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v8/test/cctest/interpreter/bytecode_expectations/ForOfLoop.golden
Swapnil Gaikwad 91e3243d60 Extend GetIterator bytecode to perform JSReceiver check on object[Symbol.iterator]() 
Current GetIterator bytecode loads and calls @@iterator property on a
given object. This change extends the bytecode functionality to check
whether the value returned after calling @@iterator property is a valid
JSReceiver. The bytecode throws SymbolIteratorInvalid exception if the
returned value is not a valid JSReceiver. This change absorbs the
functionality of additional two bytecodes - JumpIfJSReceiver and
CallRuntime, that are part of the iterator protocol in the GetIterator
bytecode.

Bug: v8:9489
Change-Id: I9e84cfe85eeb9a1b8a97ca0595375ac26ba1bbfd
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1792905
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Commit-Queue: Swapnil Gaikwad <swapnilgaikwad@google.com>
Cr-Commit-Position: refs/heads/master@{#63704}
2019-09-12 08:51:35 +00:00

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#
# Autogenerated by generate-bytecode-expectations.
#
---
wrap: no
test function name: f
---
snippet: "
function f(arr) {
for (let x of arr) { let y = x; }
}
f([1, 2, 3]);
"
frame size: 15
parameter count: 2
bytecode array length: 155
bytecodes: [
/* 10 E> */ B(StackCheck),
/* 34 S> */ B(GetIterator), R(arg0), U8(0), U8(2),
B(Star), R(5),
B(LdaNamedProperty), R(5), U8(0), U8(4),
B(Star), R(4),
B(LdaFalse),
B(Star), R(6),
B(Mov), R(context), R(9),
B(LdaTrue),
B(Star), R(6),
/* 29 S> */ B(CallProperty0), R(4), R(5), U8(6),
B(Star), R(10),
B(JumpIfJSReceiver), U8(7),
B(CallRuntime), U16(Runtime::kThrowIteratorResultNotAnObject), R(10), U8(1),
B(LdaNamedProperty), R(10), U8(1), U8(8),
B(JumpIfToBooleanTrue), U8(26),
B(LdaNamedProperty), R(10), U8(2), U8(10),
B(Star), R(10),
B(LdaFalse),
B(Star), R(6),
B(Mov), R(10), R(0),
/* 20 E> */ B(StackCheck),
/* 29 S> */ B(Mov), R(0), R(2),
/* 49 S> */ B(Mov), R(2), R(3),
B(Ldar), R(10),
B(JumpLoop), U8(43), I8(0),
B(LdaSmi), I8(-1),
B(Star), R(8),
B(Star), R(7),
B(Jump), U8(7),
B(Star), R(8),
B(LdaZero),
B(Star), R(7),
B(LdaTheHole),
/* 49 E> */ B(SetPendingMessage),
B(Star), R(9),
B(Ldar), R(6),
B(JumpIfToBooleanTrue), U8(58),
B(LdaNamedProperty), R(5), U8(3), U8(12),
B(Star), R(11),
B(JumpIfUndefinedOrNull), U8(50),
B(Mov), R(context), R(12),
B(TestTypeOf), U8(6),
B(JumpIfTrue), U8(18),
B(Wide), B(LdaSmi), I16(159),
B(Star), R(13),
B(LdaConstant), U8(4),
B(Star), R(14),
B(CallRuntime), U16(Runtime::kNewTypeError), R(13), U8(2),
B(Throw),
B(CallProperty0), R(11), R(5), U8(14),
B(JumpIfJSReceiver), U8(21),
B(Star), R(13),
B(CallRuntime), U16(Runtime::kThrowIteratorResultNotAnObject), R(13), U8(1),
B(Jump), U8(12),
B(Star), R(12),
B(LdaZero),
B(TestReferenceEqual), R(7),
B(JumpIfTrue), U8(5),
