13.905n ± 5% 9.798n ± 9% -29.54% (p=0.000 n=10) Change-Id: Icc01cec0d8b072300d749a5ce76f53b3725b5c65 Reviewed-on: https://go-review.googlesource.com/c/go/+/678620 Reviewed-by: Jorropo <jorropo.pgm@gmail.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Keith Randall <khr@google.com> Reviewed-by: Dmitri Shuralyov <dmitshur@google.com> Reviewed-by: Jakub Ciolek <jakub@ciolek.dev>
2025-08-05cmd: remove dead codeqiulaidongfeng
Fixes #74076 Change-Id: Icc67b3d4e342f329584433bd1250c56ae8f5a73d Reviewed-on: https://go-review.googlesource.com/c/go/+/690635 Reviewed-by: Alan Donovan <adonovan@google.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Commit-Queue: Alan Donovan <adonovan@google.com> Reviewed-by: Keith Randall <khr@golang.org> Reviewed-by: Keith Randall <khr@google.com> Auto-Submit: Alan Donovan <adonovan@google.com> Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
2025-08-04[dev.simd] all: merge master (7a1679d) into dev.simdCherry Mui
Conflicts: - src/cmd/compile/internal/amd64/ssa.go - src/cmd/compile/internal/ssa/rewriteAMD64.go - src/internal/buildcfg/exp.go - src/internal/cpu/cpu.go - src/internal/cpu/cpu_x86.go - src/internal/goexperiment/flags.go Merge List: + 2025-08-04 7a1679d7ae cmd/compile: move s390x over to new bounds check strategy + 2025-08-04 95693816a5 cmd/compile: move riscv64 over to new bounds check strategy + 2025-08-04 d7bd7773eb go/parser: remove safePos + 2025-08-04 4b6cbc377f cmd/cgo/internal/test: use (syntactic) constant for C array bound + 2025-08-03 b2960e3580 cmd/internal/obj/loong64: add {V,XV}{BITCLR/BITSET/BITREV}[I].{B/H/W/D} instructions support + 2025-08-03 abeeef1c08 cmd/compile/internal/test: fix typo in comments + 2025-08-03 d44749b65b cmd/internal/obj/loong64: add [X]VLDREPL.{B/H/W/D} instructions support + 2025-08-03 d6beda863e runtime: add reference to debugPinnerV1 + 2025-08-01 4ab1aec007 cmd/go: modload should use a read-write lock to improve concurrency + 2025-08-01 e666972a67 runtime: deduplicate Windows stdcall + 2025-08-01 ef40549786 runtime,syscall: move loadlibrary and getprocaddress to syscall + 2025-08-01 336931a4ca cmd/go: use os.Rename to move files on Windows + 2025-08-01 eef5f8d930 cmd/compile: enforce that locals are always accessed with SP base register + 2025-08-01 e071617222 cmd/compile: optimize multiplication rules on loong64 + 2025-07-31 eb7f515c4d cmd/compile: use generated loops instead of DUFFZERO on amd64 + 2025-07-31 c0ee2fd4e3 cmd/go: explicitly reject module paths "go" and "toolchain" + 2025-07-30 a4d99770c0 runtime/metrics: add cleanup and finalizer queue metrics + 2025-07-30 70a2ff7648 runtime: add cgo call benchmark + 2025-07-30 69338a335a cmd/go/internal/gover: fix ModIsPrerelease for toolchain versions + 2025-07-30 cedf63616a cmd/compile: add floating point min/max intrinsics on s390x + 2025-07-30 82a1921c3b all: remove redundant Swiss prefixes + 2025-07-30 2ae059ccaf all: remove GOEXPERIMENT=swissmap + 2025-07-30 cc571dab91 cmd/compile: deduplicate instructions when rewrite func results + 2025-07-30 2174a7936c crypto/tls: use standard chacha20-poly1305 cipher suite names + 2025-07-30 8330fb48a6 cmd/compile: move mips32 over to new bounds check strategy + 2025-07-30 9f9d7b50e8 cmd/compile: move mips64 over to new bounds check strategy + 2025-07-30 5216fd570e cmd/compile: move loong64 over to new bounds check strategy + 2025-07-30 89a0af86b8 cmd/compile: allow ops to specify clobbering input registers + 2025-07-30 5e94d72158 cmd/compile: simplify zerorange on arm64 + 2025-07-30 8cd85e602a cmd/compile: check domination of loop return in both controls + 2025-07-30 cefaed0de0 reflect: fix noswiss builder + 2025-07-30 3aa1b00081 regexp: fix compiling alternate