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util/u_cpu_detect: Detect clflushopt support

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Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/22379>
This commit is contained in:
Jordan Justen
2023-03-30 00:44:52 -07:00
committed by Marge Bot
parent 159c797362
commit 6f30c980dd
2 changed files with 18 additions and 14 deletions
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6
src/util/u_cpu_detect.c
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@@ -878,9 +878,11 @@ _util_cpu_detect_once(void)
if (cacheline > 0)
util_cpu_caps.cacheline = cacheline;
}
if (util_cpu_caps.has_avx && regs[0] >= 0x00000007) {
if (regs[0] >= 0x00000007) {
uint32_t regs7[4];
cpuid_count(0x00000007, 0x00000000, regs7);
util_cpu_caps.has_clflushopt = (regs7[1] >> 23) & 1;
if (util_cpu_caps.has_avx) {
util_cpu_caps.has_avx2 = (regs7[1] >> 5) & 1;
// check for avx512
@@ -896,6 +898,7 @@ _util_cpu_detect_once(void)
util_cpu_caps.has_avx512vbmi = (regs7[2] >> 1) & 1;
}
}
}
if (regs[1] == 0x756e6547 && regs[2] == 0x6c65746e && regs[3] == 0x49656e69) {
/* GenuineIntel */
@@ -986,6 +989,7 @@ _util_cpu_detect_once(void)
printf("util_cpu_caps.has_avx512bw = %u\n", util_cpu_caps.has_avx512bw);
printf("util_cpu_caps.has_avx512vl = %u\n", util_cpu_caps.has_avx512vl);
printf("util_cpu_caps.has_avx512vbmi = %u\n", util_cpu_caps.has_avx512vbmi);
printf("util_cpu_caps.has_clflushopt = %u\n", util_cpu_caps.has_clflushopt);
printf("util_cpu_caps.num_L3_caches = %u\n", util_cpu_caps.num_L3_caches);
printf("util_cpu_caps.num_cpu_mask_bits = %u\n", util_cpu_caps.num_cpu_mask_bits);
}

2
src/util/u_cpu_detect.h
View File

@@ -120,7 +120,7 @@ struct util_cpu_caps_t {
unsigned has_avx512vl:1;
unsigned has_avx512vbmi:1;
unsigned unused:1;
unsigned has_clflushopt:1;
unsigned num_L3_caches;
unsigned num_cpu_mask_bits;