Commit 5154c323 authored by Craig Topper's avatar Craig Topper Committed by Yi Kong
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[X86] Make sure we don't combine (fneg (fma X, Y, Z)) to a target specific... 

[X86] Make sure we don't combine (fneg (fma X, Y, Z)) to a target specific node when there are no FMA instructions.

This would cause a 'cannot select' error at isel when we should have emitted a lib call and an xor.

Fixes PR36553.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@326393 91177308-0d34-0410-b5e6-96231b3b80d8
parent f08e14a6
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