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[InstSimplify] fp_binop X, NaN --> NaN

Description

[InstSimplify] fp_binop X, NaN --> NaN

We propagate the existing NaN value when possible.

Differential Revision: https://reviews.llvm.org/D44521

Details

Committed
spatelMar 21 2018, 12:31 PM
Differential Revision
D44521: [InstSimplify] fp_binop X, NaN --> NaN
Parents
rL328139: [TableGen] Remove unnecessary map lookup and shadowing of a variable. NFCI
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