[Bug c/42968] _mm_cvtsi128_si32() should always be assigned to movd.

[hjl dot tools at gmail dot com]

------- Comment #3 from hjl dot tools at gmail dot com  2010-02-05 19:35 -------
It is due to X86_TUNE_INTER_UNIT_MOVES is off by default. I used pextrd
to avoid one more memory access since -mtune=core2 isn't faster than
default in most cases.

For this case, icc generates:

        movl      4(%esp), %eax
        ret            


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42968