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tree-ssa-uncprop.c (associate_equivalences_with_edges): Avoid entering the weaker equivalence recording.

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2008-09-11  Richard Guenther  <rguenther@suse.de>

	* tree-ssa-uncprop.c (associate_equivalences_with_edges): Avoid
	entering the weaker equivalence recording.

	* tree-ssa-phiprop.c (propagate_with_phi): Fix tuplification.

From-SVN: r140300
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Richard Guenther 2008-09-11 21:48:11 +00:00 committed by Richard Biener
parent d96d5d5415
commit e49a540c12
3 changed files with 13 additions and 6 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2008-09-11 Richard Guenther <rguenther@suse.de>
* tree-ssa-uncprop.c (associate_equivalences_with_edges): Avoid
entering the weaker equivalence recording.
* tree-ssa-phiprop.c (propagate_with_phi): Fix tuplification.
2008-09-11 Jeff Law <law@redhat.com>
* reload1.c (alter_reg): Undo the BYTE_BIG_ENDIAN correction performed

2
gcc/tree-ssa-phiprop.c
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@ -247,7 +247,7 @@ propagate_with_phi (basic_block bb, gimple phi, struct phiprop_d *phivn,
|| phivn[SSA_NAME_VERSION (arg)].value == NULL_TREE))
{
gimple def_stmt = SSA_NAME_DEF_STMT (arg);
if (gimple_code (def_stmt) != GIMPLE_ASSIGN)
if (!gimple_assign_single_p (def_stmt))
return false;
arg = gimple_assign_rhs1 (def_stmt);
}

10
gcc/tree-ssa-uncprop.c
View File

@ -137,11 +137,11 @@ associate_equivalences_with_edges (void)
}
}
if (TREE_CODE (op0) == SSA_NAME
&& !SSA_NAME_OCCURS_IN_ABNORMAL_PHI (op0)
&& (is_gimple_min_invariant (op1)
|| (TREE_CODE (op1) == SSA_NAME
&& !SSA_NAME_OCCURS_IN_ABNORMAL_PHI (op1))))
else if (TREE_CODE (op0) == SSA_NAME
&& !SSA_NAME_OCCURS_IN_ABNORMAL_PHI (op0)
&& (is_gimple_min_invariant (op1)
|| (TREE_CODE (op1) == SSA_NAME
&& !SSA_NAME_OCCURS_IN_ABNORMAL_PHI (op1))))
{
/* For IEEE, -0.0 == 0.0, so we don't necessarily know
the sign of a variable compared against zero. If