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2024-03-25runtime: migrate internal/atomic to internal/runtimeAndy Pan
For #65355 Change-Id: I65dd090fb99de9b231af2112c5ccb0eb635db2be Reviewed-on: https://go-review.googlesource.com/c/go/+/560155 Reviewed-by: David Chase <drchase@google.com> Reviewed-by: Michael Pratt <mpratt@google.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Ibrahim Bazoka <ibrahimbazoka729@gmail.com> Auto-Submit: Emmanuel Odeke <emmanuel@orijtech.com>
2024-03-21cmd/compile,cmd/go,cmd/internal,runtime: remove dynamic checks for atomics ↵Andrey Bokhanko
for ARM64 targets that support LSE Remove dynamic checks for atomic instructions for ARM64 targets that support LSE extension. For #66131 Change-Id: I0ec1b183a3f4ea4c8a537430646e6bc4b4f64271 Reviewed-on: https://go-review.googlesource.com/c/go/+/569536 Reviewed-by: Mauri de Souza Meneguzzo <mauri870@gmail.com> Reviewed-by: Cherry Mui <cherryyz@google.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Fannie Zhang <Fannie.Zhang@arm.com> Reviewed-by: Shu-Chun Weng <scw@google.com>
2023-11-07runtime/internal/atomic: add arm/arm64 operators for And/OrMauri de Souza Meneguzzo
This CL continues adding support for And/Or primitives to more architectures, this time for arm/arm64. For #61395 Change-Id: Icc44ea65884c825698a345299d8f9511392aceb6 GitHub-Last-Rev: 8267665a0348faa0a10ac63b18909a1b13f9971d GitHub-Pull-Request: golang/go#62674 Reviewed-on: https://go-review.googlesource.com/c/go/+/528797 Reviewed-by: Matthew Dempsky <mdempsky@google.com> Reviewed-by: Keith Randall <khr@golang.org> Run-TryBot: Mauri de Souza Meneguzzo <mauri870@gmail.com> TryBot-Result: Gopher Robot <gobot@golang.org> Reviewed-by: Keith Randall <khr@google.com>
2021-06-28runtime/internal/atomic: drop Cas64 pointer indirection in commentsMia Zhu
Change-Id: Ieff0065cbd81e045594ce12e10338b0666816d70 GitHub-Last-Rev: d842f5cb3e5d75f87957c068f6accc9d4a4ac224 GitHub-Pull-Request: golang/go#46949 Reviewed-on: https://go-review.googlesource.com/c/go/+/331309 Trust: Keith Randall <khr@golang.org> Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
2021-05-12runtime/internal/atomic: add LSE atomics instructions to arm64Jonathan Swinney
As a follow up to an earlier change[1] to add ARMv8+LSE instructions in the compiler generated atomic intrinsics, make the same change in the runtime library. Since not all ARMv8 systems support LSE instructions, they are protected by a feature-flag branch. [1]: golang.org/cl/234217 commit: ecc3f5112eba Change-Id: I0e2fb22e78d5eddb6547863667a8865946679a00 Reviewed-on: https://go-review.googlesource.com/c/go/+/310591 Reviewed-by: Cherry Mui <cherryyz@google.com> Run-TryBot: Cherry Mui <cherryyz@google.com> TryBot-Result: Go Bot <gobot@golang.org> Trust: Heschi Kreinick <heschi@google.com>
2021-04-05runtime: extend internal atomics to comply with sync/atomicRuslan Andreev
The CV add changes according to TODO in Go source-code. Internal atomic set does not comply with sync/atomic library and has shortage operations for signed integers. This patch extend internal atomic set by Int32 and Int64 operations. It's implemented new aliases and asm versions of operations. As a result Cas64 was replaced by Casint64 in findRunnableGCWorker without type casting. Another purpose is unified structure of internal atomics' source code. Before, assembly impementations for different archs were in different files. For example, filename for AMD64 was asm_amd64.s, but filename for RISC-V was atomic_riscv64.s. Some arches have both files without any meaning. So, assembly files were merged and renamed to atomic_{$ARCH}.s filenames. Change-Id: I29a05a7cbf5f4a9cc146e8315536c038af545677 Reviewed-on: https://go-review.googlesource.com/c/go/+/289152 Reviewed-by: Keith Randall <khr@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com> Run-TryBot: Keith Randall <khr@golang.org> TryBot-Result: Go Bot <gobot@golang.org>
