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

[ebotcazou@gcc.gnu.org]

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	ebotcazou@gcc.gnu.org	2003-10-25 12:55:18

Modified files:
	gcc            : ChangeLog reg-stack.c 
	gcc/testsuite  : ChangeLog 
Added files:
	gcc/testsuite/g++.dg/opt: reg-stack3.C 

Log message:
	PR target/12712
	* reg-stack.c (convert_regs_1): Create an arbitrary input stack
	if the block has no predecessors.
	(convert_regs_2): Document the problem with successors whose
	only predecessor is the block to be processed.
	(convert_regs): Don't create the arbitrary input stack here.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.1548&r2=2.1549
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/reg-stack.c.diff?cvsroot=gcc&r1=1.135&r2=1.136
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&r1=1.3144&r2=1.3145
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/opt/reg-stack3.C.diff?cvsroot=gcc&r1=NONE&r2=1.1