v8/test/cctest/interpreter/bytecode_expectations/TryCatch.golden

Ignoring revisions in .git-blame-ignore-revs. Click here to bypass and see the normal blame view.

86 lines
2.0 KiB
Plaintext
Raw Normal View History

#
# Autogenerated by generate-bytecode-expectations.
#
---
wrap: yes
---
snippet: "
try { return 1; } catch(e) { return 2; }
"
frame size: 2
parameter count: 1
Reland "[ignition] Skip binding dead labels" This is a reland of 35269f77f8a7fb5360717e2cb470a6ef1637944e Switches on an expression that unconditionally throws would have all their case statements dead, causing a DCHECK error in the SwitchBuilder. This fixes up the DCHECK to allow dead labels. Original change's description: > [ignition] Skip binding dead labels > > BytecodeLabels for forward jumps may create a dead basic block if their > corresponding jump was elided (due to it dead code elimination). We can > avoid generating such dead basic blocks by skipping the label bind when > no corresponding jump has been observed. This works because all jumps > except JumpLoop are forward jumps, so we only have to special case one > Bind for loop headers to bind unconditionally. > > Since Binds are now conditional on a jump existing, we can no longer rely > on using Bind to get the current offset (e.g. at the beginning of a try > block). Instead, we now expose the current offset in the bytecode array > writer. Conveniently, this means that we can be a bit smarter about basic > blocks around these statements. > > As a drive-by, remove the unused Bind(target,label) function. > > Bug: chromium:934166 > Change-Id: I532aa452fb083560d07b90da99caca0b1d082aa3 > Reviewed-on: https://chromium-review.googlesource.com/c/1488763 > Commit-Queue: Leszek Swirski <leszeks@chromium.org> > Reviewed-by: Ross McIlroy <rmcilroy@chromium.org> > Cr-Commit-Position: refs/heads/master@{#59942} TBR=rmcilroy@chromium.org Bug: chromium:934166 Change-Id: If6eab4162106717ce64a2dc477000c6a76354cb4 Reviewed-on: https://chromium-review.googlesource.com/c/1494535 Reviewed-by: Leszek Swirski <leszeks@chromium.org> Commit-Queue: Leszek Swirski <leszeks@chromium.org> Cr-Commit-Position: refs/heads/master@{#59948}
2019-02-28 13:34:26 +00:00
bytecode array length: 23
bytecodes: [
/* 30 E> */ B(StackCheck),
B(Mov), R(context), R(0),
/* 40 S> */ B(LdaSmi), I8(1),
[inspector] improve return position of explicit return in non-async function Goal of this CL: explicit return from non-async function has position after return expression as return position (will unblock [1]). BytecodeArrayBuilder has SetStatementPosition and SetExpressionPosition methods. If one of these methods is called then next generated bytecode will get passed position. It's general treatment for most cases. Unfortunately it doesn't work for Returns: - debugger requires source positions exactly on kReturn bytecode in stepping implementation, - BytecodeGenerator::BuildReturn and BytecodeGenerator::BuildAsyncReturn generates more then one bytecode and general solution will put return position on first generated bytecode, - it's not easy to split BuildReturn function into two parts to allow something like following in BytecodeGenerator::VisitReturnStatement since generated bytecodes are actually controlled by execution_control(). ..->BuildReturnPrologue(); ..->SetReturnPosition(stmt); ..->Return(); In this CL we pass ReturnStatement through ExecutionControl and use it for position when we emit return bytecode right here. So this CL only will improve return position for returns inside of non-async functions, I'll address async functions later. [1] https://chromium-review.googlesource.com/c/543161/ Change-Id: Iede512c120b00c209990bf50c20e7d23dc0d65db Reviewed-on: https://chromium-review.googlesource.com/560738 Commit-Queue: Aleksey Kozyatinskiy <kozyatinskiy@chromium.org> Reviewed-by: Adam Klein <adamk@chromium.org> Reviewed-by: Michael Starzinger <mstarzinger@chromium.org> Reviewed-by: Ross McIlroy <rmcilroy@chromium.org> Reviewed-by: Jakob Gruber <jgruber@chromium.org> Cr-Commit-Position: refs/heads/master@{#46687}
2017-07-14 17:50:09 +00:00
/* 49 S> */ B(Return),
B(Star), R(1),
B(CreateCatchContext), R(1), U8(0),
B(Star), R(0),
B(LdaTheHole),
B(SetPendingMessage),
B(Ldar), R(0),
B(PushContext), R(1),
/* 63 S> */ B(LdaSmi), I8(2),
