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Implement RETRO_SIMD_MOVBE

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This commit is contained in:
twinaphex 2015-12-25 06:17:17 +01:00
parent 8b130b3866
commit 71e2487e8b
1 changed files with 14 additions and 0 deletions
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14
performance.c
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@ -430,6 +430,11 @@ unsigned retro_get_cpu_cores(void)
#endif
}
/* According to http://en.wikipedia.org/wiki/CPUID */
#define VENDOR_INTEL_b 0x756e6547
#define VENDOR_INTEL_c 0x6c65746e
#define VENDOR_INTEL_d 0x49656e69
/**
* retro_get_cpu_features:
*
@ -446,6 +451,7 @@ uint64_t retro_get_cpu_features(void)
uint64_t cpu = 0;
unsigned max_flag = 0;
#if defined(CPU_X86)
int vendor_is_intel = 0;
const int avx_flags = (1 << 27) | (1 << 28);
#endif
@ -470,6 +476,11 @@ uint64_t retro_get_cpu_features(void)
RARCH_LOG("[CPUID]: Vendor: %s\n", vendor);
vendor_is_intel = (
flags[1] == VENDOR_INTEL_b &&
flags[2] == VENDOR_INTEL_c &&
flags[3] == VENDOR_INTEL_d);
max_flag = flags[0];
if (max_flag < 1) /* Does CPUID not support func = 1? (unlikely ...) */
return 0;
@ -505,6 +516,9 @@ uint64_t retro_get_cpu_features(void)
if ((flags[2] & (1 << 23)))
cpu |= RETRO_SIMD_POPCNT;
if (vendor_is_intel && (flags[2] & (1 << 22)))
cpu |= RETRO_SIMD_MOVBE;
if (flags[2] & (1 << 25))
cpu |= RETRO_SIMD_AES;