Moves all but conversions.*, hash-seed-inl.h and math-random.* into
base, in preparation for moving the parts of conversions that don't
access HeapObjects.
Also moves uc16 and uc32 out of commons/globals.h into base/strings.h.
Bug: v8:11917
Change-Id: Ife359148bb0961a63833aff40d26331454b6afb6
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2979595
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Ross McIlroy <rmcilroy@chromium.org>
Auto-Submit: Dan Elphick <delphick@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75354}
The adding of base:: was mostly prepared using git grep and sed:
git grep -l <pattern> | grep -v base/vector.h | \
xargs sed -i 's/\b<pattern>\b/base::<pattern>/
with lots of manual clean-ups due to the resulting
v8::internal::base::Vectors.
#includes were fixed using:
git grep -l "src/utils/vector.h" | \
axargs sed -i 's!src/utils/vector.h!src/base/vector.h!'
Bug: v8:11879
Change-Id: I3e6d622987fee4478089c40539724c19735bd625
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2968412
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Hannes Payer <hpayer@chromium.org>
Commit-Queue: Dan Elphick <delphick@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75243}
This is the same as the original implementation in https://crrev.com/c/2567534
which was speculatively reverted due to flaky tests. Since then, there have
been some changes to fix those tests, so trying to get this in again.
Bug: v8:11002
Change-Id: I5bd0f63d3aec4cf6db403b35737f8b695b0f4e37
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2589063
Reviewed-by: Bill Budge <bbudge@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71746}
Implement vclt and add some assembler tests.
Bug: v8:10983
Change-Id: I78c701180ddc90af4b59db86a25188f281167366
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2575783
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Bill Budge <bbudge@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71685}
Add new instruction vpaddl for signed and unsigned integers, adding
assembler, disassembler, simulator support, and also tests.
The signed and unsigned opcodes for vpaddl are separate enums, because
the helper EncodeNeonUnaryOp only takes a NeonSize (not NeonDataType). I
considered changing the signature, but none of the other instructions
use a NeonDataType, so it seems unnecessary.
Bug: v8:11086
Change-Id: I5e6694ae407779c1fd3604c5a40ca0a1b6ce061b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2578233
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Bill Budge <bbudge@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71671}
Prototype v128.{load,store}{8,16,32,64}_lane on arm.
Bug: v8:10975
Change-Id: I649f567f39f8a5ba6992a86b761f93f62619c139
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2565079
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Reviewed-by: Bill Budge <bbudge@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71628}
This is a reland of e2aa734aef
The original change was speculatively reverted in
https://crrev.com/c/2568925 but seems unrelated to the flakey
test failures (which are on x64).
Original change's description:
> [wasm-simd][arm] Prototype i8x16.popcnt
>
> Bug: v8:11002
> Change-Id: Ib97e51ed52249a1af7a4b879396b70a016991719
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2567534
> Commit-Queue: Zhi An Ng <zhin@chromium.org>
> Reviewed-by: Bill Budge <bbudge@chromium.org>
> Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#71552}
Bug: v8:11002
Change-Id: I714918e2640d27d29953f940e3bedeb9ea2f8a08
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2567243
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Bill Budge <bbudge@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71585}
Currently we only correctly disassemble encoding A4, with a list of 4
regs.
Also added tests for these encodings.
Change-Id: I38066186d19deb8c180129d7a92b49bc589315cd
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2554258
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71350}
Implement these two instructions on arm.
Bug: v8:11038
Change-Id: I23d9c7291f60e29415cfbebced1bff323fd2465a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2485250
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Bill Budge <bbudge@chromium.org>
Cr-Commit-Position: refs/heads/master@{#70779}
The SpecialValue field used in the disassembler covers too wide a range,
this causes some duplication in the disassembler of instructions like
mov, since the SpecialValue includes a bit used for the immediate.
Attempt to refactor and follow the decoding guide given in the
architecture manual [0], F4.1 A32 instruction set encoding, with the
eventual goal for removing the duplicated instruction disassembly.
[0] ARM DDI 0487F.b ARMv8 A32 instruction set
Bug: v8:10933
Change-Id: Iddf4df317f9a5b29be2544ad2f9f93180e9bcdfc
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2497395
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#70775}
This is a reland of 57242a051e
no-sse4.1 builds were failing due to missing simd-scalar-lowering
for s128.const, this reland adds that implementation.
Original change's description:
> [wasm-simd][arm] Use vmov to move all ones to register
>
> vceq(dst, dst, dst) does not seem to always set the register to all
> ones. The right way should be be to use vmov (immediate) anyway. This
> was not supported in the assembler yet, so we need changes to the
> assembler, diassembler, and simulator.
