r169123 - in /trunk/gcc: ChangeLog testsuite/Ch...

[law@gcc.gnu.org]

Author: law
Date: Sat Jan 22 04:09:44 2011
New Revision: 169123

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=169123
Log:

	PR tree-optimization/47053
	* tree-ssa-dse.c (need_eh_cleanup): New bitmap.
	(dse_optimize_stmt): Set the appropriate bit in NEED_EH_CLEANUP when
	statements are deleted.
	(tree_ssa_dse): Allocate & free NEED_EH_CLEANUP.  If NEED_EH_CLEANUP
	is nonempty, then purge dead edges and cleanup the CFG.

	PR tree-optimization/47053
	* g++.dg/pr47053.C: New test.
	

Added:
    trunk/gcc/testsuite/g++.dg/pr47053.C
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-dse.c