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| author | Zachary Turner <zturner@google.com> | 2014-06-25 05:42:32 +0000 |
|---|---|---|
| committer | Zachary Turner <zturner@google.com> | 2014-06-25 05:42:32 +0000 |
| commit | 736d4d85db80d2583ac12daa1eac59b0c010e1af (patch) | |
| tree | cadf1e3ed5632fe60feb4b1c438b6275e6351a26 /llvm/lib/CodeGen/MachineFunction.cpp | |
| parent | 6804d450cdbb7c44c392c7009d1f2c4ca3d04ce6 (diff) | |
| download | llvm-736d4d85db80d2583ac12daa1eac59b0c010e1af.zip llvm-736d4d85db80d2583ac12daa1eac59b0c010e1af.tar.gz llvm-736d4d85db80d2583ac12daa1eac59b0c010e1af.tar.bz2 | |
Replace GCC-specific intrinsic with portable alternative.
Not all supported compilers have GCC intrinsics, so this patch
uses the correct portable alternative.
Additionally, this patch fixes an off-by-one error. __builtin_ffs
returns the 1-based index of the least-significant 1-bit, but the
function expects the base 2 logarithm of the number, which is
equivalent to the 0-based index of the least-significant 1-bit.
Reviewed by: Keno Fischer
Differential Revision: http://reviews.llvm.org/D4284
llvm-svn: 211669
Diffstat (limited to 'llvm/lib/CodeGen/MachineFunction.cpp')
0 files changed, 0 insertions, 0 deletions