diff options
Diffstat (limited to 'deps/v8/src/builtins/array-reduce.tq')
| -rw-r--r-- | deps/v8/src/builtins/array-reduce.tq | 323 |
1 files changed, 160 insertions, 163 deletions
diff --git a/deps/v8/src/builtins/array-reduce.tq b/deps/v8/src/builtins/array-reduce.tq index 4a03776bd4e..8ab85a0cb61 100644 --- a/deps/v8/src/builtins/array-reduce.tq +++ b/deps/v8/src/builtins/array-reduce.tq @@ -3,197 +3,194 @@ // found in the LICENSE file. namespace array { - transitioning javascript builtin - ArrayReducePreLoopEagerDeoptContinuation( - js-implicit context: NativeContext, - receiver: JSAny)(callback: JSAny, length: JSAny): JSAny { - // All continuation points in the optimized every implementation are - // after the ToObject(O) call that ensures we are dealing with a - // JSReceiver. - // - // Also, this great mass of casts is necessary because the signature - // of Torque javascript builtins requires JSAny type for all parameters - // other than {context}. - const jsreceiver = Cast<JSReceiver>(receiver) otherwise unreachable; - const callbackfn = Cast<Callable>(callback) otherwise unreachable; - const numberLength = Cast<Number>(length) otherwise unreachable; - - // Simulate starting the loop at 0, but ensuring that the accumulator is - // the hole. The continuation stub will search for the initial non-hole - // element, rightly throwing an exception if not found. - return ArrayReduceLoopContinuation( - jsreceiver, callbackfn, TheHole, jsreceiver, 0, numberLength); - } +transitioning javascript builtin +ArrayReducePreLoopEagerDeoptContinuation( + js-implicit context: NativeContext, receiver: JSAny)( + callback: JSAny, length: JSAny): JSAny { + // All continuation points in the optimized every implementation are + // after the ToObject(O) call that ensures we are dealing with a + // JSReceiver. + // + // Also, this great mass of casts is necessary because the signature + // of Torque javascript builtins requires JSAny type for all parameters + // other than {context}. + const jsreceiver = Cast<JSReceiver>(receiver) otherwise unreachable; + const callbackfn = Cast<Callable>(callback) otherwise unreachable; + const numberLength = Cast<Number>(length) otherwise unreachable; + + // Simulate starting the loop at 0, but ensuring that the accumulator is + // the hole. The continuation stub will search for the initial non-hole + // element, rightly throwing an exception if not found. + return ArrayReduceLoopContinuation( + jsreceiver, callbackfn, TheHole, jsreceiver, 0, numberLength); +} - transitioning javascript builtin - ArrayReduceLoopEagerDeoptContinuation( - js-implicit context: NativeContext, receiver: JSAny)( - callback: JSAny, initialK: JSAny, length: JSAny, - accumulator: JSAny): JSAny { - // All continuation points in the optimized every implementation are - // after the ToObject(O) call that ensures we are dealing with a - // JSReceiver. - // - // Also, this great mass of casts is necessary because the signature - // of Torque javascript builtins requires JSAny type for all parameters - // other than {context}. - const jsreceiver = Cast<JSReceiver>(receiver) otherwise unreachable; - const callbackfn = Cast<Callable>(callback) otherwise unreachable; - const numberK = Cast<Number>(initialK) otherwise unreachable; - const numberLength = Cast<Number>(length) otherwise unreachable; - - return ArrayReduceLoopContinuation( - jsreceiver, callbackfn, accumulator, jsreceiver, numberK, numberLength); - } +transitioning javascript builtin +ArrayReduceLoopEagerDeoptContinuation( + js-implicit context: NativeContext, receiver: JSAny)( + callback: JSAny, initialK: JSAny, length: JSAny, + accumulator: JSAny): JSAny { + // All continuation points in the optimized every implementation are + // after the ToObject(O) call that ensures we are dealing with a + // JSReceiver. + // + // Also, this great mass of casts is necessary because the signature + // of Torque javascript builtins requires JSAny type for all parameters + // other than {context}. + const jsreceiver = Cast<JSReceiver>(receiver) otherwise unreachable; + const callbackfn = Cast<Callable>(callback) otherwise unreachable; + const numberK = Cast<Number>(initialK) otherwise unreachable; + const numberLength = Cast<Number>(length) otherwise unreachable; + + return ArrayReduceLoopContinuation( + jsreceiver, callbackfn, accumulator, jsreceiver, numberK, numberLength); +} - transitioning javascript builtin - ArrayReduceLoopLazyDeoptContinuation( - js-implicit context: NativeContext, receiver: JSAny)( - callback: JSAny, initialK: JSAny, length: JSAny, result: JSAny): JSAny { - // All continuation points