>
> There is an unfortunate fork in logic in the simulator, due to the way
> the switches are set up, vmov (imm) logic is duplicated across two
> different cases, because the switch looks at the top bit of the
> immediate. Refactoring this will be a bigger change that is irrelevant
> for this bug, so I'm putting that off for now. Instead we extract the
> core of vmov (imm) into helpers and call it in the two cases.
>
> Bug: chromium:1112124
> Change-Id: I283dbcd86cb0572e5ee720835f897b51fae96701
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2337503
> Commit-Queue: Zhi An Ng <zhin@chromium.org>
> Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
> Reviewed-by: Bill Budge <bbudge@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#69315}
Bug: chromium:1112124
Change-Id: Id450e5cea41f7a569e49be8386a7788ca8f00658
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2346937
Reviewed-by: Bill Budge <bbudge@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69346}
This reverts commit 57242a051e.
Reason for revert: regression tests fails:
https://ci.chromium.org/p/v8/builders/ci/V8%20Linux%20-%20debug/31477
Original change's description:
> [wasm-simd][arm] Use vmov to move all ones to register
>
> vceq(dst, dst, dst) does not seem to always set the register to all
> ones. The right way should be be to use vmov (immediate) anyway. This
> was not supported in the assembler yet, so we need changes to the
> assembler, diassembler, and simulator.
>
> There is an unfortunate fork in logic in the simulator, due to the way
> the switches are set up, vmov (imm) logic is duplicated across two
> different cases, because the switch looks at the top bit of the
> immediate. Refactoring this will be a bigger change that is irrelevant
> for this bug, so I'm putting that off for now. Instead we extract the
> core of vmov (imm) into helpers and call it in the two cases.
>
> Bug: chromium:1112124
> Change-Id: I283dbcd86cb0572e5ee720835f897b51fae96701
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2337503
> Commit-Queue: Zhi An Ng <zhin@chromium.org>
> Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
> Reviewed-by: Bill Budge <bbudge@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#69315}
TBR=bbudge@chromium.org,jkummerow@chromium.org,v8-arm-ports@googlegroups.com,zhin@chromium.org
Change-Id: I5d9d1dcb81771f71001d959ec5a03a43a11c4233
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: chromium:1112124
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2347211
Reviewed-by: Bill Budge <bbudge@chromium.org>
Commit-Queue: Bill Budge <bbudge@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69316}
vceq(dst, dst, dst) does not seem to always set the register to all
ones. The right way should be be to use vmov (immediate) anyway. This
was not supported in the assembler yet, so we need changes to the
assembler, diassembler, and simulator.
There is an unfortunate fork in logic in the simulator, due to the way
the switches are set up, vmov (imm) logic is duplicated across two
different cases, because the switch looks at the top bit of the
immediate. Refactoring this will be a bigger change that is irrelevant
for this bug, so I'm putting that off for now. Instead we extract the
core of vmov (imm) into helpers and call it in the two cases.
Bug: chromium:1112124
Change-Id: I283dbcd86cb0572e5ee720835f897b51fae96701
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2337503
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Bill Budge <bbudge@chromium.org>
Cr-Commit-Position: refs/heads/master@{#69315}
Prototype f32x4.nearest on ARM for both ARM v7 and ARM v8. ARM v8 has
support for vrintn, and for ARM v7 we fallback to runtime.
Since ARM v8 uses vrintn, which is the same instruction used for
F32RoundTiesEven (scalar), wasm-compiler reuses the Float32RoundTiesEven
check.
Bug: v8:10553
Change-Id: I066b8c5f10fd86294afe1c530c516493deeb7b53
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2258037
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Deepti Gandluri <gdeepti@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#68526}
Prototype f32x4.trunc on ARM for both ARM v7 and ARM v8. ARM v8 has
support for vrintz, and for ARM v7 we fallback to runtime.
Since ARM v8 uses vrintz, which is the same instruction used for F32
trunc (scalar), wasm-compiler reuses the Float32RoundTruncate check.
Bug: v8:10553
Change-Id: I65ddc36ccff21f8f0ff21a6e768184c084ffcfea
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2256770
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Reviewed-by: Deepti Gandluri <gdeepti@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#68498}
Prototype f32x4.floor on ARM for both ARM v7 and ARM v8. ARM v8 has
support for vrintm, and for ARM v7 we fallback to runtime.
