[PATCH v1 1/8] config/x86: add global defines for checking AVX-512

[Bruce Richardson]

Rather than having each driver do its own checking for AVX-512 support,
let's do it once in config/x86/meson.build and let all drivers re-use
that result.

Signed-off-by: Bruce Richardson <bruce.richardson at intel.com>
---
 config/x86/meson.build | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/config/x86/meson.build b/config/x86/meson.build
index 8087b9ae91..f973878371 100644
--- a/config/x86/meson.build
+++ b/config/x86/meson.build
@@ -16,7 +16,8 @@ endif
 
 # check if compiler is working with _mm512_extracti64x4_epi64
 # Ref: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82887
-if cc.has_argument('-mavx512f')
+cc_has_avx512 = false
+if binutils_ok and cc.has_argument('-mavx512f')
     code = '''#include <immintrin.h>
     void test(__m512i zmm){
         __m256i ymm = _mm512_extracti64x4_epi64(zmm, 0);}'''
@@ -24,6 +25,15 @@ if cc.has_argument('-mavx512f')
     if result == false
         machine_args += '-mno-avx512f'
         warning('Broken _mm512_extracti64x4_epi64, disabling AVX512 support')
+    else
+        cc_avx512_flags = ['-mavx512f', '-mavx512vl', '-mavx512dq', '-mavx512bw']
+        cc_has_avx512 = cc.has_multi_arguments(cc_avx512_flags)
+        target_has_avx512 = (
+                cc.get_define('__AVX512F__', args: machine_args) != '' and
+                cc.get_define('__AVX512BW__', args: machine_args) != '' and
+                cc.get_define('__AVX512DQ__', args: machine_args) != '' and
+                cc.get_define('__AVX512VL__', args: machine_args) != ''
+            )
     endif
 endif
 
-- 
2.43.0