[Bug rtl-optimization/19680] sub-optimial register allocation with sse

tbptbp at gmail dot com gcc-bugzilla@gcc.gnu.org
Mon Jan 31 23:43:00 GMT 2005


------- Additional Comments From tbptbp at gmail dot com  2005-01-31 23:42 -------
d-19680-1 + d-19680-3 isn't as good, 14.9fps, as some silly stack movements are
induced; ie:

  40265f:       0f 29 04 24             movaps %xmm0,(%esp)
  402663:       0f 57 c0                xorps  %xmm0,%xmm0
  402666:       0f c2 d0 01             cmpltps %xmm0,%xmm2
  40266a:       0f 56 14 24             orps   (%esp),%xmm2


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19680



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