From: James Van Artsdalen <jrv@gnu.org>
Date: Mon, 12 Oct 1992 21:37:11 +0000 (+0000)
Subject: (alter_cond): If CC_NOT_SIGNED, convert signed conditions to unsigned.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=b329456eff9087db32b6dd24e8300ef59821f07c;p=gcc.git

(alter_cond): If CC_NOT_SIGNED, convert signed conditions to unsigned.

From-SVN: r2413
---

diff --git a/gcc/final.c b/gcc/final.c
index 49df7b0e318..16da27dbc89 100644
--- a/gcc/final.c
+++ b/gcc/final.c
@@ -1940,7 +1940,33 @@ alter_cond (cond)
 	value = 2;
 	break;
       }
-  
+
+  if (cc_status.flags & CC_NOT_SIGNED)
+    /* The flags are valid if signed condition operators are converted
+       to unsigned.  */
+    switch (GET_CODE (cond))
+      {
+      case LE:
+	PUT_CODE (cond, LEU);
+	value = 2;
+	break;
+
+      case LT:
+	PUT_CODE (cond, LTU);
+	value = 2;
+	break;
+
+      case GT:
+	PUT_CODE (cond, GTU);
+	value = 2;
+	break;
+
+      case GE:
+	PUT_CODE (cond, GEU);
+	value = 2;
+	break;
+      }
+
   return value;
 }
 #endif