jakev added a comment.
In http://reviews.llvm.org/D21823#470516, @xur wrote:
> (1) It seems the original options of -fprofile-instr-generate and
> -fprofile-instr-use will be kept. Is so, what is the guideline to use these
> two sets of options.
Sorry I'm not sure I understand what you're asking, but it's my understanding
that we would simply detail the lack of interoperability between the existing
set of flags and the ones added by this patch.
> Also, we need some documentations for the new user-visible
> options.
I'm happy to add some info to the Clang UserManual in this patch if everyone is
happy with the flag names.
> (2) One difference b/w -fprofile-instr-generate/-fprofile-instr-use and the
> new options is -fpgo-train={source-cfg | optimizer-cfg} can coexist with
> -fpgo-apply=<file>. I don't think they work as intended in current
> implementation. I would suggest to not allow it.
Sure, I've updated the patch to not allow this.
Repository:
rL LLVM
http://reviews.llvm.org/D21823
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