patterns of different fold case literals + 2025-07-30 b1e933d955 cmd/compile: avoid extending when already sufficiently masked on loong64 + 2025-07-29 880ca333d7 cmd/compile: removing log2uint32 function + 2025-07-29 1513661dc3 cmd/compile: simplify logX implementations + 2025-07-29 bd94ae8903 cmd/compile: use unsigned power-of-two detector for unsigned mod + 2025-07-29 f3582fc80e cmd/compile: add unsigned power-of-two detector + 2025-07-29 f7d167fe71 internal/abi: move direct/indirect flag from Kind to TFlag + 2025-07-29 e0b07dc22e os/exec: fix incorrect expansion of "", "." and ".." in LookPath + 2025-07-29 25816d401c internal/goexperiment: delete RangeFunc goexperiment + 2025-07-29 7961bf71f8 internal/goexperiment: delete CacheProg goexperiment + 2025-07-29 e15a14c4dd sync: remove synchashtriemap GOEXPERIMENT + 2025-07-29 7dccd6395c cmd/compile: move arm32 over to new bounds check strategy + 2025-07-29 d79405a344 runtime: only deduct assist credit for arenas during GC + 2025-07-29 19a086f716 cmd/go/internal/telemetrystats: count goexperiments + 2025-07-29 aa95ab8215 image: fix formatting of godoc link + 2025-07-29 4c854b7a3e crypto/elliptic: change a variable name that have the same name as keywords + 2025-07-28 b10eb1d042 cmd/compile: simplify zerorange on amd64 + 2025-07-28 f8eae7a3c3 os/user: fix tests to pass on non-english Windows + 2025-07-28 0984264471 internal/poll: remove msg field from Windows' poll.operation + 2025-07-28 d7b4114346 internal/poll: remove rsan field from Windows' poll.operation + 2025-07-28 361b1ab41f internal/poll: remove sa field from Windows' poll.operation + 2025-07-28 9b6bd64e46 internal/poll: remove qty and flags fields from Windows' poll.operation + 2025-07-28 cd3655a824 internal/runtime/maps: fix spelling errors in comments + 2025-07-28 d5dc36af45 runtime: remove openbsd/mips64 related code + 2025-07-28 64ba72474d errors: omit redundant nil check in type assertion for Join + 2025-07-28 e151db3e06 all: omit unnecessary type conversions + 2025-07-28 4569255f8c cmd/compile: cleanup SelectN rules by indexing into args + 2025-07-28 94645d2413 cmd/compile: rewrite cmov(x, x, cond) into x + 2025-07-28 10c5cf68d4 net/http: add proper panic message + 2025-07-28 46b5839231 test/codegen: fix failing condmove wasm tests + 2025-07-28 98f301cf68 runtime,syscall: move SyscallX implementations from runtime to syscall + 2025-07-28 c7ed3a1c5a internal/runtime/syscall/windows: factor out code from runtime + 2025-07-28 e81eac19d3 hash/crc32: fix incorrect checksums with avx512+race + 2025-07-25 6fbad4be75 cmd/compile: remove no-longer-necessary call to calculateDepths + 2025-07-25 5045fdd8ff cmd/compile: fix containsUnavoidableCall computation + 2025-07-25 d28b27cd8e go/types, types2: use nil to represent incomplete explicit aliases + 2025-07-25 7b53d8d06e cmd/compile/internal/types2: add loaded state between loader calls and constraint expansion + 2025-07-25 374e3be2eb os/user: user random name for the test user account + 2025-07-25 1aa154621d runtime: rename scanobject to scanObject + 2025-07-25 41b429881a runtime: duplicate scanobject in greentea and non-greentea files + 2025-07-25 aeb256e98a cmd/compile: remove unused arg from gorecover + 2025-07-25 08376e1a9c runtime: iterate through inlinings when processing recover() + 2025-07-25 c76c3abc54 encoding/json: fix truncated Token error regression in goexperiment.jsonv2 + 2025-07-25 ebdbfccd98 encoding/json/jsontext: preserve buffer capacity in Encoder.Reset + 2025-07-25 91c4f0ccd5 reflect: avoid a bounds check in stack-constrained code + 2025-07-24 3636ced112 encoding/json: fix extra data regression under goexperiment.jsonv2 + 2025-07-24 a6eec8bdc7 encoding/json: reduce error