f537d77845
This introduces a new flag --async-stack-traces, which enables zero-cost
async stack traces. This enriches the non-standard Error.stack property
with async stack frames computed from walking up the promise chains and
collecting all the await suspension points along the way. In Error.stack
these async frames are marked with "async" to make it possible to
distinguish them from regular frames, for example:
```
Error: Some error message
at bar (<anonymous>)
at async foo (<anonymous>)
```
It's zero-cost because no additional information is collected during the
execution of the program, but only the information already present in the
promise chains is used to reconstruct an approximation of the async stack
in case of an exception. But this approximation is limited to suspension
points at await's in async functions. This depends on a recent ECMAScript
specification change, flagged behind --harmony-await-optimization and
implied the --async-stack-traces flag. Without this change there's no
way to get from the outer promise of an async function to the rest of
the promise chain, since the link is broken by the indirection introduced
by await.
For async functions the special outer promise, named .promise in the
Parser desugaring, is now forcible allocated to stack slot 0 during
scope resolution, to make it accessible to the stack frame construction
logic. Note that this first prototype doesn't yet work fully support
async generators and might have other limitations.
Bug: v8:7522
Ref: nodejs/node#11865
Change-Id: I0cc8e3cdfe45dab56d3d506be2d25907409b01a9
Design-Document: http://bit.ly/v8-zero-cost-async-stack-traces
Reviewed-on: https://chromium-review.googlesource.com/c/1256762
Commit-Queue: Benedikt Meurer <bmeurer@chromium.org>
Reviewed-by: Adam Klein <adamk@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56363}
1325 lines
48 KiB
Plaintext
1325 lines
48 KiB
Plaintext
#
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# Autogenerated by generate-bytecode-expectations.
|
|
#
|
|
|
|
---
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wrap: no
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test function name: f
|
|
|
|
---
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snippet: "
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function f(arr) {
|
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for (let x of arr) { let y = x; }
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}
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f([1, 2, 3]);
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"
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frame size: 17
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|
parameter count: 2
|
|
bytecode array length: 245
|
|
bytecodes: [
|
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/* 10 E> */ B(StackCheck),
|
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B(LdaZero),
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|
B(Star), R(7),
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|
B(Mov), R(context), R(13),
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|
B(Mov), R(context), R(14),
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|
/* 34 S> */ B(LdaNamedProperty), R(arg0), U8(0), U8(0),
|
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B(Star), R(16),
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|
B(CallProperty0), R(16), R(arg0), U8(2),
|
|
B(Mov), R(arg0), R(15),
|
|
B(JumpIfJSReceiver), U8(7),
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|
B(CallRuntime), U16(Runtime::kThrowSymbolIteratorInvalid), R(0), U8(0),
|
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B(Star), R(4),
|
|
/* 34 E> */ B(LdaNamedProperty), R(4), U8(1), U8(4),
|
|
B(Star), R(5),
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|
/* 29 S> */ B(CallProperty0), R(5), R(4), U8(6),
|
|
B(Star), R(6),
|
|
/* 29 E> */ B(InvokeIntrinsic), U8(Runtime::k_IsJSReceiver), R(6), U8(1),
|
|
B(ToBooleanLogicalNot),
|
|
B(JumpIfFalse), U8(7),
|
|
B(CallRuntime), U16(Runtime::kThrowIteratorResultNotAnObject), R(6), U8(1),
|
|
B(LdaNamedProperty), R(6), U8(2), U8(8),
|
|
B(JumpIfToBooleanTrue), U8(28),
|
|
B(LdaNamedProperty), R(6), U8(3), U8(10),
|
|
B(Star), R(8),
|
|
B(LdaSmi), I8(2),
|
|
B(Star), R(7),
|
|
B(Mov), R(8), R(3),
|
|
/* 20 E> */ B(StackCheck),
|
|
B(Mov), R(3), R(1),
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|
/* 49 S> */ B(Mov), R(1), R(0),
|
|
B(LdaZero),
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|
B(Star), R(7),
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|
B(JumpLoop), U8(47), I8(0),
|
|
B(Jump), U8(33),
|
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B(Star), R(15),
|
|
/* 49 E> */ B(CreateCatchContext), R(15), U8(4),
|
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B(PushContext), R(15),
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|
B(Star), R(14),
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|
B(LdaSmi), I8(2),
|
|
B(TestEqualStrict), R(7), U8(12),
|
|
B(JumpIfFalse), U8(6),
|
|
B(LdaSmi), I8(1),
|
|
B(Star), R(7),
|
|
B(LdaImmutableCurrentContextSlot), U8(4),
|
|
