Description of problem:

---
$ cat foo.c 
#include <mmintrin.h>

extern void bar(__m64);
int foo()
{
        bar(_mm_set_pi32(0x000000FF,0xFFFF00FF));
}
---

| $ g++ -c -mmmx -O2 foo.c 
| /tmp/ccttaomY.s: Assembler messages:
| /tmp/ccttaomY.s:17: Error: suffix or operands invalid for `mov'


Does not happen without '-O2' or with 'gcc' (instead of 'g++').



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

gcc-4.0.1-4.fc4


How reproducible:

100%