From: Jeff Law <law@redhat.com>
Date: Tue, 29 Sep 2015 16:28:51 +0000 (-0600)
Subject: [PATCH] Fix undefined behaviour in rl78 port
X-Git-Tag: basepoints/gcc-7~4303
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=187a0dd603cd33a0246b6707f3783fae096e9e95;p=thirdparty%2Fgcc.git

[PATCH] Fix undefined behaviour in rl78 port

[PATCH] Fix undefined behaviour in rl78 port
        * config/rl78/rl78-expand.md (movqi): Fix undefined left shift
        behaviour.

From-SVN: r228252
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 1b9985af4daa..79dc89fafa84 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,5 +1,8 @@
 2015-09-29  Jeff Law  <law@redhat.com>
 
+	* config/rl78/rl78-expand.md (movqi): Fix undefined left shift
+	behaviour.
+
 	* config/msp430/msp430.c (msp430_legitimate_constant): Fix undefined
 	left shift behaviour.
 	* config/msp430/constraints.md ('L' constraint): Similarly.
diff --git a/gcc/config/rl78/rl78-expand.md b/gcc/config/rl78/rl78-expand.md
index 0335a4d2a681..67e6620bdf66 100644
--- a/gcc/config/rl78/rl78-expand.md
+++ b/gcc/config/rl78/rl78-expand.md
@@ -48,7 +48,7 @@
 	&& ! REG_P (operands[0]))
 	operands[1] = copy_to_mode_reg (QImode, operands[1]);
 
-    if (CONST_INT_P (operands[1]) && ! IN_RANGE (INTVAL (operands[1]), (-1 << 8) + 1, (1 << 8) - 1))
+    if (CONST_INT_P (operands[1]) && ! IN_RANGE (INTVAL (operands[1]), (HOST_WIDE_INT_M1U << 8) + 1, (1 << 8) - 1))
       FAIL;
   }
 )