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tree-cfg.c (remove_forwarder_block_with_phi): Look at the first label to see if it is a nonlocal label.

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* tree-cfg.c (remove_forwarder_block_with_phi): Look at the
	first label to see if it is a nonlocal label.

From-SVN: r94067
This commit is contained in:
Kazu Hirata 2005-01-22 16:13:40 +00:00 committed by Kazu Hirata
parent 0dd973dd97
commit 28773f15a8
2 changed files with 9 additions and 11 deletions
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3
gcc/ChangeLog
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@ -6,6 +6,9 @@
config/sparc/freebsd.h, config/sparc/netbsd-elf.h,
config/sparc/sol2.h: Update copyright.
* tree-cfg.c (remove_forwarder_block_with_phi): Look at the
first label to see if it is a nonlocal label.
2005-01-22 David Edelsohn <edelsohn@gnu.org>
Andrew Pinski <pinskia@physics.uc.edu>

17
gcc/tree-cfg.c
View File

@ -4130,8 +4130,8 @@ remove_forwarder_block_with_phi (basic_block bb)
{
edge succ = EDGE_SUCC (bb, 0);
basic_block dest = succ->dest;
tree label;
basic_block dombb, domdest, dom;
block_stmt_iterator bsi;
/* We check for infinite loops already in tree_forwarder_block_p.
However it may happen that the infinite loop is created
@ -4141,16 +4141,11 @@ remove_forwarder_block_with_phi (basic_block bb)
/* If the destination block consists of a nonlocal label, do not
merge it. */
for (bsi = bsi_start (dest); !bsi_end_p (bsi); bsi_next (&bsi))
{
tree stmt = bsi_stmt (bsi);
if (TREE_CODE (stmt) != LABEL_EXPR)
break;
if (DECL_NONLOCAL (LABEL_EXPR_LABEL (stmt)))
return;
}
label = first_stmt (dest);
if (label
&& TREE_CODE (label) == LABEL_EXPR
&& DECL_NONLOCAL (LABEL_EXPR_LABEL (label)))
return;
/* Redirect each incoming edge to BB to DEST. */
while (EDGE_COUNT (bb->preds) > 0)