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[Bug middle-end/17503] quadratic behaviour in invalid_mode_change_p
- From: "cvs-commit at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 24 Sep 2004 19:47:19 -0000
- Subject: [Bug middle-end/17503] quadratic behaviour in invalid_mode_change_p
- References: <20040915165050.17503.drow@gcc.gnu.org>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From cvs-commit at gcc dot gnu dot org 2004-09-24 19:47 -------
Subject: Bug 17503
CVSROOT: /cvs/gcc
Module name: gcc
Changes by: rth@gcc.gnu.org 2004-09-24 19:47:06
Modified files:
gcc : ChangeLog combine.c flow.c regclass.c regs.h
rtl.h
Log message:
PR rtl-opt/17503
* regclass.c (subregs_of_mode): Turn into an htab. Make static.
(som_hash, som_eq): New.
(init_subregs_of_mode, record_subregs_of_mode): New.
(cannot_change_mode_set_regs): Rewrite for htab implementation.
(invalid_mode_change_p): Likewise.
* combine.c (gen_lowpart_for_combine): Use record_subregs_of_mode.
* flow.c (mark_used_regs): Likewise.
(life_analysis): Use init_subregs_of_mode.
* regs.h (subregs_of_mode): Remove.
* rtl.h (init_subregs_of_mode, record_subregs_of_mode): Declare.
Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.5606&r2=2.5607
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/combine.c.diff?cvsroot=gcc&r1=1.454&r2=1.455
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/flow.c.diff?cvsroot=gcc&r1=1.597&r2=1.598
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/regclass.c.diff?cvsroot=gcc&r1=1.197&r2=1.198
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/regs.h.diff?cvsroot=gcc&r1=1.35&r2=1.36
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/rtl.h.diff?cvsroot=gcc&r1=1.509&r2=1.510
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17503