- 11 Feb, 2020 1 commit
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Nico Hartmann authored
This CL significantly reduces the size of CSA files generated from torque by introducing only those Phis at block entry that are required and otherwise uses defined values directly. To do so it does: - Define a DefinitionLocation that represents where a value is defined. - For each block compute all the definitions that reach that block and introduce a phi iff the reaching definitions for a value are not the same for all predecessor blocks. - In CSAGenerator map all DefinitionLocations to variables, such that if the same value is used in multiple blocks, it is mapped to the same variable without the need to pass it along the jump. This reduces both the arguments passed to Goto, Branch, ... and the variables that need to be passed to Bind when the block's label is bound. This reduces the number of temporary variables significantly. Temporaries are declared outside of blocks now in order to be accessible from other blocks. Drive-by changes: - Sequences of SetSourcePosition calls are merged if no output is generated between them. - Dead blocks are no longer generated in release builds. Bug: v8:9861 Change-Id: I5c30e5376e93c424c3ebfc5144a08592d77ae61f Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2037444 Commit-Queue: Nico Hartmann <nicohartmann@chromium.org> Reviewed-by: Tobias Tebbi <tebbi@chromium.org> Cr-Commit-Position: refs/heads/master@{#66225}
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- 18 Feb, 2019 1 commit
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Mike Stanton authored
Reason for revert/reland: UBSan complained of unaligned reads. To improve the Torque debugging experience, we can add source positions for each line. This information is carried through the generated CSA code (in <output directory>/gen/torque-generated/*.cc) and embedded as SourcePositions in the Code object. At snapshot time, these SourcePositions are stripped from the Code object and turned into platform-appropriate line number debug information. At this time on Linux, you'll need to build with "is_clang=false" in order to use GCC, because crucial steps are missing in Clang's ability to convey the information into the binary successfully. This CL also introduces a flag to control the existing source information in CSA code. --enable-source-at-csa-bind is now set to false by default because it's a bit confusing to "hop" between source lines in .TQ files and in .CC files. I expect to continue making adjustments there, as I want to provide helpful debugging aids at the CSA level as well as the Torque level. The current configuration prioritizes Torque. TBR=tebbi@chromium.org Bug: v8:8418 Change-Id: Idb80467d3679ec2361386fe9b67597b93d7f72cf Reviewed-on: https://chromium-review.googlesource.com/c/1475763Reviewed-by: Michael Stanton <mvstanton@chromium.org> Reviewed-by: Jakob Gruber <jgruber@chromium.org> Commit-Queue: Michael Stanton <mvstanton@chromium.org> Cr-Commit-Position: refs/heads/master@{#59657}
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- 15 Feb, 2019 2 commits
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Michael Stanton authored
This reverts commit 0a24e67a. Reason for revert: Broke Linux 64 UBSan build with unaligned read in the snapshot. Will investigate... Original change's description: > [Torque] Add source positions for Torque files > > To improve the Torque debugging experience, we can add source positions > for each line. This information is carried through the generated > CSA code (in <output directory>/gen/torque-generated/*.cc) and > embedded as SourcePositions in the Code object. > > At snapshot time, these SourcePositions are stripped from the Code > object and turned into platform-appropriate line number debug > information. > > At this time on Linux, you'll need to build with "is_clang=false" > in order to use GCC, because crucial steps are missing in Clang's > ability to convey the information into the binary successfully. > > This CL also introduces a flag to control the existing source > information in CSA code. --enable-source-at-csa-bind is now set > to false by default because it's a bit confusing to "hop" between > source lines in .TQ files and in .CC files. I expect to continue > making adjustments there, as I want to provide helpful > debugging aids at the CSA level as well as the Torque level. > The current configuration prioritizes Torque. > > A detailed guide on usage to follow (also on v8.dev). > > Bug: v8:8418 > Change-Id: Ib4226877ce4cae451bb4d0c546927e89f4e66b58 > Reviewed-on: https://chromium-review.googlesource.com/c/1475473 > Reviewed-by: Tobias Tebbi <tebbi@chromium.org> > Commit-Queue: Michael Stanton <mvstanton@chromium.org> > Cr-Commit-Position: refs/heads/master@{#59636} TBR=mvstanton@chromium.org,tebbi@chromium.org Change-Id: I4ccf94dfdb8b2ba238a60db9ecc8e3ceebef2699 No-Presubmit: true No-Tree-Checks: true No-Try: true Bug: v8:8418 Reviewed-on: https://chromium-review.googlesource.com/c/1475757Reviewed-by: Michael Stanton <mvstanton@chromium.org> Commit-Queue: Michael Stanton <mvstanton@chromium.org> Cr-Commit-Position: refs/heads/master@{#59637}
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Mike Stanton authored
To improve the Torque debugging experience, we can add source positions for each line. This information is carried through the generated CSA code (in <output directory>/gen/torque-generated/*.cc) and embedded as SourcePositions in the Code object. At snapshot time, these SourcePositions are stripped from the Code object and turned into platform-appropriate line number debug information. At this time on Linux, you'll need to build with "is_clang=false" in order to use GCC, because crucial steps are missing in Clang's ability to convey the information into the binary successfully. This CL also introduces a flag to control the existing source information in CSA code. --enable-source-at-csa-bind is now set to false by default because it's a bit confusing to "hop" between source lines in .TQ files and in .CC files. I expect to continue making adjustments there, as I want to provide helpful debugging aids at the CSA level as well as the Torque level. The current configuration prioritizes Torque. A detailed guide on usage to follow (also on v8.dev). Bug: v8:8418 Change-Id: Ib4226877ce4cae451bb4d0c546927e89f4e66b58 Reviewed-on: https://chromium-review.googlesource.com/c/1475473Reviewed-by: Tobias Tebbi <tebbi@chromium.org> Commit-Queue: Michael Stanton <mvstanton@chromium.org> Cr-Commit-Position: refs/heads/master@{#59636}
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- 22 Nov, 2018 1 commit
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Daniel Clifford authored
This is a reland of 74a0ad7d Original change's description: > [torque] Implement intrinsics support > > Also add the first intrinsic and usage of it: %RawCast > > Bug: v8:7793 > Change-Id: Id1e3288e8bab6adb510731076a39590e8fd156be > Reviewed-on: https://chromium-review.googlesource.com/c/1344152 > Commit-Queue: Daniel Clifford <danno@chromium.org> > Reviewed-by: Tobias Tebbi <tebbi@chromium.org> > Cr-Commit-Position: refs/heads/master@{#57692} Bug: v8:7793 Change-Id: I315c7d44f265d0f937598e8afb1c28b08d6a23da Reviewed-on: https://chromium-review.googlesource.com/c/1347472Reviewed-by: Daniel Clifford <danno@chromium.org> Reviewed-by: Tobias Tebbi <tebbi@chromium.org> Commit-Queue: Tobias Tebbi <tebbi@chromium.org> Cr-Commit-Position: refs/heads/master@{#57715}
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- 21 Nov, 2018 2 commits
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Daniel Clifford authored
This reverts commit 74a0ad7d. Reason for revert: Presubmit tests fail Original change's description: > [torque] Implement intrinsics support > > Also add the first intrinsic and usage of it: %RawCast > > Bug: v8:7793 > Change-Id: Id1e3288e8bab6adb510731076a39590e8fd156be > Reviewed-on: https://chromium-review.googlesource.com/c/1344152 > Commit-Queue: Daniel Clifford <danno@chromium.org> > Reviewed-by: Tobias Tebbi <tebbi@chromium.org> > Cr-Commit-Position: refs/heads/master@{#57692} TBR=danno@chromium.org,tebbi@chromium.org Change-Id: Ief78187f2edaf80c715dea676cbd40edd747ad21 No-Presubmit: true No-Tree-Checks: true No-Try: true Bug: v8:7793 Reviewed-on: https://chromium-review.googlesource.com/c/1346500Reviewed-by: Daniel Clifford <danno@chromium.org> Commit-Queue: Daniel Clifford <danno@chromium.org> Cr-Commit-Position: refs/heads/master@{#57694}
