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| author | Michael J. Spencer <bigcheesegs@gmail.com> | 2013-01-16 19:52:12 +0000 |
|---|---|---|
| committer | Michael J. Spencer <bigcheesegs@gmail.com> | 2013-01-16 19:52:12 +0000 |
| commit | 90a1773397c3ee3989b02f8d95a5fb6e9cb03885 (patch) | |
| tree | 31fbbb2f0fd523b0ac8c432a35d56ee9ade683db | |
| parent | ad228f4a72ed3a4e9556a588d1b9d789464fdacf (diff) | |
| download | bcm5719-llvm-90a1773397c3ee3989b02f8d95a5fb6e9cb03885.tar.gz bcm5719-llvm-90a1773397c3ee3989b02f8d95a5fb6e9cb03885.zip | |
[Support] Add MSVC intrinsic for CountPopulation.
Patch by Jakub Staszak.
llvm-svn: 172645
| -rw-r--r-- | llvm/include/llvm/Support/MathExtras.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/llvm/include/llvm/Support/MathExtras.h b/llvm/include/llvm/Support/MathExtras.h index 11f9e63c9bb..10911ea11c5 100644 --- a/llvm/include/llvm/Support/MathExtras.h +++ b/llvm/include/llvm/Support/MathExtras.h @@ -299,6 +299,8 @@ inline unsigned CountTrailingOnes_64(uint64_t Value) { inline unsigned CountPopulation_32(uint32_t Value) { #if __GNUC__ >= 4 return __builtin_popcount(Value); +#elif _MSC_VER + return __popcnt(Value); #else uint32_t v = Value - ((Value >> 1) & 0x55555555); v = (v & 0x33333333) + ((v >> 2) & 0x33333333); @@ -311,6 +313,8 @@ inline unsigned CountPopulation_32(uint32_t Value) { inline unsigned CountPopulation_64(uint64_t Value) { #if __GNUC__ >= 4 return __builtin_popcountll(Value); +#elif _MSC_VER + return __popcnt64(Value); #else uint64_t v = Value - ((Value >> 1) & 0x5555555555555555ULL); v = (v & 0x3333333333333333ULL) + ((v >> 2) & 0x3333333333333333ULL); |
