[PATCH] D122081: Add DXILPrepare CodeGen pass

[Chris Bieneman via Phabricator via llvm-commits]

beanz created this revision.
beanz added reviewers: MaskRay, tstellar, pete, jdoerfert, sheredom, kuhar, antiagainst, nhaehnle, rnk.
Herald added subscribers: hiraditya, mgorny.
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beanz requested review of this revision.
Herald added a project: LLVM.

The DXIL Prepare pass handles the IR mutations required to convert
modern LLVM IR into something that more closely resembles LLVM-3.7 IR
so that the DXIL bitcode writer can emit 3.7 IR.

This change adds the codegen pass handling the first two IR
transformations:

- stripping new function attributes
- converting fneg into fsub


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D122081

Files:
  llvm/lib/Target/DirectX/CMakeLists.txt
  llvm/lib/Target/DirectX/DXILPrepare.cpp
  llvm/lib/Target/DirectX/DirectX.h
  llvm/lib/Target/DirectX/DirectXTargetMachine.cpp
  llvm/test/CodeGen/DirectX/fneg-conversion.ll
  llvm/test/CodeGen/DirectX/lit.local.cfg
  llvm/test/CodeGen/DirectX/strip-fn-attrs.ll

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