[ARM] Add support for MVE vaddv

This patch adds vecreduce_add and the relevant instruction selection for
vaddv.

Differential revision: https://reviews.llvm.org/D66085

llvm-svn: 369245

1 files changed, 7 insertions, 0 deletions

diff --git a/llvm/lib/Target/ARM/ARMTargetTransformInfo.h b/llvm/lib/Target/ARM/ARMTargetTransformInfo.h
index b966c76c7bf..507e0188549 100644
--- a/llvm/lib/Target/ARM/ARMTargetTransformInfo.h
+++ b/llvm/lib/Target/ARM/ARMTargetTransformInfo.h
@@ -156,6 +156,13 @@ public:
 
   int getShuffleCost(TTI::ShuffleKind Kind, Type *Tp, int Index, Type *SubTp);
 
+  bool useReductionIntrinsic(unsigned Opcode, Type *Ty,
+                             TTI::ReductionFlags Flags) const;
+
+  bool shouldExpandReduction(const IntrinsicInst *II) const {
+    return false;
+  }
+
   int getCastInstrCost(unsigned Opcode, Type *Dst, Type *Src,
                        const Instruction *I = nullptr);