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[Support] Include the intrisics header and check for definition properly.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172655 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Michael J. Spencer
2013-01-16 20:50:43 +00:00
parent 4f3b323f8d
commit c8b909ae49
1 changed files with 6 additions and 2 deletions
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8
include/llvm/Support/MathExtras.h
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@@ -16,6 +16,10 @@
#include "llvm/Support/SwapByteOrder.h" #include "llvm/Support/SwapByteOrder.h"
#ifdef _MSC_VER
# include <intrin.h>
#endif
namespace llvm { namespace llvm {
// NOTE: The following support functions use the _32/_64 extensions instead of // 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) { inline unsigned CountPopulation_32(uint32_t Value) {
#if __GNUC__ >= 4 #if __GNUC__ >= 4
return __builtin_popcount(Value); return __builtin_popcount(Value);
#elif _MSC_VER #elif defined(_MSC_VER)
return __popcnt(Value); return __popcnt(Value);
#else #else
uint32_t v = Value - ((Value >> 1) & 0x55555555); 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) { inline unsigned CountPopulation_64(uint64_t Value) {
#if __GNUC__ >= 4 #if __GNUC__ >= 4
return __builtin_popcountll(Value); return __builtin_popcountll(Value);
#elif _MSC_VER #elif defined(_MSC_VER)
return __popcnt64(Value); return __popcnt64(Value);
#else #else
uint64_t v = Value - ((Value >> 1) & 0x5555555555555555ULL); uint64_t v = Value - ((Value >> 1) & 0x5555555555555555ULL);