diff options
Diffstat (limited to 'mesalib/src/gallium/auxiliary/util/u_cpu_detect.c')
| -rw-r--r-- | mesalib/src/gallium/auxiliary/util/u_cpu_detect.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/mesalib/src/gallium/auxiliary/util/u_cpu_detect.c b/mesalib/src/gallium/auxiliary/util/u_cpu_detect.c index 588fc7c72..87ad78095 100644 --- a/mesalib/src/gallium/auxiliary/util/u_cpu_detect.c +++ b/mesalib/src/gallium/auxiliary/util/u_cpu_detect.c @@ -230,8 +230,28 @@ static INLINE uint64_t xgetbv(void) #else return 0; #endif +} + +#if defined(PIPE_ARCH_X86) +static INLINE boolean sse2_has_daz(void) +{ + struct { + uint32_t pad1[7]; + uint32_t mxcsr_mask; + uint32_t pad2[128-8]; + } PIPE_ALIGN_VAR(16) fxarea; + + fxarea.mxcsr_mask = 0; +#if (defined(PIPE_CC_GCC) || defined(PIPE_CC_SUNPRO)) + __asm __volatile ("fxsave %0" : "+m" (fxarea)); +#elif (defined(PIPE_CC_MSVC) || defined(PIPE_CC_ICL)) + _fxsave(&fxarea); +#endif + return !!(fxarea.mxcsr_mask & (1 << 6)); } +#endif + #endif /* X86 or X86_64 */ void @@ -310,6 +330,12 @@ util_cpu_detect(void) ((xgetbv() & 6) == 6); // XMM & YMM util_cpu_caps.has_f16c = (regs2[2] >> 29) & 1; util_cpu_caps.has_mmx2 = util_cpu_caps.has_sse; /* SSE cpus supports mmxext too */ +#if defined(PIPE_ARCH_X86_64) + util_cpu_caps.has_daz = 1; +#else + util_cpu_caps.has_daz = util_cpu_caps.has_sse3 || + (util_cpu_caps.has_sse2 && sse2_has_daz()); +#endif cacheline = ((regs2[1] >> 8) & 0xFF) * 8; if (cacheline > 0) @@ -368,9 +394,12 @@ util_cpu_detect(void) debug_printf("util_cpu_caps.has_sse4_1 = %u\n", util_cpu_caps.has_sse4_1); debug_printf("util_cpu_caps.has_sse4_2 = %u\n", util_cpu_caps.has_sse4_2); debug_printf("util_cpu_caps.has_avx = %u\n", util_cpu_caps.has_avx); + debug_printf("util_cpu_caps.has_f16c = %u\n", util_cpu_caps.has_f16c); + debug_printf("util_cpu_caps.has_popcnt = %u\n", util_cpu_caps.has_popcnt); debug_printf("util_cpu_caps.has_3dnow = %u\n", util_cpu_caps.has_3dnow); debug_printf("util_cpu_caps.has_3dnow_ext = %u\n", util_cpu_caps.has_3dnow_ext); debug_printf("util_cpu_caps.has_altivec = %u\n", util_cpu_caps.has_altivec); + debug_printf("util_cpu_caps.has_daz = %u\n", util_cpu_caps.has_daz); } #endif |