1 files changed, 8 insertions, 0 deletions
diff --git a/llvm/lib/Target/ARM/ARMISelLowering.cpp b/llvm/lib/Target/ARM/ARMISelLowering.cpp
index 2c88c75d886..5895cad1922 100644
--- a/llvm/lib/Target/ARM/ARMISelLowering.cpp
+++ b/llvm/lib/Target/ARM/ARMISelLowering.cpp
@@ -12921,6 +12921,14 @@ bool ARMTargetLowering::shouldConvertConstantLoadToIntImm(const APInt &Imm,
   return true;
 }
 
+bool ARMTargetLowering::isExtractSubvectorCheap(EVT ResVT,
+                                                unsigned Index) const {
+  if (!isOperationLegalOrCustom(ISD::EXTRACT_SUBVECTOR, ResVT))
+    return false;
+
+  return (Index == 0 || Index == ResVT.getVectorNumElements());
+}
+
 Instruction* ARMTargetLowering::makeDMB(IRBuilder<> &Builder,
                                         ARM_MB::MemBOpt Domain) const {
   Module *M = Builder.GetInsertBlock()->getParent()->getParent();