From: Dominique d'Humieres <dominiq@lps.ens.fr>
Date: Mon, 9 Jan 2017 22:00:32 +0000 (+0100)
Subject: re PR target/71017 (libgcc/config/i386/cpuinfo.c:346:17: runtime error: left shift... 
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=852a63c540fff78a95e77a42c5f08d6a25ffc797;p=gcc.git

re PR target/71017 (libgcc/config/i386/cpuinfo.c:346:17: runtime error: left shift of 1 by 31 places cannot be represented in type 'int')

	PR target/71017
	* config/i386/cpuid.h: Fix undefined behavior.

From-SVN: r244248
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index ed75ea8eaf2..4b2bd761dcc 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2017-01-09  Dominique d'Humieres  <dominiq@lps.ens.fr>
+
+	PR target/71017
+	* config/i386/cpuid.h: Fix undefined behavior.
+
 2017-01-04  Jeff Law  <law@redhat.com>
 
 	PR tree-optimization/79007
diff --git a/gcc/config/i386/cpuid.h b/gcc/config/i386/cpuid.h
index c23a4931444..fdd7e15b6d1 100644
--- a/gcc/config/i386/cpuid.h
+++ b/gcc/config/i386/cpuid.h
@@ -91,7 +91,7 @@
 #define bit_AVX512CD	(1 << 28)
 #define bit_SHA		(1 << 29)
 #define bit_AVX512BW	(1 << 30)
-#define bit_AVX512VL	(1 << 31)
+#define bit_AVX512VL	(1u << 31)
 
 /* %ecx */
 #define bit_PREFETCHWT1	  (1 << 0)