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For load and store on scalar values, we fold the address to the
load/stoer instruction without requiring the address having one
use. Do the same for SIMD, and remove the single use check.
Change-Id: Ie7d1bbae1b32bb8c069548197632edae36b419b9
Reviewed-on: https://go-review.googlesource.com/c/go/+/707137
Reviewed-by: Junyang Shao <shaojunyang@google.com>
Reviewed-by: David Chase <drchase@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
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The code overwrites a SIMD vector's register numbers is from an
early prototype. Now CalcStructSize and simdify take care of it.
Change-Id: I15415f796ddb04623b8cabdd2e39cb9c9593c72e
Reviewed-on: https://go-review.googlesource.com/c/go/+/707136
Reviewed-by: Junyang Shao <shaojunyang@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
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This CL tires to improve a situation pointed out by
https://github.com/golang/go/issues/73787#issuecomment-3305494947.
Change-Id: Ic23c80fe71344fc25383ab238ad6631e0f0cd22e
Reviewed-on: https://go-review.googlesource.com/c/go/+/705416
Reviewed-by: Cherry Mui <cherryyz@google.com>
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This adds methods SelectFromPair for {Int,Uint,Float}32x4
and SelectFromPairGrouped for {Int,Uint,Float}32x8.
Each of these has the signature
```
func(x T32xK.Method(a,b,c,d uint8, y T32xK) T32xK)
```
where a, b, c, d can be 0-7 and each one specifies an
element from the concatenated elements of x (0-3) and
y (4-7). When a, b, c, d are constants, 1 or 2
instructions are generated, otherwise, it's done the
harder-slower way with a function call.
Change-Id: I05eb9342e90edb9d83a4d0f5b924bcd2cfd4d12e
Reviewed-on: https://go-review.googlesource.com/c/go/+/703575
Reviewed-by: Junyang Shao <shaojunyang@google.com>
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Fixes #75617
Change-Id: Iaee7d4556db54b9999f5ba8458e7c05c11ccfc36
Reviewed-on: https://go-review.googlesource.com/c/go/+/707075
Reviewed-by: Junyang Shao <shaojunyang@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Reviewed-by: Alan Donovan <adonovan@google.com>
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Conflicts:
- src/cmd/compile/internal/types2/stdlib_test.go
- src/go/types/stdlib_test.go
Merge List:
+ 2025-09-25 d70ad4e740 sync/atomic: correct Uintptr.Or return doc
+ 2025-09-25 d7abfe4f0d runtime: acquire/release C TSAN lock when calling cgo symbolizer/tracebacker
+ 2025-09-25 393d91aea0 cmd/fix: remove all functionality
+ 2025-09-25 6dceff8bad cmd/link: handle -w flag in external linking mode
+ 2025-09-25 76d088eb74 cmd/internal/obj/riscv: remove ACFLWSP/ACFSWSP and ACFLW/ACFSW
+ 2025-09-25 5225e9dc49 doc/next: document new image/jpeg DCT in release notes
+ 2025-09-25 81a83bba21 cmd: update x/tools@4df13e3
+ 2025-09-25 6b32c613ca go/types: make typeset return an iterator
+ 2025-09-25 fbba930271 image/jpeg: replace fdct.go and idct.go with new implementation in dct.go
+ 2025-09-25 92e093467f image/jpeg: correct and test reference slowFDCT and slowIDCT
+ 2025-09-25 27c7bbc51c image/jpeg: prepare for new FDCT/IDCT implementations
+ 2025-09-24 f15cd63ec4 cmd/compile: don't rely on loop info when there are irreducible loops
+ 2025-09-24 371c1d2fcb cmd/internal/obj/riscv: add support for vector unit-stride fault-only-first load instructions
+ 2025-09-23 411c250d64 runtime: add specialized malloc functions for sizes up to 512 bytes
+ 2025-09-23 d7a38adf4c runtime: eliminate global span queue [green tea]
+ 2025-09-23 7bc1935db5 cmd/compile/internal: support new(expr)
+ 2025-09-23 eb78f13c9f doc/go_spec.html: document new(expr)
+ 2025-09-23 74cc463f9e go/token: add TestRemovedFileFileReturnsNil test
+ 2025-09-23 902dc27ae9 go/token: clear cache after grabbing the mutex in RemoveFile
+ 2025-09-23 a13d085a5b cmd/cgo: don't hardcode section name in TestNumberOfExportedFunctions
+ 2025-09-23 61bf26a9ee cmd/link: fix Macho-O X86_64_RELOC_SUBTRACTOR in internal linking
+ 2025-09-23 4b787c8c2b reflect: remove stale comment in unpackEface
+ 2025-09-23 3df27cd21a cmd/compile: fix typo in comment
+ 2025-09-23 684e8d3363 reflect: allocate memory in TypeAssert[I] only when the assertion succeeds
+ 2025-09-23 a5866ebe40 cmd/compile: prevent shapifying of pointer shape type
+ 2025-09-23 a27261c42f go/types,types2: allow new(expr)
+ 2025-09-23 e93f439ac4 runtime/cgo: retry when CreateThread fails with ERROR_ACCESS_DENIED
+ 2025-09-23 69e74b0aac runtime: deduplicate pMask resize code
+ 2025-09-23 fde10c4ce7 runtime: split gcMarkWorkAvailable into two separate conditions
+ 2025-09-23 5d040df092 runtime: use scan kernels in scanSpan [green tea]
+ 2025-09-23 7e0251bf58 runtime: don't report non-blocked goroutines as "(durable)" in stacks
+ 2025-09-23 22ac328856 cmd/link: make -w behavior consistent on Windows
Change-Id: Id76b5a30a3b6f6669437f97e3320c9bca65a1e96
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SIMD vector types are opqaue, and are expected to be operated with
methods. It is not always possible to compare the two vectors
efficiently. Instead of adding more magic to the compiler to
handle the == operator, mark the vector types uncomparable.
