[all-commits] [llvm/llvm-project] bef299: [GCOVProfiling] don't profile Fn's w/ noprofile at...

[Nick Desaulniers via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: bef299286104c2b6383a43b9d1eb0e47838cb5b6
      https://github.com/llvm/llvm-project/commit/bef299286104c2b6383a43b9d1eb0e47838cb5b6
  Author: Nick Desaulniers <ndesaulniers at google.com>
  Date:   2021-06-18 (Fri, 18 Jun 2021)

  Changed paths:
    M llvm/lib/Transforms/Instrumentation/GCOVProfiling.cpp
    A llvm/test/Transforms/GCOVProfiling/noprofile.ll

  Log Message:
  -----------
  [GCOVProfiling] don't profile Fn's w/ noprofile attribute

Similar to D104475, the Linux kernel would like to avoid compiler
generated code in certain functions. The no_profile function
attribute can be used in C to generate the the noprofile fn attr in IR.
Respect that from GCOVProfiling.

Link: https://lore.kernel.org/lkml/CAKwvOdmPTi93n2L0_yQkrzLdmpxzrOR7zggSzonyaw2PGshApw@mail.gmail.com/

Reviewed By: MaskRay

Differential Revision: https://reviews.llvm.org/D104257