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| author | Aaron Ballman <aaron@aaronballman.com> | 2013-01-17 20:04:28 +0000 |
|---|---|---|
| committer | Aaron Ballman <aaron@aaronballman.com> | 2013-01-17 20:04:28 +0000 |
| commit | cb4830cc99e790e0a76e1a9b1414e4b7e6e06134 (patch) | |
| tree | fdd5518cde1942893c738c72cc295e8456fe8a1b | |
| parent | 634bd8512a6576f9426713b72ce98904d159fd8a (diff) | |
| download | external_llvm-cb4830cc99e790e0a76e1a9b1414e4b7e6e06134.zip external_llvm-cb4830cc99e790e0a76e1a9b1414e4b7e6e06134.tar.gz external_llvm-cb4830cc99e790e0a76e1a9b1414e4b7e6e06134.tar.bz2 | |
Reverting back to the fallback instead of using the 64-bit popcnt instruction as it doesn't exist on all x64 CPU architectures.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172751 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | include/llvm/Support/MathExtras.h | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/include/llvm/Support/MathExtras.h b/include/llvm/Support/MathExtras.h index 340b774..190df1f 100644 --- a/include/llvm/Support/MathExtras.h +++ b/include/llvm/Support/MathExtras.h @@ -315,8 +315,6 @@ 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) && defined(_M_X64) - return __popcnt64(Value); #else uint64_t v = Value - ((Value >> 1) & 0x5555555555555555ULL); v = (v & 0x3333333333333333ULL) + ((v >> 2) & 0x3333333333333333ULL); |