B(Ldar), R(12),
B(ReThrow),
B(Ldar), R(9),
B(SetPendingMessage),
B(LdaZero),
B(TestReferenceEqual), R(7),
B(JumpIfFalse), U8(5),
B(Ldar), R(8),
B(ReThrow),
B(LdaUndefined),
/* 54 S> */ B(Return),
]
constant pool: [
ONE_BYTE_INTERNALIZED_STRING_TYPE ["next"],
ONE_BYTE_INTERNALIZED_STRING_TYPE ["done"],
ONE_BYTE_INTERNALIZED_STRING_TYPE ["value"],
ONE_BYTE_INTERNALIZED_STRING_TYPE ["return"],
ONE_BYTE_INTERNALIZED_STRING_TYPE [""],
]
handlers: [
[19, 65, 73],
[97, 130, 132],
]
---
snippet: "
function f(arr) {
for (let x of arr) { eval('1'); }
}
f([1, 2, 3]);
"
frame size: 20
parameter count: 2
bytecode array length: 239
bytecodes: [
B(CreateFunctionContext), U8(0), U8(4),
B(PushContext), R(2),
B(Ldar), R(this),
B(StaCurrentContextSlot), U8(5),
B(Ldar), R(arg0),
B(StaCurrentContextSlot), U8(4),
B(CreateMappedArguments),
B(StaCurrentContextSlot), U8(7),
B(Ldar), R(1),
B(StaCurrentContextSlot), U8(6),
/* 10 E> */ B(StackCheck),
B(CreateBlockContext), U8(1),
B(PushContext), R(3),
B(LdaTheHole),
B(StaCurrentContextSlot), U8(4),
/* 34 S> */ B(LdaContextSlot), R(3), U8(4), U8(0),
B(Star), R(6),
B(GetIterator), R(6), U8(0), U8(2),
B(Star), R(5),
B(LdaNamedProperty), R(5), U8(2), U8(4),
B(Star), R(4),
B(LdaFalse),
B(Star), R(6),
B(Mov), R(context), R(9),
B(LdaTrue),
B(Star), R(6),
/* 29 S> */ B(CallProperty0), R(4), R(5), U8(6),
B(Star), R(10),
B(JumpIfJSReceiver), U8(7),
B(CallRuntime), U16(Runtime::kThrowIteratorResultNotAnObject), R(10), U8(1),
B(LdaNamedProperty), R(10), U8(3), U8(8),
B(JumpIfToBooleanTrue), U8(75),
B(LdaNamedProperty), R(10), U8(4), U8(10),
B(Star), R(10),
B(LdaFalse),
B(Star), R(6),
B(Mov), R(10), R(0),
/* 20 E> */ B(StackCheck),
B(CreateBlockContext), U8(5),
B(PushContext), R(11),
B(LdaTheHole),
B(StaCurrentContextSlot), U8(4),
/* 29 S> */ B(Ldar), R(0),
/* 29 E> */ B(StaCurrentContextSlot), U8(4),
/* 41 S> */ B(LdaLookupGlobalSlot), U8(6), U8(12), U8(3),
B(Star), R(12),
B(LdaConstant), U8(7),
B(Star), R(13),
B(LdaZero),
B(Star), R(17),
B(LdaSmi), I8(37),
B(Star), R(18),
B(LdaSmi), I8(41),
B(Star), R(19),
B(Mov), R(12), R(14),
B(Mov), R(13), R(15),
B(Mov), R(closure), R(16),
B(CallRuntime), U16(Runtime::kResolvePossiblyDirectEval), R(14), U8(6),
B(Star), R(12),
/* 41 E> */ B(CallUndefinedReceiver1), R(12), R(13), U8(14),
B(PopContext), R(11),
B(Mov), R(0), R(10),
B(JumpLoop), U8(92), I8(0),
B(LdaSmi), I8(-1),
B(Star), R(8),
B(Star), R(7),
B(Jump), U8(7),
B(Star), R(8),
B(LdaZero),
B(Star), R(7),
B(LdaTheHole),
B(SetPendingMessage),
B(Star), R(9),
B(Ldar), R(6),
B(JumpIfToBooleanTrue), U8(58),
B(LdaNamedProperty), R(5), U8(8), U8(16),
B(Star), R(12),
B(JumpIfUndefinedOrNull), U8(50),
B(Mov), R(context), R(13),
B(TestTypeOf), U8(6),
B(JumpIfTrue), U8(18),
B(Wide), B(LdaSmi), I16(159),
B(Star), R(14),
B(LdaConstant), U8(9),
B(Star), R(15),
B(CallRuntime), U16(Runtime::kNewTypeError), R(14), U8(2),