Change-Id: I4ca5d5e80ca7d8992dffa7b3c0386b75eb19cfa8
Reviewed-on: https://go-review.googlesource.com/c/go/+/705855
Reviewed-by: Junyang Shao <shaojunyang@google.com>
TryBot-Bypass: Cherry Mui <cherryyz@google.com>
Reviewed-by: David Chase <drchase@google.com>
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typeset(t) now returns a func equivalent to iter.Seq2[Type, Type]
for the sequence over (type, underlying) pairs in the typeset of t.
underIs was modified to take advantage of the underlying iteration
primitive, all, which computes the desired boolean conjunction
directly.
Change-Id: I3e17d5970fd2908c5dca0754db3e251bf1200af2
Reviewed-on: https://go-review.googlesource.com/c/go/+/688876
Auto-Submit: Alan Donovan <adonovan@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Robert Findley <rfindley@google.com>
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Loop information is sketchy when there are irreducible loops.
Sometimes blocks inside 2 loops can be recorded as only being part of
the outer loop. That causes tighten to move values that want to move
into such a block to move out of the loop altogether, breaking the
invariant that operations have to be scheduled after their args.
Fixes #75569
Change-Id: Idd80e6d2268094b8ae6387563081fdc1e211856a
Reviewed-on: https://go-review.googlesource.com/c/go/+/706355
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>
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This CL adds a generator function in runtime/_mkmalloc to generate
specialized mallocgc functions for sizes up throuht 512 bytes. (That's
the limit where it's possible to end up in the no header case when there
are scan bits, and where the benefits of the specialized functions
significantly diminish according to microbenchmarks). If the
specializedmalloc GOEXPERIMENT is turned on, mallocgc will call one of
these functions in the no header case.
malloc_generated.go is the generated file containing the specialized
malloc functions.
malloc_stubs.go contains the templates that will be stamped to create
the specialized malloc functions.
malloc_tables_generated contains the tables that mallocgc will use to
select the specialized function to call.
I've had to update the two stdlib_test.go files to account for the new
submodule mkmalloc is in. mprof_test accounts for the changes in the
stacks since different functions can be called in some cases.
I still need to investigate heapsampling.go.
Change-Id: Ia0f68dccdf1c6a200554ae88657cf4d686ace819
Reviewed-on: https://go-review.googlesource.com/c/go/+/665835
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Michael Matloob <matloob@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
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These are package private, and will be hidden behind
other methods in a following CL with a more general
interface.
Change-Id: Id090a5de06a0e2aed5cc60a11ff627c5e3b9c52d
Reviewed-on: https://go-review.googlesource.com/c/go/+/698577
Reviewed-by: Junyang Shao <shaojunyang@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
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This CL adds compiler support for new(expr),
a feature of go1.26 that allows the user to specify
the initial value of the variable instead of its
type.
Also, a basic test of dynamic behavior.
See CL 704737 for spec change and CL 704935 for
type-checker changes.
For #45624
Change-Id: I65d27de1ee3aabb819b57cce8ea77f3073447757
Reviewed-on: https://go-review.googlesource.com/c/go/+/705157
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Mateusz Poliwczak <mpoliwczak34@gmail.com>
Auto-Submit: Alan Donovan <adonovan@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Keith Randall <khr@google.com>
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Fix typo for omitted.
