From: Richard Kenner <kenner@gcc.gnu.org>
Date: Wed, 24 Jun 1992 23:14:43 +0000 (-0400)
Subject: *** empty log message ***
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=08af8e094f5a13d5e80823f2b6c239c68533bb53;p=gcc.git

*** empty log message ***

From-SVN: r1279
---

diff --git a/gcc/expr.c b/gcc/expr.c
index fef186e8916..f869b58c9de 100644
--- a/gcc/expr.c
+++ b/gcc/expr.c
@@ -5927,11 +5927,14 @@ do_jump (exp, if_false_label, if_true_label)
 	 combine can't do this for us because it can't know whether a
 	 ZERO_EXTRACT or a compare in a smaller mode exists, but we do.  */
 
-      if (TREE_CODE (TREE_OPERAND (exp, 1)) == INTEGER_CST
+      if (! SLOW_BYTE_ACCESS
+	  && TREE_CODE (TREE_OPERAND (exp, 1)) == INTEGER_CST
 	  && TYPE_PRECISION (TREE_TYPE (exp)) <= HOST_BITS_PER_INT
 	  && (i = floor_log2 (TREE_INT_CST_LOW (TREE_OPERAND (exp, 1)))) >= 0
 	  && (type = type_for_size (i + 1, 1)) != 0
-	  && TYPE_PRECISION (type) < TYPE_PRECISION (TREE_TYPE (exp)))
+	  && TYPE_PRECISION (type) < TYPE_PRECISION (TREE_TYPE (exp))
+	  && (cmp_optab->handlers[(int) TYPE_MODE (type)].insn_code
+	      != CODE_FOR_nothing))
 	{
 	  do_jump (convert (type, exp), if_false_label, if_true_label);
 	  break;
@@ -5980,8 +5983,11 @@ do_jump (exp, if_false_label, if_true_label)
 			     &mode, &unsignedp, &volatilep);
 
 	type = type_for_size (bitsize, unsignedp);
-	if (type != 0 && bitsize >= 0
-	    && TYPE_PRECISION (type) < TYPE_PRECISION (TREE_TYPE (exp)))
+	if (! SLOW_BYTE_ACCESS
+	    && type != 0 && bitsize >= 0
+	    && TYPE_PRECISION (type) < TYPE_PRECISION (TREE_TYPE (exp))
+	    && (cmp_optab->handlers[(int) TYPE_MODE (type)].insn_code
+		!= CODE_FOR_nothing))
 	  {
 	    do_jump (convert (type, exp), if_false_label, if_true_label);
 	    break;