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[Bug rtl-optimization/60969] [4.9/4.10 Regression] ICE in output_129 in MMXMOV of mode MODE_SF for march=pentium4
- From: "hjl.tools at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Wed, 14 May 2014 19:49:56 +0000
- Subject: [Bug rtl-optimization/60969] [4.9/4.10 Regression] ICE in output_129 in MMXMOV of mode MODE_SF for march=pentium4
- Auto-submitted: auto-generated
- References: <bug-60969-4 at http dot gcc dot gnu dot org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60969
--- Comment #17 from H.J. Lu <hjl.tools at gmail dot com> ---
As long as both MMX and X87 registers are available to register allocator,
they may be used at the same time even if MMX usage is disparaged. Can we
disable MMX registers when x87 registers used on a per-function basis?