c48096d442
This is a reland of c07c02e1c4
Original change's description:
> [runtime] Remove extension slots from context objects
>
> Context objects have an extension slot, which contains further
> additional data that depends on the type of the context.
>
> This CL removes the extension slot from contexts that don't need
> them, hence reducing memory.
>
> The following contexts will still have an extension slot: native,
> module, await, block and with contexts. See objects/contexts.h for
> what the slot is used for.
> The following contexts will not have an extension slot anymore (they
> were not used before): script, catch and builtin contexts.
> Eval and function contexts only have the extension slot if they
> contain a sloppy eval.
>
> Bug: v8:9744
> Change-Id: I8ca56c22fa02437bbac392ea72174ebfca80e030
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1863191
> Commit-Queue: Victor Gomes <victorgomes@google.com>
> Reviewed-by: Toon Verwaest <verwaest@chromium.org>
> Reviewed-by: Jakob Gruber <jgruber@chromium.org>
> Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
> Reviewed-by: Leszek Swirski <leszeks@chromium.org>
> Reviewed-by: Peter Marshall <petermarshall@chromium.org>
> Auto-Submit: Victor Gomes <victorgomes@google.com>
> Cr-Commit-Position: refs/heads/master@{#64372}
TBR=verwaest@chromium.org,jgruber@chromium.org,ulan@chromium.org,leszeks@chromium.org,petermarshall@chromium.org
Bug: v8:9744
Change-Id: I0749cc2d8f59940c25841736634a70047116d647
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1869192
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Peter Marshall <petermarshall@chromium.org>
Commit-Queue: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Auto-Submit: Victor Gomes <victorgomes@google.com>
Cr-Commit-Position: refs/heads/master@{#64380}
193 lines
5.5 KiB
Plaintext
193 lines
5.5 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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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: 52
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bytecodes: [
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/* 30 E> */ B(StackCheck),
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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::kCreatePrivateNameSymbol), 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: 101
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bytecodes: [
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/* 30 E> */ B(StackCheck),
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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::kCreatePrivateNameSymbol), 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::kCreatePrivateNameSymbol), 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: 98
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bytecodes: [
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/* 30 E> */ B(StackCheck),
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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::kCreatePrivateNameSymbol), 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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