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v8/test/cctest/interpreter/bytecode_expectations/ForAwaitOf.golden
Caitlin Potter 8b5b444a4c [async-await] desugar Await in BytecodeGenerator 
This includes several changes. From most to least interesting:

- No longer implement AwaitExpressions using a do-expression.
- Reduces frame-size of async generators by not allocating temporary
  variables to hold results of Await epxressions.
- Streamline and reduce generated bytecodes for Await.
- Debugger no longer emits a debug::kCallBreakLocation breakpoint for
the JS-builtin call performed for Await, and instead only emits such
a breakpoint if the operand of Await is actually a call.
- Push fewer parameters to Await* builtins, using the receiver for the
  first parameter (possible now that the CallRuntime invocation not
  part of the AST).
- Adds a new Await AST node. No new members or anything, but it seemed
  palatable to avoid having `if (is_await())` in a number of
  VisitSuspend functions.

BUG=v8:5855, v8:5099, v8:4483
R=rmcilroy@chromium.org, kozyatinskiy@chromium.org, yangguo@chromium.org
TBR=bmeurer@chromium.org

Change-Id: I9cd3fda99cd40295c04fdf1aea01b5d83fac6caf
Reviewed-on: https://chromium-review.googlesource.com/558806
Commit-Queue: Georg Neis <neis@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Reviewed-by: Aleksey Kozyatinskiy <kozyatinskiy@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46666}
2017-07-14 08:57:51 +00:00

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#
# Autogenerated by generate-bytecode-expectations.
#
---
wrap: no
test function name: f
async iteration: yes
---
snippet: "
async function f() {
for await (let x of [1, 2, 3]) {}
}
f();
"
frame size: 25
parameter count: 1
bytecode array length: 646
bytecodes: [
B(Mov), R(new_target), R(11),
B(Ldar), R(new_target),
B(JumpIfUndefined), U8(25),
B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetContext), R(11), U8(1),
B(PushContext), R(13),
B(RestoreGeneratorState), R(11),
B(Star), R(12),
B(SwitchOnSmiNoFeedback), U8(0), U8(3), I8(0),
B(LdaSmi), I8(81),
B(Star), R(13),
B(CallRuntime), U16(Runtime::kAbort), R(13), U8(1),
B(LdaSmi), I8(-2),
B(Star), R(12),
B(Mov), R(closure), R(13),
B(Mov), R(this), R(14),
B(InvokeIntrinsic), U8(Runtime::k_CreateJSGeneratorObject), R(13), U8(2),
B(Star), R(2),
/* 16 E> */ B(StackCheck),
B(LdaUndefined),
B(Star), R(13),
B(CallJSRuntime), U8(%async_function_promise_create), R(13), U8(1),
B(Star), R(10),
B(Mov), R(2), R(11),
B(Mov), R(context), R(15),
B(Mov), R(context), R(16),
B(LdaZero),
B(Star), R(6),
B(Mov), R(context), R(19),
B(Mov), R(context), R(20),
/* 43 S> */ B(CreateArrayLiteral), U8(3), U8(4), U8(37),
B(Star), R(21),
B(LdaNamedProperty), R(21), U8(4), U8(9),
B(JumpIfUndefined), U8(17),
B(JumpIfNull), U8(15),
B(Star), R(22),
B(CallProperty0), R(22), R(21), U8(11),
B(JumpIfJSReceiver), U8(23),
B(CallRuntime), U16(Runtime::kThrowSymbolAsyncIteratorInvalid), R(0), U8(0),
B(LdaNamedProperty), R(21), U8(5), U8(5),
B(Star), R(22),
B(CallProperty0), R(22), R(21), U8(7),
B(Star), R(22),
B(InvokeIntrinsic), U8(Runtime::k_CreateAsyncFromSyncIterator), R(22), U8(1),
B(Star), R(4),
B(Ldar), R(12),
B(SwitchOnSmiNoFeedback), U8(6), U8(1), I8(0),
B(LdaSmi), I8(-2),
/* 43 E> */ B(TestEqualStrictNoFeedback), R(12),
B(JumpIfTrue), U8(11),
B(LdaSmi), I8(81),
B(Star), R(21),
B(CallRuntime), U16(Runtime::kAbort), R(21), U8(1),
/* 40 S> */ B(LdaNamedProperty), R(4), U8(7), U8(15),
B(Star), R(21),
B(CallProperty0), R(21), R(4), U8(13),
B(Star), R(21),
B(Mov), R(11), R(22),
B(Mov), R(21), R(23),
B(Mov), R(10), R(24),
B(CallJSRuntime), U8(%async_function_await_uncaught), R(22), U8(3),
B(Star), R(21),
B(LdaZero),
B(SuspendGenerator), R(11), R(0), U8(21), U8(2),
B(Ldar), R(21),
/* 57 S> */ B(Return),
B(RestoreGeneratorRegisters), R(11), R(0), U8(21),
B(LdaSmi), I8(-2),
B(Star), R(12),
B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(11), U8(1),
