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ERMS detect work around for compiler bug

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BUG=213
TEST=cpu tool/unittest under sde
Review URL: https://webrtc-codereview.appspot.com/1283006

git-svn-id: http://libyuv.googlecode.com/svn/trunk@643 16f28f9a-4ce2-e073-06de-1de4eb20be90
This commit is contained in:
fbarchard@google.com 2013-04-04 19:03:28 +00:00
parent c56a55fc72
commit 0057aeb1a9
3 changed files with 14 additions and 13 deletions
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2
README.chromium
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@ -1,6 +1,6 @@
Name: libyuv
URL: http://code.google.com/p/libyuv/
Version: 642
Version: 643
License: BSD
License File: LICENSE

2
include/libyuv/version.h
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@ -11,6 +11,6 @@
#ifndef INCLUDE_LIBYUV_VERSION_H_ // NOLINT
#define INCLUDE_LIBYUV_VERSION_H_
#define LIBYUV_VERSION 642
#define LIBYUV_VERSION 643
#endif // INCLUDE_LIBYUV_VERSION_H_ NOLINT

23
source/cpu_id.cc
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@ -161,19 +161,20 @@ static bool TestEnv(const char* name) {
LIBYUV_API
int InitCpuFlags(void) {
#if !defined(__CLR_VER) && defined(CPU_X86)
int cpu_info[4] = { 0, 0, 0, 0 };
__cpuid(cpu_info, 1);
cpu_info_ = ((cpu_info[3] & 0x04000000) ? kCpuHasSSE2 : 0) |
((cpu_info[2] & 0x00000200) ? kCpuHasSSSE3 : 0) |
((cpu_info[2] & 0x00080000) ? kCpuHasSSE41 : 0) |
((cpu_info[2] & 0x00100000) ? kCpuHasSSE42 : 0) |
int cpu_info1[4] = { 0, 0, 0, 0 };
int cpu_info7[4] = { 0, 0, 0, 0 };
__cpuid(cpu_info1, 1);
__cpuid(cpu_info7, 7);
cpu_info_ = ((cpu_info1[3] & 0x04000000) ? kCpuHasSSE2 : 0) |
((cpu_info1[2] & 0x00000200) ? kCpuHasSSSE3 : 0) |
((cpu_info1[2] & 0x00080000) ? kCpuHasSSE41 : 0) |
((cpu_info1[2] & 0x00100000) ? kCpuHasSSE42 : 0) |
((cpu_info7[1] & 0x00000200) ? kCpuHasERMS : 0) |
kCpuHasX86;
#ifdef HAS_XGETBV
if ((cpu_info[2] & 0x18000000) == 0x18000000 && // AVX and OSSave
(XGetBV(kXCR_XFEATURE_ENABLED_MASK) & 0x06) == 0x06) { // Save YMM
__cpuid(cpu_info, 7);
cpu_info_ |= ((cpu_info[1] & 0x00000020) ? kCpuHasAVX2 : 0) |
((cpu_info[1] & 0x00000200) ? kCpuHasERMS : 0) |
if ((cpu_info1[2] & 0x18000000) == 0x18000000 && // AVX and OSSave
(XGetBV(kXCR_XFEATURE_ENABLED_MASK) & 0x06) == 0x06) { // Saves YMM.
cpu_info_ |= ((cpu_info7[1] & 0x00000020) ? kCpuHasAVX2 : 0) |
kCpuHasAVX;
}
#endif