text regressions under goexperiment.jsonv2 + 2025-07-24 0fa88dec1e time: remove redundant uint32 conversion in split + 2025-07-24 ada30b8248 internal/buildcfg: add ability to get GORISCV64 variable in GOGOARCH + 2025-07-24 6f6c6c5782 cmd/internal/obj: rip out argp adjustment for wrapper frames + 2025-07-24 7b50024330 runtime: detect successful recovers differently + 2025-07-24 7b9de668bd unicode/utf8: skip ahead during ascii runs in Valid/ValidString + 2025-07-24 076eae436e cmd/compile: move amd64 and 386 over to new bounds check strategy + 2025-07-24 f703dc5bef cmd/compile: add missing StringLen rule in prove + 2025-07-24 394d0bee8d cmd/compile: move arm64 over to new bounds check strategy + 2025-07-24 3024785b92 cmd/compile,runtime: remember idx+len for bounds check failure with less code + 2025-07-24 741a19ab41 runtime: move bounds check constants to internal/abi + 2025-07-24 ce05ad448f cmd/compile: rewrite condselects into doublings and halvings + 2025-07-24 fcd28070fe cmd/compile: add opt branchelim to rewrite some CondSelect into math + 2025-07-24 f32cf8e4b0 cmd/compile: learn transitive proofs for safe unsigned subs + 2025-07-24 d574856482 cmd/compile: learn transitive proofs for safe negative signed adds + 2025-07-24 1a72920f09 cmd/compile: learn transitive proofs for safe positive signed adds + 2025-07-24 e5f202bb60 cmd/compile: learn transitive proofs for safe unsigned adds + 2025-07-24 bd80f74bc1 cmd/compile: fold shift through AND for slice operations + 2025-07-24 5c45fe1385 internal/runtime/syscall: rename to internal/runtime/syscall/linux + 2025-07-24 592c2db868 cmd/compile: improve loopRotate to handle nested loops + 2025-07-24 dcb479c2f9 cmd/compile: optimize slice bounds checking with SUB/SUBconst comparisons + 2025-07-24 f11599b0b9 internal/poll: remove handle field from Windows' poll.operation + 2025-07-24 f7432e0230 internal/poll: remove fd field from Windows' poll.operation + 2025-07-24 e84ed38641 runtime: add benchmark for small-size memmory operation + 2025-07-24 18dbe5b941 hash/crc32: add AVX512 IEEE CRC32 calculation + 2025-07-24 c641900f72 cmd/compile: prefer base.Fatalf to panic in dwarfgen + 2025-07-24 d71d8aeafd cmd/internal/obj/s390x: add MVCLE instruction + 2025-07-24 b6cf1d94dc runtime: optimize memclr on mips64x + 2025-07-24 a8edd99479 runtime: improvement in memclr for s390x + 2025-07-24 bd04f65511 internal/runtime/exithook: fix a typo + 2025-07-24 5c8624a396 cmd/internal/goobj: make error output clear + 2025-07-24 44d73dfb4e cmd/go/internal/doc: clean up after merge with cmd/internal/doc + 2025-07-24 bd446662dd cmd/internal/doc: merge with cmd/go/internal/doc + 2025-07-24 da8b50c830 cmd/doc: delete + 2025-07-24 6669aa3b14 runtime: randomize heap base address + 2025-07-24 26338a7f69 cmd/compile: use better fatal message for staticValue1 + 2025-07-24 8587ba272e cmd/cgo: compare malloc return value to NULL instead of literal 0 + 2025-07-24 cae45167b7 go/types, types2: better error messages for certain type mismatches + 2025-07-24 2ddf542e4c cmd/compile: use ,ok return idiom for sparsemap.get + 2025-07-24 6505fcbd0a cmd/compile: use generics for sparse map + 2025-07-24 14f5eb7812 cmd/api: rerun updategolden + 2025-07-24 52b6d7f67a runtime: drop NetBSD kernel bug sysmon workaround fixed in NetBSD 9.2 + 2025-07-24 1ebebf1cc1 cmd/go: clean should respect workspaces + 2025-07-24 6536a93547 encoding/json/jsontext: preserve buffer capacity in Decoder.Reset + 2025-07-24 efc37e97c0 cmd/go: always return the cached path from go tool -n + 2025-07-23 98a031193b runtime: check TestUsingVDSO ExitError type assertion + 2025-07-23 6bb42997c8 doc/next: initialize + 2025-07-23 2696a11a97 internal/goversion: update Version to 1.26 + 2025-07-23 489868f776 cmd/link: scope test to linux & net.sendFile + 2025-07-22 71c2bf5513 cmd/compile: fix loclist for heap return vars without optimizations + 2025-07-22 c74399e7f5 net: correct comment for ListenConfig.ListenPacket + 2025-07-22 4ed9943b26 all: go fmt + 2025-07-22 1aaf7422f1 cmd/internal/objabi: remove redundant word in comment + 2025-07-21 d5ec0815e6 runtime: relax TestMemoryLimitNoGCPercent a bit + 2025-07-21 f7cc61e7d7 cmd/compile: for arm64 epilog, do SP increment with a single instruction + 2025-07-21 5dac42363b runtime: fix asan wrapper for riscv64 + 2025-07-21 e5502e0959 cmd/go: check subcommand properties + 2025-07-19 2363897932 cmd/internal/obj: enable got pcrel itype in fips140 for riscv64 + 2025-07-19 e32255fcc0 cmd/compile/internal/ssa: restrict architectures for TestDebugLines_74576 + 2025-07-18 0451816430 os: revert the use of AddCleanup to close files and roots + 2025-07-18 34b70684ba go/types: infer correct type for y in append(bytes, y...) + 2025-07-17 66536242fc cmd/compile/internal/escape: improve DWARF .debug_line numbering for literal rewriting optimizations + 2025-07-16 385000b004 runtime: fix idle time double-counting bug + 2025-07-16 f506ad2644 cmd/compile/internal/escape: speed up analyzing some functions with many closures + 2025-07-16 9c507e7942 cmd/link, runtime: on Wasm, put only function index in method table and func table + 2025-07-16 9782dcfd16 runtime: use 32-bit function index on Wasm + 2025-07-16 c876bf9346 cmd/internal/obj/wasm: use 64-bit instructions for indirect calls + 2025-07-15 b4309ece66 cmd/internal/doc: upgrade godoc pkgsite to 01b046e + 2025-07-15 75a19dbcd7 runtime: use memclrNoHeapPointers to clear inline mark bits + 2025-07-15 6d4a91c7a5 runtime: only clear inline mark bits on span alloc if necessary + 2025-07-15 0c6296ab12 runtime: have mergeInlineMarkBits also clear the inline mark bits + 2025-07-15 397d2117ec runtime: merge inline mark bits with gcmarkBits 8 bytes at a time + 2025-07-15 7dceabd3be runtime/maps: fix typo in group.go comment (instrinsified -> intrinsified) + 2025-07-15 d826bf4d74 os: remove useless error check + 2025-07-14 bb07e55aff runtime: expand GOMAXPROCS documentation + 2025-07-14 9159cd4ec6 encoding/json: decompose legacy options + 2025-07-14 c6556b8eb3 encoding/json/v2: add security section to doc + 2025-07-11 6ebb5f56d9 runtime: gofmt after CL 643897 and CL 662455 + 2025-07-11 1e48ca7020 encoding/json: remove legacy option to EscapeInvalidUTF8 + 2025-07-11 a0a99cb22b encoding/json/v2: report wrapped io.ErrUnexpectedEOF + 2025-07-11 9d04122d24 crypto/rsa: drop contradictory promise to keep PublicKey modulus secret + 2025-07-11 1ca23682dd crypto/rsa: fix documentation formatting + 2025-07-11 4bc3373c8e runtime: turn off large memmove tests under asan/msan Change-Id: I1e32d964eba770b85421efb86b305a2242f24466
2025-08-01cmd/compile: enforce that locals are always accessed with SP base registerKeith Randall
After CL 678937, we could have a situation where the value of the stack pointer is in both SP and another register. We need to make sure that regalloc picks SP when issuing a reference to local variables; the assembler expects that. Fixes #74836 Change-Id: I2ac73ece6eb44b4a78c1369f8a69e51ab9748754 Reviewed-on: https://go-review.googlesource.com/c/go/+/692395 Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com> Reviewed-by: Keith Randall <khr@google.com> Reviewed-by: Mark Freeman <mark@golang.org> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2025-07-30cmd/compile: allow ops to specify clobbering input registerskhr@golang.org