B(Star), R(22),
B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(11), U8(1),
B(Star), R(23),
B(LdaZero),
B(TestEqualStrictNoFeedback), R(23),
B(JumpIfTrue), U8(5),
B(Ldar), R(22),
/* 40 E> */ B(ReThrow),
B(Mov), R(22), R(5),
/* 40 E> */ B(InvokeIntrinsic), U8(Runtime::k_IsJSReceiver), R(5), U8(1),
B(ToBooleanLogicalNot),
B(JumpIfFalse), U8(7),
B(CallRuntime), U16(Runtime::kThrowIteratorResultNotAnObject), R(5), U8(1),
B(LdaNamedProperty), R(5), U8(8), U8(17),
B(JumpIfToBooleanTrue), U8(25),
B(LdaNamedProperty), R(5), U8(9), U8(19),
B(Star), R(7),
B(LdaSmi), I8(2),
B(Star), R(6),
B(Mov), R(7), R(3),
/* 23 E> */ B(StackCheck),
B(Mov), R(3), R(0),
B(LdaZero),
B(Star), R(6),
B(JumpLoop), U8(126), I8(0),
B(Jump), U8(40),
B(Star), R(21),
B(Ldar), R(closure),
B(CreateCatchContext), R(21), U8(10), U8(11),
B(Star), R(20),
B(LdaTheHole),
B(SetPendingMessage),
B(Ldar), R(20),
B(PushContext), R(21),
B(LdaSmi), I8(2),
B(TestEqualStrict), R(6), U8(21),
B(JumpIfFalse), U8(6),
B(LdaSmi), I8(1),
B(Star), R(6),
B(LdaImmutableCurrentContextSlot), U8(4),
B(Star), R(22),
B(CallRuntime), U16(Runtime::kReThrow), R(22), U8(1),
B(PopContext), R(21),
B(LdaSmi), I8(-1),
B(Star), R(17),
B(Jump), U8(7),
B(Star), R(18),
B(LdaZero),
B(Star), R(17),
B(LdaTheHole),
B(SetPendingMessage),
B(Star), R(19),
B(LdaZero),
B(TestEqualStrict), R(6), U8(22),
B(JumpIfTrue), U8(217),
B(LdaNamedProperty), R(4), U8(12), U8(23),
B(Star), R(8),
B(TestUndetectable),
B(JumpIfFalse), U8(4),
B(Jump), U8(206),
B(LdaSmi), I8(1),
B(TestEqualStrict), R(6), U8(26),
B(JumpIfFalse), U8(118),
B(Ldar), R(8),
B(TestTypeOf), U8(5),
B(JumpIfFalse), U8(4),
B(Jump), U8(18),
B(Wide), B(LdaSmi), I16(131),
B(Star), R(20),
B(LdaConstant), U8(13),
B(Star), R(21),
B(CallRuntime), U16(Runtime::kNewTypeError), R(20), U8(2),
B(Throw),
B(Mov), R(context), R(20),
B(Mov), R(8), R(21),
B(Mov), R(4), R(22),
B(InvokeIntrinsic), U8(Runtime::k_Call), R(21), U8(2),
B(Star), R(21),
B(Mov), R(11), R(22),
B(Mov), R(21), R(23),
B(Mov), R(10), R(24),
B(CallJSRuntime), U8(%async_function_await_caught), R(22), U8(3),
B(Star), R(21),
B(LdaSmi), I8(1),
B(SuspendGenerator), R(11), R(0), U8(21), U8(2),
B(Ldar), R(21),
/* 57 S> */ B(Return),
B(RestoreGeneratorRegisters), R(11), R(0), U8(21),
B(LdaSmi), I8(-2),
B(Star), R(12),
B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(11), U8(1),
B(Star), R(22),
B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(11), U8(1),
B(Star), R(23),
B(LdaZero),
B(TestEqualStrictNoFeedback), R(23),
B(JumpIfTrue), U8(5),
B(Ldar), R(22),
B(ReThrow),
B(Ldar), R(22),
B(Jump), U8(20),
B(Star), R(21),
B(Ldar), R(closure),
B(CreateCatchContext), R(21), U8(10), U8(14),
B(Star), R(20),
B(LdaTheHole),
B(SetPendingMessage),
B(Ldar), R(20),
B(PushContext), R(21),
B(PopContext), R(21),
B(Jump), U8(83),
B(Mov), R(8), R(20),
B(Mov), R(4), R(21),
B(InvokeIntrinsic), U8(Runtime::k_Call), R(20), U8(2),
B(Star), R(20),
B(Mov), R(11), R(21),
B(Mov), R(20), R(22),
B(Mov), R(10), R(23),
B(CallJSRuntime), U8(%async_function_await_uncaught), R(21), U8(3),
B(Star), R(20),
B(LdaSmi), I8(2),
B(SuspendGenerator), R(11), R(0), U8(20), U8(2),
B(Ldar), R(20),
/* 57 S> */ B(Return),
B(RestoreGeneratorRegisters), R(11), R(0), U8(20),
B(LdaSmi), I8(-2),
B(Star), R(12),
B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(11), U8(1),
B(Star), R(21),
B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(11), U8(1),
B(Star), R(22),
B(LdaZero),
B(TestEqualStrictNoFeedback), R(22),
B(JumpIfTrue), U8(5),
B(Ldar), R(21),
B(ReThrow),
B(Mov), R(21), R(9),
B(InvokeIntrinsic), U8(Runtime::k_IsJSReceiver), R(9), U8(1),
B(JumpIfToBooleanFalse), U8(4),
B(Jump), U8(7),
B(CallRuntime), U16(Runtime::kThrowIteratorResultNotAnObject), R(9), U8(1),
B(Ldar), R(19),
B(SetPendingMessage),
B(LdaZero),
B(TestEqualStrictNoFeedback), R(17),
B(JumpIfFalse), U8(5),
B(Ldar), R(18),
B(ReThrow),
B(LdaUndefined),
B(Star), R(17),
B(LdaUndefined),
B(Star), R(19),