B(Star), R(16),
|
|
B(CallRuntime), U16(Runtime::kReThrow), R(16), U8(1),
|
|
B(PopContext), R(15),
|
|
B(LdaSmi), I8(-1),
|
|
B(Star), R(12),
|
|
B(Star), R(11),
|
|
B(Jump), U8(7),
|
|
B(Star), R(12),
|
|
B(LdaZero),
|
|
B(Star), R(11),
|
|
B(LdaTheHole),
|
|
B(SetPendingMessage),
|
|
B(Star), R(13),
|
|
B(LdaZero),
|
|
B(TestEqualStrict), R(7), U8(13),
|
|
B(JumpIfTrue), U8(90),
|
|
B(LdaNamedProperty), R(4), U8(5), U8(14),
|
|
B(Star), R(9),
|
|
B(TestUndetectable),
|
|
B(JumpIfFalse), U8(4),
|
|
B(Jump), U8(79),
|
|
B(LdaSmi), I8(1),
|
|
B(TestEqualStrict), R(7), U8(16),
|
|
B(JumpIfFalse), U8(47),
|
|
B(Ldar), R(9),
|
|
B(TestTypeOf), U8(6),
|
|
B(JumpIfFalse), U8(4),
|
|
B(Jump), U8(18),
|
|
B(Wide), B(LdaSmi), I16(154),
|
|
B(Star), R(14),
|
|
B(LdaConstant), U8(6),
|
|
B(Star), R(15),
|
|
B(CallRuntime), U16(Runtime::kNewTypeError), R(14), U8(2),
|
|
B(Throw),
|
|
B(Mov), R(context), R(14),
|
|
B(Mov), R(9), R(15),
|
|
B(Mov), R(4), R(16),
|
|
B(InvokeIntrinsic), U8(Runtime::k_Call), R(15), U8(2),
|
|
B(Jump), U8(6),
|
|
B(LdaTheHole),
|
|
B(SetPendingMessage),
|
|
B(Ldar), R(14),
|
|
B(Jump), U8(27),
|
|
B(Mov), R(9), R(14),
|
|
B(Mov), R(4), R(15),
|
|
B(InvokeIntrinsic), U8(Runtime::k_Call), R(14), U8(2),
|
|
B(Star), R(10),
|
|
B(InvokeIntrinsic), U8(Runtime::k_IsJSReceiver), R(10), U8(1),
|
|
B(JumpIfToBooleanFalse), U8(4),
|
|
B(Jump), U8(7),
|
|
B(CallRuntime), U16(Runtime::kThrowIteratorResultNotAnObject), R(10), U8(1),
|
|
B(Ldar), R(13),
|
|
B(SetPendingMessage),
|
|
B(LdaZero),
|
|
B(TestReferenceEqual), R(11),
|
|
B(JumpIfFalse), U8(5),
|
|
B(Ldar), R(12),
|
|
B(ReThrow),
|
|
B(LdaUndefined),
|
|
/* 54 S> */ B(Return),
|
|
]
|
|
constant pool: [
|
|
SYMBOL_TYPE,
|
|
ONE_BYTE_INTERNALIZED_STRING_TYPE ["next"],
|
|
ONE_BYTE_INTERNALIZED_STRING_TYPE ["done"],
|
|
ONE_BYTE_INTERNALIZED_STRING_TYPE ["value"],
|
|
SCOPE_INFO_TYPE,
|
|
ONE_BYTE_INTERNALIZED_STRING_TYPE ["return"],
|
|
ONE_BYTE_INTERNALIZED_STRING_TYPE [""],
|
|
]
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|
handlers: [
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|
[7, 121, 129],
|
|
[10, 88, 90],
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|
[189, 199, 201],
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]
|
|
|
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---
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snippet: "
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function f(arr) {
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for (let x of arr) { eval('1'); }
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}
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f([1, 2, 3]);
|
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"
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frame size: 24
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|
parameter count: 2
|
|
bytecode array length: 325
|
|
bytecodes: [
|
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B(CreateFunctionContext), U8(0), U8(4),
|
|
B(PushContext), R(9),
|
|
B(Ldar), R(this),
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|
B(StaCurrentContextSlot), U8(5),
|
|
B(Ldar), R(arg0),
|
|
B(StaCurrentContextSlot), U8(4),
|
|
B(CreateMappedArguments),
|
|
B(StaCurrentContextSlot), U8(7),
|
|
B(Ldar), R(8),
|
|
B(StaCurrentContextSlot), U8(6),
|
|
/* 10 E> */ B(StackCheck),
|
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B(CreateBlockContext), U8(1),
|
|
B(PushContext), R(10),
|
|
B(LdaTheHole),
|
|
B(StaCurrentContextSlot), U8(4),
|
|
B(LdaZero),
|
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B(Star), R(4),
|
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B(Mov), R(context), R(13),
|
|
B(Mov), R(context), R(14),
|
|
/* 34 S> */ B(LdaContextSlot), R(10), U8(4), U8(0),
|
|
B(Star), R(15),
|
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B(LdaNamedProperty), R(15), U8(2), U8(0),
|
|
B(Star), R(16),
|
|
B(CallProperty0), R(16), R(15), U8(2),
|
|
B(JumpIfJSReceiver), U8(7),
|
|
B(CallRuntime), U16(Runtime::kThrowSymbolIteratorInvalid), R(0), U8(0),
|
|
B(Star), R(1),
|
|
/* 34 E> */ B(LdaNamedProperty), R(1), U8(3), U8(4),
|
|
B(Star), R(2),
|
|
/* 29 S> */ B(CallProperty0), R(2), R(1), U8(6),
|
|
B(Star), R(3),
|
|
/* 29 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(8),
|
|
B(JumpIfToBooleanTrue), U8(76),
|
|
B(LdaNamedProperty), R(3), U8(5), U8(10),
|
|
B(Star), R(5),
|
|
B(LdaSmi), I8(2),
|
|
B(Star), R(4),
|
|
B(Mov), R(5), R(0),
|
|
/* 20 E> */ B(StackCheck),
|
|
B(CreateBlockContext), U8(6),
|
|
B(PushContext), R(15),
|
|
B(LdaTheHole),
|
|
B(StaCurrentContextSlot), U8(4),
|
|
B(Ldar), R(5),
|
|
B(StaCurrentContextSlot), U8(4),
|
|
/* 41 S> */ B(LdaLookupGlobalSlot), U8(7), U8(12), U8(3),
|
|
B(Star), R(16),
|
|
B(LdaConstant), U8(8),
|
|
B(Star), R(17),
|
|
B(LdaZero),
|
|
B(Star), R(21),
|
|
B(LdaSmi), I8(37),
|
|
B(Star), R(22),
|
|
B(LdaSmi), I8(41),
|
|
B(Star), R(23),
|
|
B(Mov), R(16), R(18),
|
|
B(Mov), R(17), R(19),
|
|
B(Mov), R(closure), R(20),
|
|
B(CallRuntime), U16(Runtime::kResolvePossiblyDirectEval), R(18), U8(6),
|
|
B(Star), R(16),
|
|
/* 41 E> */ B(CallUndefinedReceiver1), R(16), R(17), U8(14),
