diff options
Diffstat (limited to 'src/gallium')
| -rw-r--r-- | src/gallium/auxiliary/util/u_cpu_detect.c | 29 | ||||
| -rw-r--r-- | src/gallium/auxiliary/util/u_cpu_detect.h | 1 | ||||
| -rw-r--r-- | src/gallium/auxiliary/util/u_math.c | 2 |
3 files changed, 31 insertions, 1 deletions
diff --git a/src/gallium/auxiliary/util/u_cpu_detect.c b/src/gallium/auxiliary/util/u_cpu_detect.c index 588fc7c7292..c58a3dd07fc 100644 --- a/src/gallium/auxiliary/util/u_cpu_detect.c +++ b/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 diff --git a/src/gallium/auxiliary/util/u_cpu_detect.h b/src/gallium/auxiliary/util/u_cpu_detect.h index f9cd6475e45..cc3e0ce0344 100644 --- a/src/gallium/auxiliary/util/u_cpu_detect.h +++ b/src/gallium/auxiliary/util/u_cpu_detect.h @@ -68,6 +68,7 @@ struct util_cpu_caps { unsigned has_3dnow:1; unsigned has_3dnow_ext:1; unsigned has_altivec:1; + unsigned has_daz:1; }; extern struct util_cpu_caps diff --git a/src/gallium/auxiliary/util/u_math.c b/src/gallium/auxiliary/util/u_math.c index f3fe392babe..6981ee93912 100644 --- a/src/gallium/auxiliary/util/u_math.c +++ b/src/gallium/auxiliary/util/u_math.c @@ -111,7 +111,7 @@ util_fpstate_set_denorms_to_zero(unsigned current_mxcsr) if (util_cpu_caps.has_sse) { /* Enable flush to zero mode */ current_mxcsr |= _MM_FLUSH_ZERO_MASK; - if (util_cpu_caps.has_sse3) { + if (util_cpu_caps.has_daz) { /* Enable denormals are zero mode */ current_mxcsr |= _MM_DENORMALS_ZERO_MASK; } |