B(Mov), R(10), R(18),
B(CallJSRuntime), U8(%promise_resolve), R(17), U8(3),
B(LdaZero),
B(Star), R(13),
B(Mov), R(10), R(14),
B(Jump), U8(59),
B(Jump), U8(45),
B(Star), R(17),
B(Ldar), R(closure),
B(CreateCatchContext), R(17), U8(10), U8(15),
B(Star), R(16),
B(LdaTheHole),
B(SetPendingMessage),
B(Ldar), R(16),
B(PushContext), R(17),
B(LdaUndefined),
B(Star), R(18),
B(LdaImmutableCurrentContextSlot), U8(4),
B(Star), R(20),
B(LdaFalse),
B(Star), R(21),
B(Mov), R(10), R(19),
B(CallJSRuntime), U8(%promise_internal_reject), R(18), U8(4),
B(PopContext), R(17),
B(LdaZero),
B(Star), R(13),
B(Mov), R(10), R(14),
B(Jump), U8(14),
B(LdaSmi), I8(-1),
B(Star), R(13),
B(Jump), U8(8),
B(Star), R(14),
B(LdaSmi), I8(1),
B(Star), R(13),
B(LdaTheHole),
B(SetPendingMessage),
B(Star), R(15),
B(LdaUndefined),
B(Star), R(16),
B(Mov), R(10), R(17),
B(CallJSRuntime), U8(%async_function_promise_release), R(16), U8(2),
B(Ldar), R(15),
B(SetPendingMessage),
B(Ldar), R(13),
B(SwitchOnSmiNoFeedback), U8(16), U8(2), I8(0),
B(Jump), U8(8),
B(Ldar), R(14),
/* 57 S> */ B(Return),
B(Ldar), R(14),
B(ReThrow),
B(LdaUndefined),
/* 57 S> */ B(Return),
]
constant pool: [
Smi [102],
Smi [374],
Smi [463],
TUPLE2_TYPE,
SYMBOL_TYPE,
SYMBOL_TYPE,
Smi [55],
ONE_BYTE_INTERNALIZED_STRING_TYPE ["next"],
ONE_BYTE_INTERNALIZED_STRING_TYPE ["done"],
ONE_BYTE_INTERNALIZED_STRING_TYPE ["value"],
ONE_BYTE_INTERNALIZED_STRING_TYPE [".catch"],
FIXED_ARRAY_TYPE,
ONE_BYTE_INTERNALIZED_STRING_TYPE ["return"],
ONE_BYTE_INTERNALIZED_STRING_TYPE [""],
FIXED_ARRAY_TYPE,
FIXED_ARRAY_TYPE,
Smi [6],
Smi [9],
]
handlers: [
[62, 601, 607],
[65, 556, 558],
[71, 288, 294],
[74, 248, 250],
[354, 421, 423],
]
---
snippet: "
async function f() {
for await (let x of [1, 2, 3]) { return x; }
}
f();
"
frame size: 25
parameter count: 1
bytecode array length: 678
bytecodes: [
B(Mov), R(new_target), R(11),
B(Ldar), R(new_target),
B(JumpIfUndefined), U8(25),
B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetContext), R(11), U8(1),
B(PushContext), R(13),
B(RestoreGeneratorState), R(11),
B(Star), R(12),
B(SwitchOnSmiNoFeedback), U8(0), U8(3), I8(0),
B(LdaSmi), I8(81),
B(Star), R(13),
B(CallRuntime), U16(Runtime::kAbort), R(13), U8(1),
B(LdaSmi), I8(-2),
B(Star), R(12),
B(Mov), R(closure), R(13),
B(Mov), R(this), R(14),
B(InvokeIntrinsic), U8(Runtime::k_CreateJSGeneratorObject), R(13), U8(2),
B(Star), R(2),
/* 16 E> */ B(StackCheck),
B(LdaUndefined),
B(Star), R(13),
B(CallJSRuntime), U8(%async_function_promise_create), R(13), U8(1),
B(Star), R(10),
B(Mov), R(2), R(11),
B(Mov), R(context), R(15),
B(Mov), R(context), R(16),
B(LdaZero),
B(Star), R(6),
B(Mov), R(context), R(19),
B(Mov), R(context), R(20),
/* 43 S> */ B(CreateArrayLiteral), U8(3), U8(4), U8(37),
B(Star), R(21),
B(LdaNamedProperty), R(21), U8(4), U8(9),
B(JumpIfUndefined), U8(17),
B(JumpIfNull), U8(15),
B(Star), R(22),
B(CallProperty0), R(22), R(21), U8(11),
B(JumpIfJSReceiver), U8(23),
B(CallRuntime), U16(Runtime::kThrowSymbolAsyncIteratorInvalid), R(0), U8(0),
B(LdaNamedProperty), R(21), U8(5), U8(5),
B(Star), R(22),
B(CallProperty0), R(22), R(21), U8(7),
B(Star), R(22),
B(InvokeIntrinsic), U8(Runtime::k_CreateAsyncFromSyncIterator), R(22), U8(1),
B(Star), R(4),
B(Ldar), R(12),
B(SwitchOnSmiNoFeedback), U8(6), U8(1), I8(0),
B(LdaSmi), I8(-2),
/* 43 E> */ B(TestEqualStrictNoFeedback), R(12),
B(JumpIfTrue), U8(11),
B(LdaSmi), I8(81),
B(Star), R(21),
B(CallRuntime), U16(Runtime::kAbort), R(21), U8(1),
/* 40 S> */ B(LdaNamedProperty), R(4), U8(7), U8(15),
B(Star), R(21),
B(CallProperty0), R(21), R(4), U8(13),
B(Star), R(21),
B(Mov), R(11), R(22),
B(Mov), R(21), R(23),
B(Mov), R(10), R(24),
B(CallJSRuntime), U8(%async_function_await_uncaught), R(22), U8(3),
B(Star), R(21),
B(LdaZero),
B(SuspendGenerator), R(11), R(0), U8(21), U8(2),
B(Ldar), R(21),
/* 68 S> */ B(Return),
B(RestoreGeneratorRegisters), R(11), R(0), U8(21),
B(LdaSmi), I8(-2),
B(Star), R(12),