|
|
B(PopContext), R(15),
|
|
B(LdaZero),
|
|
B(Star), R(4),
|
|
B(JumpLoop), U8(95), I8(0),
|
|
B(Jump), U8(33),
|
|
B(Star), R(15),
|
|
B(CreateCatchContext), R(15), U8(9),
|
|
B(PushContext), R(15),
|
|
B(Star), R(14),
|
|
B(LdaSmi), I8(2),
|
|
B(TestEqualStrict), R(4), U8(16),
|
|
B(JumpIfFalse), U8(6),
|
|
B(LdaSmi), I8(1),
|
|
B(Star), R(4),
|
|
B(LdaImmutableCurrentContextSlot), U8(4),
|
|
B(Star), R(16),
|
|
B(CallRuntime), U16(Runtime::kReThrow), R(16), U8(1),
|
|
B(PopContext), R(15),
|
|
B(LdaSmi), I8(-1),
|
|
B(Star), R(12),
|
|
B(Star), R(11),
|
|
B(Jump), U8(7),
|
|
B(Star), R(12),
|
|
B(LdaZero),
|
|
B(Star), R(11),
|
|
B(LdaTheHole),
|
|
B(SetPendingMessage),
|
|
B(Star), R(13),
|
|
B(LdaZero),
|
|
B(TestEqualStrict), R(4), U8(17),
|
|
B(JumpIfTrue), U8(90),
|
|
B(LdaNamedProperty), R(1), U8(10), U8(18),
|
|
B(Star), R(6),
|
|
B(TestUndetectable),
|
|
B(JumpIfFalse), U8(4),
|
|
B(Jump), U8(79),
|
|
B(LdaSmi), I8(1),
|
|
B(TestEqualStrict), R(4), U8(20),
|
|
B(JumpIfFalse), U8(47),
|
|
B(Ldar), R(6),
|
|
B(TestTypeOf), U8(6),
|
|
B(JumpIfFalse), U8(4),
|
|
B(Jump), U8(18),
|
|
B(Wide), B(LdaSmi), I16(154),
|
|
B(Star), R(14),
|
|
B(LdaConstant), U8(11),
|
|
B(Star), R(15),
|
|
B(CallRuntime), U16(Runtime::kNewTypeError), R(14), U8(2),
|
|
B(Throw),
|
|
B(Mov), R(context), R(14),
|
|
B(Mov), R(6), R(15),
|
|
B(Mov), R(1), R(16),
|
|
B(InvokeIntrinsic), U8(Runtime::k_Call), R(15), U8(2),
|
|
B(Jump), U8(6),
|
|
B(LdaTheHole),
|
|
B(SetPendingMessage),
|
|
B(Ldar), R(14),
|
|
B(Jump), U8(27),
|
|
B(Mov), R(6), R(14),
|
|
B(Mov), R(1), R(15),
|
|
B(InvokeIntrinsic), U8(Runtime::k_Call), R(14), 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(13),
|
|
B(SetPendingMessage),
|
|
B(LdaZero),
|
|
B(TestReferenceEqual), R(11),
|
|
B(JumpIfFalse), U8(5),
|
|
B(Ldar), R(12),
|
|
B(ReThrow),
|
|
B(PopContext), R(10),
|
|
B(LdaUndefined),
|
|
/* 54 S> */ B(Return),
|
|
]
|
|
constant pool: [
|
|
SCOPE_INFO_TYPE,
|
|
SCOPE_INFO_TYPE,
|
|
SYMBOL_TYPE,
|
|
ONE_BYTE_INTERNALIZED_STRING_TYPE ["next"],
|
|
ONE_BYTE_INTERNALIZED_STRING_TYPE ["done"],
|
|
ONE_BYTE_INTERNALIZED_STRING_TYPE ["value"],
|
|
SCOPE_INFO_TYPE,
|
|
ONE_BYTE_INTERNALIZED_STRING_TYPE ["eval"],
|
|
ONE_BYTE_INTERNALIZED_STRING_TYPE ["1"],
|
|
SCOPE_INFO_TYPE,
|
|
ONE_BYTE_INTERNALIZED_STRING_TYPE ["return"],
|
|
ONE_BYTE_INTERNALIZED_STRING_TYPE [""],
|
|
]
|
|
handlers: [
|
|
[34, 199, 207],
|
|
[37, 166, 168],
|
|
[267, 277, 279],
|
|
]
|
|
|
|
---
|
|
snippet: "
|
|
function f(arr) {
|
|
for (let x of arr) { (function() { return x; })(); }
|
|
}
|
|
f([1, 2, 3]);
|
|
"
|
|
frame size: 15
|
|
parameter count: 2
|
|
bytecode array length: 261
|
|
bytecodes: [
|
|
/* 10 E> */ B(StackCheck),
|
|
B(LdaZero),
|
|
B(Star), R(5),
|
|
B(Mov), R(context), R(11),
|
|
B(Mov), R(context), R(12),
|
|
/* 34 S> */ B(LdaNamedProperty), R(arg0), U8(0), U8(0),
|
|
B(Star), R(14),
|
|
B(CallProperty0), R(14), R(arg0), U8(2),
|
|
B(Mov), R(arg0), R(13),
|
|
B(JumpIfJSReceiver), U8(7),
|
|
B(CallRuntime), U16(Runtime::kThrowSymbolIteratorInvalid), R(0), U8(0),
|
|
B(Star), R(2),
|
|
/* 34 E> */ B(LdaNamedProperty), R(2), U8(1), U8(4),
|
|
B(Star), R(3),
|
|
/* 29 S> */ B(CallProperty0), R(3), R(2), U8(6),
|
|
B(Star), R(4),
|
|
/* 29 E> */ B(InvokeIntrinsic), U8(Runtime::k_IsJSReceiver), R(4), U8(1),
|
|
B(ToBooleanLogicalNot),
|
|
B(JumpIfFalse), U8(7),
|
|
B(CallRuntime), U16(Runtime::kThrowIteratorResultNotAnObject), R(4), U8(1),
|
|
B(LdaNamedProperty), R(4), U8(2), U8(8),
|
|
B(JumpIfToBooleanTrue), U8(44),
|
|
B(LdaNamedProperty), R(4), U8(3), U8(10),
|
|
B(Star), R(6),
|
|
B(LdaSmi), I8(2),
|
|
B(Star), R(5),
|
|
B(Mov), R(6), R(1),
|
|
/* 20 E> */ B(StackCheck),
|
|
B(CreateBlockContext), U8(4),
|
|
B(PushContext), R(13),
|
|
B(LdaTheHole),
|
|
B(StaCurrentContextSlot), U8(4),
|
|
B(Ldar), R(6),
|
|
B(StaCurrentContextSlot), U8(4),
|
|
/* 41 S> */ B(CreateClosure), U8(5), U8(12), U8(2),
|
|
B(Star), R(14),
|
|
/* 67 E> */ B(CallUndefinedReceiver0), R(14), U8(13),
|
|
B(PopContext), R(13),
|
|
B(LdaZero),
|
|
B(Star), R(5),
|
|
B(JumpLoop), U8(63), I8(0),
|
|
B(Jump), U8(33),
|
|
B(Star), R(13),
|
|
B(CreateCatchContext), R(13), U8(6),
|
|
B(PushContext), R(13),
|
|
B(Star), R(12),
|
|
B(LdaSmi), I8(2),
|
|
B(TestEqualStrict), R(5), U8(15),
|
|
B(JumpIfFalse), U8(6),
|
|
B(LdaSmi), I8(1),
|
|
B(Star), R(5),
|
|
B(LdaImmutableCurrentContextSlot), U8(4),
|
|
B(Star), R(14),
|
|
B(CallRuntime), U16(Runtime::kReThrow), R(14), U8(1),
|
|
B(PopContext), R(13),
|
|
B(LdaSmi), I8(-1),
|
|
B(Star), R(10),
|
|
B(Star), R(9),
|
|
B(Jump), U8(7),
|
|
B(Star), R(10),
|
|
B(LdaZero),
|
|
B(Star), R(9),
|
|
B(LdaTheHole),
|
|
B(SetPendingMessage),
|
|
B(Star), R(11),
|
|
B(LdaZero),
|
|
B(TestEqualStrict), R(5), U8(16),
|
|
B(JumpIfTrue), U8(90),
|
|
B(LdaNamedProperty), R(2), U8(7), U8(17),
|
|
B(Star), R(7),
|
|
B(TestUndetectable),
|
|
B(JumpIfFalse), U8(4),
|
|
B(Jump), U8(79),
|
|
B(LdaSmi), I8(1),
|
|
B(TestEqualStrict), R(5), U8(19),
|
|
B(JumpIfFalse), U8(47),
|
|
B(Ldar), R(7),
|
|
B(TestTypeOf), U8(6),
|
|
B(JumpIfFalse), U8(4),
|
|
B(Jump), U8(18),
|
|
B(Wide), B(LdaSmi), I16(154),
