Before we were adding -DHAVE_SSE41 which isn't what the code is
looking for, so some uses of the sse4.1 code were always being
skipped.
Fixes: 84486f6462 ("meson: Enable SSE4.1 optimizations")
---
meson.build | 20 +++++++++++++++-----
1 file changed, 15 insertions(+), 5 deletions(-)
diff --git a/meson.build b/meson.build
index 97619f786b..3bbda53ccf 100644
--- a/meson.build
+++ b/meson.build
@@ -771,9 +771,9 @@ foreach a : ['-Werror=pointer-arith', '-Werror=vla']
endif
endforeach
+with_sse41 = false
+sse41_args = []
if host_machine.cpu_family().startswith('x86')
- pre_args += '-DHAVE_SSE41'
- with_sse41 = true
sse41_args = ['-msse4.1']
# GCC on x86 (not x86_64) with -msse* assumes a 16 byte aligned stack, but
@@ -781,9 +781,19 @@ if host_machine.cpu_family().startswith('x86')
if host_machine.cpu_family() == 'x86'
sse41_args += '-mstackrealign'
endif
-else
- with_sse41 = false
- sse41_args = []
+
+ if cc.compiles('''#include <smmintrin.h>
+ int param;
+ int main () {
+ __m128i a = _mm_set1_epi32 (param), b = _mm_set1_epi32
(param + 1), c;
+ c = _mm_max_epu32(a, b);
+ return _mm_cvtsi128_si32(c);
+ }''',
+ name : 'SSE4.1 intrinsics',
+ args : sse41_args)
+ with_sse41 = true
+ pre_args += '-DUSE_SSE41'
+ endif
endif
# Check for GCC style atomics
--
2.14.3
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