| commit | 6bf1e8eadd36f077cf5403d23c664129d98eaf79 | [log] [tgz] |
|---|---|---|
| author | Tim Northover <tnorthover@apple.com> | Wed Aug 28 09:46:37 2013 +0000 |
| committer | Tim Northover <tnorthover@apple.com> | Wed Aug 28 09:46:37 2013 +0000 |
| tree | f6db658d861c33850f14aed4248c028f3b2fa32e | |
| parent | b1c09b913e331824da29f8017452b6171f7eccbc [diff] |
ARM: Emit normal IR for vaddhn/vsubhn NEON intrinsics
These operations "vector add high-half narrow" actually correspond to the
sequence:
%sum = add <4 x i32> %lhs, %rhs
%high = lshr <4 x i32> %sum, <i32 16, i32 16, i32 16, i32 16>
%res = trunc <4 x i32> %high to <4 x i16>
Now that LLVM can spot this, Clang should emit the corresponding LLVM IR.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@189463 91177308-0d34-0410-b5e6-96231b3b80d8