B(Throw),
B(CallProperty0), R(12), R(5), U8(18),
B(JumpIfJSReceiver), U8(21),
B(Star), R(14),
B(CallRuntime), U16(Runtime::kThrowIteratorResultNotAnObject), R(14), U8(1),
B(Jump), U8(12),
B(Star), R(13),
B(LdaZero),
B(TestReferenceEqual), R(7),
B(JumpIfTrue), U8(5),
B(Ldar), R(13),
B(ReThrow),
B(Ldar), R(9),
B(SetPendingMessage),
B(LdaZero),
B(TestReferenceEqual), R(7),
B(JumpIfFalse), U8(5),
B(Ldar), R(8),
B(ReThrow),
B(PopContext), R(3),
B(LdaUndefined),
/* 54 S> */ B(Return),
]
constant pool: [
SCOPE_INFO_TYPE,
SCOPE_INFO_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"],
ONE_BYTE_INTERNALIZED_STRING_TYPE ["return"],
ONE_BYTE_INTERNALIZED_STRING_TYPE [""],
]
handlers: [
[52, 147, 155],
[179, 212, 214],
]
---
snippet: "
function f(arr) {
for (let x of arr) { (function() { return x; })(); }
}
f([1, 2, 3]);
"
frame size: 14
parameter count: 2
bytecode array length: 172
bytecodes: [
/* 10 E> */ B(StackCheck),
/* 34 S> */ B(GetIterator), R(arg0), U8(0), U8(2),
B(Star), R(3),
B(LdaNamedProperty), R(3), U8(0), U8(4),
B(Star), R(2),
B(LdaFalse),
B(Star), R(4),
B(Mov), R(context), R(7),
B(LdaTrue),
B(Star), R(4),
/* 29 S> */ B(CallProperty0), R(2), R(3), U8(6),
B(Star), R(8),
B(JumpIfJSReceiver), U8(7),
B(CallRuntime), U16(Runtime::kThrowIteratorResultNotAnObject), R(8), U8(1),
B(LdaNamedProperty), R(8), U8(1), U8(8),
B(JumpIfToBooleanTrue), U8(43),
B(LdaNamedProperty), R(8), U8(2), U8(10),
B(Star), R(8),
B(LdaFalse),
B(Star), R(4),
B(Mov), R(8), R(0),
/* 20 E> */ B(StackCheck),
B(CreateBlockContext), U8(3),
B(PushContext), R(9),
B(LdaTheHole),
B(StaCurrentContextSlot), U8(4),
/* 29 S> */ B(Ldar), R(0),
/* 29 E> */ B(StaCurrentContextSlot), U8(4),
/* 41 S> */ B(CreateClosure), U8(4), U8(0), U8(2),
B(Star), R(10),
/* 67 E> */ B(CallUndefinedReceiver0), R(10), U8(12),
B(PopContext), R(9),
B(Mov), R(0), R(8),
B(JumpLoop), U8(60), I8(0),
B(LdaSmi), I8(-1),
B(Star), R(6),
B(Star), R(5),
B(Jump), U8(7),
B(Star), R(6),
B(LdaZero),
B(Star), R(5),
B(LdaTheHole),
B(SetPendingMessage),
B(Star), R(7),
B(Ldar), R(4),
B(JumpIfToBooleanTrue), U8(58),
B(LdaNamedProperty), R(3), U8(5), U8(14),
B(Star), R(10),
B(JumpIfUndefinedOrNull), U8(50),
B(Mov), R(context), R(11),
B(TestTypeOf), U8(6),
B(JumpIfTrue), U8(18),
B(Wide), B(LdaSmi), I16(159),
B(Star), R(12),
B(LdaConstant), U8(6),
B(Star), R(13),
B(CallRuntime), U16(Runtime::kNewTypeError), R(12), U8(2),
B(Throw),
B(CallProperty0), R(10), R(3), U8(16),
B(JumpIfJSReceiver), U8(21),
B(Star), R(12),
B(CallRuntime), U16(Runtime::kThrowIteratorResultNotAnObject), R(12), U8(1),
B(Jump), U8(12),
B(Star), R(11),
B(LdaZero),
B(TestReferenceEqual), R(5),
B(JumpIfTrue), U8(5),
B(Ldar), R(11),
B(ReThrow),
B(Ldar), R(7),
B(SetPendingMessage),
B(LdaZero),
B(TestReferenceEqual), R(5),
B(JumpIfFalse), U8(5),
B(Ldar), R(6),
B(ReThrow),
B(LdaUndefined),
/* 73 S> */ B(Return),
