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Commit 04906ef1 authored by Simon Pilgrim's avatar Simon Pilgrim
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[DAGCombine] GetNegatedExpression - add FMA\FMAD support 

If the accumulator and either of the multiply operands are negatable then we can we negate the entire expression.

Differential Revision: https://reviews.llvm.org/D63141

llvm-svn: 369746
parent eac23862
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