- 01 Apr, 2021 1 commit
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Sam Parker authored
Introduce two machine nodes for FABD and fold Float32/64 Abs,Sub during instruction selection. This gives ~1% speed improvement of the Bullet physics engine compiled as wasm. Change-Id: Ifd985538e6ebb280bc0eaf11b0ebfc687891cf91 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2786854Reviewed-by:
Jakob Gruber <jgruber@chromium.org> Reviewed-by:
Andreas Haas <ahaas@chromium.org> Commit-Queue: Martyn Capewell <martyn.capewell@arm.com> Cr-Commit-Position: refs/heads/master@{#73765}
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- 29 Mar, 2021 1 commit
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Milad Fa authored
Change-Id: Ie79995eb81f2c69ad73757f74a5e4dbfb22b0481 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2784003Reviewed-by:
Andreas Haas <ahaas@chromium.org> Reviewed-by:
Manos Koukoutos <manoskouk@chromium.org> Commit-Queue: Milad Fa <mfarazma@redhat.com> Cr-Commit-Position: refs/heads/master@{#73708}
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- 25 Mar, 2021 2 commits
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Ross McIlroy authored
AddImmediate ends up pushing repeated immediates very often unecessarily. Add support for Int64 immediates being inlined into InstructionOperand if they fit into the payload (which is almost always the case). Also add a seperate rpo_immediate vector for RPO numbers to avoid having to add them to the immediates_ vector multiple times. Ideally the RPO values would also be inlined, however JumpThreading needs to patch RPO targets throughout the instruction stream, so we need an indirection. Change-Id: I75b1cdb05917f85d4f740a34c3720dd9cf0ee29c Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2782282 Commit-Queue: Ross McIlroy <rmcilroy@chromium.org> Reviewed-by:
Santiago Aboy Solanes <solanes@chromium.org> Cr-Commit-Position: refs/heads/master@{#73687}
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Sam Parker authored
Add Float32Select and Float64Select as OptionalOperators and insert these, if supported, when handling a Select expression in the wasm graph builder. FlagsContinuation have been modified to support the select operation and code generation support has been added for arm64. This improves the 'Bullet' physics benchmark by ~2-3%. Change-Id: I928c3085c9136ad8baeeb34c71c47c1c8338844c Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2763871 Commit-Queue: Martyn Capewell <martyn.capewell@arm.com> Reviewed-by:
Andreas Haas <ahaas@chromium.org> Reviewed-by:
Georg Neis <neis@chromium.org> Cr-Commit-Position: refs/heads/master@{#73657}
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- 24 Mar, 2021 1 commit
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Ng Zhi An authored
We now canonicalize earlier in the pipeline, and don't need to worry about non-canonicalized shuffles. Bug: v8:11542,v8:11257 Change-Id: If9f5c44061465be339c98e479fd8c5a437bbd74b Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2778673Reviewed-by:
Bill Budge <bbudge@chromium.org> Commit-Queue: Zhi An Ng <zhin@chromium.org> Cr-Commit-Position: refs/heads/master@{#73645}
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- 23 Mar, 2021 1 commit
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Manos Koukoutos authored
LoadImmutable represents a load from a position in memory that is known to be immutable, e.g. an immutable IsolateRoot or an immutable field of a WasmInstanceObject. Because the returned value cannot change through the execution of a function, LoadImmutable is a pure operator and does not have effect or control edges. This will allow more aggressive optimizations of loads of fields of the Isolate and Instance that are known to be immutable. Requires that the memory in question has been initialized at function start even through inlining. Note: We may reconsider this approach once we have escape analysis for wasm, and replace it with immutable load/initialize operators that live inside the effect chain and are less restriced. Bug: v8:11510 Change-Id: I5e8e4f27d7008f39f01175ffa95a9c531ba63e66 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2775568Reviewed-by:
Andreas Haas <ahaas@chromium.org> Reviewed-by:
Georg Neis <neis@chromium.org> Commit-Queue: Manos Koukoutos <manoskouk@chromium.org> Cr-Commit-Position: refs/heads/master@{#73594}
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- 22 Mar, 2021 1 commit
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Ng Zhi An authored
When swizzle is called with a v128.const node, we can check that the indices are either all in bounds, or if they are out of bounds the top bit of each byte is set. This will match exactly pshufb behavior, and so we can omit the paddusb (and getting external reference). Bug: v8:10992 Change-Id: I5479a9eb92ebcfc12bedff5efd3e72bb4a43ff40 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2766222Reviewed-by:
Deepti Gandluri <gdeepti@chromium.org> Reviewed-by:
Georg Neis <neis@chromium.org> Commit-Queue: Zhi An Ng <zhin@chromium.org> Cr-Commit-Position: refs/heads/master@{#73583}
