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[Bug rtl-optimization/42592] really bad register allocation for x86
- From: "andi-gcc at firstfloor dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 3 Jan 2010 15:40:13 -0000
- Subject: [Bug rtl-optimization/42592] really bad register allocation for x86
- References: <bug-42592-7834@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #2 from andi-gcc at firstfloor dot org 2010-01-03 15:40 -------
An obvious improvement would be to use the non callee clobbered registers
as temporal storage, instead of putting into registers that just get spilled
again. I think one of the other compilers in the comparison
did that but I can't find the example right now.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42592