9d3dc6f219
FunctionEntry StackChecks is one of the two cases where we generate a StackCheck bytecode. In these cases, we do stack check against the js limit (not to be confused with the real js limit). Their purpose is to be able to interrupt the running code. We can omit the FunctionEntry StackCheck by embedding its code into the InterpreterEntryTrampoline builtin. We save one bytecode per interpreted function. This change has rippling effects for optimized code, as well as the deoptimizer. Bug: v8:10149, v8:9977, v8:9960 Change-Id: I6156de48b3bc0b519dd21190a8e6214fbe96c78d Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1914218 Reviewed-by: Jakob Gruber <jgruber@chromium.org> Reviewed-by: Ross McIlroy <rmcilroy@chromium.org> Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org> Cr-Commit-Position: refs/heads/master@{#66206}
190 lines
5.4 KiB
Plaintext
190 lines
5.4 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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private methods: yes
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---
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snippet: "
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{
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class A {
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#a() { return 1; }
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}
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}
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"
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frame size: 7
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parameter count: 1
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bytecode array length: 51
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bytecodes: [
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/* 30 E> */ B(CreateBlockContext), U8(0),
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B(PushContext), R(1),
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B(LdaConstant), U8(2),
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B(Star), R(3),
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B(CallRuntime), U16(Runtime::kCreatePrivateBrandSymbol), R(3), U8(1),
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B(StaCurrentContextSlot), U8(3),
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B(LdaTheHole),
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B(Star), R(6),
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B(CreateClosure), U8(3), U8(0), U8(2),
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B(Star), R(2),
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B(LdaConstant), U8(1),
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B(Star), R(4),
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B(Mov), R(2), R(5),
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B(CallRuntime), U16(Runtime::kDefineClass), R(4), U8(3),
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B(Star), R(4),
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B(CreateClosure), U8(4), U8(1), U8(2),
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B(StaCurrentContextSlot), U8(2),
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B(PopContext), R(1),
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B(Mov), R(5), R(0),
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B(LdaUndefined),
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/* 77 S> */ B(Return),
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]
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constant pool: [
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SCOPE_INFO_TYPE,
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FIXED_ARRAY_TYPE,
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ONE_BYTE_INTERNALIZED_STRING_TYPE ["A"],
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SHARED_FUNCTION_INFO_TYPE,
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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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{
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class D {
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#d() { return 1; }
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}
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class E extends D {
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#e() { return 2; }
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}
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}
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"
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frame size: 8
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parameter count: 1
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bytecode array length: 100
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bytecodes: [
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/* 30 E> */ B(CreateBlockContext), U8(0),
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B(PushContext), R(2),
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B(LdaConstant), U8(2),
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B(Star), R(4),
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B(CallRuntime), U16(Runtime::kCreatePrivateBrandSymbol), R(4), U8(1),
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B(StaCurrentContextSlot), U8(3),
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B(LdaTheHole),
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B(Star), R(7),
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B(CreateClosure), U8(3), U8(0), U8(2),
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B(Star), R(3),
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B(LdaConstant), U8(1),
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B(Star), R(5),
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B(Mov), R(3), R(6),
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B(CallRuntime), U16(Runtime::kDefineClass), R(5), U8(3),
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B(Star), R(5),
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B(CreateClosure), U8(4), U8(1), U8(2),
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B(StaCurrentContextSlot), U8(2),
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B(PopContext), R(2),
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B(Mov), R(6), R(0),
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/* 38 E> */ B(CreateBlockContext), U8(5),
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B(PushContext), R(2),
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B(LdaConstant), U8(7),
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B(Star), R(4),
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B(CallRuntime), U16(Runtime::kCreatePrivateBrandSymbol), R(4), U8(1),
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B(StaCurrentContextSlot), U8(3),
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/* 93 E> */ B(CreateClosure), U8(8), U8(2), U8(2),
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B(Star), R(3),
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B(LdaConstant), U8(6),
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B(Star), R(5),
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B(Mov), R(3), R(6),
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B(Mov), R(0), R(7),
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B(CallRuntime), U16(Runtime::kDefineClass), R(5), U8(3),
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B(Star), R(5),
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B(CreateClosure), U8(9), U8(3), U8(2),
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B(StaCurrentContextSlot), U8(2),
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B(PopContext), R(2),
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B(Mov), R(6), R(1),
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B(LdaUndefined),
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/* 126 S> */ B(Return),
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]
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constant pool: [
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SCOPE_INFO_TYPE,
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FIXED_ARRAY_TYPE,
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ONE_BYTE_INTERNALIZED_STRING_TYPE ["D"],
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SHARED_FUNCTION_INFO_TYPE,
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SHARED_FUNCTION_INFO_TYPE,
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SCOPE_INFO_TYPE,
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FIXED_ARRAY_TYPE,
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ONE_BYTE_INTERNALIZED_STRING_TYPE ["E"],
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SHARED_FUNCTION_INFO_TYPE,
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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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{
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class A { foo() {} }
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class C extends A {
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#m() { return super.foo; }
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}
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}
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"
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frame size: 8
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parameter count: 1
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bytecode array length: 97
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bytecodes: [
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/* 30 E> */ B(CreateBlockContext), U8(0),
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B(PushContext), R(2),
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B(LdaTheHole),
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B(Star), R(6),
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B(CreateClosure), U8(2), U8(0), U8(2),
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B(Star), R(3),
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B(LdaConstant), U8(1),
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B(Star), R(4),
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B(CreateClosure), U8(3), U8(1), U8(2),
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B(Star), R(7),
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B(Mov), R(3), R(5),
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B(CallRuntime), U16(Runtime::kDefineClass), R(4), U8(4),
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B(Star), R(4),
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B(PopContext), R(2),
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B(Mov), R(5), R(0),
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/* 38 E> */ B(CreateBlockContext), U8(4),
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B(PushContext), R(2),
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B(LdaConstant), U8(6),
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B(Star), R(4),
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B(CallRuntime), U16(Runtime::kCreatePrivateBrandSymbol), R(4), U8(1),
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B(StaCurrentContextSlot), U8(3),
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/* 77 E> */ B(CreateClosure), U8(7), U8(2), U8(2),
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B(Star), R(3),
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B(LdaConstant), U8(5),
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B(Star), R(5),
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B(Mov), R(3), R(6),
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B(Mov), R(0), R(7),
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B(CallRuntime), U16(Runtime::kDefineClass), R(5), U8(3),
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B(Star), R(5),
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B(CreateClosure), U8(8), U8(3), U8(2),
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B(StaCurrentContextSlot), U8(2),
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B(Star), R(6),
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B(Ldar), R(5),
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B(StaNamedProperty), R(6), U8(9), U8(0),
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B(PopContext), R(2),
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B(Mov), R(3), R(1),
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B(LdaUndefined),
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/* 118 S> */ B(Return),
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]
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constant pool: [
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SCOPE_INFO_TYPE,
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FIXED_ARRAY_TYPE,
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SHARED_FUNCTION_INFO_TYPE,
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SHARED_FUNCTION_INFO_TYPE,
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SCOPE_INFO_TYPE,
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FIXED_ARRAY_TYPE,
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ONE_BYTE_INTERNALIZED_STRING_TYPE ["C"],
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SHARED_FUNCTION_INFO_TYPE,
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SHARED_FUNCTION_INFO_TYPE,
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SYMBOL_TYPE,
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]
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handlers: [
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]
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