]
constant pool: [
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,
ONE_BYTE_INTERNALIZED_STRING_TYPE ["return"],
ONE_BYTE_INTERNALIZED_STRING_TYPE [""],
]
handlers: [
[19, 82, 90],
[114, 147, 149],
]
---
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: 17
parameter count: 2
bytecode array length: 166
bytecodes: [
/* 10 E> */ B(StackCheck),
/* 41 S> */ B(GetIterator), R(arg0), U8(0), U8(2),
B(Star), R(7),
B(LdaNamedProperty), R(7), U8(0), U8(4),
B(Star), R(6),
B(LdaFalse),
B(Star), R(8),
B(Mov), R(context), R(11),
B(LdaTrue),
B(Star), R(8),
/* 36 S> */ B(CallProperty0), R(6), R(7), U8(6),
B(Star), R(12),
B(JumpIfJSReceiver), U8(7),
B(CallRuntime), U16(Runtime::kThrowIteratorResultNotAnObject), R(12), U8(1),
B(LdaNamedProperty), R(12), U8(1), U8(8),
B(JumpIfToBooleanTrue), U8(37),
B(LdaNamedProperty), R(12), U8(2), U8(10),
B(Star), R(12),
B(LdaFalse),
B(Star), R(8),
B(Mov), R(12), R(0),
/* 20 E> */ B(StackCheck),
/* 31 S> */ B(LdaNamedProperty), R(0), U8(3), U8(12),
B(Star), R(3),
/* 34 S> */ B(LdaNamedProperty), R(0), U8(4), U8(14),
B(Star), R(4),
/* 56 S> */ B(Ldar), R(4),
/* 58 E> */ B(Add), R(3), U8(16),
B(Star), R(5),
B(JumpLoop), U8(54), I8(0),
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),
/* 56 E> */ B(SetPendingMessage),
B(Star), R(11),
B(Ldar), R(8),
B(JumpIfToBooleanTrue), U8(58),
B(LdaNamedProperty), R(7), U8(5), U8(17),
B(Star), R(13),
B(JumpIfUndefinedOrNull), U8(50),
B(Mov), R(context), R(14),
B(TestTypeOf), U8(6),
B(JumpIfTrue), U8(18),
B(Wide), B(LdaSmi), I16(159),
B(Star), R(15),
B(LdaConstant), U8(6),
B(Star), R(16),
B(CallRuntime), U16(Runtime::kNewTypeError), R(15), U8(2),
B(Throw),
B(CallProperty0), R(13), R(7), U8(19),
B(JumpIfJSReceiver), U8(21),
B(Star), R(15),
B(CallRuntime), U16(Runtime::kThrowIteratorResultNotAnObject), R(15), U8(1),
B(Jump), U8(12),
B(Star), R(14),
B(LdaZero),
B(TestReferenceEqual), R(9),
B(JumpIfTrue), U8(5),
B(Ldar), R(14),
B(ReThrow),
B(Ldar), R(11),
B(SetPendingMessage),
B(LdaZero),
B(TestReferenceEqual), R(9),
B(JumpIfFalse), U8(5),
B(Ldar), R(10),
B(ReThrow),
B(LdaUndefined),
/* 65 S> */ B(Return),
]
constant pool: [
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"],
ONE_BYTE_INTERNALIZED_STRING_TYPE ["return"],
ONE_BYTE_INTERNALIZED_STRING_TYPE [""],
]
handlers: [
[19, 76, 84],
[108, 141, 143],
]
---
snippet: "
function* f(arr) {
for (let x of arr) { let y = x; }
}
f([1, 2, 3]);
"
frame size: 16
parameter count: 2
bytecode array length: 196
bytecodes: [
B(SwitchOnGeneratorState), R(0), U8(0), U8(1),
B(Mov), R(closure), R(5),
B(Mov), R(this), R(6),
B(InvokeIntrinsic), U8(Runtime::k_CreateJSGeneratorObject), R(5), U8(2),
B(Star), R(0),
/* 11 E> */ B(StackCheck),
/* 11 E> */ B(SuspendGenerator), R(0), R(0), U8(5), U8(0),
B(ResumeGenerator), R(0), R(0), U8(5),
B(Star), R(5),
B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(0), U8(1),
