AMDGPU: Switch some half using-tests to use amdhsa

The default clover ABI weirdly promotes half to float,
which should probably be fixed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@333730 91177308-0d34-0410-b5e6-96231b3b80d8
5 files changed