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gallium: detect avx512 cpu features

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v3: fix check for xmm/ymm test
v2: style code, add avx512 to cpu dump

Reviewed-by: Roland Scheidegger <sroland@vmware.com>
This commit is contained in:
Tim Rowley
2016-05-26 15:06:07 -05:00
parent c8c46641af
commit b9578b683d
2 changed files with 36 additions and 0 deletions
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src/gallium/auxiliary/util/u_cpu_detect.c
+26
View File
@@ -388,6 +388,23 @@ util_cpu_detect(void)
util_cpu_caps.has_avx2 = (regs7[1] >> 5) & 1;
}
// check for avx512
if (((regs2[2] >> 27) & 1) && // OSXSAVE
(xgetbv() & (0x7 << 5)) && // OPMASK: upper-256 enabled by OS
((xgetbv() & 6) == 6)) { // XMM/YMM enabled by OS
uint32_t regs3[4];
cpuid(0x00000007, regs3);
util_cpu_caps.has_avx512f = (regs3[1] >> 16) & 1;
util_cpu_caps.has_avx512dq = (regs3[1] >> 17) & 1;
util_cpu_caps.has_avx512ifma = (regs3[1] >> 21) & 1;
util_cpu_caps.has_avx512pf = (regs3[1] >> 26) & 1;
util_cpu_caps.has_avx512er = (regs3[1] >> 27) & 1;
util_cpu_caps.has_avx512cd = (regs3[1] >> 28) & 1;
util_cpu_caps.has_avx512bw = (regs3[1] >> 30) & 1;
util_cpu_caps.has_avx512vl = (regs3[1] >> 31) & 1;
util_cpu_caps.has_avx512vbmi = (regs3[2] >> 1) & 1;
}
if (regs[1] == 0x756e6547 && regs[2] == 0x6c65746e && regs[3] == 0x49656e69) {
/* GenuineIntel */
util_cpu_caps.has_intel = 1;
@@ -455,6 +472,15 @@ util_cpu_detect(void)
debug_printf("util_cpu_caps.has_xop = %u\n", util_cpu_caps.has_xop);
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);
debug_printf("util_cpu_caps.has_avx512f = %u\n", util_cpu_caps.has_avx512f);
debug_printf("util_cpu_caps.has_avx512dq = %u\n", util_cpu_caps.has_avx512dq);
debug_printf("util_cpu_caps.has_avx512ifma = %u\n", util_cpu_caps.has_avx512ifma);
debug_printf("util_cpu_caps.has_avx512pf = %u\n", util_cpu_caps.has_avx512pf);
debug_printf("util_cpu_caps.has_avx512er = %u\n", util_cpu_caps.has_avx512er);
debug_printf("util_cpu_caps.has_avx512cd = %u\n", util_cpu_caps.has_avx512cd);
debug_printf("util_cpu_caps.has_avx512bw = %u\n", util_cpu_caps.has_avx512bw);
debug_printf("util_cpu_caps.has_avx512vl = %u\n", util_cpu_caps.has_avx512vl);
debug_printf("util_cpu_caps.has_avx512vbmi = %u\n", util_cpu_caps.has_avx512vbmi);
}
#endif
src/gallium/auxiliary/util/u_cpu_detect.h
+10
View File
@@ -72,6 +72,16 @@ struct util_cpu_caps {
unsigned has_xop:1;
unsigned has_altivec:1;
unsigned has_daz:1;
unsigned has_avx512f:1;
unsigned has_avx512dq:1;
unsigned has_avx512ifma:1;
unsigned has_avx512pf:1;
unsigned has_avx512er:1;
unsigned has_avx512cd:1;
unsigned has_avx512bw:1;
unsigned has_avx512vl:1;
unsigned has_avx512vbmi:1;
};
extern struct util_cpu_caps