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Teach InstSimplify -X + X --> 0.0 about unary FNeg

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Teach InstSimplify -X + X --> 0.0 about unary FNeg

Differential Revision: https://reviews.llvm.org/D61916

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Committed
mcinallyMay 15 2019, 7:31 AM
Differential Revision
D61916: Teach InstSimplify transform -X + X --> 0.0 about unary FNeg
Parents
rL360776: Revert r360771 "[MergeICmps] Simplify the code."
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