From 603b6b8892e3b2ee00de59e728d0f1937306358b Mon Sep 17 00:00:00 2001
From: DJ Delorie <dj@redhat.com>
Date: Thu, 23 Dec 2004 15:21:08 -0500
Subject: [PATCH] genrecog.c (did_you_mean_codes): New.
* genrecog.c (did_you_mean_codes): New.
(compute_predicate_codes): Fail unmatched codes.
From-SVN: r92565
---
gcc/ChangeLog | 5 +++++
gcc/genrecog.c | 19 +++++++++++++++++++
2 files changed, 24 insertions(+)
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 287eb53f1b48..9f8e174b30da 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2004-12-23 DJ Delorie <dj@redhat.com>
+
+ * genrecog.c (did_you_mean_codes): New.
+ (compute_predicate_codes): Fail unmatched codes.
+
2004-12-23 Eric Christopher <echristo@redhat.com>
* config/mips/mips.h (TARGET_CPU_CPP_BUILTINS): Add
diff --git a/gcc/genrecog.c b/gcc/genrecog.c
index 64cd905b0caa..2936f80afc7a 100644
--- a/gcc/genrecog.c
+++ b/gcc/genrecog.c
@@ -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 +288,30 @@ 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", 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;
--
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