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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium 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 #include "base/cpu.h" | 5 #include "base/cpu.h" |
6 #include "build/build_config.h" | 6 #include "build/build_config.h" |
7 | 7 |
8 #include "testing/gtest/include/gtest/gtest.h" | 8 #include "testing/gtest/include/gtest/gtest.h" |
9 | 9 |
10 // Tests whether we can run extended instructions represented by the CPU | 10 // Tests whether we can run extended instructions represented by the CPU |
11 // information. This test actually executes some extended instructions (such as | 11 // information. This test actually executes some extended instructions (such as |
12 // MMX, SSE, etc.) supported by the CPU and sees we can run them without | 12 // MMX, SSE, etc.) supported by the CPU and sees we can run them without |
13 // "undefined instruction" exceptions. That is, this test succeeds when this | 13 // "undefined instruction" exceptions. That is, this test succeeds when this |
14 // test finishes without a crash. | 14 // test finishes without a crash. |
15 TEST(CPU, RunExtendedInstructions) { | 15 TEST(CPU, RunExtendedInstructions) { |
16 #if defined(ARCH_CPU_X86_FAMILY) | 16 #if defined(ARCH_CPU_X86_FAMILY) |
17 // Retrieve the CPU information. | 17 // Retrieve the CPU information. |
18 base::CPU cpu; | 18 base::CPU cpu; |
19 | 19 |
20 #if defined(OS_WIN) | 20 // TODO(jschuh): crbug.com/168866 Find a way to enable this on Win64. |
| 21 #if defined(OS_WIN) && !defined(_M_X64) |
21 ASSERT_TRUE(cpu.has_mmx()); | 22 ASSERT_TRUE(cpu.has_mmx()); |
22 | 23 |
23 // Execute an MMX instruction. | 24 // Execute an MMX instruction. |
24 __asm emms; | 25 __asm emms; |
25 | 26 |
26 if (cpu.has_sse()) { | 27 if (cpu.has_sse()) { |
27 // Execute an SSE instruction. | 28 // Execute an SSE instruction. |
28 __asm xorps xmm0, xmm0; | 29 __asm xorps xmm0, xmm0; |
29 } | 30 } |
30 | 31 |
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83 __asm__ __volatile__("pmuldq %%xmm0, %%xmm0\n" : : : "xmm0"); | 84 __asm__ __volatile__("pmuldq %%xmm0, %%xmm0\n" : : : "xmm0"); |
84 } | 85 } |
85 | 86 |
86 if (cpu.has_sse42()) { | 87 if (cpu.has_sse42()) { |
87 // Execute an SSE 4.2 instruction. | 88 // Execute an SSE 4.2 instruction. |
88 __asm__ __volatile__("crc32 %%eax, %%eax\n" : : : "eax"); | 89 __asm__ __volatile__("crc32 %%eax, %%eax\n" : : : "eax"); |
89 } | 90 } |
90 #endif | 91 #endif |
91 #endif | 92 #endif |
92 } | 93 } |
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