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- 18 Mar, 2021 1 commit
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Clemens Backes authored
The test was extended in this CL: https://crrev.com/c/2762420 It now uses wasm::SimdShuffle, which is only available if webassembly is enabled. Thus, #if out the test if webassembly is disabled. Drive-by: Add a missing include. R=jkummerow@chromium.org CC=zhin@chromium.org Bug: v8:11238 Change-Id: I1b53d0145467b58616a161944fb88d2ca256fd58 Cq-Include-Trybots: luci.v8.try:v8_linux64_no_wasm_compile_rel Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2772978Reviewed-by:
Zhi An Ng <zhin@chromium.org> Commit-Queue: Clemens Backes <clemensb@chromium.org> Cr-Commit-Position: refs/heads/master@{#73517}
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- 17 Mar, 2021 1 commit
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Ng Zhi An authored
We currently canonicalize shuffles in the architecture specific instruction selector. This has the drawback that if we want to pattern match on nodes that have a shuffle as input, they need to individually canonicalize the shuffle. There can also be a subtle bug if we canonicalize the same shuffle node twice (see bug for details). This moves the canonicalization to "construction time", in wasm-compiler, when building the graph. As such, any pattern matches in instruction-selector will only need to deal with canonicalized shuffles. We introduce a new kind of parameter for shuffle nodes, ShuffleParameter, to store the 16 bytes plus a bool indicating if this is a swizzle. A swizzle essentially: inputs to the shuffle are the same or all indices only touch 1 input. We calculate this when canonicalizing, so store this bit of information inside of the node's parameter. We update the tests in x64 to handle special cases where, even though the node's inputs are not swapped (due to canonicalization), they need to be swapped for the specific instruction selected (e.g. palignr). The test data also contains canonicalized shuffles, so we have to manually canonicalize them. Bug: v8:11542 Change-Id: I4e78082267bd03d6caedf43d68d81ef3f5f364a8 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2762420Reviewed-by:
Bill Budge <bbudge@chromium.org> Commit-Queue: Zhi An Ng <zhin@chromium.org> Cr-Commit-Position: refs/heads/master@{#73495}
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- 15 Mar, 2021 1 commit
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Ng Zhi An authored
I want to extract the Canonicalize shuffle out of the arch-specific instruction selector, since all archs have to do that anyway. Adding these tests to make sure the matching still works. Bug: v8:11542 Change-Id: Ic7ce0e0a027ce858a30f79a0f9ef2495bcaab4c7 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2750289Reviewed-by:
Bill Budge <bbudge@chromium.org> Commit-Queue: Zhi An Ng <zhin@chromium.org> Cr-Commit-Position: refs/heads/master@{#73414}
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- 11 Mar, 2021 1 commit
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Manos Koukoutos authored
CsaLoadElimination failed to account for truncation when optimizing loads. This CL extends the notion of compatible Loads and Stores to include ({store}, {load}) pairs which both have integral representation and {store}'s representation is no smaller than {load}'s. In case the representations are not identical, it truncates and possibly sign-extends {store} before forwarding it to {load}. Additional change: Extend ObjectMayAlias with wasm allocating builtin calls. Bug: v8:11504 Change-Id: I43f89a13793b54477a33be18aaf346462aefa8e5 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2739975Reviewed-by:
Georg Neis <neis@chromium.org> Commit-Queue: Manos Koukoutos <manoskouk@chromium.org> Cr-Commit-Position: refs/heads/master@{#73340}
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- 08 Mar, 2021 1 commit
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Manos Koukoutos authored
This CL enables full csa optimization for wasm code. To take advantage of csa load elimination, it switches from Load/Store to LoadFromObject/ StoreToObject operators in the wasm compiler (where possible). Bug: v8:11510 Change-Id: Ibecd8ba81e89a76553b12ad2671ecad520e9e066 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2727407Reviewed-by:
Georg Neis <neis@chromium.org> Reviewed-by:
Clemens Backes <clemensb@chromium.org> Reviewed-by:
Andreas Haas <ahaas@chromium.org> Reviewed-by:
Zhi An Ng <zhin@chromium.org> Commit-Queue: Manos Koukoutos <manoskouk@chromium.org> Cr-Commit-Position: refs/heads/master@{#73268}
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- 05 Mar, 2021 2 commits
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Bill Budge authored
