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[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: 21 Mar 2006 21:35:20 -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 #12 from rakdver at gcc dot gnu dot org 2006-03-21 21:35 -------
(In reply to comment #11)
> 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.
While I still consider this desirable, it is somewhat difficult to achieve
(it requires big changes to iv_analyze_... routines, and I am not even quite
sure the gain would be worth the cost).
Replacing the assert in analyze_iv_to_split_insn with return NULL should be
safe, in the meantime.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25569