[gcc r14-186] Avoid repeated forwarder_block_p calls in CFG cleanup

[Richard Biener <rguenth@gcc.gnu.org>]

https://gcc.gnu.org/g:28c06d0ed134d7d325da101e7e4230067cebeab3

commit r14-186-g28c06d0ed134d7d325da101e7e4230067cebeab3
Author: Richard Biener <rguenther@suse.de>
Date:   Wed Apr 19 11:24:00 2023 +0200

    Avoid repeated forwarder_block_p calls in CFG cleanup
    
    CFG cleanup maintains BB_FORWARDER_BLOCK and uses FORWARDER_BLOCK_P
    to check that apart from two places which use forwarder_block_p
    in outgoing_edges_match alongside many BB_FORWARDER_BLOCK uses.
    
    The following adjusts those.
    
            * cfgcleanup.cc (outgoing_edges_match): Use FORWARDER_BLOCK_P.

Diff:
---
 gcc/cfgcleanup.cc | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/gcc/cfgcleanup.cc b/gcc/cfgcleanup.cc
index 78f59e99653..5f1aa29c89d 100644
--- a/gcc/cfgcleanup.cc
+++ b/gcc/cfgcleanup.cc
@@ -1861,9 +1861,9 @@ outgoing_edges_match (int mode, basic_block bb1, basic_block bb2)
   /* fallthru edges must be forwarded to the same destination.  */
   if (fallthru1)
     {
-      basic_block d1 = (forwarder_block_p (fallthru1->dest)
+      basic_block d1 = (FORWARDER_BLOCK_P (fallthru1->dest)
 			? single_succ (fallthru1->dest): fallthru1->dest);
-      basic_block d2 = (forwarder_block_p (fallthru2->dest)
+      basic_block d2 = (FORWARDER_BLOCK_P (fallthru2->dest)
 			? single_succ (fallthru2->dest): fallthru2->dest);
 
       if (d1 != d2)