This is a (manual) reland of ba87518e071a75fb951b490d3f75a87ca715cc23 It is unchanged, except to rebase around a merge conflict. TBR=neis@chromium.org, jgruber@chromium.org Bug: v8:9198 > [codegen][frames] Generalize argument padding slot code > > - Removes kPadArguments boolean. > - Changes ShouldPadArguments to ArgumentPaddingSlots to reflect > that on some architectures more than 1 padding slot may be needed. > - Adds AddArgumentPaddingSlots and ShouldPadArguments convenience > functions. > > Bug: v8:9198 > > Change-Id: Iba87518e071a75fb951b490d3f75a87ca715cc23 > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2679109 > Commit-Queue: Bill Budge <bbudge@chromium.org> > Reviewed-by: Georg Neis <neis@chromium.org> > Reviewed-by: Jakob Gruber <jgruber@chromium.org> > Cr-Commit-Position: refs/heads/master@{#72605} Change-Id: I2a9022964d3bafe68c5c1e7de0ae7e837dd5c2e3 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2740457Reviewed-by:
Bill Budge <bbudge@chromium.org> Commit-Queue: Bill Budge <bbudge@chromium.org> Cr-Commit-Position: refs/heads/master@{#73241}
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Bill Budge authored
This is a reland of 352b9ecb The test/fix CL has been merged in, as the fixes to return slot accounting are needed to fix Arm64 issues turned up by the fuzzers: https://chromium-review.googlesource.com/c/v8/v8/+/2644139 The reverted fix for Wasm return slot allocation is added in patchset #2, to avoid fuzzer issues that it fixed: https://chromium-review.googlesource.com/c/v8/v8/+/2683024 TBR=neis@chromium.org Original change's description: > Reland "Reland "[compiler][wasm] Align Frame slots to value size"" > > This is a reland of 1694925c > > Minor fix to linkage for constexpr. > > TBR=ahaas@chromium.org,neis@chromium.org > > Original change's description: > > Reland "[compiler][wasm] Align Frame slots to value size" > > > > This is a reland of cddaf66c > > > > Original change's description: > > > [compiler][wasm] Align Frame slots to value size > > > > > > - Adds an AlignedSlotAllocator class and tests, to unify slot > > > allocation. This attempts to use alignment holes for smaller > > > values. > > > - Reworks Frame to use the new allocator for stack slots. > > > - Reworks LinkageAllocator to use the new allocator for stack > > > slots and for ARMv7 FP register aliasing. > > > - Fixes the RegisterAllocator to align spill slots. > > > - Fixes InstructionSelector to align spill slots. > > > > > > Bug: v8:9198 > > > > > > Change-Id: Ida148db428be89ef95de748ec5fc0e7b0358f523 > > > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2512840 > > > Commit-Queue: Bill Budge <bbudge@chromium.org> > > > Reviewed-by: Georg Neis <neis@chromium.org> > > > Reviewed-by: Andreas Haas <ahaas@chromium.org> > > > Cr-Commit-Position: refs/heads/master@{#71644} > > > > Bug: v8:9198 > > Change-Id: Ib91fa6746370c38496706341e12d05c7bf999389 > > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2633390 > > Commit-Queue: Bill Budge <bbudge@chromium.org> > > Reviewed-by: Andreas Haas <ahaas@chromium.org> > > Reviewed-by: Georg Neis <neis@chromium.org> > > Cr-Commit-Position: refs/heads/master@{#72195} > > Bug: v8:9198 > Change-Id: I91e02b823af8ec925dacf075388fb22e3eeb3384 > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2640890 > Reviewed-by: Bill Budge <bbudge@chromium.org> > Commit-Queue: Bill Budge <bbudge@chromium.org> > Cr-Commit-Position: refs/heads/master@{#72209} Bug: v8:9198 Change-Id: Ia5cf63af4e5991bc7cf42da9972ffd044fc829f0 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2733177 Commit-Queue: Bill Budge <bbudge@chromium.org> Reviewed-by:
Andreas Haas <ahaas@chromium.org> Cr-Commit-Position: refs/heads/master@{#73238}
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- 03 Mar, 2021 1 commit
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Ng Zhi An authored
This is similar to the optimization for f32x4 dup + mul in https://crrev.com/c/2719083. Refactor the pattern-matching code into a helper function that returns a struct with all the necessary fields to emit the optimized fmul by element instruction. Add similar unittests and a negative test as well. Bug: v8:11257 Change-Id: I79ab0bc783f43397191a54bf6fa736dd4dc8d807 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2728428Reviewed-by:
Andreas Haas <ahaas@chromium.org> Commit-Queue: Zhi An Ng <zhin@chromium.org> Cr-Commit-Position: refs/heads/master@{#73164}
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- 02 Mar, 2021 1 commit
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Ng Zhi An authored
Wasm SIMD does not have an opcode to multiply a vector by a scalar. In these cases, Wasm code uses mul(x, shuffle(y, imms)), where the shuffle is a dup of a single lane in y. Pattern match on this to emit a fmul (element). We can do similar pattern match on f64x2 too, that will come in a future patch. Bug: v8:11257 Change-Id: I61e8c46b56719a1179c8a6032dbf8a4cc03b40a9 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2719083 Commit-Queue: Zhi An Ng <zhin@chromium.org> Reviewed-by:
Andreas Haas <ahaas@chromium.org> Cr-Commit-Position: refs/heads/master@{#73141}
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- 26 Feb, 2021 1 commit
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Manos Koukoutos authored
