[PATCH] D15829: [PGO] Clang Option that enables IR level PGO instrumentation

[Rong Xu via cfe-commits]

xur updated this revision to Diff 44776.
xur added a comment.

added new tests and comments based on the review comments.


http://reviews.llvm.org/D15829

Files:
  include/clang/Driver/Options.td
  include/clang/Frontend/CodeGenOptions.def
  lib/CodeGen/BackendUtil.cpp
  lib/CodeGen/CodeGenModule.cpp
  lib/Driver/Tools.cpp
  lib/Frontend/CompilerInvocation.cpp
  test/Driver/instrprof-ld.c

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