Same as clobbering fixed registers, but which register is clobbered depends on which register was assigned to the input. Add code similar to resultInArg0 processing that makes a register copy before allowing the op to clobber the last available copy of a value. (Will be used by subsequent CLs in this stack.) Change-Id: I6bad88b2cb9ac3303d960ff0fb1611727292cfc4 Reviewed-on: https://go-review.googlesource.com/c/go/+/680335 Auto-Submit: Keith Randall <khr@golang.org> Reviewed-by: Keith Randall <khr@google.com> Reviewed-by: Jorropo <jorropo.pgm@gmail.com> Reviewed-by: Mark Freeman <mark@golang.org> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2025-07-25cmd/compile: fix containsUnavoidableCall computationKeith Randall
The previous algorithm was incorrect, as it reused the dominatedByCall slice without resetting it. It also used the depth fields even though they were not yet calculated. Also, clean up a lot of the loop detector code that we never use. Always compute depths. It is cheap. Update #71868 Not really sure how to test this. As it is just an advisory bit, nothing goes really wrong when the result is incorrect. Change-Id: Ic0ae87a4d3576554831252d88b05b058ca68af41 Reviewed-on: https://go-review.googlesource.com/c/go/+/680775 LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Auto-Submit: Keith Randall <khr@golang.org> Reviewed-by: Keith Randall <khr@google.com> Reviewed-by: David Chase <drchase@google.com>
2025-07-07[dev.simd] cmd/compile: make regalloc simd aware on copyJunyang Shao
When making a temporary copy, regalloc should be aware of the SIMD-ness of the type; otherwise it might generate invalid moves. Change-Id: I722c3a0111d0990af32d84c6aaa151f1ac8c1f00 Reviewed-on: https://go-review.googlesource.com/c/go/+/685895 Reviewed-by: David Chase <drchase@google.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2025-05-19cmd/compile: don't preload registers if destination already scheduledkhr@golang.org
In regalloc, we allocate some values to registers before loop entry, so that they don't need to be loaded (from spill locations) during the loop. But it is pointless if we've already regalloc'd the loop body. Whatever restores we needed for the body are already generated. It's not clear if this code is ever useful. No tests fail if I just remove it. But at least this change is worthwhile. It doesn't help, and it actively inserts more restores than we really need (mostly because the desired register list is approximate - I have seen cases where the loads implicated here end up being dead because the restores hit the wrong registers and the edge shuffle pass knows it needs the restores in different registers). While we are here, might as well have layoutRegallocOrder return the standard layout order instead of recomputing it. Change-Id: Ia624d5121de59b6123492603695de50b272b277f Reviewed-on: https://go-review.googlesource.com/c/go/+/672735 LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Keith Randall <khr@google.com> Reviewed-by: David Chase <drchase@google.com>
2025-04-18cmd/compile: use the builtin clearapocelipes
To simplify the code a bit. Change-Id: Ia72f576de59ff161ec389a4992bb635f89783540 GitHub-Last-Rev: eaec8216be964418a085649fcca53a042f28ce1a GitHub-Pull-Request: golang/go#73411 Reviewed-on: https://go-review.googlesource.com/c/go/+/666117 LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Auto-Submit: Keith Randall <khr@golang.org> Reviewed-by: Michael Pratt <mpratt@google.com> Reviewed-by: Keith Randall <khr@google.com> Reviewed-by: Keith Randall <khr@golang.org>
2025-04-04cmd/compile: use zero register instead of specialized *zero instructionskhr@golang.org
