[PATCH] D40861: [X86] Add support for stack probing on x86_64 Darwin

[Amara Emerson via Phabricator via llvm-commits]

aemerson created this revision.
Herald added a subscriber: mgorny.

[X86] Add support for stack probing on x86_64 Darwin.

This change re-uses the existing infrastructure for generating calls to a stack probing function. The stack probing is done for static and dynamic stack objects. As a result of the code re-use, I've renamed the WIN_ALLOCA node to DYN_ALLOCA and the related optimisation pass.

A new TargetOption is added to enable stack probing for non-Windows targets, for which currently only Darwin is supported.


Repository:
  rL LLVM

https://reviews.llvm.org/D40861

Files:
  include/llvm/CodeGen/CommandFlags.def
  include/llvm/Target/TargetOptions.h
  lib/Target/X86/CMakeLists.txt
  lib/Target/X86/X86.h
  lib/Target/X86/X86DynAllocaExpander.cpp
  lib/Target/X86/X86FrameLowering.cpp
  lib/Target/X86/X86ISelLowering.cpp
  lib/Target/X86/X86ISelLowering.h
  lib/Target/X86/X86InstrCompiler.td
  lib/Target/X86/X86InstrInfo.td
  lib/Target/X86/X86MachineFunctionInfo.h
  lib/Target/X86/X86TargetMachine.cpp
  lib/Target/X86/X86WinAllocaExpander.cpp
  test/CodeGen/X86/O0-pipeline.ll
  test/CodeGen/X86/darwin-stack-probing.ll

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