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[Bug rtl-optimization/32300] [4.3 Regression] ICE with -O2 -fsee
- From: "jakub at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 4 Sep 2007 23:31:24 -0000
- Subject: [Bug rtl-optimization/32300] [4.3 Regression] ICE with -O2 -fsee
- References: <bug-32300-8535@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #11 from jakub at gcc dot gnu dot org 2007-09-04 23:31 -------
Subject: Bug 32300
Author: jakub
Date: Tue Sep 4 23:31:11 2007
New Revision: 128108
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=128108
Log:
PR rtl-optimization/32300
* see.c (see_copy_insn): New function.
(see_def_extension_not_merged, see_merge_one_use_extension,
see_merge_one_def_extension): Use it. Avoid changing
PREV_INSN/NEXT_INSN chains directly, insted emit insns
into sequences. Call df_insn_delete on temporary insns
that won't be emitted into the insn stream.
(rest_of_handle_see): Turn off DF_DEFER_INSN_RESCAN
and run df_process_deferred_rescans () before run_fast_dce.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/see.c
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32300