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[Bug target/34067] [4.3 regression] gfortran.dg/char_cshift_2.f90 fails with -O3 -funroll-loops fails on Intel Darwin
- From: "paolo dot bonzini at lu dot unisi dot ch" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 13 Nov 2007 11:43:22 -0000
- Subject: [Bug target/34067] [4.3 regression] gfortran.dg/char_cshift_2.f90 fails with -O3 -funroll-loops fails on Intel Darwin
- References: <bug-34067-12313@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #15 from paolo dot bonzini at lu dot unisi dot ch 2007-11-13 11:43 -------
Subject: Re: [4.3 regression] gfortran.dg/char_cshift_2.f90
fails with -O3 -funroll-loops fails on Intel Darwin
> bzip2 tar archive with four directories r42_O1, r42_O2, r43_O1, and r43_O2
> containing the result of -fdump-tree-all and the assembly codes for the
> different revisions and options (see comment #2).
Please use -fdump-rtl-all since fwprop is not a tree pass. :-)
Also, please check if the bug appears disappears with
-O2 -fno-forward-propagate -funroll-loops
versus
-O2 -funroll-loops
in both 130042 and 130043. If the -fno-forward-propagate would make a
difference, this would be a great way to narrow the bug.
Paolo
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34067