2020-10-23runtime/internal/atomic: add 32-bit And/OrMichael Pratt
These will be used in a following CL to perform larger bit clear and bit set than And8/Or8. Change-Id: I60f7b1099e29b69eb64add77564faee862880a8d Reviewed-on: https://go-review.googlesource.com/c/go/+/260977 Run-TryBot: Michael Pratt <mpratt@google.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com> Trust: Michael Pratt <mpratt@google.com>
2020-10-21cmd/compiler,cmd/go,sync: add internal {LoadAcq,StoreRel}64 on ppc64Paul E. Murphy
Add an internal atomic intrinsic for load with acquire semantics (extending LoadAcq to 64b) and add LoadAcquintptr for internal use within the sync package. For other arches, this remaps to the appropriate atomic.Load{,64} intrinsic which should not alter code generation. Similarly, add StoreRel{uintptr,64} for consistency, and inline. Finally, add an exception to allow sync to directly use the runtime/internal/atomic package which avoids more convoluted workarounds (contributed by Lynn Boger). In an extreme example, sync.(*Pool).pin consumes 20% of wall time during fmt tests. This is reduced to 5% on ppc64le/power9. From the fmt benchmarks on ppc64le: name old time/op new time/op delta SprintfPadding 468ns ± 0% 451ns ± 0% -3.63% SprintfEmpty 73.3ns ± 0% 51.9ns ± 0% -29.20% SprintfString 135ns ± 0% 122ns ± 0% -9.63% SprintfTruncateString 232ns ± 0% 214ns ± 0% -7.76% SprintfTruncateBytes 216ns ± 0% 202ns ± 0% -6.48% SprintfSlowParsingPath 162ns ± 0% 142ns ± 0% -12.35% SprintfQuoteString 1.00µs ± 0% 0.99µs ± 0% -1.39% SprintfInt 117ns ± 0% 104ns ± 0% -11.11% SprintfIntInt 190ns ± 0% 175ns ± 0% -7.89% SprintfPrefixedInt 232ns ± 0% 212ns ± 0% -8.62% SprintfFloat 270ns ± 0% 255ns ± 0% -5.56% SprintfComplex 1.01µs ± 0% 0.99µs ± 0% -1.68% SprintfBoolean 127ns ± 0% 111ns ± 0% -12.60% SprintfHexString 220ns ± 0% 198ns ± 0% -10.00% SprintfHexBytes 261ns ± 0% 252ns ± 0% -3.45% SprintfBytes 600ns ± 0% 590ns ± 0% -1.67% SprintfStringer 684ns ± 0% 658ns ± 0% -3.80% SprintfStructure 2.57µs ± 0% 2.57µs ± 0% -0.12% ManyArgs 669ns ± 0% 646ns ± 0% -3.44% FprintInt 140ns ± 0% 136ns ± 0% -2.86% FprintfBytes 184ns ± 0% 181ns ± 0% -1.63% FprintIntNoAlloc 140ns ± 0% 136ns ± 0% -2.86% ScanInts 929µs ± 0% 921µs ± 0% -0.79% ScanRecursiveInt 122ms ± 0% 121ms ± 0% -0.11% ScanRecursiveIntReaderWrapper 122ms ± 0% 122ms ± 0% -0.18% Change-Id: I4d66780261b57b06ef600229e475462e7313f0d6 Reviewed-on: https://go-review.googlesource.com/c/go/+/253748 Run-TryBot: Lynn Boger <laboger@linux.vnet.ibm.com> Reviewed-by: Lynn Boger <laboger@linux.vnet.ibm.com> Reviewed-by: Keith Randall <khr@golang.org> Trust: Lynn Boger <laboger@linux.vnet.ibm.com> TryBot-Result: Go Bot <gobot@golang.org>
2020-04-03runtime: eliminate redundant load in Xchg and Xadd on arm64Xiangdong Ji
Loading arguments of Xchg(64) and Xadd(64) functions to registers could be done only once. Change-Id: Iaf0a695ec9c6a221dfa755855edb68c476978a5b Reviewed-on: https://go-review.googlesource.com/c/go/+/227001 Reviewed-by: Keith Randall <khr@golang.org> Run-TryBot: Keith Randall <khr@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
2019-10-29runtime/internal/atomic: add Store8Austin Clements
