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Changes from Git (git http://labmaster3.local/git/llvm-project.git)

Summary

  1. [X86] Remove unnecessary isNullConstant in LowerSelect. NFC (details)
Commit 457660683154014db4b649e852d152354844338a by craig.topper
[X86] Remove unnecessary isNullConstant in LowerSelect. NFC

At this point in the code we know that Op1 or Op2 is
all ones. Y points to the other operand. In the case that
Op2 is zero, Op1 must be all ones and Y is Op2. The OR
ORs Y into Res. But if Y is 0 the OR will be folded away by
getNode so we don't need to check for it.
The file was modifiedllvm/lib/Target/X86/X86ISelLowering.cpp