Craig Topper 61f35170e7 [InstCombine] MakeAnd/Or/Xor handling to reuse previous APInt computations
When checking if we should return a constant, we create some temporary APInts to see if we know all bits. But the exact computations we do are needed in several other locations in the same code.

This patch moves them to named temporaries so we can reuse them.

Ideally we'd write directly to KnownZero/One, but we currently seem to only write those variables after all the simplifications checks and I didn't want to change that with this patch.

Differential Revision: https://reviews.llvm.org/D32094




git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@300376 91177308-0d34-0410-b5e6-96231b3b80d8
2017-04-14 22:34:14 +00:00
2017-04-14 20:11:16 +00:00
2014-03-02 13:08:46 +00:00
2016-01-26 21:29:08 +00:00
2017-01-12 18:02:42 +00:00
2017-03-06 20:45:33 +00:00

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