Change-Id: Ia633abe7f3d28f15f1f538425cdce9e6d9ef48c0
Reviewed-on: https://go-review.googlesource.com/c/go/+/705735
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
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Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
Auto-Submit: Keith Randall <khr@golang.org>
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CL 641955 changes the Unified IR reader to not doing shapify when
reading reshaping expression, prevent losing of the original type.
This is an oversight, as the main problem isn't about shaping during the
reshaping process itself, but about the specific case of shaping a
pointer shape type. This bug occurs when instantiating a generic
function within another generic function with a pointer shape type as
type parameter, which will convert `*[]go.shape.T` to `*go.shape.uint8`,
resulting in the loss of the original expression's type.
This commit changes Unified IR reader to avoid pointer shaping for
`*[]go.shape.T`, ensures that the original type is preserved when
processing reshaping expressions.
Updates #71184
Updates #73947
Fixes #74260
Fixes #75461
Change-Id: Icede6b73247d0d367bb485619f2dafb60ad66806
Reviewed-on: https://go-review.googlesource.com/c/go/+/704095
Auto-Submit: Cuong Manh Le <cuong.manhle.vn@gmail.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Junyang Shao <shaojunyang@google.com>
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For #45624
Change-Id: I6d77a2a1d6095cac0edc36060cbf98c72b749404
Reviewed-on: https://go-review.googlesource.com/c/go/+/704935
Auto-Submit: Alan Donovan <adonovan@google.com>
Reviewed-by: Robert Findley <rfindley@google.com>
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this will be subsumed by pending changes in local slice
representation, however this was easy and works well.
Change-Id: I5b6eb10d257f04f906be7a8a6f2b6833992a39e8
Reviewed-on: https://go-review.googlesource.com/c/go/+/704876
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>
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Currently, we remove stores to local variables that are not read.
We don't do that for arguments. But arguments and locals are
essentially the same. Arguments are passed by value, and are not
expected to be read in the caller's frame. So we can remove the
writes to them as well. One exception is the cgo_unsafe_arg
directive, which makes all the arguments effectively address-taken.
cgo_unsafe_arg implies ABI0, so we just skip ABI0 functions'
arguments.
Change-Id: I8999fc50da6a87f22c1ec23e9a0c15483b6f7df8
Reviewed-on: https://go-review.googlesource.com/c/go/+/705815
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
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Conflicts:
- src/internal/buildcfg/exp.go
Merge List:
+ 2025-09-22 9b2d39b75b cmd/compile/internal/ssa: match style and formatting
+ 2025-09-22 e23edf5e55 runtime: don't re-read metrics before check in TestReadMetricsSched
+ 2025-09-22 177cd8d763 log/slog: use a pooled json encoder
+ 2025-09-22 2353c15785 cmd/cgo/internal/test: skip TestMultipleAssign when using UCRT on Windows
+ 2025-09-22 32dfd69282 cmd/dist: disable FIPS 140-3 mode when testing maphash with purego
+ 2025-09-19 7f6ff5ec3e cmd/compile: fix doc word
+ 2025-09-19 9693b94be0 runtime: include stderr when objdump fails
+ 2025-09-19 8616981ce6 log/slog: optimize slog Level.String() to avoid fmt.Sprintf
+ 2025-09-19 b8af744360 testing: fix example for unexported identifier
+ 2025-09-19 51dc5bfe6c Revert "cmd/go: disable cgo by default if CC unset and DefaultCC doesn't exist"
+ 2025-09-19 ee7bf06cb3 time: improve ParseDuration performance for invalid input
+ 2025-09-19 f9e61a9a32 cmd/compile: duplicate nil check to two branches of write barrier
+ 2025-09-18 3cf1aaf8b9 runtime: use futexes with 64-bit time on Linux
+ 2025-09-18 0ab038af62 cmd/compile/internal/abi: use clear built-in
+ 2025-09-18 00bf24fdca bytes: use clear in test
+ 2025-09-18 f9701d21d2 crypto: use clear built-in
+ 2025-09-18 a58afe44fa net: fix testHookCanceledDial race
+ 2025-09-18 3203a5da29 net/http: avoid connCount underflow race
+ 2025-09-18 8ca209ec39 context: don't return a non-nil from Err before Done is closed
+ 2025-09-18 3032894e04 runtime: make explicit nil check in heapSetTypeSmallHeader
