[PATCH] DAGCombine: constant fold FMA

[Mehdi AMINI]

You're completely right, thanks :)

The reason my constant folding didn't occur is because I'm trying to constant fold a NaN. 
I tried to do it in my backend, but it does not work because the Target PerformDAGCombine() is never called because even if the constant folding fails, getNode() will return something else than SDValue().


http://reviews.llvm.org/D6912

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