diff options
| -rw-r--r-- | include/llvm/Support/MathExtras.h | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/include/llvm/Support/MathExtras.h b/include/llvm/Support/MathExtras.h index 10911ea11c..eaab8abe07 100644 --- a/include/llvm/Support/MathExtras.h +++ b/include/llvm/Support/MathExtras.h @@ -16,6 +16,10 @@ #include "llvm/Support/SwapByteOrder.h" +#ifdef _MSC_VER +# include <intrin.h> +#endif + namespace llvm { // NOTE: The following support functions use the _32/_64 extensions instead of @@ -299,7 +303,7 @@ inline unsigned CountTrailingOnes_64(uint64_t Value) { inline unsigned CountPopulation_32(uint32_t Value) { #if __GNUC__ >= 4 return __builtin_popcount(Value); -#elif _MSC_VER +#elif defined(_MSC_VER) return __popcnt(Value); #else uint32_t v = Value - ((Value >> 1) & 0x55555555); @@ -313,7 +317,7 @@ inline unsigned CountPopulation_32(uint32_t Value) { inline unsigned CountPopulation_64(uint64_t Value) { #if __GNUC__ >= 4 return __builtin_popcountll(Value); -#elif _MSC_VER +#elif defined(_MSC_VER) return __popcnt64(Value); #else uint64_t v = Value - ((Value >> 1) & 0x5555555555555555ULL); |