From: Alexandre Oliva <aoliva@redhat.com>
Date: Fri, 22 Mar 2002 19:54:34 +0000 (+0000)
Subject: flow.c (calculate_global_regs_live): Clear aux fields of ENTRY and EXIT.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=70e0ccd0a04d6d517298264ad94822169d3958b1;p=gcc.git

flow.c (calculate_global_regs_live): Clear aux fields of ENTRY and EXIT.

* flow.c (calculate_global_regs_live): Clear aux fields of
ENTRY and EXIT.

From-SVN: r51183
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index ce9c9b3cbd8..f4e057ac16b 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2002-03-22  Alexandre Oliva  <aoliva@redhat.com>
+
+	* flow.c (calculate_global_regs_live): Clear aux fields of
+	ENTRY and EXIT.
+
 2002-03-22  Jakub Jelinek  <jakub@redhat.com>
 
 	* config/v850/v850.c (v850_reorg): Only call alter_subreg on
diff --git a/gcc/flow.c b/gcc/flow.c
index 71ed939da63..61008e630e0 100644
--- a/gcc/flow.c
+++ b/gcc/flow.c
@@ -1113,6 +1113,11 @@ calculate_global_regs_live (blocks_in, blocks_out, flags)
 	}
     }
 
+  /* We clean aux when we remove the initially-enqueued bbs, but we
+     don't enqueue ENTRY and EXIT initially, so clean them upfront and
+     unconditionally.  */
+  ENTRY_BLOCK_PTR->aux = EXIT_BLOCK_PTR->aux = NULL;
+
   if (blocks_out)
     sbitmap_zero (blocks_out);