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[Bug c/49207] Instruction scheduling error in GCC mips cross-compiler
- From: "hanib at ece dot ubc.ca" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Sat, 28 May 2011 21:21:44 +0000
- Subject: [Bug c/49207] Instruction scheduling error in GCC mips cross-compiler
- Auto-submitted: auto-generated
- References: <bug-49207-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49207
--- Comment #4 from hanib at ece dot ubc.ca 2011-05-28 21:21:40 UTC ---
(In reply to comment #3)
> I think you have an aliasing problem in your code.
The code I am compiling is the Perlbench benchmark from SPEC-CPU2006. If I
compile the code for an Intel machine using -O2 there is no problem. This
problem only appears when I use the GCC MIPS cross-compiler with the -O2
switch. I also traced through the code and the sequence of these two
instructions should be reversed.