Since ARM v8 uses vrintm, which is the same instruction used for F32
Floor (scalar), wasm-compiler reuses the Float32RoundDown check.
Bug: v8:10553
Change-Id: I540e82a156131821f732cd427df2e5c68f4094d7
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2252541
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Reviewed-by: Deepti Gandluri <gdeepti@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#68470}
Prototype f32x4.ceil on ARM for both ARM v7 and ARM v8. ARM v8 has
support for vrintp, and for ARM v7 we fallback to runtime.
Since ARM v8 uses vrintp, which is the same instruction used for F32
Ceil (scalar), wasm-compiler reuses the Float32Round check, rather than
creating new F32x4Round optional operators.
Implementation for vrintp (Advanced SIMD version that takes Q
registers), assembler, disassembler support. Incomplete for now, but
more will be added as we add other rounding modes.
Bug: v8:10553
Change-Id: I4563608b9501f6f57c3a8325b17de89da7058a43
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2248779
Reviewed-by: Deepti Gandluri <gdeepti@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#68419}
Add 64-bit data size support to SHL and SHR, add simulator logic to
support new data size, and fix disasm.
For the disasm fix, casting size / 16 to NeonSize no longer works when
given a size of 64, it is 4, but should be 3.
Change-Id: I5bd1ce254cd3ff4b86159837087f22b2ed06703e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1994180
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#65825}
These instructions should always treat inputs as signed, and saturate to
unsigned min/max values.
E.g. given -1, it should saturate to 0.
The spec text,
https://github.com/WebAssembly/simd/blob/master/proposals/simd/SIMD.md#integer-to-integer-narrowing,
has been updated to describe this.
The changes here include codegen changes to ia32, x64, arm, and arm64,
changes to arm simulator, assembler, and disassembler to handle the case
of treating input as signed and narrowing to unsigned. The vqmovn
instruction can handle this case, our assembler wasn't allowing callers
to specify this.
The interpreter and scalar lowering are also fixed with this change.
Bug: v8:9729
Change-Id: I6f72baa825f59037f7754485df6a2964af59fe31
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1879423
Reviewed-by: Deepti Gandluri <gdeepti@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Bill Budge <bbudge@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#65051}
This reverts commit 5f28539599.
Reason for revert: presubmit failure
Original change's description:
> Move logging and diagnostics related source files
>
> This also introduces a COMMON_OWNERS file, which is derived from the
> current top-level OWNERS file. It is to be used for parts of the
> codebase that is not sensitive to domain-specific expertise.
>
> NOPRESUBMIT=true
> TBR=verwaest@chromium.org
>
> Bug: v8:9247
> Change-Id: I34a5eaa7cb1509a80d15094a2aceedd62665b17c
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1613987
> Reviewed-by: Yang Guo <yangguo@chromium.org>
> Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
> Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
> Commit-Queue: Yang Guo <yangguo@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#61600}
TBR=rmcilroy@chromium.org,yangguo@chromium.org,mstarzinger@chromium.org,verwaest@chromium.org
Change-Id: I3827c3af4fd63b18aa48c49617f318a01746e813
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:9247
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1617247
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61601}
This also introduces a COMMON_OWNERS file, which is derived from the
current top-level OWNERS file. It is to be used for parts of the
codebase that is not sensitive to domain-specific expertise.
NOPRESUBMIT=true
TBR=verwaest@chromium.org
Bug: v8:9247
Change-Id: I34a5eaa7cb1509a80d15094a2aceedd62665b17c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1613987
Reviewed-by: Yang Guo <yangguo@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Commit-Queue: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61600}
All macros defined in "format-macros.h" are dead now (after
https://crrev.com/c/1613243). This CL removes this header, and includes
<cinttypes> instead wherever we use format macros for the types defined
in <cstdint>.
Plus some drive-by cleanup of includes.
R=mlippautz@chromium.org
Bug: v8:9183
Change-Id: Ic379759b79edb50e38833defb1577cc3af7c8150
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1611800
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61540}
FATAL() calls with more than one argument are preserved.
The rest of chrome does this as well. Stack traces and minidumps should
be sufficient for analyzing the reason for crashes.
This saves 110kb for Android arm32.
Bug: chromium:958807
Change-Id: I88a1ec82f1ed7bd5e7dbccf6d645d5584f16de82
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1598159
Commit-Queue: Andrew Grieve <agrieve@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61426}
Our {Vector} template provides both {start} and {begin} methods. They
return exactly the same value. Since the {begin} method is needed for
iteration, and is also what standard containers provide, this CL
switches all uses of the {start} method to use {begin} instead.