+ 2025-09-17 ef05b66d61 cmd/internal/obj/riscv: add support for Zicond instructions
+ 2025-09-17 78ef487a6f cmd/compile: fix the issue of shift amount exceeding the valid range
+ 2025-09-17 77aac7bb75 runtime: don't enable heap randomization if MSAN or ASAN is enabled
+ 2025-09-17 465b85eb76 runtime: fix CheckScavengedBitsCleared with randomized heap base
+ 2025-09-17 909704b85e encoding/json/v2: fix typo in comment
+ 2025-09-17 3db5979e8c testing: use reflect.TypeAssert and reflect.TypeFor
+ 2025-09-17 6a8dbbecbf path/filepath: fix EvalSymlinks to return ENOTDIR on plan9
+ 2025-09-17 bffe7ad9f1 go/parser: Add TestBothLineAndLeadComment
+ 2025-09-17 02a888e820 go/ast: document that (*ast.File).Comments is sorted by position
+ 2025-09-16 594deca981 cmd/link: simplify PE relocations mapping
+ 2025-09-16 9df1a289ac go/parser: simplify expectSemi
+ 2025-09-16 72ba117bda internal/buildcfg: enable randomizedHeapBase64 by default
+ 2025-09-16 796ea3bc2e os/user: align test file name and build tags
+ 2025-09-16 a69395eab2 runtime/_mkmalloc: add a copy of cloneNode
+ 2025-09-16 cbdad4fc3c cmd/go: check pattern for utf8 validity before call regexp.MustCompile
+ 2025-09-16 c2d85eb999 cmd/go: disable cgo by default if CC unset and DefaultCC doesn't exist
+ 2025-09-16 ac82fe68aa bytes,strings: remove reference to non-existent SplitFunc
+ 2025-09-16 0b26678db2 cmd/compile: fix mips zerorange implementation
+ 2025-09-16 e2cfc1eb3a cmd/internal/obj/riscv: improve handling of float point moves
+ 2025-09-16 281c632e6e crypto/x509/internal/macos: standardize package name
+ 2025-09-16 61dc7fe30d iter: document that calling yield after terminated range loop causes runtime panic
Change-Id: Ic06019efc855913632003f41eb10c746b3410b0a
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This CL fixes a condition for the previous fix CL 704056.
Change-Id: I1f1f8c6f72870403cb3dff14755c43385dc0c933
Reviewed-on: https://go-review.googlesource.com/c/go/+/705499
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Reviewed-by: Cherry Mui <cherryyz@google.com>
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Format final sentence in paragraph and make sentence case to match style.
Change-Id: I991729257fea202509f59a928b943e10ef1761f4
GitHub-Last-Rev: 770bbf5e7507c0a296f28cb667f0b022a1df846a
GitHub-Pull-Request: golang/go#75550
Reviewed-on: https://go-review.googlesource.com/c/go/+/705519
Reviewed-by: Jorropo <jorropo.pgm@gmail.com>
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
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calculations
the example comes up in chunked reslicing, e.g. A[i:] where i
has a relationship with len(A)-K.
Change-Id: Ib97dede6cfc7bbbd27b4f384988f741760686604
Reviewed-on: https://go-review.googlesource.com/c/go/+/704875
Reviewed-by: Keith Randall <khr@google.com>
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"using" -> "uses"
Change-Id: I2bcefc6128dafd4fd05d7ce291b1afb28465a25c
GitHub-Last-Rev: bf9006eeb65c94a4e492be29f530f511a3d6ffc1
GitHub-Pull-Request: golang/go#75548
Reviewed-on: https://go-review.googlesource.com/c/go/+/705515
Reviewed-by: Keith Randall <khr@google.com>
Auto-Submit: Keith Randall <khr@golang.org>
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If a SIMD value is passed in a register, make sure to spill/reload
with the right width.
Change-Id: I360e7b7a030bcd87c96e4c04ad42d87e7fd1bac6
Reviewed-on: https://go-review.googlesource.com/c/go/+/705415
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this helps SIMD, but also helps plain old Go
Change-Id: Idcdacd54b6776f5c32b497bc94485052611cfa8d
Reviewed-on: https://go-review.googlesource.com/c/go/+/704756
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Currently, for a write of a pointer (e.g. *p = x where x is a
pointer), we generate an explicit nil check of p, despite that the
store instruction may have the same faulting behavior as the nil
check. This is because the write needs a write barrier, which
creates a control flow, which prevents the nil check being removed
as it is in a differnt block as the actual store.
This CL duplicates the nil check to two branches, so it is likely
that they will be followed by the actual store and the write
barrier load, which may have the same faulting behavior, so they
can be removed.