We experimentally globally enable loop unrolling for wasm code. This might be reverted based on the results of perf bots. Additional change: Add LoopExitValue to Int64Lowering, plus a small simplification. Bug: v8:11298 Change-Id: Iaf2829e80f948d70c5fb6ed7c974db7f59265fa3 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2718611Reviewed-by:
Andreas Haas <ahaas@chromium.org> Commit-Queue: Manos Koukoutos <manoskouk@chromium.org> Cr-Commit-Position: refs/heads/master@{#73072}
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- 25 Feb, 2021 1 commit
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Ng Zhi An authored
This instruction is not in the final SIMD proposal. Bug: v8:6020 Change-Id: Ifef1b3d58bf660f2d30784f587aed85f327825ec Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2716073 Commit-Queue: Zhi An Ng <zhin@chromium.org> Reviewed-by:
Deepti Gandluri <gdeepti@chromium.org> Cr-Commit-Position: refs/heads/master@{#73058}
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- 24 Feb, 2021 1 commit
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Georg Neis authored
It had essentially become a synonym for BytecodeArrayAccessor. This removes the BytecodeArrayIterator class and renames BytecodeArrayAccessor to BytecodeArrayIterator. Change-Id: I79cf8574f3c8804822f90c8f921c17ca7ab85f48 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2715523 Auto-Submit: Georg Neis <neis@chromium.org> Reviewed-by:
Leszek Swirski <leszeks@chromium.org> Reviewed-by:
Ross McIlroy <rmcilroy@chromium.org> Commit-Queue: Ross McIlroy <rmcilroy@chromium.org> Cr-Commit-Position: refs/heads/master@{#73005}
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- 23 Feb, 2021 1 commit
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Bill Budge authored
This reverts commit 9da4e363. Reason for revert: Fuzzers revealed that Liftoff doesn't use the CallDescriptor when pushing arguments, breaking linkage. tbr=ahaas@chromium.org,neis@chromium.org,jgruber@chromium.org Original change's description: > Reland "Reland "Reland "[compiler][wasm] Align Frame slots to value size""" > > This is a reland of 352b9ecb > > The test/fix CL has been merged in, as the fixes to return slot > accounting are needed to fix Arm64 issues turned up by the fuzzers: > > https://chromium-review.googlesource.com/c/v8/v8/+/2644139 > > Original change's description: > > Reland "Reland "[compiler][wasm] Align Frame slots to value size"" > > > > This is a reland of 1694925c > > > > Minor fix to linkage for constexpr. > > > > TBR=ahaas@chromium.org,neis@chromium.org > > > > Original change's description: > > > Reland "[compiler][wasm] Align Frame slots to value size" > > > > > > This is a reland of cddaf66c > > > > > > Original change's description: > > > > [compiler][wasm] Align Frame slots to value size > > > > > > > > - Adds an AlignedSlotAllocator class and tests, to unify slot > > > > allocation. This attempts to use alignment holes for smaller > > > > values. > > > > - Reworks Frame to use the new allocator for stack slots. > > > > - Reworks LinkageAllocator to use the new allocator for stack > > > > slots and for ARMv7 FP register aliasing. > > > > - Fixes the RegisterAllocator to align spill slots. > > > > - Fixes InstructionSelector to align spill slots. > > > > > > > > Bug: v8:9198 > > > > > > > > Change-Id: Ida148db428be89ef95de748ec5fc0e7b0358f523 > > > > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2512840 > > > > Commit-Queue: Bill Budge <bbudge@chromium.org> > > > > Reviewed-by: Georg Neis <neis@chromium.org> > > > > Reviewed-by: Andreas Haas <ahaas@chromium.org> > > > > Cr-Commit-Position: refs/heads/master@{#71644} > > > > > > Bug: v8:9198 > > > Change-Id: Ib91fa6746370c38496706341e12d05c7bf999389 > > > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2633390 > > > Commit-Queue: Bill Budge <bbudge@chromium.org> > > > Reviewed-by: Andreas Haas <ahaas@chromium.org> > > > Reviewed-by: Georg Neis <neis@chromium.org> > > > Cr-Commit-Position: refs/heads/master@{#72195} > > > > Bug: v8:9198 > > Change-Id: I91e02b823af8ec925dacf075388fb22e3eeb3384 > > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2640890 > > Reviewed-by: Bill Budge <bbudge@chromium.org> > > Commit-Queue: Bill Budge <bbudge@chromium.org> > > Cr-Commit-Position: refs/heads/master@{#72209} > > Bug: v8:9198 > Change-Id: I8258f87463f66417c7028b9a1fed4b9b6d82a3be > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2669892 > Reviewed-by: Georg Neis <neis@chromium.org> > Reviewed-by: Andreas Haas <ahaas@chromium.org> > Commit-Queue: Bill Budge <bbudge@chromium.org> > Cr-Commit-Position: refs/heads/master@{#72506} Bug: v8:9198 Change-Id: I7f344e4d018ce3c02333b0b08efeecdd8cddf082 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2713207Reviewed-by:
Bill Budge <bbudge@chromium.org> Reviewed-by:
Zhi An Ng <zhin@chromium.org> Reviewed-by:
Adam Klein <adamk@chromium.org> Commit-Queue: Bill Budge <bbudge@chromium.org> Cr-Commit-Position: refs/heads/master@{#72937}
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- 22 Feb, 2021 1 commit
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Bill Budge authored