|
|
B(Star), R(12),
|
|
B(LdaConstant), U8(8),
|
|
B(Star), R(13),
|
|
B(CallRuntime), U16(Runtime::kNewTypeError), R(12), U8(2),
|
|
B(Throw),
|
|
B(Mov), R(context), R(12),
|
|
B(Mov), R(7), R(13),
|
|
B(Mov), R(2), R(14),
|
|
B(InvokeIntrinsic), U8(Runtime::k_Call), R(13), U8(2),
|
|
B(Jump), U8(6),
|
|
B(LdaTheHole),
|
|
B(SetPendingMessage),
|
|
B(Ldar), R(12),
|
|
B(Jump), U8(27),
|
|
B(Mov), R(7), R(12),
|
|
B(Mov), R(2), R(13),
|
|
B(InvokeIntrinsic), U8(Runtime::k_Call), R(12), U8(2),
|
|
B(Star), R(8),
|
|
B(InvokeIntrinsic), U8(Runtime::k_IsJSReceiver), R(8), U8(1),
|
|
B(JumpIfToBooleanFalse), U8(4),
|
|
B(Jump), U8(7),
|
|
B(CallRuntime), U16(Runtime::kThrowIteratorResultNotAnObject), R(8), U8(1),
|
|
B(Ldar), R(11),
|
|
B(SetPendingMessage),
|
|
B(LdaZero),
|
|
B(TestReferenceEqual), R(9),
|
|
B(JumpIfFalse), U8(5),
|
|
B(Ldar), R(10),
|
|
B(ReThrow),
|
|
B(LdaUndefined),
|
|
/* 73 S> */ B(Return),
|
|
]
|
|
constant pool: [
|
|
SYMBOL_TYPE,
|
|
ONE_BYTE_INTERNALIZED_STRING_TYPE ["next"],
|
|
ONE_BYTE_INTERNALIZED_STRING_TYPE ["done"],
|
|
ONE_BYTE_INTERNALIZED_STRING_TYPE ["value"],
|
|
SCOPE_INFO_TYPE,
|
|
SHARED_FUNCTION_INFO_TYPE,
|
|
SCOPE_INFO_TYPE,
|
|
ONE_BYTE_INTERNALIZED_STRING_TYPE ["return"],
|
|
ONE_BYTE_INTERNALIZED_STRING_TYPE [""],
|
|
]
|
|
handlers: [
|
|
[7, 137, 145],
|
|
[10, 104, 106],
|
|
[205, 215, 217],
|
|
]
|
|
|
|
---
|
|
snippet: "
|
|
function f(arr) {
|
|
for (let { x, y } of arr) { let z = x + y; }
|
|
}
|
|
f([{ x: 0, y: 3 }, { x: 1, y: 9 }, { x: -12, y: 17 }]);
|
|
"
|
|
frame size: 20
|
|
parameter count: 2
|
|
bytecode array length: 283
|
|
bytecodes: [
|
|
/* 10 E> */ B(StackCheck),
|
|
B(LdaZero),
|
|
B(Star), R(10),
|
|
B(Mov), R(context), R(16),
|
|
B(Mov), R(context), R(17),
|
|
/* 41 S> */ B(LdaNamedProperty), R(arg0), U8(0), U8(0),
|
|
B(Star), R(19),
|
|
B(CallProperty0), R(19), R(arg0), U8(2),
|
|
B(Mov), R(arg0), R(18),
|
|
B(JumpIfJSReceiver), U8(7),
|
|
B(CallRuntime), U16(Runtime::kThrowSymbolIteratorInvalid), R(0), U8(0),
|
|
B(Star), R(7),
|
|
/* 41 E> */ B(LdaNamedProperty), R(7), U8(1), U8(4),
|
|
B(Star), R(8),
|
|
/* 36 S> */ B(CallProperty0), R(8), R(7), U8(6),
|
|
B(Star), R(9),
|
|
/* 36 E> */ B(InvokeIntrinsic), U8(Runtime::k_IsJSReceiver), R(9), U8(1),
|
|
B(ToBooleanLogicalNot),
|
|
B(JumpIfFalse), U8(7),
|
|
B(CallRuntime), U16(Runtime::kThrowIteratorResultNotAnObject), R(9), U8(1),
|
|
B(LdaNamedProperty), R(9), U8(2), U8(8),
|
|
B(JumpIfToBooleanTrue), U8(66),
|
|
B(LdaNamedProperty), R(9), U8(3), U8(10),
|
|
B(Star), R(11),
|
|
B(LdaSmi), I8(2),
|
|
B(Star), R(10),
|
|
B(Mov), R(11), R(5),
|
|
/* 20 E> */ B(StackCheck),
|
|
B(Mov), R(5), R(6),
|
|
B(Ldar), R(6),
|
|
B(JumpIfUndefined), U8(6),
|
|
B(Ldar), R(6),
|
|
B(JumpIfNotNull), U8(16),
|
|
B(LdaSmi), I8(81),
|
|
B(Star), R(18),
|
|
B(LdaConstant), U8(4),
|
|
B(Star), R(19),
|
|
B(CallRuntime), U16(Runtime::kNewTypeError), R(18), U8(2),
|
|
/* 31 E> */ B(Throw),
|
|
/* 31 S> */ B(LdaNamedProperty), R(6), U8(4), U8(12),
|
|
B(Star), R(1),
|
|
/* 34 S> */ B(LdaNamedProperty), R(6), U8(5), U8(14),
|
|
B(Star), R(2),
|
|
/* 56 S> */ B(Ldar), R(2),
|
|
/* 58 E> */ B(Add), R(1), U8(16),
|
|
B(Star), R(0),
|
|
B(LdaZero),
|
|
B(Star), R(10),
|
|
B(JumpLoop), U8(85), I8(0),
|
|
B(Jump), U8(33),
|
|
B(Star), R(18),
|
|
/* 56 E> */ B(CreateCatchContext), R(18), U8(6),
|
|
B(PushContext), R(18),
|
|
B(Star), R(17),
|
|
B(LdaSmi), I8(2),
|
|
B(TestEqualStrict), R(10), U8(17),
|
|
B(JumpIfFalse), U8(6),
|
|
B(LdaSmi), I8(1),
|
|
B(Star), R(10),
|
|
B(LdaImmutableCurrentContextSlot), U8(4),
|
|
B(Star), R(19),
|
|
B(CallRuntime), U16(Runtime::kReThrow), R(19), U8(1),
|
|
B(PopContext), R(18),
|
|
B(LdaSmi), I8(-1),
|
|
B(Star), R(15),
|
|
B(Star), R(14),
|
|
B(Jump), U8(7),
|
|
B(Star), R(15),
|
|
B(LdaZero),
|
|
B(Star), R(14),
|
|
B(LdaTheHole),
|
|
B(SetPendingMessage),
|
|
B(Star), R(16),
|
|
B(LdaZero),
|
|
B(TestEqualStrict), R(10), U8(18),
|
|
B(JumpIfTrue), U8(90),
|
|
B(LdaNamedProperty), R(7), U8(7), U8(19),
|
|
B(Star), R(12),
|
|
B(TestUndetectable),
|
|
B(JumpIfFalse), U8(4),
|
|
B(Jump), U8(79),
|
|
B(LdaSmi), I8(1),
|
|
B(TestEqualStrict), R(10), U8(21),
|
|
B(JumpIfFalse), U8(47),
|
|
B(Ldar), R(12),
|
|
B(TestTypeOf), U8(6),
|
|
B(JumpIfFalse), U8(4),
|
|
B(Jump), U8(18),
|
|
B(Wide), B(LdaSmi), I16(154),
|
|
B(Star), R(17),
|
|
B(LdaConstant), U8(8),
|
|
B(Star), R(18),
|
|
B(CallRuntime), U16(Runtime::kNewTypeError), R(17), U8(2),
|
|
B(Throw),
|
|
B(Mov), R(context), R(17),
|
|
B(Mov), R(12), R(18),
|
|
B(Mov), R(7), R(19),
|
|
B(InvokeIntrinsic), U8(Runtime::k_Call), R(18), U8(2),
|
|
B(Jump), U8(6),
|
|
B(LdaTheHole),
|
|
B(SetPendingMessage),
|
|
B(Ldar), R(17),
|
|
B(Jump), U8(27),
|
|
B(Mov), R(12), R(17),
|
|
B(Mov), R(7), R(18),
|
|
B(InvokeIntrinsic), U8(Runtime::k_Call), R(17), U8(2),
|
|
B(Star), R(13),
|
|
B(InvokeIntrinsic), U8(Runtime::k_IsJSReceiver), R(13), U8(1),
|
|
B(JumpIfToBooleanFalse), U8(4),
|
|
B(Jump), U8(7),
|
|
B(CallRuntime), U16(Runtime::kThrowIteratorResultNotAnObject), R(13), U8(1),
|
|
B(Ldar), R(16),
|
|
B(SetPendingMessage),
|
|
B(LdaZero),
|
|
B(TestReferenceEqual), R(14),
|
|
