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[turbofan] Handle Smi -> Float32 conversion in representation changer.

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BUG=chromium:693425

Review-Url: https://codereview.chromium.org/2749193003
Cr-Commit-Position: refs/heads/master@{#43811}
This commit is contained in:
jarin 2017-03-15 00:44:59 -07:00 committed by Commit bot
parent be6b9f9204
commit 8c114d1737
2 changed files with 12 additions and 2 deletions
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3
src/compiler/representation-change.cc
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@ -498,8 +498,7 @@ Node* RepresentationChanger::GetFloat32RepresentationFor(
node = jsgraph()->graph()->NewNode(op, node);
op = machine()->TruncateFloat64ToFloat32();
}
} else if (output_rep == MachineRepresentation::kTagged ||
output_rep == MachineRepresentation::kTaggedPointer) {
} else if (IsAnyTagged(output_rep)) {
if (output_type->Is(Type::NumberOrOddball())) {
// tagged -> float64 -> float32
if (output_type->Is(Type::Number())) {

11
test/mjsunit/compiler/regress-693425.js Normal file
View File

@ -0,0 +1,11 @@
// Copyright 2017 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.
var g = 0;
g++;
var f32 = new Float32Array();
function foo() {
f32[0 >> 2] = g;
}
foo();