Fix typo...

[pf3gnuchains/gcc-fork.git] / gcc / recog.c

diff --git a/gcc/recog.c b/gcc/recog.c
index 82cacfe..cd1cb7d 100644 (file)
--- a/gcc/recog.c
+++ b/gcc/recog.c
@@ -31,6 +31,7 @@ Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
 #include "hard-reg-set.h"
 #include "recog.h"
 #include "regs.h"
+#include "addresses.h"
 #include "expr.h"
 #include "function.h"
 #include "flags.h"
@@ -697,6 +698,46 @@ validate_replace_src_group (rtx from, rtx to, rtx insn)
   d.insn = insn;
   note_uses (&PATTERN (insn), validate_replace_src_1, &d);
 }
+
+/* Try simplify INSN.
+   Invoke simplify_rtx () on every SET_SRC and SET_DEST inside the INSN's
+   pattern and return true if something was simplified.  */
+
+bool
+validate_simplify_insn (rtx insn)
+{
+  int i;
+  rtx pat = NULL;
+  rtx newpat = NULL;
+
+  pat = PATTERN (insn);
+
+  if (GET_CODE (pat) == SET)
+    {
+      newpat = simplify_rtx (SET_SRC (pat));
+      if (newpat && !rtx_equal_p (SET_SRC (pat), newpat))
+       validate_change (insn, &SET_SRC (pat), newpat, 1);
+      newpat = simplify_rtx (SET_DEST (pat));
+      if (newpat && !rtx_equal_p (SET_DEST (pat), newpat))
+       validate_change (insn, &SET_DEST (pat), newpat, 1);
+    }
+  else if (GET_CODE (pat) == PARALLEL)
+    for (i = 0; i < XVECLEN (pat, 0); i++)
+      {
+       rtx s = XVECEXP (pat, 0, i);
+
+       if (GET_CODE (XVECEXP (pat, 0, i)) == SET)
+         {
+           newpat = simplify_rtx (SET_SRC (s));
+           if (newpat && !rtx_equal_p (SET_SRC (s), newpat))
+             validate_change (insn, &SET_SRC (s), newpat, 1);
+           newpat = simplify_rtx (SET_DEST (s));
+           if (newpat && !rtx_equal_p (SET_DEST (s), newpat))
+             validate_change (insn, &SET_DEST (s), newpat, 1);
+         }
+      }
+  return ((num_changes_pending () > 0) && (apply_change_group () > 0));
+}
 \f
 #ifdef HAVE_cc0
 /* Return 1 if the insn using CC0 set by INSN does not contain
@@ -2157,7 +2198,7 @@ preprocess_constraints (void)
                case 'p':
                  op_alt[j].is_address = 1;
                  op_alt[j].cl = reg_class_subunion[(int) op_alt[j].cl]
-                   [(int) MODE_BASE_REG_CLASS (VOIDmode)];
+                     [(int) base_reg_class (VOIDmode, ADDRESS, SCRATCH)];
                  break;
 
                case 'g':
@@ -2178,7 +2219,8 @@ preprocess_constraints (void)
                      op_alt[j].cl
                        = (reg_class_subunion
                           [(int) op_alt[j].cl]
-                          [(int) MODE_BASE_REG_CLASS (VOIDmode)]);
+                          [(int) base_reg_class (VOIDmode, ADDRESS,
+                                                 SCRATCH)]);
                      break;
                    }