B(JumpIfFalse), U8(5),
|
|
B(Ldar), R(15),
|
|
B(ReThrow),
|
|
B(LdaUndefined),
|
|
/* 65 S> */ B(Return),
|
|
]
|
|
constant pool: [
|
|
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 ["x"],
|
|
ONE_BYTE_INTERNALIZED_STRING_TYPE ["y"],
|
|
SCOPE_INFO_TYPE,
|
|
ONE_BYTE_INTERNALIZED_STRING_TYPE ["return"],
|
|
ONE_BYTE_INTERNALIZED_STRING_TYPE [""],
|
|
]
|
|
handlers: [
|
|
[7, 159, 167],
|
|
[10, 126, 128],
|
|
[227, 237, 239],
|
|
]
|
|
|
|
---
|
|
snippet: "
|
|
function* f(arr) {
|
|
for (let x of arr) { let y = x; }
|
|
}
|
|
f([1, 2, 3]);
|
|
"
|
|
frame size: 18
|
|
parameter count: 2
|
|
bytecode array length: 286
|
|
bytecodes: [
|
|
B(SwitchOnGeneratorState), R(3), U8(0), U8(1),
|
|
B(Mov), R(closure), R(12),
|
|
B(Mov), R(this), R(13),
|
|
B(InvokeIntrinsic), U8(Runtime::k_CreateJSGeneratorObject), R(12), U8(2),
|
|
B(Star), R(3),
|
|
/* 11 E> */ B(StackCheck),
|
|
/* 11 E> */ B(SuspendGenerator), R(3), R(0), U8(12), U8(0),
|
|
B(ResumeGenerator), R(3), R(0), U8(12),
|
|
B(Star), R(12),
|
|
B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(3), U8(1),
|
|
B(SwitchOnSmiNoFeedback), U8(1), U8(2), I8(0),
|
|
B(Ldar), R(12),
|
|
/* 11 E> */ B(Throw),
|
|
B(Ldar), R(12),
|
|
/* 55 S> */ B(Return),
|
|
B(LdaZero),
|
|
B(Star), R(8),
|
|
B(Mov), R(context), R(14),
|
|
B(Mov), R(context), R(15),
|
|
/* 35 S> */ B(LdaNamedProperty), R(arg0), U8(3), U8(0),
|
|
B(Star), R(17),
|
|
B(CallProperty0), R(17), R(arg0), U8(2),
|
|
B(Mov), R(arg0), R(16),
|
|
B(JumpIfJSReceiver), U8(7),
|
|
B(CallRuntime), U16(Runtime::kThrowSymbolIteratorInvalid), R(0), U8(0),
|
|
B(Star), R(5),
|
|
/* 35 E> */ B(LdaNamedProperty), R(5), U8(4), U8(4),
|
|
B(Star), R(6),
|
|
/* 30 S> */ B(CallProperty0), R(6), R(5), U8(6),
|
|
B(Star), R(7),
|
|
/* 30 E> */ B(InvokeIntrinsic), U8(Runtime::k_IsJSReceiver), R(7), U8(1),
|
|
B(ToBooleanLogicalNot),
|
|
B(JumpIfFalse), U8(7),
|
|
B(CallRuntime), U16(Runtime::kThrowIteratorResultNotAnObject), R(7), U8(1),
|
|
B(LdaNamedProperty), R(7), U8(5), U8(8),
|
|
B(JumpIfToBooleanTrue), U8(28),
|
|
B(LdaNamedProperty), R(7), U8(6), U8(10),
|
|
B(Star), R(9),
|
|
B(LdaSmi), I8(2),
|
|
B(Star), R(8),
|
|
B(Mov), R(9), R(4),
|
|
/* 21 E> */ B(StackCheck),
|
|
B(Mov), R(4), R(1),
|
|
/* 50 S> */ B(Mov), R(1), R(0),
|
|
B(LdaZero),
|
|
B(Star), R(8),
|
|
B(JumpLoop), U8(47), I8(0),
|
|
B(Jump), U8(33),
|
|
B(Star), R(16),
|
|
/* 50 E> */ B(CreateCatchContext), R(16), U8(7),
|
|
B(PushContext), R(16),
|
|
B(Star), R(15),
|
|
B(LdaSmi), I8(2),
|
|
B(TestEqualStrict), R(8), U8(12),
|
|
B(JumpIfFalse), U8(6),
|
|
B(LdaSmi), I8(1),
|
|
B(Star), R(8),
|
|
B(LdaImmutableCurrentContextSlot), U8(4),
|
|
B(Star), R(17),
|
|
B(CallRuntime), U16(Runtime::kReThrow), R(17), U8(1),
|
|
B(PopContext), R(16),
|
|
B(LdaSmi), I8(-1),
|
|
B(Star), R(13),
|
|
B(Star), R(12),
|
|
B(Jump), U8(7),
|
|
B(Star), R(13),
|
|
B(LdaZero),
|
|
B(Star), R(12),
|
|
B(LdaTheHole),
|
|
B(SetPendingMessage),
|
|
B(Star), R(14),
|
|
B(LdaZero),
|
|
B(TestEqualStrict), R(8), U8(13),
|
|
B(JumpIfTrue), U8(90),
|
|
B(LdaNamedProperty), R(5), U8(8), U8(14),
|
|
B(Star), R(10),
|
|
B(TestUndetectable),
|
|
B(JumpIfFalse), U8(4),
|
|
B(Jump), U8(79),
|
|
B(LdaSmi), I8(1),
|
|
B(TestEqualStrict), R(8), U8(16),
|
|
B(JumpIfFalse), U8(47),
|
|
B(Ldar), R(10),
|
|
B(TestTypeOf), U8(6),
|
|
B(JumpIfFalse), U8(4),
|
|
B(Jump), U8(18),
|
|
B(Wide), B(LdaSmi), I16(154),
|
|
B(Star), R(15),
|
|
B(LdaConstant), U8(9),
|
|
B(Star), R(16),
|
|
B(CallRuntime), U16(Runtime::kNewTypeError), R(15), U8(2),
|
|
B(Throw),
|
|
B(Mov), R(context), R(15),
|
|
B(Mov), R(10), R(16),
|
|
B(Mov), R(5), R(17),
|
|
B(InvokeIntrinsic), U8(Runtime::k_Call), R(16), U8(2),
|
|
B(Jump), U8(6),
|
|
B(LdaTheHole),
|
|
B(SetPendingMessage),
|
|
B(Ldar), R(15),
|
|
B(Jump), U8(27),
|
|
B(Mov), R(10), R(15),
|
|
B(Mov), R(5), R(16),
|
|
B(InvokeIntrinsic), U8(Runtime::k_Call), R(15), U8(2),
|
|
B(Star), R(11),
|
|
B(InvokeIntrinsic), U8(Runtime::k_IsJSReceiver), R(11), U8(1),
|
|
B(JumpIfToBooleanFalse), U8(4),
|
|
B(Jump), U8(7),
|
|
B(CallRuntime), U16(Runtime::kThrowIteratorResultNotAnObject), R(11), U8(1),
|
|
B(Ldar), R(14),
|
|
B(SetPendingMessage),
|
|
B(LdaZero),
|
|
B(TestReferenceEqual), R(12),
|
|
B(JumpIfFalse), U8(5),
|
|
B(Ldar), R(13),
|
|
B(ReThrow),
|
|
B(LdaUndefined),
|
|
/* 55 S> */ B(Return),
|
|
]
|
|
constant pool: [
|
|
Smi [22],
|
|
Smi [10],
|
|
Smi [7],
|
|
SYMBOL_TYPE,
|
|
ONE_BYTE_INTERNALIZED_STRING_TYPE ["next"],
|
|
ONE_BYTE_INTERNALIZED_STRING_TYPE ["done"],
|
|
ONE_BYTE_INTERNALIZED_STRING_TYPE ["value"],
|
|
SCOPE_INFO_TYPE,
|
|
ONE_BYTE_INTERNALIZED_STRING_TYPE ["return"],
|
|
ONE_BYTE_INTERNALIZED_STRING_TYPE [""],
|
|
]
|
|
handlers: [
|
|
[48, 162, 170],
|
|
[51, 129, 131],
|
|
[230, 240, 242],
|
|
]
|
|
|
|
---
|
|
snippet: "
|
|
function* f(arr) {
|
|
for (let x of arr) yield x;
|
|
}
|
|
f([1, 2, 3]);
|
|
"
|
|
frame size: 17
|
|
parameter count: 2
|
|
bytecode array length: 330
|
|
bytecodes: [
|
|
B(SwitchOnGeneratorState), R(2), U8(0), U8(2),
|
|
B(Mov), R(closure), R(11),
|
|
B(Mov), R(this), R(12),
|
|
B(InvokeIntrinsic), U8(Runtime::k_CreateJSGeneratorObject), R(11), U8(2),