B(SwitchOnSmiNoFeedback), U8(1), U8(2), I8(0),
B(Ldar), R(5),
/* 11 E> */ B(Throw),
B(Ldar), R(5),
/* 55 S> */ B(Return),
/* 35 S> */ B(GetIterator), R(arg0), U8(0), U8(2),
B(Star), R(6),
B(LdaNamedProperty), R(6), U8(3), U8(4),
B(Star), R(5),
B(LdaFalse),
B(Star), R(7),
B(Mov), R(context), R(10),
B(LdaTrue),
B(Star), R(7),
/* 30 S> */ B(CallProperty0), R(5), R(6), U8(6),
B(Star), R(11),
B(JumpIfJSReceiver), U8(7),
B(CallRuntime), U16(Runtime::kThrowIteratorResultNotAnObject), R(11), U8(1),
B(LdaNamedProperty), R(11), U8(4), U8(8),
B(JumpIfToBooleanTrue), U8(26),
B(LdaNamedProperty), R(11), U8(5), U8(10),
B(Star), R(11),
B(LdaFalse),
B(Star), R(7),
B(Mov), R(11), R(1),
/* 21 E> */ B(StackCheck),
/* 30 S> */ B(Mov), R(1), R(3),
/* 50 S> */ B(Mov), R(3), R(4),
B(Ldar), R(11),
B(JumpLoop), U8(43), I8(0),
B(LdaSmi), I8(-1),
B(Star), R(9),
B(Star), R(8),
B(Jump), U8(7),
B(Star), R(9),
B(LdaZero),
B(Star), R(8),
B(LdaTheHole),
/* 50 E> */ B(SetPendingMessage),
B(Star), R(10),
B(Ldar), R(7),
B(JumpIfToBooleanTrue), U8(58),
B(LdaNamedProperty), R(6), U8(6), U8(12),
B(Star), R(12),
B(JumpIfUndefinedOrNull), U8(50),
B(Mov), R(context), R(13),
B(TestTypeOf), U8(6),
B(JumpIfTrue), U8(18),
B(Wide), B(LdaSmi), I16(159),
B(Star), R(14),
B(LdaConstant), U8(7),
B(Star), R(15),
B(CallRuntime), U16(Runtime::kNewTypeError), R(14), U8(2),
B(Throw),
B(CallProperty0), R(12), R(6), U8(14),
B(JumpIfJSReceiver), U8(21),
B(Star), R(14),
B(CallRuntime), U16(Runtime::kThrowIteratorResultNotAnObject), R(14), U8(1),
B(Jump), U8(12),
B(Star), R(13),
B(LdaZero),
B(TestReferenceEqual), R(8),
B(JumpIfTrue), U8(5),
B(Ldar), R(13),
B(ReThrow),
B(Ldar), R(10),
B(SetPendingMessage),
B(LdaZero),
B(TestReferenceEqual), R(8),
B(JumpIfFalse), U8(5),
B(Ldar), R(9),
B(ReThrow),
B(LdaUndefined),
/* 55 S> */ B(Return),
]
constant pool: [
Smi [22],
Smi [10],
Smi [7],
ONE_BYTE_INTERNALIZED_STRING_TYPE ["next"],
ONE_BYTE_INTERNALIZED_STRING_TYPE ["done"],
ONE_BYTE_INTERNALIZED_STRING_TYPE ["value"],
ONE_BYTE_INTERNALIZED_STRING_TYPE ["return"],
ONE_BYTE_INTERNALIZED_STRING_TYPE [""],
]
handlers: [
[60, 106, 114],
[138, 171, 173],
]
---
snippet: "
function* f(arr) {
for (let x of arr) yield x;
}
f([1, 2, 3]);
"
frame size: 15
parameter count: 2
bytecode array length: 240
bytecodes: [
B(SwitchOnGeneratorState), R(0), U8(0), U8(2),
B(Mov), R(closure), R(4),
B(Mov), R(this), R(5),
B(InvokeIntrinsic), U8(Runtime::k_CreateJSGeneratorObject), R(4), U8(2),
B(Star), R(0),
/* 11 E> */ B(StackCheck),
/* 11 E> */ B(SuspendGenerator), R(0), R(0), U8(4), U8(0),
B(ResumeGenerator), R(0), R(0), U8(4),
B(Star), R(4),
B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(0), U8(1),
B(SwitchOnSmiNoFeedback), U8(2), U8(2), I8(0),
B(Ldar), R(4),
/* 11 E> */ B(Throw),
B(Ldar), R(4),
/* 49 S> */ B(Return),
/* 35 S> */ B(GetIterator), R(arg0), U8(0), U8(2),