in the optimized every implementation are - // after the ToObject(O) call that ensures we are dealing with a - // JSReceiver. - const jsreceiver = Cast<JSReceiver>(receiver) otherwise unreachable; - const callbackfn = Cast<Callable>(callback) otherwise unreachable; - const numberK = Cast<Number>(initialK) otherwise unreachable; - const numberLength = Cast<Number>(length) otherwise unreachable; - - // The accumulator is the result from the callback call which just occured. - const r = ArrayReduceLoopContinuation( - jsreceiver, callbackfn, result, jsreceiver, numberK, numberLength); - return r; - } +transitioning javascript builtin +ArrayReduceLoopLazyDeoptContinuation( + js-implicit context: NativeContext, receiver: JSAny)( + callback: JSAny, initialK: JSAny, length: JSAny, result: JSAny): JSAny { + // All continuation points in the optimized every implementation are + // after the ToObject(O) call that ensures we are dealing with a + // JSReceiver. + const jsreceiver = Cast<JSReceiver>(receiver) otherwise unreachable; + const callbackfn = Cast<Callable>(callback) otherwise unreachable; + const numberK = Cast<Number>(initialK) otherwise unreachable; + const numberLength = Cast<Number>(length) otherwise unreachable; + + // The accumulator is the result from the callback call which just occured. + const r = ArrayReduceLoopContinuation( + jsreceiver, callbackfn, result, jsreceiver, numberK, numberLength); + return r; +} - transitioning builtin ArrayReduceLoopContinuation(implicit context: Context)( - _receiver: JSReceiver, callbackfn: Callable, - initialAccumulator: JSAny|TheHole, o: JSReceiver, initialK: Number, - length: Number): JSAny { - let accumulator = initialAccumulator; - - // 8b and 9. Repeat, while k < len - for (let k: Number = initialK; k < length; k++) { - // 8b i and 9a. Let Pk be ! ToString(k). - // k is guaranteed to be a positive integer, hence ToString is - // side-effect free and HasProperty/GetProperty do the conversion inline. - - // 8b ii and 9b. Set kPresent to ? HasProperty(O, Pk). - const present: Boolean = HasProperty_Inline(o, k); - - // 6c. If kPresent is true, then - if (present == True) { - // 6c. i. Let kValue be ? Get(O, Pk). - const value: JSAny = GetProperty(o, k); - - typeswitch (accumulator) { - case (TheHole): { - // 8b. - accumulator = value; - } - case (accumulatorNotHole: JSAny): { - // 9c. ii. Set accumulator to ? Call(callbackfn, undefined, - // <accumulator, kValue, k, O>). - accumulator = Call( - context, callbackfn, Undefined, accumulatorNotHole, value, k, - o); - } - } - } +transitioning builtin ArrayReduceLoopContinuation(implicit context: Context)( + _receiver: JSReceiver, callbackfn: Callable, + initialAccumulator: JSAny|TheHole, o: JSReceiver, initialK: Number, + length: Number): JSAny { + let accumulator = initialAccumulator; - // 8b iv and 9d. Increase k by 1. (done by the loop). - } + // 8b and 9. Repeat, while k < len + for (let k: Number = initialK; k < length; k++) { + // 8b i and 9a. Let Pk be ! ToString(k). + // k is guaranteed to be a positive integer, hence ToString is + // side-effect free and HasProperty/GetProperty do the conversion inline. - // 8c. if kPresent is false, throw a TypeError exception. - // If the accumulator is discovered with the sentinel hole value, - // this means kPresent is false. - typeswitch (accumulator) { - case (TheHole): { - ThrowTypeError( - MessageTemplate::kReduceNoInitial, 'Array.prototype.reduce'); - } - case (accumulator: JSAny): { - return accumulator; - } - } - } + // 8b ii and 9b. Set kPresent to ? HasProperty(O, Pk). + const present: Boolean = HasProperty_Inline(o, k); + + // 6c. If kPresent is true, then + if (present == True) { + // 6c. i. Let kValue be ? Get(O, Pk). + const value: JSAny = GetProperty(o, k); - transitioning macro FastArrayReduce(implicit context: Context)( - o: JSReceiver, len: Number, callbackfn: Callable, - initialAccumulator: JSAny|TheHole): JSAny - labels Bailout(Number, JSAny|TheHole) { - const k = 0; - let accumulator = initialAccumulator; - Cast<Smi>(len) otherwise goto Bailout(k, accumulator); - const fastO = - Cast<FastJSArrayForRead>(o) otherwise goto Bailout(k, accumulator); - let fastOW = NewFastJSArrayForReadWitness(fastO); - - // Build a fast loop over the array. - for (let k: Smi = 0; k < len; k++) { - fastOW.Recheck() otherwise goto Bailout(k, accumulator); - - // Ensure that we haven't walked beyond a possibly updated length. - if (k >= fastOW.Get().length) goto Bailout(k, accumulator); - - const value: JSAny = fastOW.LoadElementNoHole(k) otherwise continue; typeswitch (accumulator) { case (TheHole): { + // 