|
|
B(Star), R(2),
|
|
/* 11 E> */ B(StackCheck),
|
|
/* 11 E> */ B(SuspendGenerator), R(2), R(0), U8(11), U8(0),
|
|
B(ResumeGenerator), R(2), R(0), U8(11),
|
|
B(Star), R(11),
|
|
B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(2), U8(1),
|
|
B(SwitchOnSmiNoFeedback), U8(2), U8(2), I8(0),
|
|
B(Ldar), R(11),
|
|
/* 11 E> */ B(Throw),
|
|
B(Ldar), R(11),
|
|
/* 49 S> */ B(Return),
|
|
B(LdaZero),
|
|
B(Star), R(7),
|
|
B(Mov), R(context), R(13),
|
|
B(Mov), R(context), R(14),
|
|
/* 35 S> */ B(LdaNamedProperty), R(arg0), U8(4), U8(0),
|
|
B(Star), R(16),
|
|
B(CallProperty0), R(16), R(arg0), U8(2),
|
|
B(Mov), R(arg0), R(15),
|
|
B(JumpIfJSReceiver), U8(7),
|
|
B(CallRuntime), U16(Runtime::kThrowSymbolIteratorInvalid), R(0), U8(0),
|
|
B(Star), R(4),
|
|
/* 35 E> */ B(LdaNamedProperty), R(4), U8(5), U8(4),
|
|
B(Star), R(5),
|
|
/* 30 S> */ B(CallProperty0), R(5), R(4), U8(6),
|
|
B(Star), R(6),
|
|
/* 30 E> */ B(InvokeIntrinsic), U8(Runtime::k_IsJSReceiver), R(6), U8(1),
|
|
B(ToBooleanLogicalNot),
|
|
B(JumpIfFalse), U8(7),
|
|
B(CallRuntime), U16(Runtime::kThrowIteratorResultNotAnObject), R(6), U8(1),
|
|
B(LdaNamedProperty), R(6), U8(6), U8(8),
|
|
B(JumpIfToBooleanTrue), U8(65),
|
|
B(LdaNamedProperty), R(6), U8(7), U8(10),
|
|
B(Star), R(8),
|
|
B(LdaSmi), I8(2),
|
|
B(Star), R(7),
|
|
B(Mov), R(8), R(3),
|
|
/* 21 E> */ B(StackCheck),
|
|
B(Mov), R(3), R(0),
|
|
/* 40 S> */ B(LdaFalse),
|
|
B(Star), R(16),
|
|
B(Mov), R(0), R(15),
|
|
B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(15), U8(2),
|
|
/* 40 E> */ B(SuspendGenerator), R(2), R(0), U8(15), U8(1),
|
|
B(ResumeGenerator), R(2), R(0), U8(15),
|
|
B(Star), R(15),
|
|
B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(2), U8(1),
|
|
B(SwitchOnSmiNoFeedback), U8(8), U8(2), I8(0),
|
|
B(Ldar), R(15),
|
|
/* 40 E> */ B(Throw),
|
|
B(LdaZero),
|
|
B(Star), R(11),
|
|
B(Mov), R(15), R(12),
|
|
B(Jump), U8(55),
|
|
B(LdaZero),
|
|
B(Star), R(7),
|
|
B(JumpLoop), U8(84), I8(0),
|
|
B(Jump), U8(33),
|
|
B(Star), R(15),
|
|
B(CreateCatchContext), R(15), U8(10),
|
|
B(PushContext), R(15),
|
|
B(Star), R(14),
|
|
B(LdaSmi), I8(2),
|
|
B(TestEqualStrict), R(7), U8(12),
|
|
B(JumpIfFalse), U8(6),
|
|
B(LdaSmi), I8(1),
|
|
B(Star), R(7),
|
|
B(LdaImmutableCurrentContextSlot), U8(4),
|
|
B(Star), R(16),
|
|
B(CallRuntime), U16(Runtime::kReThrow), R(16), U8(1),
|
|
B(PopContext), R(15),
|
|
B(LdaSmi), I8(-1),
|
|
B(Star), R(12),
|
|
B(Star), R(11),
|
|
B(Jump), U8(8),
|
|
B(Star), R(12),
|
|
B(LdaSmi), I8(1),
|
|
B(Star), R(11),
|
|
B(LdaTheHole),
|
|
B(SetPendingMessage),
|
|
B(Star), R(13),
|
|
B(LdaZero),
|
|
B(TestEqualStrict), R(7), U8(13),
|
|
B(JumpIfTrue), U8(90),
|
|
B(LdaNamedProperty), R(4), U8(11), U8(14),
|
|
B(Star), R(9),
|
|
B(TestUndetectable),
|
|
B(JumpIfFalse), U8(4),
|
|
B(Jump), U8(79),
|
|
B(LdaSmi), I8(1),
|
|
B(TestEqualStrict), R(7), U8(16),
|
|
B(JumpIfFalse), U8(47),
|
|
B(Ldar), R(9),
|
|
B(TestTypeOf), U8(6),
|
|
B(JumpIfFalse), U8(4),
|
|
B(Jump), U8(18),
|
|
B(Wide), B(LdaSmi), I16(154),
|
|
B(Star), R(14),
|
|
B(LdaConstant), U8(12),
|
|
B(Star), R(15),
|
|
B(CallRuntime), U16(Runtime::kNewTypeError), R(14), U8(2),
|
|
B(Throw),
|
|
B(Mov), R(context), R(14),
|
|
B(Mov), R(9), R(15),
|
|
B(Mov), R(4), R(16),
|
|
B(InvokeIntrinsic), U8(Runtime::k_Call), R(15), U8(2),
|
|
B(Jump), U8(6),
|
|
B(LdaTheHole),
|
|
B(SetPendingMessage),
|
|
B(Ldar), R(14),
|
|
B(Jump), U8(27),
|
|
B(Mov), R(9), R(14),
|
|
B(Mov), R(4), R(15),
|
|
B(InvokeIntrinsic), U8(Runtime::k_Call), R(14), U8(2),
|
|
B(Star), R(10),
|
|
B(InvokeIntrinsic), U8(Runtime::k_IsJSReceiver), R(10), U8(1),
|
|
B(JumpIfToBooleanFalse), U8(4),
|
|
B(Jump), U8(7),
|
|
B(CallRuntime), U16(Runtime::kThrowIteratorResultNotAnObject), R(10), U8(1),
|
|
B(Ldar), R(13),
|
|
B(SetPendingMessage),
|
|
B(Ldar), R(11),
|
|
B(SwitchOnSmiNoFeedback), U8(13), U8(2), I8(0),
|
|
B(Jump), U8(8),
|
|
B(Ldar), R(12),
|
|
/* 49 S> */ B(Return),
|
|
B(Ldar), R(12),
|
|
B(ReThrow),
|
|
B(LdaUndefined),
|
|
/* 49 S> */ B(Return),
|
|
]
|
|
constant pool: [
|
|
Smi [22],
|
|
Smi [135],
|
|
Smi [10],
|
|
Smi [7],
|
|
SYMBOL_TYPE,
|
|
ONE_BYTE_INTERNALIZED_STRING_TYPE ["next"],
|
|
ONE_BYTE_INTERNALIZED_STRING_TYPE ["done"],
|
|
ONE_BYTE_INTERNALIZED_STRING_TYPE ["value"],
|
|
Smi [15],
|
|
Smi [7],
|
|
SCOPE_INFO_TYPE,
|
|
ONE_BYTE_INTERNALIZED_STRING_TYPE ["return"],
|
|
ONE_BYTE_INTERNALIZED_STRING_TYPE [""],
|
|
Smi [6],
|
|
Smi [9],
|
|
]
|
|
handlers: [
|
|
[48, 199, 207],
|
|
[51, 166, 168],
|
|
[268, 278, 280],
|
|
]
|
|
|
|
---
|
|
snippet: "
|
|
async function f(arr) {
|
|
for (let x of arr) { let y = x; }
|
|
}
|
|
f([1, 2, 3]);
|
|
"
|
|
frame size: 23
|
|
parameter count: 2
|
|
bytecode array length: 363
|
|
bytecodes: [
|
|
/* 16 E> */ B(StackCheck),
|
|
B(CallJSRuntime), U8(%async_function_promise_create), R(0), U8(0),
|
|
B(Star), R(0),
|
|
B(Mov), R(context), R(15),
|
|
B(Mov), R(context), R(16),
|
|
B(LdaZero),
|
|
B(Star), R(9),
|
|
B(Mov), R(context), R(19),
|
|
B(Mov), R(context), R(20),
|
|
/* 40 S> */ B(LdaNamedProperty), R(arg0), U8(0), U8(0),
|
|
B(Star), R(22),
|
|
B(CallProperty0), R(22), R(arg0), U8(2),