This lets us get rid of lots of specialized opcodes for storing zero. Instead, use regular store opcodes that just happen to use the zero register as one of their inputs. Change-Id: I2902a6f9b0831cb598df45189ca6bb57221bef72 Reviewed-on: https://go-review.googlesource.com/c/go/+/633075 Reviewed-by: Cherry Mui <cherryyz@google.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Keith Randall <khr@google.com>
2025-03-27cmd/compile: remove references to *gc.Node in docsMateusz Poliwczak
ssa.Sym is only implemented by *ir.Name or *obj.LSym. Change-Id: Ia171db618abd8b438fcc2cf402f40f3fe3ec6833 Reviewed-on: https://go-review.googlesource.com/c/go/+/660995 Auto-Submit: Keith Randall <khr@golang.org> Reviewed-by: Keith Randall <khr@golang.org> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Keith Randall <khr@google.com> Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
2025-02-25cmd/compile: ensure we don't reuse temporary registerkhr@golang.org
Before this CL, we could use the same register for both a temporary register and for moving a value in the output register out of the way. Fixes #71857 Change-Id: Iefbfd9d4139136174570d8aadf8a0fb391791ea9 Reviewed-on: https://go-review.googlesource.com/c/go/+/651221 Reviewed-by: David Chase <drchase@google.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Keith Randall <khr@google.com>
2025-02-13cmd/compile: regalloc: handle desired registers of 2-output insnsKeith Randall
Particularly with 2-word load instructions, this becomes important. Classic example is: func f(p *string) string { return *p } We want the two loads to put the return values directly into the two ABI return registers. At this point in the stack, cmd/go is 1.1% smaller. Change-Id: I51fd1710238e81d15aab2bfb816d73c8e7c207b1 Reviewed-on: https://go-review.googlesource.com/c/go/+/631137 Reviewed-by: David Chase <drchase@google.com> Reviewed-by: Keith Randall <khr@google.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2024-09-03cmd: use built-in clear for maps instead of range+deleteKeith Randall
Now that we're bootstrapping from a toolchain that has the clear builtin. Update #64751 Change-Id: Ia86d96c253c9f7c66131cd02048a493047569641 Reviewed-on: https://go-review.googlesource.com/c/go/+/610237 LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Keith Randall <khr@google.com> Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org> Reviewed-by: Ian Lance Taylor <iant@google.com>
2024-09-03cmd: use built-in min/max instead of bespoke versionsKeith Randall
Now that we're bootstrapping from a toolchain that has min/max builtins. Update #64751 Change-Id: I63eedf3cca00f56f62ca092949cb2dc61db03361 Reviewed-on: https://go-review.googlesource.com/c/go/+/610355 Reviewed-by: Dmitri Shuralyov <dmitshur@google.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Keith Randall <khr@google.com> Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2024-08-26cmd/compile: regalloc: drop values that aren't used until after a callKeith Randall
No point in keeping values in registers when their next use is after a call, as we'd have to spill/restore them anyway. cmd/go is 0.1% smaller. Fixes #59297 Change-Id: I10ee761d0d23229f57de278f734c44d6a8dccd6c Reviewed-on: https://go-review.googlesource.com/c/go/+/509255 LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Michael Pratt <mpratt@google.com> Reviewed-by: Cherry Mui <cherryyz@google.com>
2024-07-23cmd/compile: make sync/atomic AND/OR operations intrinsic on amd64Keith Randall
Update #61395 Change-Id: I59a950f48efc587dfdffce00e2f4f3ab99d8df00 Reviewed-on: https://go-review.googlesource.com/c/go/+/594738 LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Keith Randall <khr@google.com> Reviewed-by: Cherry Mui <cherryyz@google.com> Reviewed-by: Nicolas Hillegeer <aktau@google.com>
2023-11-21cmd/compile: teach regalloc to rightly do nothing on loong64 in case of ↵WANG Xuerui