B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(11), U8(1),
B(Star), R(22),
B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(11), U8(1),
B(Star), R(23),
B(LdaZero),
B(TestEqualStrictNoFeedback), R(23),
B(JumpIfTrue), U8(5),
B(Ldar), R(22),
/* 40 E> */ B(ReThrow),
B(Mov), R(22), R(5),
/* 40 E> */ B(InvokeIntrinsic), U8(Runtime::k_IsJSReceiver), R(5), U8(1),
B(ToBooleanLogicalNot),
B(JumpIfFalse), U8(7),
B(CallRuntime), U16(Runtime::kThrowIteratorResultNotAnObject), R(5), U8(1),
B(LdaNamedProperty), R(5), U8(8), U8(17),
B(JumpIfToBooleanTrue), U8(27),
B(LdaNamedProperty), R(5), U8(9), U8(19),
B(Star), R(7),
B(LdaSmi), I8(2),
B(Star), R(6),
B(Mov), R(7), R(3),
/* 23 E> */ B(StackCheck),
B(Mov), R(3), R(0),
/* 56 S> */ B(LdaZero),
B(Star), R(17),
B(Mov), R(7), R(18),
B(Jump), U8(54),
B(Jump), U8(40),
B(Star), R(21),
B(Ldar), R(closure),
B(CreateCatchContext), R(21), U8(10), U8(11),
B(Star), R(20),
B(LdaTheHole),
B(SetPendingMessage),
B(Ldar), R(20),
B(PushContext), R(21),
B(LdaSmi), I8(2),
B(TestEqualStrict), R(6), U8(21),
B(JumpIfFalse), U8(6),
B(LdaSmi), I8(1),
B(Star), R(6),
B(LdaImmutableCurrentContextSlot), U8(4),
B(Star), R(22),
B(CallRuntime), U16(Runtime::kReThrow), R(22), U8(1),
B(PopContext), R(21),
B(LdaSmi), I8(-1),
B(Star), R(17),
B(Jump), U8(8),
B(Star), R(18),
B(LdaSmi), I8(1),
B(Star), R(17),
B(LdaTheHole),
B(SetPendingMessage),
B(Star), R(19),
B(LdaZero),
B(TestEqualStrict), R(6), U8(22),
B(JumpIfTrue), U8(217),
B(LdaNamedProperty), R(4), U8(12), U8(23),
B(Star), R(8),
B(TestUndetectable),
B(JumpIfFalse), U8(4),
B(Jump), U8(206),
B(LdaSmi), I8(1),
B(TestEqualStrict), R(6), U8(26),
B(JumpIfFalse), U8(118),
B(Ldar), R(8),
B(TestTypeOf), U8(5),
B(JumpIfFalse), U8(4),
B(Jump), U8(18),
B(Wide), B(LdaSmi), I16(131),
B(Star), R(20),
B(LdaConstant), U8(13),
B(Star), R(21),
B(CallRuntime), U16(Runtime::kNewTypeError), R(20), U8(2),
B(Throw),
B(Mov), R(context), R(20),
B(Mov), R(8), R(21),
B(Mov), R(4), R(22),
B(InvokeIntrinsic), U8(Runtime::k_Call), R(21), U8(2),
B(Star), R(21),
B(Mov), R(11), R(22),
B(Mov), R(21), R(23),
B(Mov), R(10), R(24),
B(CallJSRuntime), U8(%async_function_await_caught), R(22), U8(3),
B(Star), R(21),
B(LdaSmi), I8(1),
B(SuspendGenerator), R(11), R(0), U8(21), U8(2),
B(Ldar), R(21),
/* 68 S> */ B(Return),
B(RestoreGeneratorRegisters), R(11), R(0), U8(21),
B(LdaSmi), I8(-2),
B(Star), R(12),
B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(11), U8(1),
B(Star), R(22),
B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(11), U8(1),
B(Star), R(23),
B(LdaZero),
B(TestEqualStrictNoFeedback), R(23),
B(JumpIfTrue), U8(5),
B(Ldar), R(22),
B(ReThrow),
B(Ldar), R(22),
B(Jump), U8(20),
B(Star), R(21),
B(Ldar), R(closure),
B(CreateCatchContext), R(21), U8(10), U8(14),
B(Star), R(20),
B(LdaTheHole),
B(SetPendingMessage),
B(Ldar), R(20),
B(PushContext), R(21),
B(PopContext), R(21),
B(Jump), U8(83),
B(Mov), R(8), R(20),
B(Mov), R(4), R(21),
B(InvokeIntrinsic), U8(Runtime::k_Call), R(20), U8(2),
B(Star), R(20),
B(Mov), R(11), R(21),
B(Mov), R(20), R(22),
B(Mov), R(10), R(23),
B(CallJSRuntime), U8(%async_function_await_uncaught), R(21), U8(3),
B(Star), R(20),
B(LdaSmi), I8(2),
B(SuspendGenerator), R(11), R(0), U8(20), U8(2),
B(Ldar), R(20),
/* 68 S> */ B(Return),
B(RestoreGeneratorRegisters), R(11), R(0), U8(20),
B(LdaSmi), I8(-2),
B(Star), R(12),
B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(11), U8(1),
B(Star), R(21),
B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(11), U8(1),
B(Star), R(22),
B(LdaZero),
B(TestEqualStrictNoFeedback), R(22),
B(JumpIfTrue), U8(5),
B(Ldar), R(21),
B(ReThrow),
B(Mov), R(21), R(9),
B(InvokeIntrinsic), U8(Runtime::k_IsJSReceiver), R(9), U8(1),
B(JumpIfToBooleanFalse), U8(4),
B(Jump), U8(7),
B(CallRuntime), U16(Runtime::kThrowIteratorResultNotAnObject), R(9), U8(1),
B(Ldar), R(19),
B(SetPendingMessage),
B(Ldar), R(17),
B(SwitchOnSmiNoFeedback), U8(15), U8(2), I8(0),
B(Jump), U8(13),
B(LdaZero),
B(Star), R(13),