Change-Id: Ied9480de5dd6a8fcbd5affc5f6e029944943cc07
Reviewed-on: https://go-review.googlesource.com/c/go/+/705156
Reviewed-by: Keith Randall <khr@golang.org>
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Replace for loop with clear, available since Go 1.21.
Change-Id: I949da08b2a11845cc8a02b2639af78835e316970
Reviewed-on: https://go-review.googlesource.com/c/go/+/704879
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Reviewed-by: Michael Knyszek <mknyszek@google.com>
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This was for my early prototype, not used in real code.
Change-Id: I154a027ae2335d12e44625c0e3ce42a7b7d84976
Reviewed-on: https://go-review.googlesource.com/c/go/+/705335
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Feeding an unconverted uint8 to the jumptable can cause
problems either in constant propagation or later at runtime,
depending on details of the input code.
Change-Id: I5fa2299a77a73172349a165f773cf9d1198212bc
Reviewed-on: https://go-review.googlesource.com/c/go/+/702755
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Change-Id: Ica2d5ee48082c69e86b12b519ba8df7a2556392f
Reviewed-on: https://go-review.googlesource.com/c/go/+/704355
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Change-Id: Ia5103100eca2747fd10917ee2f32e3403e68e844
Reviewed-on: https://go-review.googlesource.com/c/go/+/702175
Reviewed-by: Cherry Mui <cherryyz@google.com>
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This CL fixes an issue raised by contributor dominikh@.
Change-Id: I941b330a6ba6f6c120c69951ddd24933f2f0b3ec
Reviewed-on: https://go-review.googlesource.com/c/go/+/704056
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This CL adds rewrite rules for ops with const imm8 that takes a load to
its memory form.
Change-Id: I74d0df48715ab48b88b04c8e1bfb3c6b8e528aeb
Reviewed-on: https://go-review.googlesource.com/c/go/+/704635
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The previous CL left a bug in the xed parser so that the generator can
generate rules rewriting an AVX instruction to AVX512 instruction.
This CL fixes that.
Change-Id: I0df7e7dc6c936ce7add24a757ce7f44a15917fef
Reviewed-on: https://go-review.googlesource.com/c/go/+/703399
Reviewed-by: David Chase <drchase@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
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Fixes #75479
Change-Id: I362d3e49090e94f91a840dd5a475978b59222a00
Reviewed-on: https://go-review.googlesource.com/c/go/+/704135
Reviewed-by: Mark Freeman <markfreeman@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Meidan Li <limeidan@loongson.cn>
Reviewed-by: abner chenc <chenguoqi@loongson.cn>
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A +8 was missed when simplifying this code in CL 700936.
Fixes #75477
Change-Id: Ic7b83322dc1373432b44f0b63607141195220380
Reviewed-on: https://go-review.googlesource.com/c/go/+/703937
Reviewed-by: Keith Randall <khr@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Julian Zhu <jz531210@gmail.com>
Auto-Submit: Keith Randall <khr@google.com>
Reviewed-by: Tianon Gravi <admwiggin@gmail.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
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Conflicts:
- src/internal/goexperiment/flags.go
Merge List:
+ 2025-09-15 ca0e03560d cmd/link: remove support for windows/arm relocations
+ 2025-09-15 17a0fabc43 cmd/link: remove support for darwin/386 relocations
+ 2025-09-15 eb7c67fdc9 cmd/internal/obj/loong64: use the MOVVP instruction to optimize prologue
+ 2025-09-15 6b8d507508 cmd/internal/obj/riscv: implement vector segment load/store instructions
+ 2025-09-15 7ddbf4d820 cmd/asm: add double precision comparision testcases for riscv64
+ 2025-09-15 c39abe0658 runtime: fix TestSehUnwind
+ 2025-09-15 e3ed0fbe6a all: replace strings.Split with strings.SplitSeq
+ 2025-09-15 10bfddc91d all: remove redundant words in comment
+ 2025-09-15 2469e92d8c cmd/compile: combine doubling with shift on riscv64
+ 2025-09-15 aa83aee7de net/http: clarify panic conditions in Handle, HandleFunc, AddInsecureBypassPattern
+ 2025-09-15 b9e2977f1d crypto/internal/cryptotest: use linux-amd64_avx512 builder for SHA-NI
+ 2025-09-15 8105d0ccc2 cmd/go,crypto/internal/fips140: prevent using FIPS 140-3 mode with purego tag
