RPCS3/llvm-mirror
1
0
Fork 0
mirror of https://github.com/RPCS3/llvm-mirror.git synced 2025-02-13 17:00:01 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

Reverting back to the fallback instead of using popcnt; this instruction doesn't exist on all CPU architectures. Fixes PR14982

Browse Source 
llvm-svn: 172734
This commit is contained in:
Aaron Ballman 2013-01-17 18:27:30 +00:00
parent a2682ebf0e
commit 84f436abf8
1 changed files with 0 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
include/llvm/Support/MathExtras.h
View File

@ -303,8 +303,6 @@ inline unsigned CountTrailingOnes_64(uint64_t Value) {
inline unsigned CountPopulation_32(uint32_t Value) {
#if __GNUC__ >= 4
return __builtin_popcount(Value);
#elif defined(_MSC_VER)
return __popcnt(Value);
#else
uint32_t v = Value - ((Value >> 1) & 0x55555555);
v = (v & 0x33333333) + ((v >> 2) & 0x33333333);