|
|
B(Mov), R(arg0), R(21),
|
|
B(JumpIfJSReceiver), U8(7),
|
|
B(CallRuntime), U16(Runtime::kThrowSymbolIteratorInvalid), R(0), U8(0),
|
|
B(Star), R(6),
|
|
/* 40 E> */ B(LdaNamedProperty), R(6), U8(1), U8(4),
|
|
B(Star), R(7),
|
|
/* 35 S> */ B(CallProperty0), R(7), R(6), U8(6),
|
|
B(Star), R(8),
|
|
/* 35 E> */ B(InvokeIntrinsic), U8(Runtime::k_IsJSReceiver), R(8), U8(1),
|
|
B(ToBooleanLogicalNot),
|
|
B(JumpIfFalse), U8(7),
|
|
B(CallRuntime), U16(Runtime::kThrowIteratorResultNotAnObject), R(8), U8(1),
|
|
B(LdaNamedProperty), R(8), U8(2), U8(8),
|
|
B(JumpIfToBooleanTrue), U8(28),
|
|
B(LdaNamedProperty), R(8), U8(3), U8(10),
|
|
B(Star), R(10),
|
|
B(LdaSmi), I8(2),
|
|
B(Star), R(9),
|
|
B(Mov), R(10), R(5),
|
|
/* 26 E> */ B(StackCheck),
|
|
B(Mov), R(5), R(2),
|
|
/* 55 S> */ B(Mov), R(2), R(1),
|
|
B(LdaZero),
|
|
B(Star), R(9),
|
|
B(JumpLoop), U8(47), I8(0),
|
|
B(Jump), U8(37),
|
|
B(Star), R(21),
|
|
/* 55 E> */ B(CreateCatchContext), R(21), U8(4),
|
|
B(Star), R(20),
|
|
B(LdaTheHole),
|
|
B(SetPendingMessage),
|
|
B(Ldar), R(20),
|
|
B(PushContext), R(21),
|
|
B(LdaSmi), I8(2),
|
|
B(TestEqualStrict), R(9), U8(12),
|
|
B(JumpIfFalse), U8(6),
|
|
B(LdaSmi), I8(1),
|
|
B(Star), R(9),
|
|
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(18),
|
|
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(9), U8(13),
|
|
B(JumpIfTrue), U8(90),
|
|
B(LdaNamedProperty), R(6), U8(5), U8(14),
|
|
B(Star), R(11),
|
|
B(TestUndetectable),
|
|
B(JumpIfFalse), U8(4),
|
|
B(Jump), U8(79),
|
|
B(LdaSmi), I8(1),
|
|
B(TestEqualStrict), R(9), U8(16),
|
|
B(JumpIfFalse), U8(47),
|
|
B(Ldar), R(11),
|
|
B(TestTypeOf), U8(6),
|
|
B(JumpIfFalse), U8(4),
|
|
B(Jump), U8(18),
|
|
B(Wide), B(LdaSmi), I16(154),
|
|
B(Star), R(20),
|
|
B(LdaConstant), U8(6),
|
|
B(Star), R(21),
|
|
B(CallRuntime), U16(Runtime::kNewTypeError), R(20), U8(2),
|
|
B(Throw),
|
|
B(Mov), R(context), R(20),
|
|
B(Mov), R(11), R(21),
|
|
B(Mov), R(6), R(22),
|
|
B(InvokeIntrinsic), U8(Runtime::k_Call), R(21), U8(2),
|
|
B(Jump), U8(6),
|
|
B(LdaTheHole),
|
|
B(SetPendingMessage),
|
|
B(Ldar), R(20),
|
|
B(Jump), U8(27),
|
|
B(Mov), R(11), R(20),
|
|
B(Mov), R(6), R(21),
|
|
B(InvokeIntrinsic), U8(Runtime::k_Call), R(20), U8(2),
|
|
B(Star), R(12),
|
|
B(InvokeIntrinsic), U8(Runtime::k_IsJSReceiver), R(12), U8(1),
|
|
B(JumpIfToBooleanFalse), U8(4),
|
|
B(Jump), U8(7),
|
|
B(CallRuntime), U16(Runtime::kThrowIteratorResultNotAnObject), R(12), U8(1),
|
|
B(Ldar), R(19),
|
|
B(SetPendingMessage),
|
|
B(LdaZero),
|
|
B(TestReferenceEqual), R(17),
|
|
B(JumpIfFalse), U8(5),
|
|
B(Ldar), R(18),
|
|
B(ReThrow),
|
|
B(LdaUndefined),
|
|
B(Star), R(18),
|
|
B(Mov), R(0), R(17),
|
|
B(InvokeIntrinsic), U8(Runtime::k_ResolvePromise), R(17), U8(2),
|
|
B(LdaZero),
|
|
B(Star), R(13),
|
|
B(Mov), R(0), R(14),
|
|
B(Jump), U8(55),
|
|
B(Jump), U8(39),
|
|
B(Star), R(17),
|
|
B(CreateCatchContext), R(17), U8(7),
|
|
B(Star), R(16),
|
|
B(LdaTheHole),
|
|
B(SetPendingMessage),
|
|
B(Ldar), R(16),
|
|
B(PushContext), R(17),
|
|
B(LdaImmutableCurrentContextSlot), U8(4),
|
|
B(Star), R(19),
|
|
B(LdaFalse),
|
|
B(Star), R(20),
|
|
B(Mov), R(0), R(18),
|
|
B(InvokeIntrinsic), U8(Runtime::k_RejectPromise), R(18), U8(3),
|
|
B(PopContext), R(17),
|
|
B(LdaZero),
|
|
B(Star), R(13),
|
|
B(Mov), R(0), R(14),
|
|
B(Jump), U8(16),
|
|
B(LdaSmi), I8(-1),
|
|
B(Star), R(14),
|
|
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(LdaFalse),
|
|
B(Star), R(17),
|
|
B(Mov), R(0), R(16),
|
|
B(CallJSRuntime), U8(%async_function_promise_release), R(16), U8(2),
|
|
B(Ldar), R(15),
|
|
B(SetPendingMessage),
|
|
B(Ldar), R(13),
|
|
B(SwitchOnSmiNoFeedback), U8(8), U8(2), I8(0),
|
|
B(Jump), U8(8),
|
|
B(Ldar), R(14),
|
|
/* 60 S> */ B(Return),
|
|
B(Ldar), R(14),
|
|
B(ReThrow),
|
|
B(LdaUndefined),
|
|
/* 60 S> */ B(Return),
|
|
]
|
|
constant pool: [
|
|
SYMBOL_TYPE,
|
|
ONE_BYTE_INTERNALIZED_STRING_TYPE ["next"],
|
|
ONE_BYTE_INTERNALIZED_STRING_TYPE ["done"],
|
|
ONE_BYTE_INTERNALIZED_STRING_TYPE ["value"],
|
|
SCOPE_INFO_TYPE,
|
|
ONE_BYTE_INTERNALIZED_STRING_TYPE ["return"],
|
|
ONE_BYTE_INTERNALIZED_STRING_TYPE [""],
|
|
SCOPE_INFO_TYPE,
|
|
Smi [6],
|
|
Smi [9],
|
|
]
|
|
handlers: [
|
|
[10, 316, 324],
|
|
[13, 277, 279],
|
|
[19, 137, 145],
|
|
[22, 100, 102],
|
|
[205, 215, 217],
|
|
]
|
|
|
|
---
|
|
snippet: "
|
|
async function f(arr) {
|
|
for (let x of arr) await x;
|
|
}
|
|
f([1, 2, 3]);
|
|
"
|
|
frame size: 23
|
|
parameter count: 2
|
|
bytecode array length: 414
|
|
bytecodes: [
|
|
B(SwitchOnGeneratorState), R(3), U8(0), U8(1),
|
|
B(Mov), R(closure), R(12),
|
|
B(Mov), R(this), R(13),
|
|
B(InvokeIntrinsic), U8(Runtime::k_CreateJSGeneratorObject), R(12), U8(2),
|
|
B(Star), R(3),
|
|
/* 16 E> */ B(StackCheck),
|
|
B(CallJSRuntime), U8(%async_function_promise_create), R(0), U8(0),
|
|
B(Star), R(0),
|
|
B(Mov), R(context), R(14),
|
|
B(Mov), R(context), R(15),
|
|
B(LdaZero),
|
|
B(Star), R(8),
|
|
B(Mov), R(context), R(18),
|
|
B(Mov), R(context), R(19),
|
|
/* 40 S> */ B(LdaNamedProperty), R(arg0), U8(1), U8(0),
|
|
B(Star), R(21),
|
|
B(CallProperty0), R(21), R(arg0), U8(2),
|
|
