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[MSan] Handle llvm.is.constant intrinsic

Description

[MSan] Handle llvm.is.constant intrinsic

MSan used to report false positives in the case the argument of
llvm.is.constant intrinsic was uninitialized.
In fact checking this argument is unnecessary, as the intrinsic is only
used at compile time, and its value doesn't depend on the value of the
argument.

Details

Committed
gliderDec 31 2018, 1:42 AM
Parents
rL350172: [DAGCombiner] Add missing one use check on the shuffle in the bitcast(shuffle…
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