Description of problem:
Unexpected behaviour of the function _mm_cvtpu16_ps defined in /usr/lib/gcc/x86_64-redhat-linux/4.5.1/include/xmmintrin.h

Version-Release number of selected component (if applicable):
4.5.1

How reproducible:
Write a test program.

Steps to Reproduce:
1. Define a __m64 variable containing four shorts: 1,2,3,4.
2. Load it into a __m128 variable using _mm_cvtpu16_ps.
  
Actual results:
3.0, 4.0, 1.0, 2.0

Expected results:
1.0, 2.0, 3.0, 4.0

Additional info:
The last line of the _mm_cvtpu16_ps function should be:
return (__m128) __builtin_ia32_movlhps (__rb, __ra);
instead if:
return (__m128) __builtin_ia32_movlhps (__ra, __rb);