Add an intrinsic and codegen support for fused multiply-accumulate. The intent
is to use this for architectures that have a native FMA instruction.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134742 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/MBlaze/MBlazeISelLowering.cpp b/lib/Target/MBlaze/MBlazeISelLowering.cpp
index ba2de40..62dfdcc 100644
--- a/lib/Target/MBlaze/MBlazeISelLowering.cpp
+++ b/lib/Target/MBlaze/MBlazeISelLowering.cpp
@@ -69,6 +69,7 @@
 
   // Floating point operations which are not supported
   setOperationAction(ISD::FREM,       MVT::f32, Expand);
+  setOperationAction(ISD::FMA,        MVT::f32, Expand);
   setOperationAction(ISD::UINT_TO_FP, MVT::i8,  Expand);
   setOperationAction(ISD::UINT_TO_FP, MVT::i16, Expand);
   setOperationAction(ISD::UINT_TO_FP, MVT::i32, Expand);