r195648 - in /branches/gcc-4_7-branch/gcc: Chan...

[jakub@gcc.gnu.org]

Author: jakub
Date: Fri Feb  1 13:57:46 2013
New Revision: 195648

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=195648
Log:
	Backported from mainline
	2012-11-13  Jakub Jelinek  <jakub@redhat.com>

	PR rtl-optimization/54127
	* cfgrtl.c (force_nonfallthru_and_redirect): When redirecting
	asm goto labels from BB_HEAD (e->dest) to target bb, decrement
	LABEL_NUSES of BB_HEAD (e->dest) and increment LABEL_NUSES of
	BB_HEAD (target) appropriately and adjust JUMP_LABEL and/or
	REG_LABEL_TARGET and REG_LABEL_OPERAND.

	* gcc.dg/torture/pr54127.c: New test.

Added:
    branches/gcc-4_7-branch/gcc/testsuite/gcc.dg/torture/pr54127.c
Modified:
    branches/gcc-4_7-branch/gcc/ChangeLog
    branches/gcc-4_7-branch/gcc/cfgrtl.c
    branches/gcc-4_7-branch/gcc/testsuite/ChangeLog