[PATCH] Disable x86 tail call optimizations that jump through GOT

[Reid Kleckner]

Thanks for the patch! I simplified the conditional a bit and tweaked the tests to try to cover some more corner cases that I could think of. During testing I found that this disabled tail calling of internal (think static in C) functions, so I added hasLocalLinkage() to the conditional. I committed the result as r238487.


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http://reviews.llvm.org/D9799

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