This is the mail archive of the
gcc-bugs@gcc.gnu.org
mailing list for the GCC project.
[Bug rtl-optimization/25569] [4.2 Regression] FAIL: gfortran.dg/g77/20010610.f -O3 -fomit-frame-pointer -funroll-loops
- From: "rakdver at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 14 Mar 2006 01:10:07 -0000
- Subject: [Bug rtl-optimization/25569] [4.2 Regression] FAIL: gfortran.dg/g77/20010610.f -O3 -fomit-frame-pointer -funroll-loops
- References: <bug-25569-276@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #11 from rakdver at gcc dot gnu dot org 2006-03-14 01:10 -------
>From reading loop-unroll.c, I believe that we could safely have
>analyze_iv_to_split_insn return NULL instead of aborting when
>iv_analyze_result returns false.
>However, I wouldn't want to make such a change without first
>giving you the opportunity to look at the code and indicate
>if such a change is just papering over a problem elsewhere in
>the IV code.
This is definitely a bug in loop-iv.c -- once biv_p (SET_DEST (single_set
(insn))) returns true, iv_analyze_result must succeed as well.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25569