+ 2025-09-15 7f70ca8726 crypto/internal/cryptotest: add MustSupportFIPS140
+ 2025-09-15 9e71d8a9f7 cmd/internal/testdir: re-enable default all codegen flag on linux-amd64
+ 2025-09-15 004858ccdd all: replace os.Getenv("GO_BUILDER_NAME") with testenv.Builder in tests
+ 2025-09-15 dbde15800c cmd: vendor x/tools@9fccddc
+ 2025-09-15 8ace10dad2 os: add (*Process).WithHandle
+ 2025-09-15 3573227fe3 os: add and use errProcessReleased
+ 2025-09-15 68c6a73380 internal/syscall/unix: add KernelVersionGE
+ 2025-09-15 e603e9834e cmd/link: support race mode with MSVC clang
+ 2025-09-15 e5ee1f2600 test/codegen: check zerobase for newobject on 0-sized types
+ 2025-09-15 77b93d41d5 net/http: add comments for transport gzip reader
+ 2025-09-15 30d510ca2d cmd/compile,cmd/gofmt: use reflect.TypeFor
+ 2025-09-15 8320fe8f0e runtime: deduplicate syscall assembly for darwin
+ 2025-09-14 080882a928 net: use context.AfterFunc in connect
+ 2025-09-12 ac803b5949 cmd/go/internal/work: copy vet tool's stdout to our stdout
+ 2025-09-12 889e71c2ac runtime: move Windows types and consts to internal/runtime/syscall/windows
+ 2025-09-12 cc8a6780ac vendor: update x/tools to 3adf0e9, and other repos
+ 2025-09-12 911455fe18 cmd/link: don't count tbss section in TestFlagD
+ 2025-09-12 f1fd13016a cmd/compile: optimize abi.Type.GCData loads
+ 2025-09-12 dc960d0bfe cmd/compile, reflect: further allow inlining of TypeFor
+ 2025-09-12 7acb0d0446 runtime: fix syscall9 on darwin/arm64
+ 2025-09-12 60c1ee9183 internal/goexperiment: add a sizespecializedmalloc goexperiment setting
+ 2025-09-12 c70713da82 cmd/link: support MSVC clang
+ 2025-09-12 9271bbbb80 internal/testenv: update Builder docs with LUCI builder names
+ 2025-09-12 a4e25c3d65 net,internal/poll: skip TestAllocs when race is enabled on Windows
+ 2025-09-12 dd8276657f cmd/asm, cmd/internal/obj: add riscv64 generic CSR ops
+ 2025-09-11 f37d75472d runtime: move mksizeclasses.go to runtime/_mkmalloc
+ 2025-09-11 73676e3223 cmd/go: run cgo and cgo compiles in their own actions
+ 2025-09-11 0e1b98993e testing: exit B.Loop early upon saturation
+ 2025-09-11 84e9ab3984 cmd/go/internal/work: remove deps[1]="fmt" vet hack
Change-Id: I1424228bcd9291c9ff29f6ae843d5b90652f237e
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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>
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In Go 1.25+, strings.SplitSeq offers better
performance. Here are the benchmark results comparing
strings.Split and strings.SplitSeq in a for-loop, with the
benchmark code located in src/strings/iter_test.go:
goos: darwin
goarch: amd64
pkg: cmd/go/internal/auth
cpu: Intel(R) Core(TM) i7-8569U CPU @ 2.80GHz
│ old.txt │ new.txt │
│ sec/op │ sec/op vs base │
ParseGitAuth/standard-8 281.4n ± 1% 218.0n ± 11% -22.54% (p=0.000 n=10)
ParseGitAuth/with_url-8 549.1n ± 1% 480.5n ± 13% -12.48% (p=0.002 n=10)
ParseGitAuth/minimal-8 235.4n ± 1% 197.3n ± 7% -16.20% (p=0.000 n=10)
ParseGitAuth/complex-8 797.6n ± 2% 805.2n ± 4% ~ (p=0.481 n=10)
ParseGitAuth/empty-8 87.48n ± 3% 63.25n ± 6% -27.71% (p=0.000 n=10)
ParseGitAuth/malformed-8 228.8n ± 1% 171.2n ± 3% -25.17% (p=0.000 n=10)
geomean 288.9n 237.7n -17.72%
│ old.txt │ new.txt │
│ B/op │ B/op vs base │
ParseGitAuth/standard-8 192.00 ± 0% 96.00 ± 0% -50.00% (p=0.000 n=10)
ParseGitAuth/with_url-8 400.0 ± 0% 288.0 ± 0% -28.00% (p=0.000 n=10)
ParseGitAuth/minimal-8 144.00 ± 0% 80.00 ± 0% -44.44% (p=0.000 n=10)
ParseGitAuth/complex-8 528.0 ± 0% 400.0 ± 0% -24.24% (p=0.000 n=10)
ParseGitAuth/empty-8 32.00 ± 0% 16.00 ± 0% -50.00% (p=0.000 n=10)
ParseGitAuth/malformed-8 176.00 ± 0% 80.00 ± 0% -54.55% (p=0.000 n=10)
geomean 179.0 102.1 -42.96%
│ old.txt │ new.txt │
│ allocs/op │ allocs/op vs base │
ParseGitAuth/standard-8 3.000 ± 0% 2.000 ± 0% -33.33% (p=0.000 n=10)
ParseGitAuth/with_url-8 4.000 ± 0% 3.000 ± 0% -25.00% (p=0.000 n=10)
ParseGitAuth/minimal-8 3.000 ± 0% 2.000 ± 0% -33.33% (p=0.000 n=10)
ParseGitAuth/complex-8 4.000 ± 0% 3.000 ± 0% -25.00% (p=0.000 n=10)
ParseGitAuth/empty-8 2.000 ± 0% 1.000 ± 0% -50.00% (p=0.000 n=10)
ParseGitAuth/malformed-8 3.000 ± 0% 2.000 ± 0% -33.33% (p=0.000 n=10)
geomean 3.086 2.040 -33.91%
Updates #69315.
