[Bug middle-end/37364] [4.4 Regression] IRA generates ineffient code

[hjl dot tools at gmail dot com]

------- Comment #1 from hjl dot tools at gmail dot com  2008-09-04 16:02 -------
"-O2 -march=core2 -fno-ira -fno-regmove" generates

        movq    x(%rip), %mm0
        paddd   y(%rip), %mm0
        movq    %mm0, -8(%rsp)
        movq    -8(%rsp), %rax

It seems that regmove isn't effective for IRA.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37364