[PATCH] D125655: [HLSL] add -P option for dxc mode.

[Xiang Li via Phabricator via cfe-commits]

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A new option -P is added for dxc mode.
The format is -P proprecossed_file_name
It will make compile preprocess only and output to proprecossed_file_name.

Internally it will be translated into -E -o proprecossed_file_name.

When -P exists, other output compile option like -Fo will be ignored because compiler will run preprocess only.
A warning will be report if this happened.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D125655

Files:
  clang/include/clang/Basic/DiagnosticDriverKinds.td
  clang/include/clang/Driver/Options.td
  clang/lib/Driver/Driver.cpp
  clang/lib/Driver/ToolChains/Clang.cpp
  clang/lib/Driver/ToolChains/HLSL.cpp
  clang/test/Driver/dxc_P.hlsl

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