[PATCH] D40276: Add -finstrument-function-entry-bare flag

[Hans Wennborg via Phabricator via cfe-commits]

hans created this revision.

This is an instrumentation flag, similar to -finstrument-functions, but it only inserts calls on function entry, the calls are inserted post-inlining, and they don't take any arugments.

This is intended for users who want to instrument function entry with minimal overhead.

(-pg would be another alternative, but foces frame pointer emission and affects linking, so is probably best left alone to be used for generating gcov data.)


https://reviews.llvm.org/D40276

Files:
  include/clang/Driver/Options.td
  include/clang/Frontend/CodeGenOptions.def
  lib/CodeGen/CodeGenFunction.cpp
  lib/Driver/ToolChains/Clang.cpp
  lib/Frontend/CompilerInvocation.cpp
  test/CodeGen/instrument-functions.c

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