Patchset 1 was auto-generated by using this clang AST matcher:
callExpr(
callee(
cxxMethodDecl(
hasName("start"),
ofClass(hasName("v8::internal::Vector")))
),
argumentCountIs(0))
Patchset 2 was created by running clang-format. Patchset 3 then
removes the now unused {Vector::start} method.
R=jkummerow@chromium.orgTBR=mstarzinger@chromium.org,yangguo@chromium.org,verwaest@chromium.org
Bug: v8:9183
Change-Id: Id9f01c92870872556e2bb3f6d5667463b0e3e5c6
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1587381
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61081}
Refactor all call sites to use the new API introduced in
https://crrev.com/c/1411347 and remove the legacy constructors.
R=mstarzinger@chromium.org
Bug: v8:8689, v8:8562
Change-Id: Id73686413726b2860f551dd200ef4b8823ef3034
Reviewed-on: https://chromium-review.googlesource.com/c/1415491
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58884}
- Implement all the I64Atomic operations on ARM
- Change assembler methods to use Registers instead of memory operands
- Move atomics64 test up be tested on all archs, disable tests on MIPS
BUG:v8:6532
Change-Id: I91bd42fa819f194be15c719266c36230f9c65db8
Reviewed-on: https://chromium-review.googlesource.com/1180211
Commit-Queue: Deepti Gandluri <gdeepti@chromium.org>
Reviewed-by: Bill Budge <bbudge@chromium.org>
Reviewed-by: Ben Smith <binji@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55416}
This adds support for unaligned load/store access to the DataView
backing store and uses byteswap operations to fix up the endianess
when necessary. This changes the Word32ReverseBytes operator to be
a required operator and adds the missing support on the Intel and
ARM platforms (on 64-bit platforms the Word64ReverseBytes operator
is also mandatory now).
This further improves the performance on the dataviewperf.js test
mentioned in the tracking bug by up to 40%, and at the same time
reduces the code complexity in the EffectControlLinearizer.
Bug: chromium:225811
Change-Id: I7c1ec826faf46a144a5a9068f8f815a5fd040997
Reviewed-on: https://chromium-review.googlesource.com/1174252
Reviewed-by: Sigurd Schneider <sigurds@chromium.org>
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55111}
This reverts commit c46915b931.
Reason for revert: Disasm failures https://ci.chromium.org/p/v8/builders/luci.v8.ci/V8%20Linux%20-%20debug/21727
Original change's description:
> [turbofan] Further optimize DataView accesses.
>
> This adds support for unaligned load/store access to the DataView
> backing store and uses byteswap operations to fix up the endianess
> when necessary. This changes the Word32ReverseBytes operator to be
> a required operator and adds the missing support on the Intel and
> ARM platforms (on 64-bit platforms the Word64ReverseBytes operator
> is also mandatory now).
>
> This further improves the performance on the dataviewperf.js test
> mentioned in the tracking bug by up to 40%, and at the same time
> reduces the code complexity in the EffectControlLinearizer.
>
> Bug: chromium:225811
> Change-Id: I296170b828c2ccc1c317ed37840b564aa14cdec2
> Reviewed-on: https://chromium-review.googlesource.com/1172777
> Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
> Reviewed-by: Sigurd Schneider <sigurds@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#55099}
TBR=sigurds@chromium.org,bmeurer@chromium.org
Change-Id: If7a62e3a1a4ad26823fcbd2ab6eb4c053ad11c49
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: chromium:225811
Reviewed-on: https://chromium-review.googlesource.com/1174171
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55107}
This adds support for unaligned load/store access to the DataView
backing store and uses byteswap operations to fix up the endianess
when necessary. This changes the Word32ReverseBytes operator to be
a required operator and adds the missing support on the Intel and
ARM platforms (on 64-bit platforms the Word64ReverseBytes operator
is also mandatory now).
This further improves the performance on the dataviewperf.js test
mentioned in the tracking bug by up to 40%, and at the same time
reduces the code complexity in the EffectControlLinearizer.
Bug: chromium:225811
Change-Id: I296170b828c2ccc1c317ed37840b564aa14cdec2
Reviewed-on: https://chromium-review.googlesource.com/1172777
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Sigurd Schneider <sigurds@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55099}
The instruction size in bytes is now kInstrSize on all platforms.
Bug: v8:6666
Change-Id: I2f9880a6a74199a439c8327a4117efb74240aa22
Reviewed-on: https://chromium-review.googlesource.com/1164955
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54944}
