[llvm-commits] PATCH: Move the global-copy-to-alloca optimization to InstCombine

[Chandler Carruth]

Hello,

I've been hacking on SROA a lot (email coming up on that front..) and one
of the oddities is that SROA is doing a very instcombine-like optimization.
I was able to move it over to InstCombine w/o touching any other aspect of
SROA. It simplifies the model of SROA a bit, and also the optimization
works much better in the instcombine framework: this is about nuking one
instruction, and replacing it with another.

Look good?
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