From: Kazu Hirata <kazu@cs.umass.edu>
Date: Tue, 15 Jul 2003 13:42:39 +0000 (+0000)
Subject: re PR target/10795 (ICE in extract_insn, at recog.c:2188)
X-Git-Tag: releases/gcc-3.4.0~4828
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=5df90541c7b752e3092907b2dfd3a4e324537aaf;p=thirdparty%2Fgcc.git

re PR target/10795 (ICE in extract_insn, at recog.c:2188)

	PR target/10795
	* config/i386/i386.c (ix86_expand_carry_flag_compare): Don't
	swap comparison operands if doing so would generate an
	unrecognizable insn.

From-SVN: r69407
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 38b86a7e0d16..744f15a97528 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,10 @@
+2003-07-15  Kazu Hirata  <kazu@cs.umass.edu>
+
+	PR target/10795
+	* config/i386/i386.c (ix86_expand_carry_flag_compare): Don't
+	swap comparison operands if doing so would generate an
+	unrecognizable insn.
+
 2003-07-15  Eric Botcazou  <ebotcazou@libertysurf.fr>
 
 	PR optimization/11320
diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index e4a662286654..e314ba53c2f5 100644
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -9383,6 +9383,11 @@ ix86_expand_carry_flag_compare (enum rtx_code code, rtx op0, rtx op1, rtx *pop)
 	    return false;
 	  code = (code == GTU ? GEU : LTU);
 	}
+      else if (!nonimmediate_operand (op1, mode)
+	       || !general_operand (op0, mode))
+	/* Swapping operands in this case would generate an
+	   unrecognizable insn.  */
+	return false;
       else
 	{
 	  rtx tmp = op1;