2005-06-14 Vincent Celier <celier@adacore.com>

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

diff --git a/gcc/genrecog.c b/gcc/genrecog.c
index 64cd905..9fde918 100644 (file)
--- a/gcc/genrecog.c
+++ b/gcc/genrecog.c
@@ -1,6 +1,6 @@
 /* Generate code from machine description to recognize rtl as insns.
    Copyright (C) 1987, 1988, 1992, 1993, 1994, 1995, 1997, 1998,
-   1999, 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
+   1999, 2000, 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
 
    This file is part of GCC.
 
@@ -226,6 +226,9 @@ static int error_count;
 #define TRISTATE_NOT(a)                                \
   ((a) == I ? I : !(a))
 
+/* 0 means no warning about that code yet, 1 means warned.  */
+static char did_you_mean_codes[NUM_RTX_CODE];
+
 /* Recursively calculate the set of rtx codes accepted by the
    predicate expression EXP, writing the result to CODES.  */
 static void
@@ -285,14 +288,31 @@ compute_predicate_codes (rtx exp, char codes[NUM_RTX_CODE])
        while ((code = scan_comma_elt (&next_code)) != 0)
          {
            size_t n = next_code - code;
+           int found_it = 0;
            
            for (i = 0; i < NUM_RTX_CODE; i++)
              if (!strncmp (code, GET_RTX_NAME (i), n)
                  && GET_RTX_NAME (i)[n] == '\0')
                {
                  codes[i] = Y;
+                 found_it = 1;
                  break;
                }
+           if (!found_it)
+             {
+               message_with_line (pattern_lineno, "match_code \"%.*s\" matches nothing",
+                                  (int) n, code);
+               error_count ++;
+               for (i = 0; i < NUM_RTX_CODE; i++)
+                 if (!strncasecmp (code, GET_RTX_NAME (i), n)
+                     && GET_RTX_NAME (i)[n] == '\0'
+                     && !did_you_mean_codes[i])
+                   {
+                     did_you_mean_codes[i] = 1;
+                     message_with_line (pattern_lineno, "(did you mean \"%s\"?)", GET_RTX_NAME (i));
+                   }
+             }
+
          }
       }
       break;
@@ -2093,7 +2113,7 @@ write_cond (struct decision_test *p, int depth,
       break;
 
     case DT_c_test:
-      printf ("(%s)", p->u.c_test);
+      print_c_condition (p->u.c_test);
       break;
 
     case DT_accept_insn: