re PR tree-optimization/43379 (ICE: error: SSA_NAME_OCCURS_IN_ABNORMAL_PHI…

re PR tree-optimization/43379 (ICE: error: SSA_NAME_OCCURS_IN_ABNORMAL_PHI should be set with -O2 -ftracer)

2010-03-16  Richard Guenther  <rguenther@suse.de>

	PR middle-end/43379
	* tree-cfg.c (gimple_merge_blocks): When propagating virtual
	PHI operands make sure to merge SSA_NAME_OCCURS_IN_ABNORMAL_PHI
	properly.

	* gcc.dg/pr43379.c: New testcase.

From-SVN: r157478

gcc/ChangeLog

+2010-03-16  Richard Guenther  <rguenther@suse.de>
+
+	PR middle-end/43379
+	* tree-cfg.c (gimple_merge_blocks): When propagating virtual
+	PHI operands make sure to merge SSA_NAME_OCCURS_IN_ABNORMAL_PHI
+	properly.
+
 2010-03-16  Aldy Hernandez  <aldyh@redhat.com>
 	    Alexandre Oliva  <aoliva@redhat.com>
 

gcc/testsuite/ChangeLog

+2010-03-16  Richard Guenther  <rguenther@suse.de>
+
+	PR middle-end/43379
+	* gcc.dg/pr43379.c: New testcase.
+
 2010-03-16  Jakub Jelinek  <jakub@redhat.com>
 
 	PR debug/43051

gcc/testsuite/gcc.dg/pr43379.c

+/* { dg-do compile } */
+/* { dg-options "-O2 -ftracer" } */
+
+void *foo(int i, int *p)
+{
+lab:
+  if (p) *p = i;
+  goto *p;
+  return &&lab;
+}
+

gcc/tree-cfg.c

@@ -1617,6 +1617,9 @@ gimple_merge_blocks (basic_block a, basic_block b)
 	      FOR_EACH_IMM_USE_STMT (stmt, iter, def)
 		FOR_EACH_IMM_USE_ON_STMT (use_p, iter)
 		  SET_USE (use_p, use);
+
+	      if (SSA_NAME_OCCURS_IN_ABNORMAL_PHI (def))
+		SSA_NAME_OCCURS_IN_ABNORMAL_PHI (use) = 1;
 	    }
 	  else
             replace_uses_by (def, use);