From: Jeff Law <law@redhat.com>
Date: Sat, 26 Sep 2015 07:42:32 +0000 (-0600)
Subject: [PATCH] Fix undefined behaviour in SH port
X-Git-Tag: basepoints/gcc-7~4353
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a0a65802bf1336dcaf72b060bc8a8decf228945a;p=thirdparty%2Fgcc.git

[PATCH] Fix undefined behaviour in SH port

    [PATCH] Fix undefined behaviour in SH port
	* config/sh/sh.h (CONST_OK_FOR_J16): Fix left shift undefined
	behaviour

From-SVN: r228165
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 6887b14fde30..28c6bf7fcc93 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,5 +1,8 @@
 2015-09-26  Jeff Law  <law@redhat.com>
 
+	* config/sh/sh.h (CONST_OK_FOR_J16): Fix left shift undefined
+	behaviour
+
 	* config/mips/mips.c (mips_compute_frame_info): Fix left shift
 	undefined behaviour.
 
diff --git a/gcc/config/sh/sh.h b/gcc/config/sh/sh.h
index 7aa489d6dc04..b18cc1fedc1a 100644
--- a/gcc/config/sh/sh.h
+++ b/gcc/config/sh/sh.h
@@ -1176,7 +1176,7 @@ extern enum reg_class regno_reg_class[FIRST_PSEUDO_REGISTER];
 
 #define CONST_OK_FOR_J16(VALUE) \
   ((HOST_BITS_PER_WIDE_INT >= 64 && (VALUE) == (HOST_WIDE_INT) 0xffffffff) \
-   || (HOST_BITS_PER_WIDE_INT >= 64 && (VALUE) == (HOST_WIDE_INT) -1 << 32))
+   || (HOST_BITS_PER_WIDE_INT >= 64 && (VALUE) == (HOST_WIDE_INT) (HOST_WIDE_INT_M1U << 32)))
 
 #define CONST_OK_FOR_K08(VALUE) (((HOST_WIDE_INT)(VALUE))>= 0 \
 				 && ((HOST_WIDE_INT)(VALUE)) <= 255)