7a9cc70492
This CL improves break locations for expressions like 'var a = <expr>'. Without CL we use <expr> position as break location for initialization statement, with this CL we use position of first character after '=' as position.
Benefits (see test for details):
- only one break in expressions which includes mix of property lookup and calls, e.g. var p = Promise.resolve().then(x => x * 2),
- removed redundant break location for expressions like: let { x, y } = { x: 1, y: 2}.
Bug: v8:5909
Change-Id: I039d911903a2826c9859710a63ab0462c992e11b
Reviewed-on: https://chromium-review.googlesource.com/513926
Commit-Queue: Aleksey Kozyatinskiy <kozyatinskiy@chromium.org>
Reviewed-by: Marja Hölttä <marja@chromium.org>
Reviewed-by: Dmitry Gozman <dgozman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45530}
123 lines
3.0 KiB
Plaintext
123 lines
3.0 KiB
Plaintext
#
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# Autogenerated by generate-bytecode-expectations.
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#
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---
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wrap: yes
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---
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snippet: "
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let x = 10; function f1() {return x;}
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"
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frame size: 2
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parameter count: 1
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bytecode array length: 20
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bytecodes: [
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B(CreateFunctionContext), U8(1),
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B(PushContext), R(1),
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B(LdaTheHole),
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B(StaCurrentContextSlot), U8(4),
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B(CreateClosure), U8(0), U8(3), U8(2),
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B(Star), R(0),
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/* 30 E> */ B(StackCheck),
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/* 42 S> */ B(LdaSmi), I8(10),
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/* 42 E> */ B(StaCurrentContextSlot), U8(4),
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B(LdaUndefined),
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/* 72 S> */ B(Return),
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]
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constant pool: [
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SHARED_FUNCTION_INFO_TYPE,
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]
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handlers: [
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]
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---
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snippet: "
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let x = 10; function f1() {return x;} return x;
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"
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frame size: 2
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parameter count: 1
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bytecode array length: 21
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bytecodes: [
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B(CreateFunctionContext), U8(1),
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B(PushContext), R(1),
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B(LdaTheHole),
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B(StaCurrentContextSlot), U8(4),
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B(CreateClosure), U8(0), U8(3), U8(2),
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B(Star), R(0),
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/* 30 E> */ B(StackCheck),
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/* 42 S> */ B(LdaSmi), I8(10),
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/* 42 E> */ B(StaCurrentContextSlot), U8(4),
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/* 72 S> */ B(LdaImmutableCurrentContextSlot), U8(4),
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/* 82 S> */ B(Return),
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]
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constant pool: [
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SHARED_FUNCTION_INFO_TYPE,
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]
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handlers: [
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]
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---
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snippet: "
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let x = (x = 20); function f1() {return x;}
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"
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frame size: 4
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parameter count: 1
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bytecode array length: 39
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bytecodes: [
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B(CreateFunctionContext), U8(1),
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B(PushContext), R(1),
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B(LdaTheHole),
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B(StaCurrentContextSlot), U8(4),
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B(CreateClosure), U8(0), U8(3), U8(2),
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B(Star), R(0),
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/* 30 E> */ B(StackCheck),
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/* 42 S> */ B(LdaSmi), I8(20),
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B(Star), R(2),
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B(LdaCurrentContextSlot), U8(4),
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B(JumpIfNotHole), U8(11),
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B(LdaConstant), U8(1),
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B(Star), R(3),
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/* 45 E> */ B(CallRuntime), U16(Runtime::kThrowReferenceError), R(3), U8(1),
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B(Ldar), R(2),
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B(StaCurrentContextSlot), U8(4),
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/* 42 E> */ B(StaCurrentContextSlot), U8(4),
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B(LdaUndefined),
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/* 78 S> */ B(Return),
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]
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constant pool: [
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SHARED_FUNCTION_INFO_TYPE,
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ONE_BYTE_INTERNALIZED_STRING_TYPE ["x"],
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]
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handlers: [
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]
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---
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snippet: "
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let x = 10; x = 20; function f1() {return x;}
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"
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frame size: 2
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parameter count: 1
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bytecode array length: 24
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bytecodes: [
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B(CreateFunctionContext), U8(1),
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B(PushContext), R(1),
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B(LdaTheHole),
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B(StaCurrentContextSlot), U8(4),
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B(CreateClosure), U8(0), U8(3), U8(2),
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B(Star), R(0),
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/* 30 E> */ B(StackCheck),
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/* 42 S> */ B(LdaSmi), I8(10),
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/* 42 E> */ B(StaCurrentContextSlot), U8(4),
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/* 46 S> */ B(LdaSmi), I8(20),
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/* 48 E> */ B(StaCurrentContextSlot), U8(4),
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B(LdaUndefined),
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/* 80 S> */ B(Return),
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]
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constant pool: [
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SHARED_FUNCTION_INFO_TYPE,
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]
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handlers: [
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]
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