08f68102f8
Declare Variables with a name and position, rather than by passing through a VariableProxy. This allows us to not create dummy proxies for things like function declarations, and allows us to consider those declarations unused. As a side-effect, we also have to check if a variable is unused in the bytecode generator (as it will no longer be allocated), and we end up skip generating code/SFIs for dead variables/functions. Change-Id: I4c2c872473f23e124f9456b4b92f87159658f8e0 Reviewed-on: https://chromium-review.googlesource.com/c/1414916 Commit-Queue: Leszek Swirski <leszeks@chromium.org> Reviewed-by: Yang Guo <yangguo@chromium.org> Reviewed-by: Toon Verwaest <verwaest@chromium.org> Reviewed-by: Ross McIlroy <rmcilroy@chromium.org> Cr-Commit-Position: refs/heads/master@{#59088}
112 lines
2.5 KiB
Plaintext
112 lines
2.5 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: 1
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parameter count: 1
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bytecode array length: 15
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bytecodes: [
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B(CreateFunctionContext), U8(0), U8(1),
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B(PushContext), R(0),
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B(LdaTheHole),
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B(StaCurrentContextSlot), U8(4),
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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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SCOPE_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: 1
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parameter count: 1
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bytecode array length: 16
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bytecodes: [
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B(CreateFunctionContext), U8(0), U8(1),
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B(PushContext), R(0),
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B(LdaTheHole),
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B(StaCurrentContextSlot), U8(4),
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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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/* 81 S> */ B(Return),
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]
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constant pool: [
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SCOPE_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: 2
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parameter count: 1
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bytecode array length: 25
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bytecodes: [
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B(CreateFunctionContext), U8(0), U8(1),
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B(PushContext), R(0),
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B(LdaTheHole),
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B(StaCurrentContextSlot), U8(4),
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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(1),
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B(LdaCurrentContextSlot), U8(4),
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/* 45 E> */ B(ThrowReferenceErrorIfHole), U8(1),
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B(Ldar), R(1),
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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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SCOPE_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: 1
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parameter count: 1
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bytecode array length: 19
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bytecodes: [
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B(CreateFunctionContext), U8(0), U8(1),
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B(PushContext), R(0),
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B(LdaTheHole),
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B(StaCurrentContextSlot), U8(4),
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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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SCOPE_INFO_TYPE,
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]
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handlers: [
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]
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