[PATCH] D133518: [HLSL] Call global destructors from entries

[Chris Bieneman via Phabricator via cfe-commits]

beanz created this revision.
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HLSL doesn't have a C++ runtime that supports `atexit` registration. To
enable global destructors we instead rely on the `llvm.global_dtor`
mechanism.

This change disables `atexit` generation for HLSL and updates the HLSL
code generation to call global destructors on the exit from entry
functions.

Depends on D132977 <https://reviews.llvm.org/D132977>.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D133518

Files:
  clang/docs/HLSL/EntryFunctions.rst
  clang/lib/CodeGen/CGHLSLRuntime.cpp
  clang/lib/CodeGen/CGHLSLRuntime.h
  clang/lib/CodeGen/MicrosoftCXXABI.cpp
  clang/test/CodeGenHLSL/GlobalConstructorFunction.hlsl
  clang/test/CodeGenHLSL/GlobalDestructors.hlsl

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