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tree-ssa-ccp.c (valueize_op_1): Always allow valueizing default-defs. 

2015-02-02  Richard Biener  <rguenther@suse.de>

	* tree-ssa-ccp.c (valueize_op_1): Always allow valueizing default-defs.
	* tree-vrp.c (vrp_valueize_1): Likewise.

From-SVN: r220346
This commit is contained in:
Richard Biener 2015-02-02 15:01:28 +00:00 committed by Richard Biener
parent 56d1b78a4a
commit 7dd1f7ace3
3 changed files with 9 additions and 2 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2015-02-02 Richard Biener <rguenther@suse.de>
* tree-ssa-ccp.c (valueize_op_1): Always allow valueizing default-defs.
* tree-vrp.c (vrp_valueize_1): Likewise.
2015-02-02 Alan Modra <amodra@gmail.com>
* config/rs6000/rs6000.c (rs6000_call_aix): Use unspec rather

3
gcc/tree-ssa-ccp.c
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@ -1145,7 +1145,8 @@ valueize_op_1 (tree op)
this SSA edge as the SSA propagator does not necessarily
re-visit the use. */
gimple def_stmt = SSA_NAME_DEF_STMT (op);
if (prop_simulate_again_p (def_stmt))
if (!gimple_nop_p (def_stmt)
&& prop_simulate_again_p (def_stmt))
return NULL_TREE;
tree tem = get_constant_value (op);
if (tem)

3
gcc/tree-vrp.c
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@ -7096,7 +7096,8 @@ vrp_valueize_1 (tree name)
this SSA edge as the SSA propagator does not necessarily
re-visit the use. */
gimple def_stmt = SSA_NAME_DEF_STMT (name);
if (prop_simulate_again_p (def_stmt))
if (!gimple_nop_p (def_stmt)
&& prop_simulate_again_p (def_stmt))
return NULL_TREE;
value_range_t *vr = get_value_range (name);
if (range_int_cst_singleton_p (vr))