Change-Id: Id0219edea45d9658d527b863162ebe917e7821d9
GitHub-Last-Rev: 392b315e122f2c9ef8703ca2dbce8f82ec198556
GitHub-Pull-Request: golang/go#75259
Reviewed-on: https://go-review.googlesource.com/c/go/+/701015
Reviewed-by: Keith Randall <khr@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Emmanuel Odeke <emmanuel@orijtech.com>
Reviewed-by: Keith Randall <khr@google.com>
Auto-Submit: Emmanuel Odeke <emmanuel@orijtech.com>
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Change-Id: I4bee2770fedf97e35b5a5b9187a8ba3c41f9ec2e
Reviewed-on: https://go-review.googlesource.com/c/go/+/702697
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Joel Sing <joel@sing.id.au>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Keith Randall <khr@google.com>
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It turns out that ".Masked" is implemented by VPANDQ *and* VPANDD.
The shape of bitwise AND doesn't matter, the correctness of the rules is
guaranteed by the way the mask is generated.
This CL fix the holes in the peephole rules.
Change-Id: I2d15c4d17afed6fdbb2f3905a51b2c5c2f673348
Reviewed-on: https://go-review.googlesource.com/c/go/+/703257
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: David Chase <drchase@google.com>
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Use "reflect.TypeFor" to simplify the code.
Updates #60088
Change-Id: I93db6cbd4f02813d9a81f5d02996db8128cb81a9
GitHub-Last-Rev: 2aee64dac6e13ef869aa73f2abf236650e1c1757
GitHub-Pull-Request: golang/go#75349
Reviewed-on: https://go-review.googlesource.com/c/go/+/701676
Reviewed-by: Mark Freeman <markfreeman@google.com>
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>
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This CL adds the load + const imm8 variants ofr many instructions.
Change-Id: I46116906077e33eabccc111be6d16019002f3474
Reviewed-on: https://go-review.googlesource.com/c/go/+/703395
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
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Some convenient peepholes, might not have big impact on performances.
Change-Id: I25574dba95fcf1d5fda14472175e556737b51584
Reviewed-on: https://go-review.googlesource.com/c/go/+/702997
Reviewed-by: Cherry Mui <cherryyz@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
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This fires in just one place; stkframe.go's stkobjinit. But, it does
make the struct literal entirely constants.
Change-Id: Ice76cb3cddd97adee011fdaab40597839da2e89f
Reviewed-on: https://go-review.googlesource.com/c/go/+/701300
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: Mark Freeman <markfreeman@google.com>
Auto-Submit: Michael Pratt <mpratt@google.com>
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Previous CLs optimized direct use of abi.Type, but reflect.Type is
indirected, so was not benefiting.
For TypeFor, we can use toRType directly without a nil check because the
types are statically known.
Normally, I'd think SSA would remove the nil check, but due to some
oddity (specifically, late fuse being required to remove the nil check,
but opt doesn't run that late) means that the nil check persists and
gets in the way.
Manually writing the code in this instance seems to fix the problem.
It also exposed another problem; depending on the ordering, writeType
could get to a type symbol before SSA, thereby preventing Extra from
being created on the symbol for later lookups that don't go through
TypeLinksym directly. In writeType, for non-shape types, call
TypeLinksym to ensure that the type is set up for later callers. That
change itself passed toolstash -cmp.
