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-rwxr-xr-xconfigure17
1 files changed, 12 insertions, 5 deletions
diff --git a/configure b/configure
index 3c0e279762..c57d6a7a6d 100755
--- a/configure
+++ b/configure
@@ -1779,13 +1779,20 @@ fi
# avx2 optimization requirement check
cat > $TMPC << EOF
-static void bar(void) {}
+#pragma GCC push_options
+#pragma GCC target("avx2")
+#include <cpuid.h>
+#include <immintrin.h>
+
+static int bar(void *a) {
+ return _mm256_movemask_epi8(_mm256_cmpeq_epi8(*(__m256i *)a, (__m256i){0}));
+}
static void *bar_ifunc(void) {return (void*) bar;}
-void foo(void) __attribute__((ifunc("bar_ifunc")));
-int main(void) { foo(); return 0; }
+int foo(void *a) __attribute__((ifunc("bar_ifunc")));
+int main(int argc, char *argv[]) { return foo(argv[0]);}
EOF
-if compile_prog "-mavx2" "" ; then
- if readelf --syms $TMPE |grep "IFUNC.*foo" >/dev/null 2>&1; then
+if compile_object "" ; then
+ if readelf --syms $TMPO |grep "IFUNC.*foo" >/dev/null 2>&1; then
avx2_opt="yes"
fi
fi