From b34878a37be4bd942b0460be0e5f9b3c8cbe0b17 Mon Sep 17 00:00:00 2001
From: Jan Hubicka <jh@suse.cz>
Date: Sun, 7 Jan 2001 14:45:33 +0100
Subject: * jump.c (comparison_dominates_p): Support unordered compares.

From-SVN: r38776
---
 gcc/jump.c | 22 +++++++++++++++++++---
 1 file changed, 19 insertions(+), 3 deletions(-)

(limited to 'gcc/jump.c')

diff --git a/gcc/jump.c b/gcc/jump.c
index 032172d..2dae0e5 100644
--- a/gcc/jump.c
+++ b/gcc/jump.c
@@ -2004,19 +2004,34 @@ comparison_dominates_p (code1, code2)
 
   switch (code1)
     {
+    case UNEQ:
+      if (code2 == UNLE || code2 == UNGE)
+	return 1;
+      break;
+
     case EQ:
       if (code2 == LE || code2 == LEU || code2 == GE || code2 == GEU
 	  || code2 == ORDERED)
 	return 1;
       break;
 
+    case UNLT:
+      if (code2 == UNLE || code2 == NE)
+	return 1;
+      break;
+
     case LT:
-      if (code2 == LE || code2 == NE || code2 == ORDERED)
+      if (code2 == LE || code2 == NE || code2 == ORDERED || code2 == LTGT)
+	return 1;
+      break;
+
+    case UNGT:
+      if (code2 == UNGE || code2 == NE)
 	return 1;
       break;
 
     case GT:
-      if (code2 == GE || code2 == NE || code2 == ORDERED)
+      if (code2 == GE || code2 == NE || code2 == ORDERED || code2 == LTGT)
 	return 1;
       break;
 
@@ -2042,7 +2057,8 @@ comparison_dominates_p (code1, code2)
       break;
 
     case UNORDERED:
-      if (code2 == NE)
+      if (code2 == NE || code2 == UNEQ || code2 == UNLE || code2 == UNLT
+	  || code2 == UNGE || code2 == UNGT)
 	return 1;
       break;
 
-- 
cgit v1.1