[inspector] improve return position of explicit return in non-async function Goal of this CL: explicit return from non-async function has position after return expression as return position (will unblock [1]). BytecodeArrayBuilder has SetStatementPosition and SetExpressionPosition methods. If one of these methods is called then next generated bytecode will get passed position. It's general treatment for most cases. Unfortunately it doesn't work for Returns: - debugger requires source positions exactly on kReturn bytecode in stepping implementation, - BytecodeGenerator::BuildReturn and BytecodeGenerator::BuildAsyncReturn generates more then one bytecode and general solution will put return position on first generated bytecode, - it's not easy to split BuildReturn function into two parts to allow something like following in BytecodeGenerator::VisitReturnStatement since generated bytecodes are actually controlled by execution_control(). ..->BuildReturnPrologue(); ..->SetReturnPosition(stmt); ..->Return(); In this CL we pass ReturnStatement through ExecutionControl and use it for position when we emit return bytecode right here. So this CL only will improve return position for returns inside of non-async functions, I'll address async functions later. [1] https://chromium-review.googlesource.com/c/543161/ Change-Id: Iede512c120b00c209990bf50c20e7d23dc0d65db Reviewed-on: https://chromium-review.googlesource.com/560738 Commit-Queue: Aleksey Kozyatinskiy <kozyatinskiy@chromium.org> Reviewed-by: Adam Klein <adamk@chromium.org> Reviewed-by: Michael Starzinger <mstarzinger@chromium.org> Reviewed-by: Ross McIlroy <rmcilroy@chromium.org> Reviewed-by: Jakob Gruber <jgruber@chromium.org> Cr-Commit-Position: refs/heads/master@{#46687}
2017-07-14 17:50:09 +00:00
/* 72 S> */ B(Return),
]
constant pool: [
SCOPE_INFO_TYPE,
]
handlers: [
Reland "[ignition] Skip binding dead labels" This is a reland of 35269f77f8a7fb5360717e2cb470a6ef1637944e Switches on an expression that unconditionally throws would have all their case statements dead, causing a DCHECK error in the SwitchBuilder. This fixes up the DCHECK to allow dead labels. Original change's description: > [ignition] Skip binding dead labels > > BytecodeLabels for forward jumps may create a dead basic block if their > corresponding jump was elided (due to it dead code elimination). We can > avoid generating such dead basic blocks by skipping the label bind when > no corresponding jump has been observed. This works because all jumps > except JumpLoop are forward jumps, so we only have to special case one > Bind for loop headers to bind unconditionally. > > Since Binds are now conditional on a jump existing, we can no longer rely > on using Bind to get the current offset (e.g. at the beginning of a try > block). Instead, we now expose the current offset in the bytecode array > writer. Conveniently, this means that we can be a bit smarter about basic > blocks around these statements. > > As a drive-by, remove the unused Bind(target,label) function. > > Bug: chromium:934166 > Change-Id: I532aa452fb083560d07b90da99caca0b1d082aa3 > Reviewed-on: https://chromium-review.googlesource.com/c/1488763 > Commit-Queue: Leszek Swirski <leszeks@chromium.org> > Reviewed-by: Ross McIlroy <rmcilroy@chromium.org> > Cr-Commit-Position: refs/heads/master@{#59942} TBR=rmcilroy@chromium.org Bug: chromium:934166 Change-Id: If6eab4162106717ce64a2dc477000c6a76354cb4 Reviewed-on: https://chromium-review.googlesource.com/c/1494535 Reviewed-by: Leszek Swirski <leszeks@chromium.org> Commit-Queue: Leszek Swirski <leszeks@chromium.org> Cr-Commit-Position: refs/heads/master@{#59948}
2019-02-28 13:34:26 +00:00
[4, 7, 7],
]
---
snippet: "
var a;
try { a = 1 } catch(e1) {};
try { a = 2 } catch(e2) { a = 3 }
"
frame size: 3
parameter count: 1
bytecode array length: 55
bytecodes: [
/* 30 E> */ B(StackCheck),
B(Mov), R(context), R(1),
/* 47 S> */ B(LdaSmi), I8(1),
B(Star), R(0),
B(Jump), U8(17),
B(Star), R(2),
/* 49 E> */ B(CreateCatchContext), R(2), U8(0),
B(Star), R(1),
B(LdaTheHole),
B(SetPendingMessage),
B(Ldar), R(1),
B(PushContext), R(2),
B(PopContext), R(2),
B(Mov), R(context), R(1),
/* 75 S> */ B(LdaSmi), I8(2),
B(Star), R(0),
B(Jump), U8(21),
B(Star), R(2),
/* 77 E> */ B(CreateCatchContext), R(2), U8(1),
B(Star), R(1),
B(LdaTheHole),
B(SetPendingMessage),
B(Ldar), R(1),
B(PushContext), R(2),
/* 95 S> */ B(LdaSmi), I8(3),
B(Star), R(0),
B(PopContext), R(2),
B(LdaUndefined),
/* 103 S> */ B(Return),
]
constant pool: [
SCOPE_INFO_TYPE,
SCOPE_INFO_TYPE,
]
handlers: [
[4, 8, 10],
[28, 32, 34],
]