[compiler-rt] r249949 - builtins: silence a MSVC warning

[Saleem Abdulrasool via llvm-commits]

Author: compnerd
Date: Sat Oct 10 12:57:37 2015
New Revision: 249949

URL: http://llvm.org/viewvc/llvm-project?rev=249949&view=rev
Log:
builtins: silence a MSVC warning

_BitReverse64 is only available on ARM and x64.  Guard it accordingly.

Modified:
    compiler-rt/trunk/lib/builtins/int_lib.h

Modified: compiler-rt/trunk/lib/builtins/int_lib.h
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/lib/builtins/int_lib.h?rev=249949&r1=249948&r2=249949&view=diff
==============================================================================
--- compiler-rt/trunk/lib/builtins/int_lib.h (original)
+++ compiler-rt/trunk/lib/builtins/int_lib.h Sat Oct 10 12:57:37 2015
@@ -106,6 +106,7 @@ uint32_t __inline __builtin_clz(uint32_t
   return 32;
 }
 
+#if defined(_M_ARM) || defined(_M_X64)
 uint32_t __inline __builtin_clzll(uint64_t value) {
   uint32_t leading_zero = 0;
   if (_BitScanReverse64(&leading_zero, value))
@@ -115,5 +116,6 @@ uint32_t __inline __builtin_clzll(uint64
 
 #define __builtin_clzl __builtin_clzll
 #endif
+#endif
 
 #endif /* INT_LIB_H */