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

[Ahmed Bougacha]

Good point, both issues are caused by a broken last-minute change:  I made the module flag to be emitted only if "true", because I didn't want "false" flags littered in every module emitted (even on targets where it doesn't make sense).

I'll just revert to always emitting the flag, whether true or false, but only on ARM/AArch64.  Does that sound OK?

-Ahmed


http://reviews.llvm.org/D7968

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