This reverts commit 8cf4eec7. Reason for revert: Rolling back to previous greedy slot allocator. tbr=neis@chromium.org,jgruber@chromium.org Original change's description: > [codegen][frames] Generalize argument padding slot code > > - Removes kPadArguments boolean. > - Changes ShouldPadArguments to ArgumentPaddingSlots to reflect > that on some architectures more than 1 padding slot may be needed. > - Adds AddArgumentPaddingSlots and ShouldPadArguments convenience > functions. > > Bug: v8:9198 > > Change-Id: Iba87518e071a75fb951b490d3f75a87ca715cc23 > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2679109 > Commit-Queue: Bill Budge <bbudge@chromium.org> > Reviewed-by: Georg Neis <neis@chromium.org> > Reviewed-by: Jakob Gruber <jgruber@chromium.org> > Cr-Commit-Position: refs/heads/master@{#72605} Bug: v8:9198 Change-Id: Ie93d32d4b93c67840e4792acb017f28a826bd030 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2713205 Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com> Reviewed-by:
Bill Budge <bbudge@chromium.org> Commit-Queue: Bill Budge <bbudge@chromium.org> Cr-Commit-Position: refs/heads/master@{#72931}
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- 17 Feb, 2021 1 commit
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Seth Brenith authored
This is a reland of cf93071c Original change's description: > [interpreter] Short Star bytecode > > Design doc: > https://docs.google.com/document/d/1g_NExMT78II_KnIYNa9MvyPYIj23qAiFUEsyemY5KRk/edit > > This change adds 16 new interpreter opcodes, kStar0 through kStar15, so > that we can use a single byte to represent the common operation of > storing to a low-numbered register. This generally reduces the quantity > of bytecode generated on web sites by 8-9%. > > In order to not degrade speed, a couple of other changes are required: > > The existing lookahead logic to check for Star after certain other > bytecode handlers is updated to check for these new short Star codes > instead. Furthermore, that lookahead logic is updated to contain its own > copy of the dispatch jump rather than merging control flow with the > lookahead-failed case, to improve branch prediction. > > A bunch of constants use bytecode size in bytes as a proxy for the size > or complexity of a function, and are adjusted downward proportionally to > the decrease in generated bytecode size. > > Other small drive-by fix: update generate-bytecode-expectations to emit > \n instead of \r\n on Windows. > > Change-Id: I6307c2b0f5794a3a1088bb0fb94f6e1615441ed5 > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2641180 > Reviewed-by: Ross McIlroy <rmcilroy@chromium.org> > Commit-Queue: Seth Brenith <seth.brenith@microsoft.com> > Cr-Commit-Position: refs/heads/master@{#72773} Change-Id: I1afb670c25694498b3989de615858f984a8c7f6f Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2698057 Commit-Queue: Seth Brenith <seth.brenith@microsoft.com> Reviewed-by:
Ross McIlroy <rmcilroy@chromium.org> Reviewed-by:
Mythri Alle <mythria@chromium.org> Cr-Commit-Position: refs/heads/master@{#72821}
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- 16 Feb, 2021 2 commits
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Leszek Swirski authored
This reverts commit cf93071c. Reason for revert: Speculative revert because of Mac4 GC stress failure: https://ci.chromium.org/ui/p/v8/builders/ci/V8%20Mac64%20GC%20Stress/16697/overview Original change's description: > [interpreter] Short Star bytecode > > Design doc: > https://docs.google.com/document/d/1g_NExMT78II_KnIYNa9MvyPYIj23qAiFUEsyemY5KRk/edit > > This change adds 16 new interpreter opcodes, kStar0 through kStar15, so > that we can use a single byte to represent the common operation of > storing to a low-numbered register. This generally reduces the quantity > of bytecode generated on web sites by 8-9%. > > In order to not degrade speed, a couple of other changes are required: > > The existing lookahead logic to check for Star after certain other > bytecode handlers is updated to check for these new short Star codes > instead. Furthermore, that lookahead logic is updated to contain its own > copy of the dispatch jump rather than merging control flow with the > lookahead-failed case, to improve branch prediction. > > A bunch of constants use bytecode size in bytes as a proxy for the size > or complexity of a function, and are adjusted downward proportionally to > the decrease in generated bytecode size. > > Other small drive-by fix: update generate-bytecode-expectations to emit > \n instead of \r\n on Windows. > > Change-Id: I6307c2b0f5794a3a1088bb0fb94f6e1615441ed5 > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2641180 > Reviewed-by: Ross McIlroy <rmcilroy@chromium.org> > Commit-Queue: Seth Brenith <seth.brenith@microsoft.com> > Cr-Commit-Position: refs/heads/master@{#72773} TBR=rmcilroy@chromium.org,mythria@chromium.org,seth.brenith@microsoft.com Change-Id: I0162b9400861b90bacef27cca9aebc8ab9d74c10 No-Presubmit: true No-Tree-Checks: true No-Try: true Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2697350Reviewed-by:
