From 3c37d7ad7198395e2493e849dfb402b61ce7b0c9 Mon Sep 17 00:00:00 2001
From: rth <rth@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Sat, 10 Apr 1999 22:16:29 +0000
Subject: [PATCH] * recog.c (constrain_operands): Ignore unary
operators when matching operands. Recognize '5'..'9' as well.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@26342 138bc75d-0d04-0410-961f-82ee72b054a4
---
gcc/ChangeLog | 5 +++++
gcc/recog.c | 22 +++++++++++++++-------
2 files changed, 20 insertions(+), 7 deletions(-)
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 539923904686..6eed4a05fb67 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+Sat Apr 10 22:12:12 1999 Jan Hubicka <hubicka@freesoft.cz>
+
+ * recog.c (constrain_operands): Ignore unary operators when
+ matching operands. Recognize '5'..'9' as well.
+
Sat Apr 10 21:53:02 1999 Philipp Thomas (kthomas@gwdg.de)
Richard Henderson <rth@cygnus.com>
diff --git a/gcc/recog.c b/gcc/recog.c
index 6bceae85a9e7..94e7abbffff5 100644
--- a/gcc/recog.c
+++ b/gcc/recog.c
@@ -2303,11 +2303,8 @@ constrain_operands (strict)
earlyclobber[opno] = 1;
break;
- case '0':
- case '1':
- case '2':
- case '3':
- case '4':
+ case '0': case '1': case '2': case '3': case '4':
+ case '5': case '6': case '7': case '8': case '9':
/* This operand must be the same as a previous one.
This kind of constraint is used for instructions such
as add when they take only two operands.
@@ -2319,8 +2316,19 @@ constrain_operands (strict)
if (strict < 0)
val = 1;
else
- val = operands_match_p (recog_operand[c - '0'],
- recog_operand[opno]);
+ {
+ rtx op1 = recog_operand[c - '0'];
+ rtx op2 = recog_operand[opno];
+
+ /* A unary operator may be accepted by the predicate,
+ but it is irrelevant for matching constraints. */
+ if (GET_RTX_CLASS (GET_CODE (op1)) == '1')
+ op1 = XEXP (op1, 0);
+ if (GET_RTX_CLASS (GET_CODE (op2)) == '1')
+ op2 = XEXP (op2, 0);
+
+ val = operands_match_p (op1, op2);
+ }
matching_operands[opno] = c - '0';
matching_operands[c - '0'] = opno;
--
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