On AMD Athlon64 4800+ using gcc-Version 4.3.0 20070716
(x86_64-unknown-linux-gnu) with aermod of the Polyhedron benchmark suite:
http://www.polyhedron.co.uk/pb05/polyhedron_benchmark_suite.html

gfortran -fprofile-generate -march=opteron -ffast-math -funroll-loops
-ftree-loop-linear -ftree-vectorize -O3 ...

./a.out

gfortran -fprofile-use -march=opteron -ffast-math -funroll-loops
-ftree-loop-linear -ftree-vectorize -O3 ....

./a.out

This was still working on 12 July 2007; thus there must be a regression between
2007-07-12-r126572 and 2007-07-16-r126682.


The problem occurs with:
ac: Segmentation fault (core dumped)
aermod: Endless loop
doduc: Endless loop


-- 
           Summary: Profile use -> created binary needs more than O(300)
                    longer
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Keywords: wrong-code
          Severity: normal
          Priority: P3
         Component: middle-end
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: burnus at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32779

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