r256349 - in /trunk/gcc: ChangeLog testsuite/Ch...

[law@gcc.gnu.org]

Author: law
Date: Mon Jan  8 18:20:21 2018
New Revision: 256349

URL: https://gcc.gnu.org/viewcvs?rev=256349&root=gcc&view=rev
Log:
	PR rtl-optimizatin/81308
	* tree-switch-conversion.c (cfg_altered): New file scoped static.
	(process_switch): If group_case_labels makes a change, then set
	cfg_altered.
	(pass_convert_switch::execute): If a switch is converted, then
	set cfg_altered.  Return TODO_cfg_cleanup if cfg_altered is true.

	PR rtl-optimizatin/81308
	* g++.dg/pr81308-1.C: New test.
	* g++.dg/pr81308-2.C: New test.

Added:
    trunk/gcc/testsuite/g++.dg/pr81308-1.C
    trunk/gcc/testsuite/g++.dg/pr81308-2.C
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-switch-conversion.c