B(Mov), R(18), R(14),
B(Jump), U8(85),
B(Ldar), R(18),
B(ReThrow),
B(LdaUndefined),
B(Star), R(17),
B(LdaUndefined),
B(Star), R(19),
B(Mov), R(10), R(18),
B(CallJSRuntime), U8(%promise_resolve), R(17), U8(3),
B(LdaSmi), I8(1),
B(Star), R(13),
B(Mov), R(10), R(14),
B(Jump), U8(60),
B(Jump), U8(46),
B(Star), R(17),
B(Ldar), R(closure),
B(CreateCatchContext), R(17), U8(10), U8(17),
B(Star), R(16),
B(LdaTheHole),
B(SetPendingMessage),
B(Ldar), R(16),
B(PushContext), R(17),
B(LdaUndefined),
B(Star), R(18),
B(LdaImmutableCurrentContextSlot), U8(4),
B(Star), R(20),
B(LdaFalse),
B(Star), R(21),
B(Mov), R(10), R(19),
B(CallJSRuntime), U8(%promise_internal_reject), R(18), U8(4),
B(PopContext), R(17),
B(LdaSmi), I8(1),
B(Star), R(13),
B(Mov), R(10), R(14),
B(Jump), U8(14),
B(LdaSmi), I8(-1),
B(Star), R(13),
B(Jump), U8(8),
B(Star), R(14),
B(LdaSmi), I8(2),
B(Star), R(13),
B(LdaTheHole),
B(SetPendingMessage),
B(Star), R(15),
B(LdaUndefined),
B(Star), R(16),
B(Mov), R(10), R(17),
B(CallJSRuntime), U8(%async_function_promise_release), R(16), U8(2),
B(Ldar), R(15),
B(SetPendingMessage),
B(Ldar), R(13),
B(SwitchOnSmiNoFeedback), U8(18), U8(3), I8(0),
B(Jump), U8(24),
B(LdaUndefined),
B(Star), R(16),
B(Mov), R(10), R(17),
B(Mov), R(14), R(18),
B(CallJSRuntime), U8(%promise_resolve), R(16), U8(3),
B(Ldar), R(10),
/* 68 S> */ B(Return),
B(Ldar), R(14),
/* 68 S> */ B(Return),
B(Ldar), R(14),
B(ReThrow),
B(LdaUndefined),
/* 68 S> */ B(Return),
]
constant pool: [
Smi [102],
Smi [377],
Smi [466],
TUPLE2_TYPE,
SYMBOL_TYPE,
SYMBOL_TYPE,
Smi [55],
ONE_BYTE_INTERNALIZED_STRING_TYPE ["next"],
ONE_BYTE_INTERNALIZED_STRING_TYPE ["done"],
ONE_BYTE_INTERNALIZED_STRING_TYPE ["value"],
ONE_BYTE_INTERNALIZED_STRING_TYPE [".catch"],
FIXED_ARRAY_TYPE,
ONE_BYTE_INTERNALIZED_STRING_TYPE ["return"],
ONE_BYTE_INTERNALIZED_STRING_TYPE [""],
FIXED_ARRAY_TYPE,
Smi [6],
Smi [14],
FIXED_ARRAY_TYPE,
Smi [6],
Smi [22],
Smi [25],
]
handlers: [
[62, 617, 623],
[65, 571, 573],
[71, 290, 296],
[74, 250, 252],
[357, 424, 426],
]
---
snippet: "
async function f() {
for await (let x of [10, 20, 30]) {
if (x == 10) continue;
if (x == 20) break;
}
}
f();
"
frame size: 25
parameter count: 1
bytecode array length: 664
bytecodes: [
B(Mov), R(new_target), R(11),
B(Ldar), R(new_target),
B(JumpIfUndefined), U8(25),
B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetContext), R(11), U8(1),
B(PushContext), R(13),
B(RestoreGeneratorState), R(11),
B(Star), R(12),
B(SwitchOnSmiNoFeedback), U8(0), U8(3), I8(0),
B(LdaSmi), I8(81),
B(Star), R(13),
B(CallRuntime), U16(Runtime::kAbort), R(13), U8(1),
B(LdaSmi), I8(-2),
B(Star), R(12),
B(Mov), R(closure), R(13),
B(Mov), R(this), R(14),
B(InvokeIntrinsic), U8(Runtime::k_CreateJSGeneratorObject), R(13), U8(2),
B(Star), R(2),
/* 16 E> */ B(StackCheck),
B(LdaUndefined),
B(Star), R(13),
B(CallJSRuntime), U8(%async_function_promise_create), R(13), U8(1),
B(Star), R(10),
B(Mov), R(2), R(11),
B(Mov), R(context), R(15),
B(Mov), R(context), R(16),
B(LdaZero),
B(Star), R(6),
B(Mov), R(context), R(19),
B(Mov), R(context), R(20),
/* 43 S> */ B(CreateArrayLiteral), U8(3), U8(4), U8(37),
B(Star), R(21),
B(LdaNamedProperty), R(21), U8(4), U8(9),
B(JumpIfUndefined), U8(17),
B(JumpIfNull), U8(15),
B(Star), R(22),
B(CallProperty0), R(22), R(21), U8(11),
B(JumpIfJSReceiver), U8(23),
B(CallRuntime), U16(Runtime::kThrowSymbolAsyncIteratorInvalid), R(0), U8(0),
B(LdaNamedProperty), R(21), U8(5), U8(5),
B(Star), R(22),
B(CallProperty0), R(22), R(21), U8(7),
B(Star), R(22),
B(InvokeIntrinsic), U8(Runtime::k_CreateAsyncFromSyncIterator), R(22), U8(1),
B(Star), R(4),
B(Ldar), R(12),
B(SwitchOnSmiNoFeedback), U8(6), U8(1), I8(0),
B(LdaSmi), I8(-2),
/* 43 E> */ B(TestEqualStrictNoFeedback), R(12),
B(JumpIfTrue), U8(11),
B(LdaSmi), I8(81),
B(Star), R(21),
B(CallRuntime), U16(Runtime::kAbort), R(21), U8(1),
/* 40 S> */ B(LdaNamedProperty), R(4), U8(7), U8(15),
B(Star), R(21),
B(CallProperty0), R(21), R(4), U8(13),
