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// Copyright 2015 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
(function(global, code_stubs) {
"use strict";
code_stubs.StringLengthTFStub = function StringLengthTFStub(call_conv, minor_key) {
var stub = function(receiver, name, i, v) {
// i and v are dummy parameters mandated by the InterfaceDescriptor,
// (LoadWithVectorDescriptor).
return %_StringGetLength(%_JSValueGetValue(receiver));
}
return stub;
}
code_stubs.StringAddTFStub = function StringAddTFStub(call_conv, minor_key) {
var stub = function(left, right) {
return %StringAdd(left, right);
}
return stub;
}
const kTurboFanICCallModeMask = 1;
const kTurboFanICCallForUnptimizedCode = 0;
const kTurboFanICCallForOptimizedCode = 1;
code_stubs.MathFloorStub = function MathFloorStub(call_conv, minor_key) {
var call_from_optimized_ic = function(f, i, tv, receiver, v) {
"use strict";
// |f| is this function's JSFunction
// |i| is TypeFeedbackVector slot # of callee's CallIC for Math.floor call
// |receiver| is receiver, should not be used
// |tv| is the calling function's type vector
// |v| is the value to floor
if (f !== %_FixedArrayGet(tv, i|0)) {
return %_CallFunction(receiver, v, f);
}
var r = %_MathFloor(+v);
if (%_IsMinusZero(r)) {
// Collect type feedback when the result of the floor is -0. This is
// accomplished by storing a sentinel in the second, "extra"
// TypeFeedbackVector slot corresponding to the Math.floor CallIC call in
// the caller's TypeVector.
%_FixedArraySet(tv, ((i|0)+1)|0, 1);
return -0;
}
// Return integers in smi range as smis.
var trunc = r|0;
if (trunc === r) {
return trunc;
}
return r;
}
var call_mode = (minor_key & kTurboFanICCallModeMask);
if (call_mode == kTurboFanICCallForOptimizedCode) {
return call_from_optimized_ic;
} else {
%SetForceInlineFlag(call_from_optimized_ic);
var call_from_unoptimized_ic = function(f, i, receiver, v) {
var tv = %_GetTypeFeedbackVector(%_GetCallerJSFunction());
return call_from_optimized_ic(f, i, tv, receiver, v);
}
return call_from_unoptimized_ic;
}
}
})
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