[PATCH] D72890: [xray] Allow instrumenting only function entry and/or only function exit

[Ian Levesque via Phabricator via llvm-commits]

ianlevesque created this revision.
ianlevesque added a reviewer: dberris.
Herald added subscribers: llvm-commits, cfe-commits, hiraditya.
Herald added projects: clang, LLVM.

Extend -fxray-instrumentation-bundle to split function-entry and
function-exit into two separate options, so that it is possible to
instrument only function entry or only function exit.  For use cases
that only care about one or the other this will save significant overhead
and code size.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D72890

Files:
  clang/include/clang/Basic/XRayInstr.h
  clang/include/clang/Driver/Options.td
  clang/lib/Basic/XRayInstr.cpp
  clang/lib/CodeGen/CodeGenFunction.cpp
  clang/lib/Driver/XRayArgs.cpp
  clang/test/CodeGen/xray-instrumentation-bundles.cpp
  llvm/lib/CodeGen/XRayInstrumentation.cpp
  llvm/test/CodeGen/AArch64/xray-partial-instrumentation-skip-entry.ll
  llvm/test/CodeGen/AArch64/xray-partial-instrumentation-skip-exit.ll

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