B(Star), R(5),
B(LdaNamedProperty), R(5), U8(4), U8(4),
B(Star), R(4),
B(LdaFalse),
B(Star), R(6),
B(Mov), R(context), R(9),
B(LdaTrue),
B(Star), R(6),
/* 30 S> */ B(CallProperty0), R(4), R(5), U8(6),
B(Star), R(10),
B(JumpIfJSReceiver), U8(7),
B(CallRuntime), U16(Runtime::kThrowIteratorResultNotAnObject), R(10), U8(1),
B(LdaNamedProperty), R(10), U8(5), U8(8),
B(JumpIfToBooleanTrue), U8(64),
B(LdaNamedProperty), R(10), U8(6), U8(10),
B(Star), R(10),
B(LdaFalse),
B(Star), R(6),
B(Mov), R(10), R(1),
/* 21 E> */ B(StackCheck),
/* 30 S> */ B(Mov), R(1), R(3),
/* 40 S> */ B(LdaFalse),
B(Star), R(12),
B(Mov), R(3), R(11),
B(InvokeIntrinsic), U8(Runtime::k_CreateIterResultObject), R(11), U8(2),
/* 40 E> */ B(SuspendGenerator), R(0), R(0), U8(11), U8(1),
B(ResumeGenerator), R(0), R(0), U8(11),
B(Star), R(11),
B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(0), U8(1),
B(SwitchOnSmiNoFeedback), U8(7), U8(2), I8(0),
B(Ldar), R(11),
/* 40 E> */ B(Throw),
B(LdaSmi), I8(1),
B(Star), R(7),
B(Mov), R(11), R(8),
B(Jump), U8(20),
B(Ldar), R(11),
B(JumpLoop), U8(81), I8(0),
B(LdaSmi), I8(-1),
B(Star), R(8),
B(Star), R(7),
B(Jump), U8(7),
B(Star), R(8),
B(LdaZero),
B(Star), R(7),
B(LdaTheHole),
B(SetPendingMessage),
B(Star), R(9),
B(Ldar), R(6),
B(JumpIfToBooleanTrue), U8(58),
B(LdaNamedProperty), R(5), U8(9), U8(12),
B(Star), R(11),
B(JumpIfUndefinedOrNull), U8(50),
B(Mov), R(context), R(12),
B(TestTypeOf), U8(6),
B(JumpIfTrue), U8(18),
B(Wide), B(LdaSmi), I16(159),
B(Star), R(13),
B(LdaConstant), U8(10),
B(Star), R(14),
B(CallRuntime), U16(Runtime::kNewTypeError), R(13), U8(2),
B(Throw),
B(CallProperty0), R(11), R(5), U8(14),
B(JumpIfJSReceiver), U8(21),
B(Star), R(13),
B(CallRuntime), U16(Runtime::kThrowIteratorResultNotAnObject), R(13), U8(1),
B(Jump), U8(12),
B(Star), R(12),
B(LdaZero),
B(TestReferenceEqual), R(7),
B(JumpIfTrue), U8(5),
B(Ldar), R(12),
B(ReThrow),
B(Ldar), R(9),
B(SetPendingMessage),
B(Ldar), R(7),
B(SwitchOnSmiNoFeedback), U8(11), U8(2), I8(0),
B(Jump), U8(8),
B(Ldar), R(8),
B(ReThrow),
B(Ldar), R(8),
/* 49 S> */ B(Return),
B(LdaUndefined),
/* 49 S> */ B(Return),
]
constant pool: [
Smi [22],
Smi [113],
Smi [10],
Smi [7],
ONE_BYTE_INTERNALIZED_STRING_TYPE ["next"],
ONE_BYTE_INTERNALIZED_STRING_TYPE ["done"],
ONE_BYTE_INTERNALIZED_STRING_TYPE ["value"],
Smi [16],
Smi [7],
ONE_BYTE_INTERNALIZED_STRING_TYPE ["return"],
ONE_BYTE_INTERNALIZED_STRING_TYPE [""],
Smi [6],
Smi [9],
]
handlers: [
[60, 144, 152],
[176, 209, 211],
]
---
snippet: "
async function f(arr) {
for (let x of arr) { let y = x; }
}
f([1, 2, 3]);
"
frame size: 17
parameter count: 2
bytecode array length: 210
bytecodes: [
B(Mov), R(closure), R(5),
B(Mov), R(this), R(6),
B(InvokeIntrinsic), U8(Runtime::k_AsyncFunctionEnter), R(5), U8(2),
B(Star), R(0),
/* 16 E> */ B(StackCheck),
B(Mov), R(context), R(5),