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Daniel Clifford authored
Also add the first intrinsic and usage of it: %RawCast Bug: v8:7793 Change-Id: Id1e3288e8bab6adb510731076a39590e8fd156be Reviewed-on: https://chromium-review.googlesource.com/c/1344152 Commit-Queue: Daniel Clifford <danno@chromium.org> Reviewed-by: Tobias Tebbi <tebbi@chromium.org> Cr-Commit-Position: refs/heads/master@{#57692}
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- 31 Oct, 2018 3 commits
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Daniel Clifford authored
This is a reland of 0f15ed05 Original change's description: > [torque]: Implement catch handlers for try blocks > > In addition (and in combination), try statements now support "catch" > clauses at the end that catch JavaScript exceptions throw by any builtin > or runtime function contained in the try block: > > try { > ThrowTypeError(context, ...); > } > catch (e) { > // e has type Object > } > > Bug: v8:7793 > Change-Id: Ie285ff888c49c112276240f7360f70c8b540ed19 > Reviewed-on: https://chromium-review.googlesource.com/c/1302055 > Commit-Queue: Daniel Clifford <danno@chromium.org> > Reviewed-by: Tobias Tebbi <tebbi@chromium.org> > Reviewed-by: Michael Starzinger <mstarzinger@chromium.org> > Cr-Commit-Position: refs/heads/master@{#57169} Bug: v8:7793 Change-Id: I3c4182303acfdfa625654976bec372cf531d954f Reviewed-on: https://chromium-review.googlesource.com/c/1310295Reviewed-by: Maya Lekova <mslekova@chromium.org> Reviewed-by: Daniel Clifford <danno@chromium.org> Commit-Queue: Maya Lekova <mslekova@chromium.org> Cr-Commit-Position: refs/heads/master@{#57184}
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Maya Lekova authored
This reverts commit 0f15ed05. Reason for revert: Braking Node.js integration, see https://ci.chromium.org/p/v8/builders/luci.v8.ci/V8%20Linux64%20-%20node.js%20integration/3917 Original change's description: > [torque]: Implement catch handlers for try blocks > > In addition (and in combination), try statements now support "catch" > clauses at the end that catch JavaScript exceptions throw by any builtin > or runtime function contained in the try block: > > try { > ThrowTypeError(context, ...); > } > catch (e) { > // e has type Object > } > > Bug: v8:7793 > Change-Id: Ie285ff888c49c112276240f7360f70c8b540ed19 > Reviewed-on: https://chromium-review.googlesource.com/c/1302055 > Commit-Queue: Daniel Clifford <danno@chromium.org> > Reviewed-by: Tobias Tebbi <tebbi@chromium.org> > Reviewed-by: Michael Starzinger <mstarzinger@chromium.org> > Cr-Commit-Position: refs/heads/master@{#57169} TBR=danno@chromium.org,mstarzinger@chromium.org,tebbi@chromium.org Change-Id: Ib9e3155ef46cc46851c4ca8a2624fd7634238e13 No-Presubmit: true No-Tree-Checks: true No-Try: true Bug: v8:7793 Reviewed-on: https://chromium-review.googlesource.com/c/1310197Reviewed-by: Maya Lekova <mslekova@chromium.org> Commit-Queue: Maya Lekova <mslekova@chromium.org> Cr-Commit-Position: refs/heads/master@{#57177}
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Daniel Clifford authored
In addition (and in combination), try statements now support "catch" clauses at the end that catch JavaScript exceptions throw by any builtin or runtime function contained in the try block: try { ThrowTypeError(context, ...); } catch (e) { // e has type Object } Bug: v8:7793 Change-Id: Ie285ff888c49c112276240f7360f70c8b540ed19 Reviewed-on: https://chromium-review.googlesource.com/c/1302055 Commit-Queue: Daniel Clifford <danno@chromium.org> Reviewed-by: Tobias Tebbi <tebbi@chromium.org> Reviewed-by: Michael Starzinger <mstarzinger@chromium.org> Cr-Commit-Position: refs/heads/master@{#57169}
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- 04 Oct, 2018 1 commit
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Tobias Tebbi authored
Bug: v8:7793 Change-Id: I5261122faf422987968ee1e405966f878ff910a1 Reviewed-on: https://chromium-review.googlesource.com/c/1245766 Commit-Queue: Tobias Tebbi <tebbi@chromium.org> Reviewed-by: Daniel Clifford <danno@chromium.org> Reviewed-by: Jaroslav Sevcik <jarin@chromium.org> Cr-Commit-Position: refs/heads/master@{#56391}
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