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Wrapping __popcnt64 for MSVC so that it's only used on 64-bit builds.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172670 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Aaron Ballman 2013-01-16 23:17:21 +00:00
parent 5db391c67d
commit 69877d6db9
1 changed files with 1 additions and 1 deletions
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include/llvm/Support/MathExtras.h
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@ -317,7 +317,7 @@ inline unsigned CountPopulation_32(uint32_t Value) {
inline unsigned CountPopulation_64(uint64_t Value) {
#if __GNUC__ >= 4
return __builtin_popcountll(Value);
#elif defined(_MSC_VER)
#elif defined(_MSC_VER) && defined(_M_X64)
return __popcnt64(Value);
#else
uint64_t v = Value - ((Value >> 1) & 0x5555555555555555ULL);