[PATCH] Pass -mglobal-merge as a module flag metadata.

[Eric Christopher]

No, you probably haven't. I was seeing it as clang doing to lto link of the module together and then codegen based on that (which means it would have the options), but...

That said, I think the general problem is more specific. I.e. how do you specify -msse3 as part of the default code generation flags when you do lto?

The C++ interface has addAttr (which is painful in that it requires, as you say, every linker to understand llvm's command line interface), but this is also pretty painful:

  const void *compile(size_t *length,
                      bool disableOpt,
                      bool disableInline,
                      bool disableGVNLoadPRE,
                      bool disableVectorization,
                      std::string &errMsg);

because, you know, all optimizations, inlining, gvnloadpre, and vectorization are all anyone care about :)

Realize this has dovetailed into "let's solve the general problem" but I am curious. The gold plugin's methods aren't much better.

Or am I missing something?

-eric


http://reviews.llvm.org/D7968

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