[AArch64] RFA: Use new rtl iterators in arm_cannot_copy_insn

[Richard Sandiford]

This is part of a series to remove uses of for_each_rtx from the ports.

Tested by making sure there were no code changes for gcc.dg, gcc.c-torture
and g++.dg for aarch64-linux-gnu.  OK to install?

Thanks,
Richard


gcc/
        * config/aarch64/aarch64.c: Include rtl-iter.h.
        (aarch64_tls_operand_p_1): Delete.
        (aarch64_tls_operand_p): Use FOR_EACH_SUBRTX.

Index: gcc/config/aarch64/aarch64.c
===================================================================
--- gcc/config/aarch64/aarch64.c        2014-11-02 19:59:26.977231633 +0000
+++ gcc/config/aarch64/aarch64.c        2014-11-05 11:48:59.982095520 +0000
@@ -2791,28 +2791,23 @@ aarch64_output_mi_thunk (FILE *file, tre
   reload_completed = 0;
 }
 
-static int
-aarch64_tls_operand_p_1 (rtx *x, void *data ATTRIBUTE_UNUSED)
-{
-  if (GET_CODE (*x) == SYMBOL_REF)
-    return SYMBOL_REF_TLS_MODEL (*x) != 0;
-
-  /* Don't recurse into UNSPEC_TLS looking for TLS symbols; these are
-     TLS offsets, not real symbol references.  */
-  if (GET_CODE (*x) == UNSPEC
-      && XINT (*x, 1) == UNSPEC_TLS)
-    return -1;
-
-  return 0;
-}
-
 static bool
 aarch64_tls_referenced_p (rtx x)
 {
   if (!TARGET_HAVE_TLS)
     return false;
-
-  return for_each_rtx (&x, aarch64_tls_operand_p_1, NULL);
+  subrtx_iterator::array_type array;
+  FOR_EACH_SUBRTX (iter, array, x, ALL)
+    {
+      const_rtx x = *iter;
+      if (GET_CODE (x) == SYMBOL_REF && SYMBOL_REF_TLS_MODEL (x) != 0)
+       return true;
+      /* Don't recurse into UNSPEC_TLS looking for TLS symbols; these are
+        TLS offsets, not real symbol references.  */
+      if (GET_CODE (x) == UNSPEC && XINT (x, 1) == UNSPEC_TLS)
+       iter.skip_subrtxes ();
+    }
+  return false;
 }