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[Bug fortran/30388] gfortran42 is slower than g77 3.4 about 10%
- From: "jvdelisle at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 17 Dec 2007 06:10:41 -0000
- Subject: [Bug fortran/30388] gfortran42 is slower than g77 3.4 about 10%
- References: <bug-30388-11045@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #12 from jvdelisle at gcc dot gnu dot org 2007-12-17 06:10 -------
Here is a twist on the test case
gfc -O2 -m64 -ffast-math -funroll-all-loops -fipa-pta -fivopts poisson.f
poisson.f:111.72:
pause
1
Warning: Deleted feature: PAUSE statement at (1)
poisson.f: In function ?jacobi?:
poisson.f:233: error: stmt (0x2aaaaeb4f300) marked modified after optimization
pass:
D.1063_9 = *nn_8(D);
poisson.f:233: internal compiler error: verify_ssa failed
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--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30388