[Patch] PR71017 - libgcc/config/i386/cpuinfo.c:346:17: runtime error: left shift of 1 by 31 places cannot be represented in type 'int'
Dominique d'Humières
dominiq@lps.ens.fr
Sat Jan 7 13:14:00 GMT 2017
The following patch fixes errors of the kind
libgcc/config/i386/cpuinfo.c:260:17: runtime error: left shift of 1 by 31 places cannot be represented in type ‘int'
2017-01-07 Dominique d'Humieres <dominiq@lps.ens.fr>
PR target/71017
* config/i386/cpuid.h: Fix undefined behavior.
--- ../_clean/gcc/config/i386/cpuid.h 2017-01-01 17:39:04.000000000 +0100
+++ gcc/config/i386/cpuid.h 2017-01-05 15:22:31.000000000 +0100
@@ -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)
Is it OK for trunk/branches?
TIA
Dominique
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