Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/g++.dg/other/i386-4.C @ 131:84e7813d76e9
gcc-8.2
author | mir3636 |
---|---|
date | Thu, 25 Oct 2018 07:37:49 +0900 |
parents | 04ced10e8804 |
children |
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/* { dg-do compile { target i?86-*-* x86_64-*-* } } */ /* { dg-options "-O1 -msse2" } */ #include <xmmintrin.h> void ConvertFloatSSE (void *inBuff, void *outBuff, int len) { unsigned char *inByteBuffer = reinterpret_cast < unsigned char *>(inBuff); float *outFloatBuffer = reinterpret_cast < float *>(outBuff); for (int i = 0; i < len / 4; i++) { __m128i register1 = _mm_set_epi8 (*inByteBuffer, *(inByteBuffer + 1), *(inByteBuffer + 2), 0, *(inByteBuffer + 3), *(inByteBuffer + 4), *(inByteBuffer + 5), 0, *(inByteBuffer + 6), *(inByteBuffer + 7), *(inByteBuffer + 8), 0, *(inByteBuffer + 9), *(inByteBuffer + 10), *(inByteBuffer + 11), 0); __m128i register2 = _mm_srai_epi32 (register1, 8); __m128 register3 = _mm_cvtepi32_ps (register2); _mm_store_ps (outFloatBuffer, register3); outFloatBuffer += 4; inByteBuffer += 12; } }