/* 40 S> */ B(GetIterator), R(arg0), U8(0), U8(2),
B(Star), R(7),
B(LdaNamedProperty), R(7), U8(0), U8(4),
B(Star), R(6),
B(LdaFalse),
B(Star), R(8),
B(Mov), R(context), R(11),
B(LdaTrue),
B(Star), R(8),
/* 35 S> */ B(CallProperty0), R(6), R(7), U8(6),
B(Star), R(12),
B(JumpIfJSReceiver), U8(7),
B(CallRuntime), U16(Runtime::kThrowIteratorResultNotAnObject), R(12), U8(1),
B(LdaNamedProperty), R(12), U8(1), U8(8),
B(JumpIfToBooleanTrue), U8(26),
B(LdaNamedProperty), R(12), U8(2), U8(10),
B(Star), R(12),
B(LdaFalse),
B(Star), R(8),
B(Mov), R(12), R(1),
/* 26 E> */ B(StackCheck),
/* 35 S> */ B(Mov), R(1), R(3),
/* 55 S> */ B(Mov), R(3), R(4),
B(Ldar), R(12),
B(JumpLoop), U8(43), I8(0),
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),
/* 55 E> */ B(SetPendingMessage),
B(Star), R(11),
B(Ldar), R(8),
B(JumpIfToBooleanTrue), U8(58),
B(LdaNamedProperty), R(7), U8(3), U8(12),
B(Star), R(13),
B(JumpIfUndefinedOrNull), U8(50),
B(Mov), R(context), R(14),
B(TestTypeOf), U8(6),
B(JumpIfTrue), U8(18),
B(Wide), B(LdaSmi), I16(159),
B(Star), R(15),
B(LdaConstant), U8(4),
B(Star), R(16),
B(CallRuntime), U16(Runtime::kNewTypeError), R(15), U8(2),
B(Throw),
B(CallProperty0), R(13), R(7), U8(14),
B(JumpIfJSReceiver), U8(21),
B(Star), R(15),
B(CallRuntime), U16(Runtime::kThrowIteratorResultNotAnObject), R(15), U8(1),
B(Jump), U8(12),
B(Star), R(14),
B(LdaZero),
B(TestReferenceEqual), R(9),
B(JumpIfTrue), U8(5),
B(Ldar), R(14),
B(ReThrow),
B(Ldar), R(11),
B(SetPendingMessage),
B(LdaZero),
B(TestReferenceEqual), R(9),
B(JumpIfFalse), U8(5),
B(Ldar), R(10),
B(ReThrow),
B(LdaUndefined),
B(Star), R(7),
B(LdaFalse),
B(Star), R(8),
B(Mov), R(0), R(6),
B(InvokeIntrinsic), U8(Runtime::k_AsyncFunctionResolve), R(6), U8(3),
/* 60 S> */ B(Return),
B(Star), R(6),
B(CreateCatchContext), R(6), U8(5),
B(Star), R(5),
B(LdaTheHole),
B(SetPendingMessage),
B(Ldar), R(5),
B(PushContext), R(6),
B(LdaImmutableCurrentContextSlot), U8(4),
B(Star), R(8),
B(LdaFalse),
B(Star), R(9),
B(Mov), R(0), R(7),
B(InvokeIntrinsic), U8(Runtime::k_AsyncFunctionReject), R(7), U8(3),
/* 60 S> */ B(Return),
]
constant pool: [
ONE_BYTE_INTERNALIZED_STRING_TYPE ["next"],
ONE_BYTE_INTERNALIZED_STRING_TYPE ["done"],
ONE_BYTE_INTERNALIZED_STRING_TYPE ["value"],
ONE_BYTE_INTERNALIZED_STRING_TYPE ["return"],
ONE_BYTE_INTERNALIZED_STRING_TYPE [""],
SCOPE_INFO_TYPE,
]
handlers: [
[16, 182, 182],
[34, 80, 88],
[112, 145, 147],
]
---
snippet: "
async function f(arr) {
for (let x of arr) await x;
}
f([1, 2, 3]);
"
frame size: 16
parameter count: 2
bytecode array length: 246
bytecodes: [
B(SwitchOnGeneratorState), R(0), U8(0), U8(1),
B(Mov), R(closure), R(4),
B(Mov), R(this), R(5),
B(InvokeIntrinsic), U8(Runtime::k_AsyncFunctionEnter), R(4), U8(2),
B(Star), R(0),
/* 16 E> */ B(StackCheck),
B(Mov), R(context), R(4),
/* 40 S> */ B(GetIterator), R(arg0), U8(0), U8(2),
B(Star), R(6),
