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swr/rast: _mm*_undefined_* implementations for gcc<4.9

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Define these in terms of setzero for ancient gcc versions which don't
have the undefined intrinsics.

Cc: mesa-stable@lists.freedesktop.org

Reviewed-by: Bruce Cherniak <bruce.cherniak@intel.com>
This commit is contained in:
Tim Rowley 2017-07-06 10:28:53 -05:00
parent a6893a50c8
commit f0a22956be
1 changed files with 6 additions and 0 deletions
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6
src/gallium/drivers/swr/rasterizer/common/os.h
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@ -173,6 +173,12 @@ void _mm256_storeu2_m128i(__m128i *hi, __m128i *lo, __m256i a)
_mm_storeu_si128((__m128i*)lo, _mm256_castsi256_si128(a));
_mm_storeu_si128((__m128i*)hi, _mm256_extractf128_si256(a, 0x1));
}
// gcc prior to 4.9 doesn't have _mm*_undefined_*
#if (__GNUC__) && (GCC_VERSION < 409000)
#define _mm_undefined_si128 _mm_setzero_si128
#define _mm256_undefined_ps _mm256_setzero_ps
#endif
#endif
inline