gcc/gcc ChangeLog reg-stack.c testsuite/Change ...

[ebotcazou@gcc.gnu.org]

CVSROOT:	/cvs/gcc
Module name:	gcc
Branch: 	gcc-3_3-branch
Changes by:	ebotcazou@gcc.gnu.org	2003-12-01 08:10:18

Modified files:
	gcc            : ChangeLog reg-stack.c 
	gcc/testsuite  : ChangeLog 
Added files:
	gcc/testsuite/g++.dg/opt: reg-stack4.C 

Log message:
	Backport from mainline:
	
	2003-11-27  Eric Botcazou  <ebotcazou@libertysurf.fr>
	
	PR target/12900
	* reg-stack (move_for_stack_reg): New prototype.  Return
	whether a control flow insn was deleted.
	(subst_stack_regs_pat): Likewise, using the information provided
	by move_for_stack_reg.
	(subst_stack_regs): Likewise, using the information provided
	by subst_stack_regs_pat.
	(convert_regs_1): Record whether a control flow insn was deleted,
	using the information provided by subst_stack_regs.  Purge dead
	edges only if a control flow insn was deleted.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-3_3-branch&r1=1.16114.2.811&r2=1.16114.2.812
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/reg-stack.c.diff?cvsroot=gcc&only_with_tag=gcc-3_3-branch&r1=1.117.2.5&r2=1.117.2.6
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-3_3-branch&r1=1.2261.2.318&r2=1.2261.2.319
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/opt/reg-stack4.C.diff?cvsroot=gcc&only_with_tag=gcc-3_3-branch&r1=NONE&r2=1.1.2.1