integrate.c (copy_rtx_and_substitute, case MEM): If inlining and not for LHS,…

integrate.c (copy_rtx_and_substitute, case MEM): If inlining and not for LHS, clear RTX_UNCHANGING_P.

	* integrate.c (copy_rtx_and_substitute, case MEM): If inlining
	and not for LHS, clear RTX_UNCHANGING_P.

From-SVN: r48337

gcc/ChangeLog

+Thu Dec 27 20:39:55 2001  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>
+
+	* integrate.c (copy_rtx_and_substitute, case MEM): If inlining
+	and not for LHS, clear RTX_UNCHANGING_P.
+
 2001-12-28  Philipp Thomas  <pthomas@suse.de>
 
 	* cppfiles.c (stack_include_file): Don't translate <stdin>.

gcc/integrate.c

@@ -2267,6 +2267,13 @@ copy_rtx_and_substitute (orig, map, for_lhs)
       PUT_MODE (copy, mode);
       XEXP (copy, 0) = copy_rtx_and_substitute (XEXP (orig, 0), map, 0);
       MEM_COPY_ATTRIBUTES (copy, orig);
+
+      /* If inlining and this is not for the LHS, turn off RTX_UNCHANGING_P
+	 since this may be an indirect reference to a parameter and the
+	 actual may not be readonly.  */
+      if (inlining && !for_lhs)
+	RTX_UNCHANGING_P (copy) = 0;
+
       return copy;
 
     default: