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Add detection of AVX2

brly committed 11 years ago

Commit b7fb9411 parent f1d1af02 files · +10 −0Browse files

Showing the changes to codec/common/src/cpu.cpp (1 of 2 files). Show all

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codec/common/src/cpu.cpp+9−0
@@ -136,6 +136,15 @@ uint32_t WelsCPUFeatureDetect (int32_t* pNumberOfLogicProcessors) { · 135 unmodified lines
136 uiCPU |= WELS_CPU_MOVBE;136 uiCPU |= WELS_CPU_MOVBE;
137 }137 }
138 138
139 if (uiMaxCpuidLevel >= 7) {
140 uiFeatureC = 0;
141 WelsCPUId (7, &uiFeatureA, &uiFeatureB, &uiFeatureC, &uiFeatureD);
142 if ((uiCPU & WELS_CPU_AVX) && (uiFeatureB & 0x00000020)) {
143 /* AVX2 supported */
144 uiCPU |= WELS_CPU_AVX2;
145 }
146 }
147
139 if (pNumberOfLogicProcessors != NULL) {148 if (pNumberOfLogicProcessors != NULL) {
140 if (uiCPU & WELS_CPU_HTT) {149 if (uiCPU & WELS_CPU_HTT) {
141 *pNumberOfLogicProcessors = (uiFeatureB & 0x00ff0000) >> 16; // feature bits: 23-16 on returned EBX150 *pNumberOfLogicProcessors = (uiFeatureB & 0x00ff0000) >> 16; // feature bits: 23-16 on returned EBX

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