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| author | Wayne Davison <wayne@opencoder.net> | 2020-06-20 17:36:13 -0700 |
|---|---|---|
| committer | Wayne Davison <wayne@opencoder.net> | 2020-06-20 17:48:56 -0700 |
| commit | 29c7a4558a55a5f018b92794b6b689471d2172cf (patch) | |
| tree | 5186002d2ac6159780adc162cb5cbea13c4d6535 /configure.ac | |
| parent | b7dc2ca25c60119a7b0b15dde822c48627c629f8 (diff) | |
| download | rsync-29c7a4558a55a5f018b92794b6b689471d2172cf.tar.gz | |
Include more SIMD test code to weed out older compilers.
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/configure.ac b/configure.ac index 06f740da..208d4de7 100644 --- a/configure.ac +++ b/configure.ac @@ -204,8 +204,6 @@ if test x"$enable_simd" != x"no"; then # For x86-64 SIMD, g++ >=5 or clang++ >=7 is required if test x"$build_cpu" = x"x86_64"; then AC_LANG(C++) - SAVE_FLAGS="$CXXFLAGS" - CXXFLAGS="$CXXFLAGS -fno-exceptions -fno-rtti" AC_RUN_IFELSE([AC_LANG_PROGRAM([[#include <stdio.h> #include <immintrin.h> __attribute__ ((target("default"))) int test_ssse3(int x) { return x; } @@ -214,9 +212,19 @@ __attribute__ ((target("default"))) int test_avx2(int x) { return x; } __attribute__ ((target("ssse3"))) int test_ssse3(int x) { return x; } __attribute__ ((target("sse2"))) int test_sse2(int x) { return x; } __attribute__ ((target("avx2"))) int test_avx2(int x) { return x; } +typedef long long __m128i_u __attribute__((__vector_size__(16), __may_alias__, __aligned__(1))); +typedef long long __m256i_u __attribute__((__vector_size__(32), __may_alias__, __aligned__(1))); +inline void more_testing(char* buf, int len) +{ + int i; + for (i = 0; i < (len-32); i+=32) { + __m128i in8_1, in8_2; + in8_1 = _mm_lddqu_si128((__m128i_u*)&buf[i]); + in8_2 = _mm_lddqu_si128((__m128i_u*)&buf[i + 16]); + } +} ]], [[if (test_ssse3(42) != 42 || test_sse2(42) != 42 || test_avx2(42) != 42) exit(1);]])],[CXX_OK=yes],[CXX_OK=no]) AC_LANG(C) - CXXFLAGS="$SAVE_FLAGS" if test x"$CXX_OK" = x"yes"; then # AC_MSG_RESULT() is called below. SIMD="$SIMD x86_64" |