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tree-phinodes.c (remove_phi_arg_num): Don't remove PHIs without any PHI arguments left.

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* tree-phinodes.c (remove_phi_arg_num): Don't remove PHIs
	without any PHI arguments left.  Make sure the argument that
	we're supposed to remove exists at all.

From-SVN: r89689
This commit is contained in:
Steven Bosscher 2004-10-27 17:14:19 +00:00
parent a559b61bf7
commit 40b554a31c
2 changed files with 9 additions and 6 deletions
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8
gcc/ChangeLog
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@ -1,3 +1,9 @@
2004-10-27 Steven Bosscher <stevenb@suse.de>
* tree-phinodes.c (remove_phi_arg_num): Don't remove PHIs
without any PHI arguments left. Make sure the argument that
we're supposed to remove exists at all.
2004-10-27 Paul Brook <paul@codesourcery.com>
* configure.ac: Don't test for [build] __cxa_atexit when building a
@ -161,7 +167,7 @@
2004-10-26 Fariborz Jahanian <fjahanian@apple.com>
* config/rs6000/rs6000.md (andsi3_internal8): Set CR when splitting
* config/rs6000/rs6000.md (andsi3_internal8): Set CR when splitting
into rotlsi3.
2004-10-26 Kazu Hirata <kazu@cs.umass.edu>

7
gcc/tree-phinodes.c
View file

@ -407,6 +407,8 @@ remove_phi_arg_num (tree phi, int i)
{
int num_elem = PHI_NUM_ARGS (phi);
gcc_assert (i < num_elem);
/* If we are not at the last element, switch the last element
with the element we want to delete. */
if (i != num_elem - 1)
@ -421,11 +423,6 @@ remove_phi_arg_num (tree phi, int i)
PHI_ARG_EDGE (phi, num_elem - 1) = NULL;
PHI_ARG_NONZERO (phi, num_elem - 1) = false;
PHI_NUM_ARGS (phi)--;
/* If we removed the last PHI argument, then go ahead and
remove the PHI node. */
if (PHI_NUM_ARGS (phi) == 0)
remove_phi_node (phi, NULL, bb_for_stmt (phi));
}
/* Remove PHI node PHI from basic block BB. If PREV is non-NULL, it is