All up, this stack put through compilecmp shows a lot of improvement in
various reflect-using packages, and reflect itself. It is too big to fit
in the commit message but here's some info:
compilecmp master -> HEAD
master (d767064170): cmd/compile: mark abi.PtrType.Elem sym as used
HEAD (846a94c568): cmd/compile, reflect: further allow inlining of TypeFor
file before after Δ %
addr2line 3735911 3735391 -520 -0.014%
asm 6382235 6382091 -144 -0.002%
buildid 3608568 3608360 -208 -0.006%
cgo 5951816 5951480 -336 -0.006%
compile 28362080 28339772 -22308 -0.079%
cover 6668686 6661414 -7272 -0.109%
dist 4311961 4311425 -536 -0.012%
fix 3771706 3771474 -232 -0.006%
link 8686073 8684993 -1080 -0.012%
nm 3715923 3715459 -464 -0.012%
objdump 6074366 6073774 -592 -0.010%
pack 3025653 3025277 -376 -0.012%
pprof 18269485 18261653 -7832 -0.043%
test2json 3442726 3438390 -4336 -0.126%
trace 16984831 16981767 -3064 -0.018%
vet 10701931 10696355 -5576 -0.052%
total 133693951 133639075 -54876 -0.041%
runtime
runtime.stkobjinit 240 -> 165 (-31.25%)
runtime [cmd/compile]
runtime.stkobjinit 240 -> 165 (-31.25%)
reflect
reflect.Value.Seq2.func3 309 -> 245 (-20.71%)
reflect.Value.Seq2.func1.1 281 -> 198 (-29.54%)
reflect.Value.Seq.func1.1 242 -> 165 (-31.82%)
reflect.Value.Seq2.func2 360 -> 285 (-20.83%)
reflect.Value.Seq.func4 281 -> 239 (-14.95%)
reflect.Value.Seq2.func4 399 -> 284 (-28.82%)
reflect.Value.Seq.func2 271 -> 230 (-15.13%)
reflect.TypeFor[go.shape.uint64] 33 -> 18 (-45.45%)
reflect.Value.Seq.func3 219 -> 178 (-18.72%)
reflect [cmd/compile]
reflect.Value.Seq2.func2 360 -> 285 (-20.83%)
reflect.Value.Seq.func4 281 -> 239 (-14.95%)
reflect.Value.Seq.func2 271 -> 230 (-15.13%)
reflect.Value.Seq.func1.1 242 -> 165 (-31.82%)
reflect.Value.Seq2.func1.1 281 -> 198 (-29.54%)
reflect.Value.Seq2.func3 309 -> 245 (-20.71%)
reflect.Value.Seq.func3 219 -> 178 (-18.72%)
reflect.TypeFor[go.shape.uint64] 33 -> 18 (-45.45%)
reflect.Value.Seq2.func4 399 -> 284 (-28.82%)
fmt
fmt.(*pp).fmtBytes 1723 -> 1691 (-1.86%)
database/sql/driver
reflect.TypeFor[go.shape.interface 33 -> 18 (-45.45%)
database/sql/driver.init 72 -> 57 (-20.83%)
Change-Id: I9eb750cf0b7ebf532589f939431feb0a899e42ff
Reviewed-on: https://go-review.googlesource.com/c/go/+/701301
Reviewed-by: Mark Freeman <markfreeman@google.com>
Reviewed-by: Keith Randall <khr@google.com>
Auto-Submit: Michael Pratt <mpratt@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
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Change-Id: I442da7964ca8b4b9012ed206ccb92f5e68b0d42b
Reviewed-on: https://go-review.googlesource.com/c/go/+/701695
Reviewed-by: Cherry Mui <cherryyz@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
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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
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This CL adds the machine ops for memory-op and also their prog writing
logic.
This CL also fixes a bug in the XED parser. Previously the
merge of machine ops is not checking the CPU feature, so some AVX
instruction might have their "memFeatures" field set incorrectly.
However since that field is not used until this CL, putting the fix here
should be ok.
Change-Id: I91031cbbf63453257473dd1d2ff47f7496d1a01d
Reviewed-on: https://go-review.googlesource.com/c/go/+/701198
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: David Chase <drchase@google.com>
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Fixes #75249
Change-Id: Ifd61bf5341f23ce2c9735e607e00d987489caacf
Reviewed-on: https://go-review.googlesource.com/c/go/+/701295
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Alexander Musman <alexander.musman@gmail.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
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Change-Id: Iece109dfbdc98d436b845148612f4943598697fe
Reviewed-on: https://go-review.googlesource.com/c/go/+/697697
Reviewed-by: Robert Findley <rfindley@google.com>
Commit-Queue: Mark Freeman <markfreeman@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
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