Leszek Swirski <leszeks@chromium.org> Commit-Queue: Leszek Swirski <leszeks@chromium.org> Cr-Commit-Position: refs/heads/master@{#72777}
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Seth Brenith authored
Design doc: https://docs.google.com/document/d/1g_NExMT78II_KnIYNa9MvyPYIj23qAiFUEsyemY5KRk/edit This change adds 16 new interpreter opcodes, kStar0 through kStar15, so that we can use a single byte to represent the common operation of storing to a low-numbered register. This generally reduces the quantity of bytecode generated on web sites by 8-9%. In order to not degrade speed, a couple of other changes are required: The existing lookahead logic to check for Star after certain other bytecode handlers is updated to check for these new short Star codes instead. Furthermore, that lookahead logic is updated to contain its own copy of the dispatch jump rather than merging control flow with the lookahead-failed case, to improve branch prediction. A bunch of constants use bytecode size in bytes as a proxy for the size or complexity of a function, and are adjusted downward proportionally to the decrease in generated bytecode size. Other small drive-by fix: update generate-bytecode-expectations to emit \n instead of \r\n on Windows. Change-Id: I6307c2b0f5794a3a1088bb0fb94f6e1615441ed5 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2641180Reviewed-by:
Ross McIlroy <rmcilroy@chromium.org> Commit-Queue: Seth Brenith <seth.brenith@microsoft.com> Cr-Commit-Position: refs/heads/master@{#72773}
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- 15 Feb, 2021 1 commit
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Leszek Swirski authored
Add a new StackFrame class for unoptimized frames (which are either interpreted or baseline). BaselineFrame becomes a subclass of this rather than InterpretedFrame, and the various frame constants helpers are similarly amended. Bug: v8:11420, v8:11429 Change-Id: I87e9368aef48ef06a39476bf826f379ce1441528 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2692208 Commit-Queue: Leszek Swirski <leszeks@chromium.org> Auto-Submit: Leszek Swirski <leszeks@chromium.org> Reviewed-by:
Jakob Gruber <jgruber@chromium.org> Reviewed-by:
Ross McIlroy <rmcilroy@chromium.org> Reviewed-by:
Ulan Degenbaev <ulan@chromium.org> Cr-Commit-Position: refs/heads/master@{#72743}
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- 12 Feb, 2021 1 commit
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Ross McIlroy authored
Previously it was possible for a slot operand to be allocated a constant operand which is not valid. This CL adds support to the mid-tier register allocator to keep track of whether spilled operands can support constant operands, and if not to instead move the constant to a spill slot at it's definition point, and use that spill slot instead. In the process of doing this, we can cleanup the hack that required constants to always be allocated to a register for REGISTER_OR_SLOT operator policies. BUG=chromium:10772,v8:10772,v8:9684 Change-Id: I975ea2c481b45fc0855e175bc6dc2bd0a83f509a Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2692569Reviewed-by:
Santiago Aboy Solanes <solanes@chromium.org> Commit-Queue: Ross McIlroy <rmcilroy@chromium.org> Cr-Commit-Position: refs/heads/master@{#72722}
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- 09 Feb, 2021 2 commits
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Bill Budge authored
- Removes kPadArguments boolean. - Changes ShouldPadArguments to ArgumentPaddingSlots to reflect that on some architectures more than 1 padding slot may be needed. - Adds AddArgumentPaddingSlots and ShouldPadArguments convenience functions. Bug: v8:9198 Change-Id: Iba87518e071a75fb951b490d3f75a87ca715cc23 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2679109 Commit-Queue: Bill Budge <bbudge@chromium.org> Reviewed-by:
Georg Neis <neis@chromium.org> Reviewed-by:
Jakob Gruber <jgruber@chromium.org> Cr-Commit-Position: refs/heads/master@{#72605}
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Brice Dobry authored
This very large changeset adds support for RISC-V. Bug: v8:10991 Change-Id: Ic997c94cc12bba6881bc208e66526f423dd0679c Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2571344 Commit-Queue: Brice Dobry <brice.dobry@futurewei.com> Commit-Queue: Georg Neis <neis@chromium.org> Reviewed-by:
Georg Neis <neis@chromium.org> Reviewed-by:
Hannes Payer <hpayer@chromium.org> Reviewed-by:
Michael Achenbach <machenbach@chromium.org> Reviewed-by:
Michael Stanton <mvstanton@chromium.org> Cr-Commit-Position: refs/heads/master@{#72598}
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- 03 Feb, 2021 1 commit
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Bill Budge authored
