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Use common code for AVX detection

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This commit is contained in:
Ken Cooke 2016-06-07 06:50:38 -07:00
parent b60b9bb312
commit 14b51d6615
1 changed files with 2 additions and 85 deletions
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87
libraries/audio/src/AudioSRC.cpp
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@ -370,95 +370,12 @@ int AudioSRC::multirateFilter2_SSE(const float* input0, const float* input1, flo
return outputFrames;
}
//
// Detect AVX/AVX2 support
//
#if defined(_MSC_VER)
#include <intrin.h>
static bool cpuSupportsAVX() {
int info[4];
int mask = (1 << 27) | (1 << 28); // OSXSAVE and AVX
__cpuidex(info, 0x1, 0);
bool result = false;
if ((info[2] & mask) == mask) {
if ((_xgetbv(_XCR_XFEATURE_ENABLED_MASK) & 0x6) == 0x6) {
result = true;
}
}
return result;
}
static bool cpuSupportsAVX2() {
int info[4];
int mask = (1 << 5); // AVX2
bool result = false;
if (cpuSupportsAVX()) {
__cpuidex(info, 0x7, 0);
if ((info[1] & mask) == mask) {
result = true;
}
}
return result;
}
#elif defined(__GNUC__)
#include <cpuid.h>
static bool cpuSupportsAVX() {
unsigned int eax, ebx, ecx, edx;
unsigned int mask = (1 << 27) | (1 << 28); // OSXSAVE and AVX
bool result = false;
if (__get_cpuid(0x1, &eax, &ebx, &ecx, &edx) && ((ecx & mask) == mask)) {
__asm__("xgetbv" : "=a"(eax), "=d"(edx) : "c"(0));
if ((eax & 0x6) == 0x6) {
result = true;
}
}
return result;
}
static bool cpuSupportsAVX2() {
unsigned int eax, ebx, ecx, edx;
unsigned mask = (1 << 5); // AVX2
bool result = false;
if (cpuSupportsAVX()) {
if (__get_cpuid(0x7, &eax, &ebx, &ecx, &edx) && ((ebx & mask) == mask)) {
result = true;
}
}
return result;
}
#else
static bool cpuSupportsAVX() {
return false;
}
static bool cpuSupportsAVX2() {
return false;
}
#endif
//
// Runtime CPU dispatch
//
#include "CPUDetect.h"
int AudioSRC::multirateFilter1(const float* input0, float* output0, int inputFrames) {
static auto f = cpuSupportsAVX2() ? &AudioSRC::multirateFilter1_AVX2 : &AudioSRC::multirateFilter1_SSE;