integrate.c (copy_rtx_and_substitute): Squash MEM_EXPR when it refers to a subroutine parameter.

        * integrate.c (copy_rtx_and_substitute): Squash MEM_EXPR when it
        refers to a subroutine parameter.

From-SVN: r55956

gcc/ChangeLog

+2002-08-01  Richard Henderson  <rth@redhat.com>
+
+	* integrate.c (copy_rtx_and_substitute): Squash MEM_EXPR when it
+	refers to a subroutine parameter.
+
 2002-08-01  Jakub Jelinek  <jakub@redhat.com>
 
 	* varasm.c (assemble_visibility): Strip name encoding.

gcc/integrate.c

@@ -2321,6 +2321,13 @@ copy_rtx_and_substitute (orig, map, for_lhs)
       if (inlining && !for_lhs)
 	RTX_UNCHANGING_P (copy) = 0;
 
+      /* If inlining, squish aliasing data that references the subroutine's
+	 parameter list, since that's no longer applicable.  */
+      if (inlining && MEM_EXPR (copy)
+	  && TREE_CODE (MEM_EXPR (copy)) == INDIRECT_REF
+	  && TREE_CODE (TREE_OPERAND (MEM_EXPR (copy), 0)) == PARM_DECL)
+	set_mem_expr (copy, NULL_TREE);
+
       return copy;
 
     default: