diff options
author | Thiago Macieira <thiago.macieira@intel.com> | 2011-12-29 22:44:16 -0200 |
---|---|---|
committer | Qt by Nokia <qt-info@nokia.com> | 2012-06-12 17:34:52 +0200 |
commit | b4525b34074665ed472cd421077a1633110f16a7 (patch) | |
tree | c8b9aa1d8e3991c02400b3b93593812a61346222 /config.tests/common/avx2/avx2.cpp | |
parent | f9c9d8aaa6684f596cf5675592782d5397e52093 (diff) |
Add configure-time checking for the SSE and AVX features on Windows
Modify configure.exe to run some configure-time tests and check if
the SSE and AVX compiler features are supported.
The tests themselves required a bit of changes to compile with
MSVC. The include in sse4_2.cpp was wrong. And for whatever reason, it
didn't like the volatile variables, which GCC, Clang and ICC have been
happy with. This should produce no effect in compilation, though: even
dead code must be syntactically correct. We're not running the output.
Change-Id: Ibe5d0904a378a7efed853c7215f88a2ddcefb1b3
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@nokia.com>
Diffstat (limited to 'config.tests/common/avx2/avx2.cpp')
-rw-r--r-- | config.tests/common/avx2/avx2.cpp | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/config.tests/common/avx2/avx2.cpp b/config.tests/common/avx2/avx2.cpp index 9e56531220..6ebe2526d2 100644 --- a/config.tests/common/avx2/avx2.cpp +++ b/config.tests/common/avx2/avx2.cpp @@ -45,11 +45,11 @@ int main(int, char**) { /* AVX */ _mm256_zeroall(); - volatile __m256i a = _mm256_setzero_si256(); + __m256i a = _mm256_setzero_si256(); /* AVX2 */ - volatile __m256i b = _mm256_and_si256(a, a); - volatile __m256i result = _mm256_add_epi8(a, b); + __m256i b = _mm256_and_si256(a, a); + __m256i result = _mm256_add_epi8(a, b); (void)result; return 0; } |