AMDGPU/SI: Add support for sgpr and vgpr inline assembly constraints

Summary: The 's' constraint represents sgprs and the 'v' constraint represents vgprs.

Reviewers: arsenm, echristo

Subscribers: arsenm, llvm-commits

Differential Revision: http://reviews.llvm.org/D15342

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255203 91177308-0d34-0410-b5e6-96231b3b80d8
3 files changed