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Add used attribute in order to make NEON detection working with -flto.

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Martin Liska 2019-07-24 10:12:17 +02:00 committed by Tim-Philipp Müller
parent df7b189ecb
commit d8d4904e71
1 changed files with 1 additions and 1 deletions
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2
configure.ac
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@ -219,7 +219,7 @@ AC_MSG_CHECKING(for ARM NEON support in current arch/CFLAGS)
AC_LINK_IFELSE([
AC_LANG_PROGRAM([[
#include <arm_neon.h>
int32x4_t testfunc(int16_t *a, int16_t *b) {
int32x4_t __attribute__((used)) testfunc(int16_t *a, int16_t *b) {
asm volatile ("vmull.s16 q0, d0, d0" : : : "q0");
return vmull_s16(vld1_s16(a), vld1_s16(b));
}