re PR lto/60449 (Merging function DECLs discards leaf attribute which causes cfg...

re PR lto/60449 (Merging function DECLs discards leaf attribute which causes cfg verifier to fail)

2014-08-20  Martin Jambor  <mjambor@suse.cz>
	    Wei Mi  <wmi@google.com>

	PR ipa/60449
	PR middle-end/61776
	* tree-ssa-operands.c (update_stmt_operands): Remove
	MODIFIED_NORETURN_CALLS.
	* tree-cfgcleanup.c (cleanup_call_ctrl_altering_flag): New func.
	(cleanup_control_flow_bb): Use cleanup_call_ctrl_altering_flag.
	(split_bb_on_noreturn_calls): Renamed from split_bbs_on_noreturn_calls.
	(cleanup_tree_cfg_1): Use split_bb_on_noreturn_calls.
	* tree-ssanames.h: Remove MODIFIED_NORETURN_CALLS.
	* gimple.h (enum gf_mask): Add GF_CALL_CTRL_ALTERING.
	(gimple_call_set_ctrl_altering): New func.
	(gimple_call_ctrl_altering_p): Ditto.
	* tree-cfg.c (gimple_call_initialize_ctrl_altering): Ditto.
	(make_blocks): Use gimple_call_initialize_ctrl_altering.
	(is_ctrl_altering_stmt): Use gimple_call_ctrl_altering_p.
	(execute_fixup_cfg): Use gimple_call_ctrl_altering_p and
	remove MODIFIED_NORETURN_CALLS.

2014-08-20  Martin Jambor  <mjambor@suse.cz>
	    Wei Mi  <wmi@google.com>

	PR ipa/60449
	PR middle-end/61776
	* testsuite/gcc.dg/lto/pr60449_1.c: New test.
	* testsuite/gcc.dg/lto/pr60449_0.c: New test.
	* testsuite/gcc.dg/pr61776.c: New test.

Co-Authored-By: Wei Mi <wmi@google.com>
From-SVN: r214233