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Re: Regression in gfortran.fortran-torture/execute/elemental.f90
- From: Andrew Pinski <pinskia at physics dot uc dot edu>
- To: Paul Thomas <paulthomas2 at wanadoo dot fr>
- Cc: gcc-patches at gcc dot gnu dot org, fortran at gcc dot gnu dot org, schwab at gcc dot gnu dot org
- Date: Wed, 13 Jul 2005 13:35:17 -0400
- Subject: Re: Regression in gfortran.fortran-torture/execute/elemental.f90
- References: <42D54E90.8080408@wanadoo.fr>
On Jul 13, 2005, at 1:25 PM, Paul Thomas wrote:
FAIL: gfortran.fortran-torture/execute/elemental.f90 execution, -O3
-fomit-frame-pointer -funroll-loops
FAIL: gfortran.fortran-torture/execute/elemental.f90 execution, -O3
-fomit-frame-pointer -funroll-all-loops -finline-functions
The problem is triggered by -funroll-loops in the second test.
Reducing the testcase a tad:
and running replacing the range 4:1:-1 with 1:4, for example, shows
that it is the negative stride combined with -funroll-loops that is
mucking us up.
There was a patch which changed what -funroll-loops turned on. Maybe
-fweb
and/or -frename-registers is causing this.
Thanks,
Andrew Pinski