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

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

From-SVN: r244248

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index ed75ea8eaf2532ad7bdac82e2acf64645a9cb058..4b2bd761dcc5a1a5425b4b9a4617ab25b0cfe5db 100644 (file)
--- 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 c23a49314444ed09880893bbcb3152e0c275173d..fdd7e15b6d11966754b5732f159235db35655d1d 100644 (file)
--- 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)