B(LdaNamedProperty), R(6), U8(1), U8(4),
B(Star), R(5),
B(LdaFalse),
B(Star), R(7),
B(Mov), R(context), R(10),
B(LdaTrue),
B(Star), R(7),
/* 35 S> */ B(CallProperty0), R(5), R(6), U8(6),
B(Star), R(11),
B(JumpIfJSReceiver), U8(7),
B(CallRuntime), U16(Runtime::kThrowIteratorResultNotAnObject), R(11), U8(1),
B(LdaNamedProperty), R(11), U8(2), U8(8),
B(JumpIfToBooleanTrue), U8(58),
B(LdaNamedProperty), R(11), U8(3), U8(10),
B(Star), R(11),
B(LdaFalse),
B(Star), R(7),
B(Mov), R(11), R(1),
/* 26 E> */ B(StackCheck),
/* 35 S> */ B(Mov), R(1), R(3),
/* 45 S> */ B(Mov), R(0), R(12),
B(Mov), R(3), R(13),
B(InvokeIntrinsic), U8(Runtime::k_AsyncFunctionAwaitUncaught), R(12), U8(2),
/* 45 E> */ B(SuspendGenerator), R(0), R(0), U8(12), U8(0),
B(ResumeGenerator), R(0), R(0), U8(12),
B(Star), R(12),
B(InvokeIntrinsic), U8(Runtime::k_GeneratorGetResumeMode), R(0), U8(1),
B(Star), R(13),
B(LdaZero),
B(TestReferenceEqual), R(13),
B(JumpIfTrue), U8(5),
B(Ldar), R(12),
B(ReThrow),
B(Ldar), R(12),
B(JumpLoop), U8(75), I8(0),
B(LdaSmi), I8(-1),
B(Star), R(9),
B(Star), R(8),
B(Jump), U8(7),
B(Star), R(9),
B(LdaZero),
B(Star), R(8),
B(LdaTheHole),
B(SetPendingMessage),
B(Star), R(10),
B(Ldar), R(7),
B(JumpIfToBooleanTrue), U8(58),
B(LdaNamedProperty), R(6), U8(4), U8(12),
B(Star), R(12),
B(JumpIfUndefinedOrNull), U8(50),
B(Mov), R(context), R(13),
B(TestTypeOf), U8(6),
B(JumpIfTrue), U8(18),
B(Wide), B(LdaSmi), I16(159),
B(Star), R(14),
B(LdaConstant), U8(5),
B(Star), R(15),
B(CallRuntime), U16(Runtime::kNewTypeError), R(14), U8(2),
B(Throw),
B(CallProperty0), R(12), R(6), U8(14),
B(JumpIfJSReceiver), U8(21),
B(Star), R(14),
B(CallRuntime), U16(Runtime::kThrowIteratorResultNotAnObject), R(14), U8(1),
B(Jump), U8(12),
B(Star), R(13),
B(LdaZero),
B(TestReferenceEqual), R(8),
B(JumpIfTrue), U8(5),
B(Ldar), R(13),
B(ReThrow),
B(Ldar), R(10),
B(SetPendingMessage),
B(LdaZero),
B(TestReferenceEqual), R(8),
B(JumpIfFalse), U8(5),
B(Ldar), R(9),
B(ReThrow),
B(LdaUndefined),
B(Star), R(6),
B(LdaTrue),
B(Star), R(7),
B(Mov), R(0), R(5),
B(InvokeIntrinsic), U8(Runtime::k_AsyncFunctionResolve), R(5), U8(3),
/* 54 S> */ B(Return),
B(Star), R(5),
B(CreateCatchContext), R(5), U8(6),
B(Star), R(4),
B(LdaTheHole),
B(SetPendingMessage),
B(Ldar), R(4),
B(PushContext), R(5),
B(LdaImmutableCurrentContextSlot), U8(4),
B(Star), R(7),
B(LdaTrue),
B(Star), R(8),
B(Mov), R(0), R(6),
B(InvokeIntrinsic), U8(Runtime::k_AsyncFunctionReject), R(6), U8(3),
/* 54 S> */ B(Return),
]
constant pool: [
Smi [91],
ONE_BYTE_INTERNALIZED_STRING_TYPE ["next"],
ONE_BYTE_INTERNALIZED_STRING_TYPE ["done"],
ONE_BYTE_INTERNALIZED_STRING_TYPE ["value"],
ONE_BYTE_INTERNALIZED_STRING_TYPE ["return"],
ONE_BYTE_INTERNALIZED_STRING_TYPE [""],
SCOPE_INFO_TYPE,
]
handlers: [
[20, 218, 218],
[38, 116, 124],
[148, 181, 183],
]
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