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tree-ssa-threadupdate.c (determine_bb_domination_status): Always check if BB is a successor of LOOP->header and return NONDOMINATING if...

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* tree-ssa-threadupdate.c (determine_bb_domination_status): Always
	check if BB is a successor of LOOP->header and return NONDOMINATING
	if it is not, regardless of ENABLE_CHECKING.

From-SVN: r172004
This commit is contained in:
Jeff Law 2011-04-05 15:30:54 -06:00 committed by Jeff Law
parent 49fd1b338c
commit 277a9aa5a1
2 changed files with 6 additions and 2 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2011-04-05 Jeff Law <law@redhat.com>
* tree-ssa-threadupdate.c (determine_bb_domination_status): Always
check if BB is a successor of LOOP->header and return
NONDOMINATING if it is not, regardless of ENABLE_CHECKING.
2011-04-05 Steven Bosscher <steven@gcc.gnu.org>
* cprop.c (struct reg_use): Remove.

2
gcc/tree-ssa-threadupdate.c
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@ -665,7 +665,6 @@ determine_bb_domination_status (struct loop *loop, basic_block bb)
edge_iterator ei;
edge e;
#ifdef ENABLE_CHECKING
/* This function assumes BB is a successor of LOOP->header.
If that is not the case return DOMST_NONDOMINATING which
is always safe. */
@ -684,7 +683,6 @@ determine_bb_domination_status (struct loop *loop, basic_block bb)
if (!ok)
return DOMST_NONDOMINATING;
}
#endif
if (bb == loop->latch)
return DOMST_DOMINATING;