Implement MS _BitScan intrinsics
Summary: _BitScan intrinsics (and some others, for example _Interlocked and _bittest) are supposed to work on both ARM and x86. This is an attempt to isolate them, avoiding repeating their code or writing separate function for each builtin.
Reviewers: hans, thakis, rnk, majnemer
Subscribers: RKSimon, cfe-commits, aemerson
Differential Revision: https://reviews.llvm.org/D25264
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@284060
91177308-0d34-0410-b5e6-
96231b3b80d8
projects / clang / commit