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tree-ssa-dom.c (record_equivalences_from_phis): Remove an "if" whose condition is always true. 

* tree-ssa-dom.c (record_equivalences_from_phis): Remove an
	"if" whose condition is always true.

From-SVN: r91676
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Kazu Hirata 2004-12-03 07:38:39 +00:00 committed by Kazu Hirata
parent 7bd3a49330
commit a18428f344
2 changed files with 16 additions and 16 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2004-12-03 Kazu Hirata <kazu@cs.umass.edu>
* tree-ssa-dom.c (record_equivalences_from_phis): Remove an
"if" whose condition is always true.
2004-12-02 Stan Shebs <shebs@apple.com>
* config/rs6000/rs6000.c (rs6000_override_options): Make 64-bit

27
gcc/tree-ssa-dom.c
View File

@ -1177,23 +1177,18 @@ record_equivalences_from_phis (basic_block bb)
{
tree t = PHI_ARG_DEF (phi, i);
if (TREE_CODE (t) == SSA_NAME || is_gimple_min_invariant (t))
{
/* Ignore alternatives which are the same as our LHS. */
if (operand_equal_for_phi_arg_p (lhs, t))
continue;
/* Ignore alternatives which are the same as our LHS. */
if (operand_equal_for_phi_arg_p (lhs, t))
continue;
/* If we have not processed an alternative yet, then set
RHS to this alternative. */
if (rhs == NULL)
rhs = t;
/* If we have processed an alternative (stored in RHS), then
see if it is equal to this one. If it isn't, then stop
the search. */
else if (! operand_equal_for_phi_arg_p (rhs, t))
break;
}
else
/* If we have not processed an alternative yet, then set
RHS to this alternative. */
if (rhs == NULL)
rhs = t;
/* If we have processed an alternative (stored in RHS), then
see if it is equal to this one. If it isn't, then stop
the search. */
else if (! operand_equal_for_phi_arg_p (rhs, t))
break;
}