re PR target/71017 (libgcc/config/i386/cpuinfo.c:346:17: runtime error: left…

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

gcc/ChangeLog

+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

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)