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Issue 733893008: [x64] Fix optimization for certain checked load/stores. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Created 6 years ago
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1 // Copyright 2014 the V8 project authors. All rights reserved. 1 // Copyright 2014 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 function module(stdlib, foreign, heap) { 5 function module(stdlib, foreign, heap) {
6 "use asm"; 6 "use asm";
7 var MEM32 = new stdlib.Int32Array(heap); 7 var MEM32 = new stdlib.Int32Array(heap);
8 function foo(i) { 8 function foo(i) {
9 i = i|0; 9 i = i|0;
10 MEM32[0] = i; 10 MEM32[0] = i;
11 return MEM32[i + 4 >> 2]|0; 11 return MEM32[i + 4 >> 2]|0;
12 } 12 }
13 return { foo: foo }; 13 return { foo: foo };
14 } 14 }
15 15
16 var foo = module(this, {}, new ArrayBuffer(64*1024)).foo; 16 var foo = module(this, {}, new ArrayBuffer(64*1024)).foo;
17 assertEquals(-4, foo(-4)); 17 assertEquals(-4, foo(-4));
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