[Bug middle-end/33794] New: [Regression 4.3.0] Wrong code w/ -m32 -ffast-math -march=opteron

["burnus at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

This is on x86_64-unknown-linux-gnu (AMD Athlon64 X2 4800+)
with     4.3.0 20071016 [trunk revision 129377].
Working: 4.3.0 20071015 [trunk revision 129311].

induct.f90 is part of the polyhedron test suite.

For
   gfortran -m32 -march=opteron -ffast-math -O1 induct.f90
the program ("induct") immediately aborts with:
  "bad mutual inductance between quad 1 and the wand transmit coil, abort."

The program works with "-m64" and with "-m32 -mfpmath=sse".

The Polyhedron test case can be obtained from:
http://www.polyhedron.co.uk/MFL6VW74649


-- 
           Summary: [Regression 4.3.0] Wrong code w/ -m32 -ffast-math -
                    march=opteron
           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=33794