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

[David Li via cfe-commits]

davidxl added a comment.

This option is not needed for -fprofile-instr-use compilation as the compiler can detect the flavor of the profile (patch pending review), and decide what to do.

The question here is what the option should look like  to tell the compiler which phase to do the instrumentation (fprofile-instr-generate).


http://reviews.llvm.org/D15829