r146700 - in /trunk/gcc: ChangeLog loop-iv.c

[bernds@gcc.gnu.org]

Author: bernds
Date: Fri Apr 24 11:01:57 2009
New Revision: 146700

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=146700
Log:
	* loop-iv.c (replace_single_def_regs): Look for REG_EQUAL notes;
	follow chains of regs with a single definition, and allow expressions
	that are function_invariant_p.


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/loop-iv.c