fwprop.c: Include rtl-iter.h.

gcc/
	* fwprop.c: Include rtl-iter.h.
	(varying_mem_p): Turn from being a for_each_rtx callback to being
	a function that examines each subrtx itself.
	(propagate_rtx): Update accordingly.

From-SVN: r214641

gcc/ChangeLog

 2014-08-28  Richard Sandiford  <rdsandiford@googlemail.com>
 
+	* fwprop.c: Include rtl-iter.h.
+	(varying_mem_p): Turn from being a for_each_rtx callback to being
+	a function that examines each subrtx itself.
+	(propagate_rtx): Update accordingly.
+
+2014-08-28  Richard Sandiford  <rdsandiford@googlemail.com>
+
 	* function.c: Include rtl-iter.h
 	(instantiate_virtual_regs_in_rtx): Turn from being a for_each_rtx
 	callback to being a function that examines each subrtx itself.

gcc/fwprop.c

@@ -38,6 +38,7 @@ along with GCC; see the file COPYING3.  If not see
 #include "tree-pass.h"
 #include "domwalk.h"
 #include "emit-rtl.h"
+#include "rtl-iter.h"
 
 
 /* This pass does simple forward propagation and simplification when an
@@ -623,14 +624,16 @@ propagate_rtx_1 (rtx *px, rtx old_rtx, rtx new_rtx, int flags)
 }
 
 
-/* for_each_rtx traversal function that returns 1 if BODY points to
-   a non-constant mem.  */
+/* Return true if X constains a non-constant mem.  */
 
-static int
-varying_mem_p (rtx *body, void *data ATTRIBUTE_UNUSED)
+static bool
+varying_mem_p (const_rtx x)
 {
-  rtx x = *body;
-  return MEM_P (x) && !MEM_READONLY_P (x);
+  subrtx_iterator::array_type array;
+  FOR_EACH_SUBRTX (iter, array, x, NONCONST)
+    if (MEM_P (*iter) && !MEM_READONLY_P (*iter))
+      return true;
+  return false;
 }
 
 
@@ -661,7 +664,7 @@ propagate_rtx (rtx x, enum machine_mode mode, rtx old_rtx, rtx new_rtx,
 	  && (GET_MODE_SIZE (mode)
 	      <= GET_MODE_SIZE (GET_MODE (SUBREG_REG (new_rtx))))))
     flags |= PR_CAN_APPEAR;
-  if (!for_each_rtx (&new_rtx, varying_mem_p, NULL))
+  if (!varying_mem_p (new_rtx))
     flags |= PR_HANDLE_MEM;
 
   if (speed)