B(Star), R(21),
B(Mov), R(11), R(22),
B(Mov), R(21), R(23),
B(Mov), R(10), R(24),
B(CallJSRuntime), U8(%async_function_await_uncaught), R(22), U8(3),
B(Star), R(21),
B(LdaZero),
B(SuspendGenerator), R(11), R(0), U8(21), U8(2),
B(Ldar), R(21),
/* 114 S> */ B(Return),
B(RestoreGeneratorRegisters), R(11), R(0), U8(21),
B(LdaSmi), I8(-2),
B(Star), R(12),
B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(11), U8(1),
B(Star), R(22),
B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(11), U8(1),
B(Star), R(23),
B(LdaZero),
B(TestEqualStrictNoFeedback), R(23),
B(JumpIfTrue), U8(5),
B(Ldar), R(22),
/* 40 E> */ B(ReThrow),
B(Mov), R(22), R(5),
/* 40 E> */ B(InvokeIntrinsic), U8(Runtime::k_IsJSReceiver), R(5), U8(1),
B(ToBooleanLogicalNot),
B(JumpIfFalse), U8(7),
B(CallRuntime), U16(Runtime::kThrowIteratorResultNotAnObject), R(5), U8(1),
B(LdaNamedProperty), R(5), U8(8), U8(17),
B(JumpIfToBooleanTrue), U8(43),
B(LdaNamedProperty), R(5), U8(9), U8(19),
B(Star), R(7),
B(LdaSmi), I8(2),
B(Star), R(6),
B(Mov), R(7), R(3),
/* 23 E> */ B(StackCheck),
B(Mov), R(3), R(0),
/* 63 S> */ B(LdaSmi), I8(10),
/* 69 E> */ B(TestEqual), R(0), U8(21),
B(JumpIfFalse), U8(4),
/* 76 S> */ B(Jump), U8(14),
/* 90 S> */ B(LdaSmi), I8(20),
/* 96 E> */ B(TestEqual), R(0), U8(22),
B(JumpIfFalse), U8(4),
/* 103 S> */ B(Jump), U8(8),
B(LdaZero),
B(Star), R(6),
B(JumpLoop), U8(144), I8(0),
B(Jump), U8(40),
B(Star), R(21),
B(Ldar), R(closure),
B(CreateCatchContext), R(21), U8(10), U8(11),
B(Star), R(20),
B(LdaTheHole),
B(SetPendingMessage),
B(Ldar), R(20),
B(PushContext), R(21),
B(LdaSmi), I8(2),
B(TestEqualStrict), R(6), U8(23),
B(JumpIfFalse), U8(6),
B(LdaSmi), I8(1),
B(Star), R(6),
B(LdaImmutableCurrentContextSlot), U8(4),
B(Star), R(22),
B(CallRuntime), U16(Runtime::kReThrow), R(22), U8(1),
B(PopContext), R(21),
B(LdaSmi), I8(-1),
B(Star), R(17),
B(Jump), U8(7),
B(Star), R(18),
B(LdaZero),
B(Star), R(17),
B(LdaTheHole),
B(SetPendingMessage),
B(Star), R(19),
B(LdaZero),
B(TestEqualStrict), R(6), U8(24),
B(JumpIfTrue), U8(217),
B(LdaNamedProperty), R(4), U8(12), U8(25),
B(Star), R(8),
B(TestUndetectable),
B(JumpIfFalse), U8(4),
B(Jump), U8(206),
B(LdaSmi), I8(1),
B(TestEqualStrict), R(6), U8(28),
B(JumpIfFalse), U8(118),
B(Ldar), R(8),
B(TestTypeOf), U8(5),
B(JumpIfFalse), U8(4),
B(Jump), U8(18),
B(Wide), B(LdaSmi), I16(131),
B(Star), R(20),
B(LdaConstant), U8(13),
B(Star), R(21),
B(CallRuntime), U16(Runtime::kNewTypeError), R(20), U8(2),
B(Throw),
B(Mov), R(context), R(20),
B(Mov), R(8), R(21),
B(Mov), R(4), R(22),
B(InvokeIntrinsic), U8(Runtime::k_Call), R(21), U8(2),
B(Star), R(21),
B(Mov), R(11), R(22),
B(Mov), R(21), R(23),
B(Mov), R(10), R(24),
B(CallJSRuntime), U8(%async_function_await_caught), R(22), U8(3),
B(Star), R(21),
B(LdaSmi), I8(1),
B(SuspendGenerator), R(11), R(0), U8(21), U8(2),
B(Ldar), R(21),
/* 114 S> */ B(Return),
B(RestoreGeneratorRegisters), R(11), R(0), U8(21),
B(LdaSmi), I8(-2),
B(Star), R(12),
B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(11), U8(1),
B(Star), R(22),
B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(11), U8(1),
B(Star), R(23),
B(LdaZero),
B(TestEqualStrictNoFeedback), R(23),
B(JumpIfTrue), U8(5),
B(Ldar), R(22),
B(ReThrow),
B(Ldar), R(22),
B(Jump), U8(20),
B(Star), R(21),
B(Ldar), R(closure),
B(CreateCatchContext), R(21), U8(10), U8(14),
B(Star), R(20),
B(LdaTheHole),
B(SetPendingMessage),
B(Ldar), R(20),
B(PushContext), R(21),
B(PopContext), R(21),
B(Jump), U8(83),
B(Mov), R(8), R(20),
B(Mov), R(4), R(21),
B(InvokeIntrinsic), U8(Runtime::k_Call), R(20), U8(2),
B(Star), R(20),
B(Mov), R(11), R(21),
B(Mov), R(20), R(22),
B(Mov), R(10), R(23),
B(CallJSRuntime), U8(%async_function_await_uncaught), R(21), U8(3),
B(Star), R(20),
B(LdaSmi), I8(2),
B(SuspendGenerator), R(11), R(0), U8(20), U8(2),
B(Ldar), R(20),
/* 114 S> */ B(Return),
B(RestoreGeneratorRegisters), R(11), R(0), U8(20),
B(LdaSmi), I8(-2),
B(Star), R(12),
B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetInputOrDebugPos), R(11), U8(1),
B(Star), R(21),
B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(11), U8(1),
B(Star), R(22),
B(LdaZero),
B(TestEqualStrictNoFeedback), R(22),
B(JumpIfTrue), U8(5),
B(Ldar), R(21),
B(ReThrow),
B(Mov), R(21), R(9),
B(InvokeIntrinsic), U8(Runtime::k_IsJSReceiver), R(9), U8(1),
B(JumpIfToBooleanFalse), U8(4),
B(Jump), U8(7),
B(CallRuntime), U16(Runtime::kThrowIteratorResultNotAnObject), R(9), U8(1),
B(Ldar), R(19),
B(SetPendingMessage),
B(LdaZero),
B(TestEqualStrictNoFeedback), R(17),
B(JumpIfFalse), U8(5),
B(Ldar), R(18),
B(ReThrow),
B(LdaUndefined),
B(Star), R(17),
B(LdaUndefined),
B(Star), R(19),
B(Mov), R(10), R(18),
B(CallJSRuntime), U8(%promise_resolve), R(17), U8(3),
B(LdaZero),
B(Star), R(13),
B(Mov), R(10), R(14),
B(Jump), U8(59),
B(Jump), U8(45),
B(Star), R(17),
B(Ldar), R(closure),
B(CreateCatchContext), R(17), U8(10), U8(15),
B(Star), R(16),
B(LdaTheHole),
B(SetPendingMessage),
B(Ldar), R(16),
B(PushContext), R(17),
B(LdaUndefined),
B(Star), R(18),
B(LdaImmutableCurrentContextSlot), U8(4),
B(Star), R(20),
B(LdaFalse),
B(Star), R(21),
B(Mov), R(10), R(19),
B(CallJSRuntime), U8(%promise_internal_reject), R(18), U8(4),
B(PopContext), R(17),
B(LdaZero),
B(Star), R(13),
B(Mov), R(10), R(14),
B(Jump), U8(14),
B(LdaSmi), I8(-1),
B(Star), R(13),
B(Jump), U8(8),
B(Star), R(14),
B(LdaSmi), I8(1),
B(Star), R(13),
B(LdaTheHole),
B(SetPendingMessage),
B(Star), R(15),
B(LdaUndefined),
B(Star), R(16),
B(Mov), R(10), R(17),
B(CallJSRuntime), U8(%async_function_promise_release), R(16), U8(2),
B(Ldar), R(15),
B(SetPendingMessage),
B(Ldar), R(13),
B(SwitchOnSmiNoFeedback), U8(16), U8(2), I8(0),
B(Jump), U8(8),
B(Ldar), R(14),
/* 114 S> */ B(Return),
B(Ldar), R(14),
B(ReThrow),
B(LdaUndefined),
/* 114 S> */ B(Return),
]
constant pool: [
Smi [102],
Smi [392],
Smi [481],
TUPLE2_TYPE,
SYMBOL_TYPE,
SYMBOL_TYPE,
Smi [55],
ONE_BYTE_INTERNALIZED_STRING_TYPE ["next"],
ONE_BYTE_INTERNALIZED_STRING_TYPE ["done"],
ONE_BYTE_INTERNALIZED_STRING_TYPE ["value"],
ONE_BYTE_INTERNALIZED_STRING_TYPE [".catch"],
FIXED_ARRAY_TYPE,
ONE_BYTE_INTERNALIZED_STRING_TYPE ["return"],
ONE_BYTE_INTERNALIZED_STRING_TYPE [""],
FIXED_ARRAY_TYPE,
FIXED_ARRAY_TYPE,
Smi [6],
Smi [9],
]
handlers: [
[62, 619, 625],
[65, 574, 576],
[71, 306, 312],
[74, 266, 268],
[372, 439, 441],
]
---
snippet: "
async function f() {
var x = { 'a': 1, 'b': 2 };
for (x['a'] of [1,2,3]) { return x['a']; }
}
f();
"
frame size: 19
parameter count: 1
bytecode array length: 432
bytecodes: [
/* 16 E> */ B(StackCheck),
B(LdaUndefined),
B(Star), R(9),
B(CallJSRuntime), U8(%async_function_promise_create), R(9), U8(1),
B(Star), R(8),
B(Mov), R(context), R(11),
B(Mov), R(context), R(12),
/* 31 S> */ B(CreateObjectLiteral), U8(0), U8(4), U8(41), R(13),
B(Mov), R(13), R(1),
B(LdaZero),
B(Star), R(4),
B(Mov), R(context), R(15),
B(Mov), R(context), R(16),
/* 68 S> */ B(CreateArrayLiteral), U8(1), U8(5), U8(37),
B(Star), R(17),
B(LdaNamedProperty), R(17), U8(2), U8(6),
B(Star), R(18),
B(CallProperty0), R(18), R(17), U8(8),
B(JumpIfJSReceiver), U8(7),
B(CallRuntime), U16(Runtime::kThrowSymbolIteratorInvalid), R(0), U8(0),
B(Star), R(2),
/* 59 S> */ B(LdaNamedProperty), R(2), U8(3), U8(12),
B(Star), R(17),
B(CallProperty0), R(17), R(2), U8(10),
B(Star), R(3),
/* 59 E> */ B(InvokeIntrinsic), U8(Runtime::k_IsJSReceiver), R(3), U8(1),
B(ToBooleanLogicalNot),
B(JumpIfFalse), U8(7),
B(CallRuntime), U16(Runtime::kThrowIteratorResultNotAnObject), R(3), U8(1),
B(LdaNamedProperty), R(3), U8(4), U8(14),
B(JumpIfToBooleanTrue), U8(31),
/* 58 E> */ B(LdaNamedProperty), R(3), U8(5), U8(16),
B(Star), R(5),
B(LdaSmi), I8(2),
B(Star), R(4),
B(Ldar), R(5),
B(StaNamedPropertySloppy), R(1), U8(6), U8(18),
/* 53 E> */ B(StackCheck),
/* 79 S> */ B(Nop),
/* 87 E> */ B(LdaNamedProperty), R(1), U8(6), U8(20),
B(Star), R(14),
B(LdaZero),
B(Star), R(13),
B(Jump), U8(54),
B(Jump), U8(40),
B(Star), R(17),
B(Ldar), R(closure),
B(CreateCatchContext), R(17), U8(7), U8(8),
B(Star), R(16),
B(LdaTheHole),
B(SetPendingMessage),
B(Ldar), R(16),
B(PushContext), R(17),
B(LdaSmi), I8(2),
B(TestEqualStrict), R(4), U8(22),
B(JumpIfFalse), U8(6),
B(LdaSmi), I8(1),
B(Star), R(4),
B(LdaImmutableCurrentContextSlot), U8(4),
B(Star), R(18),
B(CallRuntime), U16(Runtime::kReThrow), R(18), U8(1),
B(PopContext), R(17),
B(LdaSmi), I8(-1),
B(Star), R(13),
B(Jump), U8(8),
B(Star), R(14),
B(LdaSmi), I8(1),
B(Star), R(13),
B(LdaTheHole),
B(SetPendingMessage),
B(Star), R(15),
B(LdaZero),
B(TestEqualStrict), R(4), U8(23),
B(JumpIfTrue), U8(104),
B(LdaNamedProperty), R(2), U8(9), U8(24),
B(Star), R(6),
B(TestUndetectable),
B(JumpIfFalse), U8(4),
B(Jump), U8(93),
B(LdaSmi), I8(1),
B(TestEqualStrict), R(4), U8(27),
B(JumpIfFalse), U8(61),
B(Ldar), R(6),
B(TestTypeOf), U8(5),
B(JumpIfFalse), U8(4),
B(Jump), U8(18),
B(Wide), B(LdaSmi), I16(131),
B(Star), R(16),
B(LdaConstant), U8(10),
B(Star), R(17),
B(CallRuntime), U16(Runtime::kNewTypeError), R(16), U8(2),
B(Throw),
B(Mov), R(context), R(16),
B(Mov), R(6), R(17),
B(Mov), R(2), R(18),
B(InvokeIntrinsic), U8(Runtime::k_Call), R(17), U8(2),
B(Jump), U8(20),
B(Star), R(17),
B(Ldar), R(closure),
B(CreateCatchContext), R(17), U8(7), U8(11),
B(Star), R(16),
B(LdaTheHole),
B(SetPendingMessage),
B(Ldar), R(16),
B(PushContext), R(17),
B(PopContext), R(17),
B(Jump), U8(27),
B(Mov), R(6), R(16),
B(Mov), R(2), R(17),
B(InvokeIntrinsic), U8(Runtime::k_Call), R(16), U8(2),
B(Star), R(7),
B(InvokeIntrinsic), U8(Runtime::k_IsJSReceiver), R(7), U8(1),
B(JumpIfToBooleanFalse), U8(4),
B(Jump), U8(7),
B(CallRuntime), U16(Runtime::kThrowIteratorResultNotAnObject), R(7), U8(1),
B(Ldar), R(15),
B(SetPendingMessage),
B(Ldar), R(13),
B(SwitchOnSmiNoFeedback), U8(12), U8(2), I8(0),
B(Jump), U8(13),
B(LdaZero),
B(Star), R(9),
B(Mov), R(14), R(10),
B(Jump), U8(85),
B(Ldar), R(14),
B(ReThrow),
B(LdaUndefined),
B(Star), R(13),
B(LdaUndefined),
B(Star), R(15),
B(Mov), R(8), R(14),
B(CallJSRuntime), U8(%promise_resolve), R(13), U8(3),
B(LdaSmi), I8(1),
B(Star), R(9),
B(Mov), R(8), R(10),
B(Jump), U8(60),
B(Jump), U8(46),
B(Star), R(13),
B(Ldar), R(closure),
B(CreateCatchContext), R(13), U8(7), U8(14),
B(Star), R(12),
B(LdaTheHole),
B(SetPendingMessage),
B(Ldar), R(12),
B(PushContext), R(13),
B(LdaUndefined),
B(Star), R(14),
B(LdaImmutableCurrentContextSlot), U8(4),
B(Star), R(16),
B(LdaFalse),
B(Star), R(17),
B(Mov), R(8), R(15),
B(CallJSRuntime), U8(%promise_internal_reject), R(14), U8(4),
B(PopContext), R(13),
B(LdaSmi), I8(1),
B(Star), R(9),
B(Mov), R(8), R(10),
B(Jump), U8(14),
B(LdaSmi), I8(-1),
B(Star), R(9),
B(Jump), U8(8),
B(Star), R(10),
B(LdaSmi), I8(2),
B(Star), R(9),
B(LdaTheHole),
B(SetPendingMessage),
B(Star), R(11),
B(LdaUndefined),
B(Star), R(12),
B(Mov), R(8), R(13),
B(CallJSRuntime), U8(%async_function_promise_release), R(12), U8(2),
B(Ldar), R(11),
B(SetPendingMessage),
B(Ldar), R(9),
B(SwitchOnSmiNoFeedback), U8(15), U8(3), I8(0),
B(Jump), U8(24),
B(LdaUndefined),
B(Star), R(12),
B(Mov), R(8), R(13),
B(Mov), R(10), R(14),
B(CallJSRuntime), U8(%promise_resolve), R(12), U8(3),
B(Ldar), R(8),
/* 96 S> */ B(Return),
B(Ldar), R(10),
/* 96 S> */ B(Return),
B(Ldar), R(10),
B(ReThrow),
B(LdaUndefined),
/* 96 S> */ B(Return),
]
constant pool: [
FIXED_ARRAY_TYPE,
TUPLE2_TYPE,
SYMBOL_TYPE,
ONE_BYTE_INTERNALIZED_STRING_TYPE ["next"],
ONE_BYTE_INTERNALIZED_STRING_TYPE ["done"],
ONE_BYTE_INTERNALIZED_STRING_TYPE ["value"],
ONE_BYTE_INTERNALIZED_STRING_TYPE ["a"],
ONE_BYTE_INTERNALIZED_STRING_TYPE [".catch"],
FIXED_ARRAY_TYPE,
ONE_BYTE_INTERNALIZED_STRING_TYPE ["return"],
ONE_BYTE_INTERNALIZED_STRING_TYPE [""],
FIXED_ARRAY_TYPE,
Smi [6],
Smi [14],
FIXED_ARRAY_TYPE,
Smi [6],
Smi [22],
Smi [25],
]
handlers: [
[13, 371, 377],
[16, 325, 327],
[30, 157, 163],
[33, 117, 119],
[224, 234, 236],
]
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