B(Mov), R(arg0), R(20),
|
|
B(JumpIfJSReceiver), U8(7),
|
|
B(CallRuntime), U16(Runtime::kThrowSymbolIteratorInvalid), R(0), U8(0),
|
|
B(Star), R(5),
|
|
/* 40 E> */ B(LdaNamedProperty), R(5), U8(2), U8(4),
|
|
B(Star), R(6),
|
|
/* 35 S> */ B(CallProperty0), R(6), R(5), U8(6),
|
|
B(Star), R(7),
|
|
/* 35 E> */ B(InvokeIntrinsic), U8(Runtime::k_IsJSReceiver), R(7), U8(1),
|
|
B(ToBooleanLogicalNot),
|
|
B(JumpIfFalse), U8(7),
|
|
B(CallRuntime), U16(Runtime::kThrowIteratorResultNotAnObject), R(7), U8(1),
|
|
B(LdaNamedProperty), R(7), U8(3), U8(8),
|
|
B(JumpIfToBooleanTrue), U8(63),
|
|
B(LdaNamedProperty), R(7), U8(4), U8(10),
|
|
B(Star), R(9),
|
|
B(LdaSmi), I8(2),
|
|
B(Star), R(8),
|
|
B(Mov), R(9), R(4),
|
|
/* 26 E> */ B(StackCheck),
|
|
B(Mov), R(4), R(1),
|
|
/* 45 S> */ B(Mov), R(3), R(20),
|
|
B(Mov), R(1), R(21),
|
|
B(Mov), R(0), R(22),
|
|
B(CallJSRuntime), U8(%async_function_await_uncaught), R(20), U8(3),
|
|
/* 45 E> */ B(SuspendGenerator), R(3), R(0), U8(20), U8(0),
|
|
B(ResumeGenerator), R(3), R(0), U8(20),
|
|
B(Star), R(20),
|
|
B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(3), U8(1),
|
|
B(Star), R(21),
|
|
B(LdaZero),
|
|
B(TestReferenceEqual), R(21),
|
|
B(JumpIfTrue), U8(5),
|
|
B(Ldar), R(20),
|
|
B(ReThrow),
|
|
B(LdaZero),
|
|
B(Star), R(8),
|
|
B(JumpLoop), U8(82), I8(0),
|
|
B(Jump), U8(37),
|
|
B(Star), R(20),
|
|
B(CreateCatchContext), R(20), U8(5),
|
|
B(Star), R(19),
|
|
B(LdaTheHole),
|
|
B(SetPendingMessage),
|
|
B(Ldar), R(19),
|
|
B(PushContext), R(20),
|
|
B(LdaSmi), I8(2),
|
|
B(TestEqualStrict), R(8), U8(12),
|
|
B(JumpIfFalse), U8(6),
|
|
B(LdaSmi), I8(1),
|
|
B(Star), R(8),
|
|
B(LdaImmutableCurrentContextSlot), U8(4),
|
|
B(Star), R(21),
|
|
B(CallRuntime), U16(Runtime::kReThrow), R(21), U8(1),
|
|
B(PopContext), R(20),
|
|
B(LdaSmi), I8(-1),
|
|
B(Star), R(17),
|
|
B(Star), R(16),
|
|
B(Jump), U8(7),
|
|
B(Star), R(17),
|
|
B(LdaZero),
|
|
B(Star), R(16),
|
|
B(LdaTheHole),
|
|
B(SetPendingMessage),
|
|
B(Star), R(18),
|
|
B(LdaZero),
|
|
B(TestEqualStrict), R(8), U8(13),
|
|
B(JumpIfTrue), U8(90),
|
|
B(LdaNamedProperty), R(5), U8(6), U8(14),
|
|
B(Star), R(10),
|
|
B(TestUndetectable),
|
|
B(JumpIfFalse), U8(4),
|
|
B(Jump), U8(79),
|
|
B(LdaSmi), I8(1),
|
|
B(TestEqualStrict), R(8), U8(16),
|
|
B(JumpIfFalse), U8(47),
|
|
B(Ldar), R(10),
|
|
B(TestTypeOf), U8(6),
|
|
B(JumpIfFalse), U8(4),
|
|
B(Jump), U8(18),
|
|
B(Wide), B(LdaSmi), I16(154),
|
|
B(Star), R(19),
|
|
B(LdaConstant), U8(7),
|
|
B(Star), R(20),
|
|
B(CallRuntime), U16(Runtime::kNewTypeError), R(19), U8(2),
|
|
B(Throw),
|
|
B(Mov), R(context), R(19),
|
|
B(Mov), R(10), R(20),
|
|
B(Mov), R(5), R(21),
|
|
B(InvokeIntrinsic), U8(Runtime::k_Call), R(20), U8(2),
|
|
B(Jump), U8(6),
|
|
B(LdaTheHole),
|
|
B(SetPendingMessage),
|
|
B(Ldar), R(19),
|
|
B(Jump), U8(27),
|
|
B(Mov), R(10), R(19),
|
|
B(Mov), R(5), R(20),
|
|
B(InvokeIntrinsic), U8(Runtime::k_Call), R(19), U8(2),
|
|
B(Star), R(11),
|
|
B(InvokeIntrinsic), U8(Runtime::k_IsJSReceiver), R(11), U8(1),
|
|
B(JumpIfToBooleanFalse), U8(4),
|
|
B(Jump), U8(7),
|
|
B(CallRuntime), U16(Runtime::kThrowIteratorResultNotAnObject), R(11), U8(1),
|
|
B(Ldar), R(18),
|
|
B(SetPendingMessage),
|
|
B(LdaZero),
|
|
B(TestReferenceEqual), R(16),
|
|
B(JumpIfFalse), U8(5),
|
|
B(Ldar), R(17),
|
|
B(ReThrow),
|
|
B(LdaUndefined),
|
|
B(Star), R(17),
|
|
B(Mov), R(0), R(16),
|
|
B(InvokeIntrinsic), U8(Runtime::k_ResolvePromise), R(16), U8(2),
|
|
B(LdaZero),
|
|
B(Star), R(12),
|
|
B(Mov), R(0), R(13),
|
|
B(Jump), U8(55),
|
|
B(Jump), U8(39),
|
|
B(Star), R(16),
|
|
B(CreateCatchContext), R(16), U8(8),
|
|
B(Star), R(15),
|
|
B(LdaTheHole),
|
|
B(SetPendingMessage),
|
|
B(Ldar), R(15),
|
|
B(PushContext), R(16),
|
|
B(LdaImmutableCurrentContextSlot), U8(4),
|
|
B(Star), R(18),
|
|
B(LdaFalse),
|
|
B(Star), R(19),
|
|
B(Mov), R(0), R(17),
|
|
B(InvokeIntrinsic), U8(Runtime::k_RejectPromise), R(17), U8(3),
|
|
B(PopContext), R(16),
|
|
B(LdaZero),
|
|
B(Star), R(12),
|
|
B(Mov), R(0), R(13),
|
|
B(Jump), U8(16),
|
|
B(LdaSmi), I8(-1),
|
|
B(Star), R(13),
|
|
B(Star), R(12),
|
|
B(Jump), U8(8),
|
|
B(Star), R(13),
|
|
B(LdaSmi), I8(1),
|
|
B(Star), R(12),
|
|
B(LdaTheHole),
|
|
B(SetPendingMessage),
|
|
B(Star), R(14),
|
|
B(LdaTrue),
|
|
B(Star), R(16),
|
|
B(Mov), R(0), R(15),
|
|
B(CallJSRuntime), U8(%async_function_promise_release), R(15), U8(2),
|
|
B(Ldar), R(14),
|
|
B(SetPendingMessage),
|
|
B(Ldar), R(12),
|
|
B(SwitchOnSmiNoFeedback), U8(9), U8(2), I8(0),
|
|
B(Jump), U8(8),
|
|
B(Ldar), R(13),
|
|
/* 54 S> */ B(Return),
|
|
B(Ldar), R(13),
|
|
B(ReThrow),
|
|
B(LdaUndefined),
|
|
/* 54 S> */ B(Return),
|
|
]
|
|
constant pool: [
|
|
Smi [125],
|
|
SYMBOL_TYPE,
|
|
ONE_BYTE_INTERNALIZED_STRING_TYPE ["next"],
|
|
ONE_BYTE_INTERNALIZED_STRING_TYPE ["done"],
|
|
ONE_BYTE_INTERNALIZED_STRING_TYPE ["value"],
|
|
SCOPE_INFO_TYPE,
|
|
ONE_BYTE_INTERNALIZED_STRING_TYPE ["return"],
|
|
ONE_BYTE_INTERNALIZED_STRING_TYPE [""],
|
|
SCOPE_INFO_TYPE,
|
|
Smi [6],
|
|
Smi [9],
|
|
]
|
|
handlers: [
|
|
[26, 367, 375],
|
|
[29, 328, 330],
|
|
[35, 188, 196],
|
|
[38, 151, 153],
|
|
[256, 266, 268],
|
|
]
|
|
|