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Revert " * tree-ssa-dom.c (cprop_into_successor_phis): Also propagate"

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This reverts commit 592dc887e7bd7b2637b9277c3bd28f41a9487b17.

Conflicts:
	gcc/ChangeLog

From-SVN: r202553
This commit is contained in:
Jeff Law 2013-09-13 00:04:32 -06:00 committed by Jeff Law
parent cece834139
commit 823b5d6bbc
2 changed files with 9 additions and 24 deletions
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9
gcc/ChangeLog
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@ -1,3 +1,12 @@
2013-09-10 Jeff Law <law@redhat.com>
PR middle-end/58387
Revert:
2013-09-06 Jeff Law <law@redhat.com>
* tree-ssa-dom.c (cprop_into_successor_phis): Also propagate
edge implied equivalences into successor phis.
2013-09-12 DJ Delorie <dj@redhat.com>
* config/rl78/rl78-virt.md: Change from | to \; for asm line

24
gcc/tree-ssa-dom.c
View File

@ -1642,28 +1642,6 @@ cprop_into_successor_phis (basic_block bb)
if (gsi_end_p (gsi))
continue;
/* We may have an equivalence associated with this edge. While
we can not propagate it into non-dominated blocks, we can
propagate them into PHIs in non-dominated blocks. */
/* Push the unwind marker so we can reset the const and copies
table back to its original state after processing this edge. */
const_and_copies_stack.safe_push (NULL_TREE);
/* Extract and record any simple NAME = VALUE equivalences.
Don't bother with [01] = COND equivalences, they're not useful
here. */
struct edge_info *edge_info = (struct edge_info *) e->aux;
if (edge_info)
{
tree lhs = edge_info->lhs;
tree rhs = edge_info->rhs;
if (lhs && TREE_CODE (lhs) == SSA_NAME)
record_const_or_copy (lhs, rhs);
}
indx = e->dest_idx;
for ( ; !gsi_end_p (gsi); gsi_next (&gsi))
{
@ -1689,8 +1667,6 @@ cprop_into_successor_phis (basic_block bb)
&& may_propagate_copy (orig_val, new_val))
propagate_value (orig_p, new_val);
}
restore_vars_to_original_value ();
}
}