[PATCH] Remove all MMOs from memory operations when tail merging.

[hfinkel at anl.gov]

LGTM. Make sure you mention in the commit message that no reduced test case is available.

> As for using std:equal, I do not think it works because it will compare *I1 != *I2 instead of I1 != I2 which we need to compare MemoryOperand references.


Ah, yes, you're right (you could write a custom predicate, but that does not seem worthwhile).


http://reviews.llvm.org/D7769

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