1 /* { dg-do compile { target i?86-*-* x86_64-*-* } } */
2 /* { dg-options "-O1 -msse2" } */
3
4 #include <xmmintrin.h>
5
ConvertFloatSSE(void * inBuff,void * outBuff,int len)6 void ConvertFloatSSE (void *inBuff, void *outBuff, int len)
7 {
8 unsigned char *inByteBuffer = reinterpret_cast < unsigned char *>(inBuff);
9 float *outFloatBuffer = reinterpret_cast < float *>(outBuff);
10
11 for (int i = 0; i < len / 4; i++)
12 {
13 __m128i register1 =
14 _mm_set_epi8 (*inByteBuffer, *(inByteBuffer + 1),
15 *(inByteBuffer + 2), 0,
16 *(inByteBuffer + 3), *(inByteBuffer + 4),
17 *(inByteBuffer + 5), 0,
18 *(inByteBuffer + 6), *(inByteBuffer + 7),
19 *(inByteBuffer + 8), 0,
20 *(inByteBuffer + 9), *(inByteBuffer + 10),
21 *(inByteBuffer + 11), 0);
22 __m128i register2 = _mm_srai_epi32 (register1, 8);
23 __m128 register3 = _mm_cvtepi32_ps (register2);
24
25 _mm_store_ps (outFloatBuffer, register3);
26 outFloatBuffer += 4;
27 inByteBuffer += 12;
28 }
29 }
30