ref: dc92dab20a86f4d3a807ab1cbb6be265f4022212
parent: 99aaff599e77cda8d6d709288a087d0fcdaef13d
author: Jonathan Lennox <[email protected]>
date: Tue May 31 11:52:36 EDT 2016
Modify autoconf tests for intrinsics to stop clang from optimizing them away. Signed-off-by: Jean-Marc Valin <[email protected]>
--- a/configure.ac
+++ b/configure.ac
@@ -472,6 +472,7 @@
[[
static float32x4_t A0, A1, SUMM;
SUMM = vmlaq_f32(SUMM, A0, A1);
+ return (int)vgetq_lane_f32(SUMM, 0);
]]
)
AS_IF([test x"$OPUS_ARM_MAY_HAVE_NEON_INTR" = x"1" && test x"$OPUS_ARM_PRESUME_NEON_INTR" != x"1"],
@@ -521,10 +522,13 @@
[OPUS_X86_MAY_HAVE_SSE],
[OPUS_X86_PRESUME_SSE],
[[#include <xmmintrin.h>
+ #include <time.h>
]],
[[
- static __m128 mtest;
- mtest = _mm_setzero_ps();
+ __m128 mtest;
+ mtest = _mm_set1_ps((float)time(NULL));
+ mtest = _mm_mul_ps(mtest, mtest);
+ return _mm_cvtss_si32(mtest);
]]
)
AS_IF([test x"$OPUS_X86_MAY_HAVE_SSE" = x"1" && test x"$OPUS_X86_PRESUME_SSE" != x"1"],
@@ -539,10 +543,13 @@
[OPUS_X86_MAY_HAVE_SSE2],
[OPUS_X86_PRESUME_SSE2],
[[#include <emmintrin.h>
+ #include <time.h>
]],
[[
- static __m128i mtest;
- mtest = _mm_setzero_si128();
+ __m128i mtest;
+ mtest = _mm_set1_epi32((int)time(NULL));
+ mtest = _mm_mul_epu32(mtest, mtest);
+ return _mm_cvtsi128_si32(mtest);
]]
)
AS_IF([test x"$OPUS_X86_MAY_HAVE_SSE2" = x"1" && test x"$OPUS_X86_PRESUME_SSE2" != x"1"],
@@ -557,11 +564,13 @@
[OPUS_X86_MAY_HAVE_SSE4_1],
[OPUS_X86_PRESUME_SSE4_1],
[[#include <smmintrin.h>
+ #include <time.h>
]],
[[
- static __m128i mtest;
- mtest = _mm_setzero_si128();
- mtest = _mm_cmpeq_epi64(mtest, mtest);
+ __m128i mtest;
+ mtest = _mm_set1_epi32((int)time(NULL));
+ mtest = _mm_mul_epi32(mtest, mtest);
+ return _mm_cvtsi128_si32(mtest);
]]
)
AS_IF([test x"$OPUS_X86_MAY_HAVE_SSE4_1" = x"1" && test x"$OPUS_X86_PRESUME_SSE4_1" != x"1"],
@@ -576,10 +585,13 @@
[OPUS_X86_MAY_HAVE_AVX],
[OPUS_X86_PRESUME_AVX],
[[#include <immintrin.h>
+ #include <time.h>
]],
[[
- static __m256 mtest;
- mtest = _mm256_setzero_ps();
+ __m256 mtest;
+ mtest = _mm256_set1_ps((float)time(NULL));
+ mtest = _mm256_addsub_ps(mtest, mtest);
+ return _mm_cvtss_si32(_mm256_extractf128_ps(mtest, 0));
]]
)
AS_IF([test x"$OPUS_X86_MAY_HAVE_AVX" = x"1" && test x"$OPUS_X86_PRESUME_AVX" != x"1"],