8b. accumulator = value; } case (accumulatorNotHole: JSAny): { + // 9c. ii. Set accumulator to ? Call(callbackfn, undefined, + // <accumulator, kValue, k, O>). accumulator = Call( - context, callbackfn, Undefined, accumulatorNotHole, value, k, - fastOW.Get()); + context, callbackfn, Undefined, accumulatorNotHole, value, k, o); } } } + + // 8b iv and 9d. Increase k by 1. (done by the loop). + } + + // 8c. if kPresent is false, throw a TypeError exception. + // If the accumulator is discovered with the sentinel hole value, + // this means kPresent is false. + typeswitch (accumulator) { + case (TheHole): { + ThrowTypeError( + MessageTemplate::kReduceNoInitial, 'Array.prototype.reduce'); + } + case (accumulator: JSAny): { + return accumulator; + } + } +} + +transitioning macro FastArrayReduce(implicit context: Context)( + o: JSReceiver, len: Number, callbackfn: Callable, + initialAccumulator: JSAny|TheHole): JSAny + labels Bailout(Number, JSAny | TheHole) { + const k = 0; + let accumulator = initialAccumulator; + Cast<Smi>(len) otherwise goto Bailout(k, accumulator); + const fastO = + Cast<FastJSArrayForRead>(o) otherwise goto Bailout(k, accumulator); + let fastOW = NewFastJSArrayForReadWitness(fastO); + + // Build a fast loop over the array. + for (let k: Smi = 0; k < len; k++) { + fastOW.Recheck() otherwise goto Bailout(k, accumulator); + + // Ensure that we haven't walked beyond a possibly updated length. + if (k >= fastOW.Get().length) goto Bailout(k, accumulator); + + const value: JSAny = fastOW.LoadElementNoHole(k) otherwise continue; typeswitch (accumulator) { case (TheHole): { - ThrowTypeError( - MessageTemplate::kReduceNoInitial, 'Array.prototype.reduce'); + accumulator = value; } - case (accumulator: JSAny): { - return accumulator; + case (accumulatorNotHole: JSAny): { + accumulator = Call( + context, callbackfn, Undefined, accumulatorNotHole, value, k, + fastOW.Get()); } } } + typeswitch (accumulator) { + case (TheHole): { + ThrowTypeError( + MessageTemplate::kReduceNoInitial, 'Array.prototype.reduce'); + } + case (accumulator: JSAny): { + return accumulator; + } + } +} - // https://tc39.github.io/ecma262/#sec-array.prototype.reduce - transitioning javascript builtin - ArrayReduce(js-implicit context: NativeContext, receiver: JSAny)( - ...arguments): JSAny { - try { - RequireObjectCoercible(receiver, 'Array.prototype.reduce'); +// https://tc39.github.io/ecma262/#sec-array.prototype.reduce +transitioning javascript builtin +ArrayReduce( + js-implicit context: NativeContext, receiver: JSAny)(...arguments): JSAny { + try { + RequireObjectCoercible(receiver, 'Array.prototype.reduce'); - // 1. Let O be ? ToObject(this value). - const o: JSReceiver = ToObject_Inline(context, receiver); + // 1. Let O be ? ToObject(this value). + const o: JSReceiver = ToObject_Inline(context, receiver); - // 2. Let len be ? ToLength(? Get(O, "length")). - const len: Number = GetLengthProperty(o); + // 2. Let len be ? ToLength(? Get(O, "length")). + const len: Number = GetLengthProperty(o); - // 3. If IsCallable(callbackfn) is false, throw a TypeError exception. - if (arguments.length == 0) { - goto NoCallableError; - } - const callbackfn = Cast<Callable>(arguments[0]) otherwise NoCallableError; + // 3. If IsCallable(callbackfn) is false, throw a TypeError exception. + if (arguments.length == 0) { + goto NoCallableError; + } + const callbackfn = Cast<Callable>(arguments[0]) otherwise NoCallableError; - // 4. If len is 0 and initialValue is not present, throw a TypeError - // exception. (This case is handled at the end of - // ArrayReduceLoopContinuation). + // 4. If len is 0 and initialValue is not present, throw a TypeError + // exception. (This case is handled at the end of + // ArrayReduceLoopContinuation). - const initialValue: JSAny|TheHole = - arguments.length > 1 ? arguments[1] : TheHole; + const initialValue: JSAny|TheHole = + arguments.length > 1 ? arguments[1] : TheHole; - try { - return FastArrayReduce(o, len, callbackfn, initialValue) - otherwise Bailout; - } - label Bailout(value: Number, accumulator: JSAny|TheHole) { - return ArrayReduceLoopContinuation( - o, callbackfn, accumulator, o, value, len); - } - } - label NoCallableError deferred { - ThrowTypeError(MessageTemplate::kCalledNonCallable, arguments[0]); + try { + return FastArrayReduce(o, len, callbackfn, initialValue) + otherwise Bailout; + } label Bailout(value: Number, accumulator: JSAny|TheHole) { + return ArrayReduceLoopContinuation( + o, callbackfn, accumulator, o, value, len); } + } label NoCallableError deferred { + ThrowTypeError(MessageTemplate::kCalledNonCallable, arguments[0]); } } +} |