commit dc165fcd4effb9e005a4514ab7d666322648e971
author Richard Henderson <richard.henderson@linaro.org> Mon May 01 22:05:55 2023 +0100
committer Richard Henderson <richard.henderson@linaro.org> Tue May 02 13:05:45 2023 -0700
tree 2184c5f9c81038ab35aaf671b9293eb9a82ee8a6
parent c4075353854ed320cf9225ebd5605836ae236640

migration/xbzrle: Use __attribute__((target)) for avx512

Use the attribute, which is supported by clang, instead of
the #pragma, which is not supported and, for some reason,
also not detected by the meson probe, so we fail by -Werror.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Message-Id: <20230501210555.289806-1-richard.henderson@linaro.org>

meson.build

diff --git a/meson.build b/meson.build
index c44d05a..77d4289 100644
--- a/meson.build
+++ b/meson.build
@@ -2370,12 +2370,9 @@
 config_host_data.set('CONFIG_AVX512BW_OPT', get_option('avx512bw') \
   .require(have_cpuid_h, error_message: 'cpuid.h not available, cannot enable AVX512BW') \
   .require(cc.links('''
-    #pragma GCC push_options
-    #pragma GCC target("avx512bw")
     #include <cpuid.h>
     #include <immintrin.h>
-    static int bar(void *a) {
-
+    static int __attribute__((target("avx512bw"))) bar(void *a) {
       __m512i *x = a;
       __m512i res= _mm512_abs_epi8(*x);
       return res[1];