At the end of the codegen pipeline for DXIL we will emit the DXIL into
a global variable in the Module annotated for the "DXIL" section.
This will be used by the MCDXContainerStreamer to emit the DXIL into a
DXContainer DXIL part.
Other parts of the DXContainer will be constructed similarly by
serializing their values into GlobalVariables.
This will allow DXIL to flow into DXContainers through the normal
MCStreamer flow used in the MC layer.
Depends on D122270
Reviewed By: kuhar
Differential Revision: https://reviews.llvm.org/D125334
This change is a big blob of code that isn't easy to break up. It
either comes in all together as a blob, works and has tests, or it
doesn't do anything.
Logically you can think of this patch as three things:
(1) Adding virtual interfaces so the bitcode writer can be overridden
(2) Adding a new bitcode writer implementation for DXIL
(3) Adding some (optional) crazy CMake goop to build the
DirectXShaderCompiler's llvm-dis as dxil-dis for testing
Reviewed By: nikic
Differential Revision: https://reviews.llvm.org/D122082