We already have Load8, And8, and Or8. For #10958, #24543, but makes sense on its own. Change-Id: I478529fc643edc57efdeccaae413c99edd19b2eb Reviewed-on: https://go-review.googlesource.com/c/go/+/203283 Run-TryBot: Austin Clements <austin@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com>
2019-05-03cmd/compile,runtime/internal/atomic: add Load8Austin Clements
Change-Id: Id52a5730cf9207ee7ccebac4ef12791dc5720e7c Reviewed-on: https://go-review.googlesource.com/c/go/+/172283 Run-TryBot: Austin Clements <austin@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: David Chase <drchase@google.com>
2018-10-23cmd/compile, runtime: add new lightweight atomics for ppc64xCarlos Eduardo Seo
This change creates the infrastructure for new lightweight atomics primitives in runtime/internal/atomic: - LoadAcq, for load-acquire - StoreRel, for store-release - CasRel, for Compare-and-Swap-release and implements them for ppc64x. There is visible performance improvement in producer-consumer scenarios, like BenchmarkChanProdCons*: benchmark old ns/op new ns/op delta BenchmarkChanProdCons0-48 2034 2034 +0.00% BenchmarkChanProdCons10-48 1798 1608 -10.57% BenchmarkChanProdCons100-48 1596 1585 -0.69% BenchmarkChanProdConsWork0-48 2084 2046 -1.82% BenchmarkChanProdConsWork10-48 1829 1668 -8.80% BenchmarkChanProdConsWork100-48 1650 1650 +0.00% Fixes #21348 Change-Id: I1f6ce377e4a0fe4bd7f5f775e8036f50070ad8db Reviewed-on: https://go-review.googlesource.com/c/142277 Run-TryBot: Lynn Boger <laboger@linux.vnet.ibm.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: David Chase <drchase@google.com>
2018-02-12runtime: fix silly frame sizes on arm and arm64Austin Clements
"-8" is not a sensible frame size on arm and we're about to start rejecting it. Replace it with -4. Likewise, "-4" is not a sensible frame size on arm64 and we're about to start rejecting it. Replace it with -8. Finally, clean up some places we're weirdly inconsistent about using 0 versus -8. Change-Id: If85e229993d5f7f1f0cfa9852b4e294d053bd784 Reviewed-on: https://go-review.googlesource.com/92038 Run-TryBot: Austin Clements <austin@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com>
2016-09-13cmd/compile, runtime/internal/atomic: intrinsify And8, Or8 on ARM64Cherry Zhang
Also add assembly implementation, in case intrinsics is disabled. Change-Id: Iff0a8a8ce326651bd29f6c403f5ec08dd3629993 Reviewed-on: https://go-review.googlesource.com/28979 Run-TryBot: Cherry Zhang <cherryyz@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org>
2016-04-13runtime/internal/atomic: rename Storep1 to StorepNoWBAustin Clements
Make it clear that the point of this function stores a pointer *without* a write barrier. sed -i -e 's/Storep1/StorepNoWB/' $(git grep -l Storep1) Updates #15270. Change-Id: Ifad7e17815e51a738070655fe3b178afdadaecf6 Reviewed-on: https://go-review.googlesource.com/21994 Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Reviewed-by: Michael Matloob <matloob@golang.org>
2015-11-10runtime: break atomics out into package runtime/internal/atomicMichael Matloob
This change breaks out most of the atomics functions in the runtime into package runtime/internal/atomic. It adds some basic support in the toolchain for runtime packages, and also modifies linux/arm atomics to remove the dependency on the runtime's mutex. The mutexes have been replaced with spinlocks. all trybots are happy! In addition to the trybots, I've tested on the darwin/arm64 builder, on the darwin/arm builder, and on a ppc64le machine. Change-Id: I6698c8e3cf3834f55ce5824059f44d00dc8e3c2f Reviewed-on: https://go-review.googlesource.com/14204 Run-TryBot: Michael Matloob <matloob@golang.org> Reviewed-by: Russ Cox <rsc@golang.org>
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