dynlinking This is needed before actual support for buildmode=plugin is added. Should not affect current behavior. Change-Id: I86371d7e373fd529cb8710850d7b0fbbf1eb52ca Reviewed-on: https://go-review.googlesource.com/c/go/+/480877 Reviewed-by: David Chase <drchase@google.com> Reviewed-by: Meidan Li <limeidan@loongson.cn> Reviewed-by: abner chenc <chenguoqi@loongson.cn> Reviewed-by: Cherry Mui <cherryyz@google.com> Run-TryBot: WANG Xuerui <git@xen0n.name> TryBot-Result: Gopher Robot <gobot@golang.org>
2023-09-08cmd/compile/internal/ssa: replace Frontend.Auto with Func.NewLocalMatthew Dempsky
Change-Id: I0858568d225daba1c318842dc0c9b5e652dff612 Reviewed-on: https://go-review.googlesource.com/c/go/+/526519 Auto-Submit: Matthew Dempsky <mdempsky@google.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Keith Randall <khr@google.com> Reviewed-by: Keith Randall <khr@golang.org>
2023-05-16cmd/compile: enhance tighten pass for memory valueseric fang
[This is a roll-forward of CL 458755, which was reverted due to make.bash being broken on GOAMD64=v3. But it turned out that the problem was caused by wrong bswap/load rewrite rules, and it was fixed in CL 492616.] This CL enhances the tighten pass. Previously if a value has memory arg, then the tighten pass won't move it, actually if the memory state is consistent among definition and use block, we can move the value. This CL optimizes this case. This is useful for the following situation: b1: x = load(...mem) if(...) goto b2 else b3 b2: use(x) b3: some_op_not_use_x For the micro-benchmark mentioned in #56620, the performance improvement is about 15%. There's no noticeable performance change in the go1 benchmark. Fixes #56620 Change-Id: I36ea68bed384986cd3ae81cb9e6efe84bb213adc Reviewed-on: https://go-review.googlesource.com/c/go/+/492895 Reviewed-by: Keith Randall <khr@golang.org> TryBot-Result: Gopher Robot <gobot@golang.org> Reviewed-by: Heschi Kreinick <heschi@google.com> Reviewed-by: Keith Randall <khr@google.com> Run-TryBot: Eric Fang <eric.fang@arm.com>
2023-05-03Revert "cmd/compile: enhance tighten pass for memory values"Daniel Martí
This reverts CL 458755. Reason for revert: broke make.bash on GOAMD64=v3: /workdir/go/src/crypto/sha1/sha1.go:54:35: internal compiler error: '(*digest).MarshalBinary': func (*digest).MarshalBinary, startMem[b13] has different values, old v206, new v338 goroutine 34 [running]: runtime/debug.Stack() /workdir/go/src/runtime/debug/stack.go:24 +0x9f bootstrap/cmd/compile/internal/base.FatalfAt({0x13, 0xaa0f1}, {0xc000db4440, 0x40}, {0xc0013b0000, 0x5, 0x5}) /workdir/go/src/cmd/compile/internal/base/print.go:234 +0x2d1 bootstrap/cmd/compile/internal/base.Fatalf(...) /workdir/go/src/cmd/compile/internal/base/print.go:203 bootstrap/cmd/compile/internal/ssagen.(*ssafn).Fatalf(0xc000d90000, {0x13, 0xaa0f1}, {0xcb7b91, 0x3a}, {0xc000d99bc0, 0x4, 0x4}) /workdir/go/src/cmd/compile/internal/ssagen/ssa.go:7896 +0x1f8 bootstrap/cmd/compile/internal/ssa.(*Func).Fatalf(0xc000d82340, {0xcb7b91, 0x3a}, {0xc000d99bc0, 0x4, 0x4}) /workdir/go/src/cmd/compile/internal/ssa/func.go:716 +0x342 bootstrap/cmd/compile/internal/ssa.memState(0xc000d82340, {0xc000ec6200, 0x22, 0x40}, {0xc001046000, 0x22, 0x40}) /workdir/go/src/cmd/compile/internal/ssa/tighten.go:240 +0x6c5 bootstrap/cmd/compile/internal/ssa.tighten(0xc000d82340) [...] Change-Id: Ic445fb48fe0f2c60ac67abe259b66594f1419152 Reviewed-on: https://go-review.googlesource.com/c/go/+/492335 Run-TryBot: Daniel Martí <mvdan@mvdan.cc> TryBot-Result: Gopher Robot <gobot@golang.org> Reviewed-by: Cherry Mui <cherryyz@google.com> Reviewed-by: David Chase <drchase@google.com>
generated by cgit v1.3 (git 2.53.0) at 2026-04-15 17:39:47 +0000