This is a reland of 352b9ecb The test/fix CL has been merged in, as the fixes to return slot accounting are needed to fix Arm64 issues turned up by the fuzzers: https://chromium-review.googlesource.com/c/v8/v8/+/2644139 Original change's description: > Reland "Reland "[compiler][wasm] Align Frame slots to value size"" > > This is a reland of 1694925c > > Minor fix to linkage for constexpr. > > TBR=ahaas@chromium.org,neis@chromium.org > > Original change's description: > > Reland "[compiler][wasm] Align Frame slots to value size" > > > > This is a reland of cddaf66c > > > > Original change's description: > > > [compiler][wasm] Align Frame slots to value size > > > > > > - Adds an AlignedSlotAllocator class and tests, to unify slot > > > allocation. This attempts to use alignment holes for smaller > > > values. > > > - Reworks Frame to use the new allocator for stack slots. > > > - Reworks LinkageAllocator to use the new allocator for stack > > > slots and for ARMv7 FP register aliasing. > > > - Fixes the RegisterAllocator to align spill slots. > > > - Fixes InstructionSelector to align spill slots. > > > > > > Bug: v8:9198 > > > > > > Change-Id: Ida148db428be89ef95de748ec5fc0e7b0358f523 > > > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2512840 > > > Commit-Queue: Bill Budge <bbudge@chromium.org> > > > Reviewed-by: Georg Neis <neis@chromium.org> > > > Reviewed-by: Andreas Haas <ahaas@chromium.org> > > > Cr-Commit-Position: refs/heads/master@{#71644} > > > > Bug: v8:9198 > > Change-Id: Ib91fa6746370c38496706341e12d05c7bf999389 > > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2633390 > > Commit-Queue: Bill Budge <bbudge@chromium.org> > > Reviewed-by: Andreas Haas <ahaas@chromium.org> > > Reviewed-by: Georg Neis <neis@chromium.org> > > Cr-Commit-Position: refs/heads/master@{#72195} > > Bug: v8:9198 > Change-Id: I91e02b823af8ec925dacf075388fb22e3eeb3384 > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2640890 > Reviewed-by: Bill Budge <bbudge@chromium.org> > Commit-Queue: Bill Budge <bbudge@chromium.org> > Cr-Commit-Position: refs/heads/master@{#72209} Bug: v8:9198 Change-Id: I8258f87463f66417c7028b9a1fed4b9b6d82a3be Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2669892Reviewed-by:
Georg Neis <neis@chromium.org> Reviewed-by:
Andreas Haas <ahaas@chromium.org> Commit-Queue: Bill Budge <bbudge@chromium.org> Cr-Commit-Position: refs/heads/master@{#72506}
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- 25 Jan, 2021 1 commit
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Jakob Gruber authored
Looks like these may have been missed; all other related operators silence NaNs. Bug: v8:7519 Change-Id: If6ee8d6e02d304ccbb4821c21386f93eab225434 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2637853 Commit-Queue: Jakob Gruber <jgruber@chromium.org> Reviewed-by:
Georg Neis <neis@chromium.org> Cr-Commit-Position: refs/heads/master@{#72277}
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- 20 Jan, 2021 2 commits
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Jakob Gruber authored
Move index constants into the wrapper, add getters, and use the wrapper in more spots. Bug: v8:1166136 Change-Id: I3f37a541482fd6b7c604719c759952a72d58bad2 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2637218 Commit-Queue: Jakob Gruber <jgruber@chromium.org> Reviewed-by:
Maya Lekova <mslekova@chromium.org> Cr-Commit-Position: refs/heads/master@{#72198}
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Jakob Gruber authored
This reflects the actual contents of the type, which is an offset into the bytecode (or certain marker values). Historically, in the days of FCG the bailout id used to refer to node ids - this is why certain tracing output still calls the bailout id 'node id' and 'ast id'. These spots will be fixed in a follow-up CL. This change is mechanical: git grep -l BailoutId | while read f; do \ sed -i 's/BailoutId/BytecodeOffset/g' $f; done With a manual component of updating the DeoptimizationData method name from 'BytecodeOffset' to 'GetBytecodeOffset'. Bug: v8:11332 Change-Id: I956b947a480bf52263159c0eb1e895360bcbe6d2 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2639754 Commit-Queue: Jakob Gruber <jgruber@chromium.org> Reviewed-by:
Nico Hartmann <nicohartmann@chromium.org> Reviewed-by:
Mythri Alle <mythria@chromium.org> Cr-Commit-Position: refs/heads/master@{#72189}
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- 19 Jan, 2021 1 commit
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Ross McIlroy authored
If a register is used for both input and output by a SAME_INPUT_OUTPUT operand, then it represents a different virtual register for the end use-position of an instruction (since that will become the output's virtual register). It therefore can't be used to represent the input virtual register for any input operands that are USED_AT_END. BUG=chromium:1163715,v8:9684 Change-Id: I8dc0008ba81d5f1d0e38091b6dc013725c62b1b4 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2632700Reviewed-by:
Santiago Aboy Solanes <solanes@chromium.org> Commit-Queue: Ross McIlroy <rmcilroy@chromium.org> Cr-Commit-Position: refs/heads/master@{#72149}
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- 15 Jan, 2021 1 commit
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Bill Budge authored
