[PATCH] D39114: [XRay] Initial XRay in Darwin Support

[Dean Michael Berris via Phabricator via llvm-commits]

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

This is a work-in-progress change that attempts to allow us to build
and use the XRay runtime in Darwin. Current state:

- Assembler files are broken due to assumptions about ELFisms.
- Test infrastructure is laid out, but we aren't able to test yet.

We also:

- Use a better preprocessor check for preinint array support.
- Only build for osx.
- Enable the use of -fxray-instrument (and other flags) in clang.

This patch uses the monorepo layout for the chnage.


https://reviews.llvm.org/D39114

Files:
  clang/lib/Driver/XRayArgs.cpp
  compiler-rt/cmake/config-ix.cmake
  compiler-rt/lib/xray/CMakeLists.txt
  compiler-rt/lib/xray/tests/CMakeLists.txt
  compiler-rt/lib/xray/xray_init.cc
  compiler-rt/test/xray/TestCases/Darwin/always-never-instrument.cc
  compiler-rt/test/xray/TestCases/Darwin/lit.local.cfg
  compiler-rt/test/xray/TestCases/Linux/lit.local.cfg
  compiler-rt/test/xray/lit.cfg

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