[Bug middle-end/17278] [4.0 Regression] 8% C++ compile-time regression in comparison with 3.4.1 at -O1 optimization level

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2005-01-27 16:33 -------
Subject: Bug 17278

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	steven@gcc.gnu.org	2005-01-27 16:32:16

Modified files:
	gcc            : ChangeLog opts.c tree-ssa-dom.c 

Log message:
	PR middle-end/17278
	* opts.c (decode_options): Move flag_thread_jumps from -O1 and
	higher to -O2 and higher.  Likewise for tree PRE.
	* tree-ssa-dom.c (tree_ssa_dominator_optimize): Only iterate at -O2
	and better.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.7306&r2=2.7307
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/opts.c.diff?cvsroot=gcc&r1=1.90&r2=1.91
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-ssa-dom.c.diff?cvsroot=gcc&r1=2.88&r2=2.89



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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17278