This is a reland of 2f3cda58 GetFirstUnusedStackSlot is restored, and used for finding the padding slot location, if any. Original change's description: > [compiler] Rework calculation to start of return slots > > - Changes GetOffsetToReturns to take into account return slot padding > and argument padding. > - Changes GetStackParameterDelta to use GetOffsetToReturns for the SP > delta calculation. > - Removes GetFirstUnusedStackSlot. > > Change-Id: I13df72e86750c62798bae262f0560cf1d7f981db > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2593306 > Commit-Queue: Bill Budge <bbudge@chromium.org> > Reviewed-by: Andreas Haas <ahaas@chromium.org> > Reviewed-by: Georg Neis <neis@chromium.org> > Cr-Commit-Position: refs/heads/master@{#72078} Change-Id: I954d7e7487728dbd6a545a6c84efb8f8f65d894d Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2626979Reviewed-by:
Georg Neis <neis@chromium.org> Reviewed-by:
Andreas Haas <ahaas@chromium.org> Commit-Queue: Bill Budge <bbudge@chromium.org> Cr-Commit-Position: refs/heads/master@{#72115}
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- 13 Jan, 2021 2 commits
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Deepti Gandluri authored
This reverts commit 2f3cda58. Reason for revert: Failing tests on V8 Linux - arm64 - sim - MSAN https://ci.chromium.org/p/v8/builders/ci/V8%20Linux%20-%20arm64%20-%20sim%20-%20MSAN/36207? Original change's description: > [compiler] Rework calculation to start of return slots > > - Changes GetOffsetToReturns to take into account return slot padding > and argument padding. > - Changes GetStackParameterDelta to use GetOffsetToReturns for the SP > delta calculation. > - Removes GetFirstUnusedStackSlot. > > Change-Id: I13df72e86750c62798bae262f0560cf1d7f981db > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2593306 > Commit-Queue: Bill Budge <bbudge@chromium.org> > Reviewed-by: Andreas Haas <ahaas@chromium.org> > Reviewed-by: Georg Neis <neis@chromium.org> > Cr-Commit-Position: refs/heads/master@{#72078} TBR=bbudge@chromium.org,neis@chromium.org,ahaas@chromium.org Change-Id: I2b35efcd27a5677ed56cff5c4096ccc91fd18209 No-Presubmit: true No-Tree-Checks: true No-Try: true Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2627910Reviewed-by:
Deepti Gandluri <gdeepti@chromium.org> Commit-Queue: Deepti Gandluri <gdeepti@chromium.org> Cr-Commit-Position: refs/heads/master@{#72079}
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Bill Budge authored
- Changes GetOffsetToReturns to take into account return slot padding and argument padding. - Changes GetStackParameterDelta to use GetOffsetToReturns for the SP delta calculation. - Removes GetFirstUnusedStackSlot. Change-Id: I13df72e86750c62798bae262f0560cf1d7f981db Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2593306 Commit-Queue: Bill Budge <bbudge@chromium.org> Reviewed-by:
Andreas Haas <ahaas@chromium.org> Reviewed-by:
Georg Neis <neis@chromium.org> Cr-Commit-Position: refs/heads/master@{#72078}
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- 11 Jan, 2021 1 commit
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Paolo Severini authored
Change-Id: I2c1dfb7fbcf9a23d9e156dc3918fb88140885195 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2614721Reviewed-by:
Nico Hartmann <nicohartmann@chromium.org> Reviewed-by:
Andreas Haas <ahaas@chromium.org> Commit-Queue: Paolo Severini <paolosev@microsoft.com> Cr-Commit-Position: refs/heads/master@{#72003}
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- 16 Dec, 2020 1 commit
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Manos Koukoutos authored
LoopExitValue nodes can be used as inputs to Phis in loop optimizations. To do this, we need to know the machine representation that needs to be passed to the new Phi node. This CL adds a MachineRepresentation argument to LoopExitValue nodes, as well as a helper to extract it. Since the MachineRepresentation is not used by JS compilation, nodes generated during JS compilation are passed kTagged as a default value. Change-Id: I925f382d5e6988d8fad3de7a6db231e871d6ed36 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2578983 Commit-Queue: Manos Koukoutos <manoskouk@chromium.org> Reviewed-by:
Georg Neis (ooo until January 5) <neis@chromium.org> Cr-Commit-Position: refs/heads/master@{#71798}
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- 24 Nov, 2020 1 commit
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Georg Neis authored
Change-Id: Ib1855adbf0292381f2b279d5b44fbddff551a4d5 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2557499 Auto-Submit: Georg Neis <neis@chromium.org> Commit-Queue: Nico Hartmann <nicohartmann@chromium.org> Reviewed-by:
Nico Hartmann <nicohartmann@chromium.org> Cr-Commit-Position: refs/heads/master@{#71365}
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- 09 Nov, 2020 1 commit
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Zhi An Ng authored
Clean up src/wasm and test/ Bug: v8:11074 Change-Id: I1b3d3475a0fbfafe75bb49acfd851f8bd5af5182 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2519183Reviewed-by:
Clemens Backes <clemensb@chromium.org> Commit-Queue: Zhi An Ng <zhin@chromium.org> Cr-Commit-Position: refs/heads/master@{#71025}
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