[PATCH] D19015: [LTO] ensure lto_codegen_debug_options() are passed on to LLVM

[Paul Robinson via llvm-commits]

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In http://reviews.llvm.org/D19015#399467, @joker.eph wrote:

> In http://reviews.llvm.org/D19015#399466, @thomasguest wrote:
>
> > In http://reviews.llvm.org/D19015#399462, @joker.eph wrote:
> >
> > > To put it differently: there is no command line option for LLVM (as a library), only APIs.
> >
> >
> > Yes, what I am really after is a way to configure codegen when using LLVM via the LTO library. At the moment I cannot do so.
>
>
> Yes, apparently no-one had this need till now, submit a patch :)


Let me point out that the gold plugin works exactly this way (pass in cl options as a string).
It might not be ideal but it's what we have today.
LLVM-as-library doesn't really have another way to conjure up TargetOptions (I *think* clang creates one directly, sorry can't check right now, but that seems even more fragile).


http://reviews.llvm.org/D19015