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[Bug rtl-optimization/19680] sub-optimial register allocation with sse
- From: "tbptbp at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 31 Jan 2005 23:42:52 -0000
- Subject: [Bug rtl-optimization/19680] sub-optimial register allocation with sse
- References: <20050128233416.19680.tbptbp@gmail.com>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- 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