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tree-cfg.c (tree_try_redirect_by_replacing_jump): Speed up by restricting to the case with two outgoing edges.

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* tree-cfg.c (tree_try_redirect_by_replacing_jump): Speed up
	by restricting to the case with two outgoing edges.

From-SVN: r91098
This commit is contained in:
Kazu Hirata 2004-11-23 19:34:35 +00:00 committed by Kazu Hirata
parent 6b66c71882
commit 07b43a87c0
2 changed files with 9 additions and 8 deletions
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3
gcc/ChangeLog
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@ -15,6 +15,9 @@
* tree.h (PHI_ARG_EDGE): Redefine in terms of EDGE_PRED.
(phi_arg_d): Remove e.
* tree-cfg.c (tree_try_redirect_by_replacing_jump): Speed up
by restricting to the case with two outgoing edges.
2004-11-23 Andreas Krebbel <krebbel1@de.ibm.com>
* config/s390/s390.c (s390_backchain_string): Removed.

14
gcc/tree-cfg.c
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@ -4247,17 +4247,15 @@ static edge
tree_try_redirect_by_replacing_jump (edge e, basic_block target)
{
basic_block src = e->src;
edge tmp;
block_stmt_iterator b;
tree stmt;
edge_iterator ei;
/* Verify that all targets will be TARGET. */
FOR_EACH_EDGE (tmp, ei, src->succs)
if (tmp->dest != target && tmp != e)
break;
if (tmp)
/* We can replace or remove a complex jump only when we have exactly
two edges. */
if (EDGE_COUNT (src->succs) != 2
/* Verify that all targets will be TARGET. Specifically, the
edge that is not E must also go to TARGET. */
|| EDGE_SUCC (src, EDGE_SUCC (src, 0) == e)->dest != target)
return NULL;
b = bsi_last (src);