Index: lib/Target/NVPTX/NVPTXISelLowering.cpp =================================================================== --- lib/Target/NVPTX/NVPTXISelLowering.cpp +++ lib/Target/NVPTX/NVPTXISelLowering.cpp @@ -375,6 +375,7 @@ setOperationAction(ISD::FP_TO_SINT, MVT::f16, Legal); setOperationAction(ISD::BUILD_VECTOR, MVT::v2f16, Custom); setOperationAction(ISD::EXTRACT_VECTOR_ELT, MVT::v2f16, Custom); + setOperationAction(ISD::VECTOR_SHUFFLE, MVT::v2f16, Expand); setFP16OperationAction(ISD::SETCC, MVT::f16, Legal, Promote); setFP16OperationAction(ISD::SETCC, MVT::v2f16, Legal, Expand); Index: test/CodeGen/NVPTX/f16x2-instructions.ll =================================================================== --- test/CodeGen/NVPTX/f16x2-instructions.ll +++ test/CodeGen/NVPTX/f16x2-instructions.ll @@ -1423,5 +1423,13 @@ ret <2 x half> %r } +; CHECK-LABEL: test_shufflevector( +; CHECK: mov.b32 {%h1, %h2}, %hh1; +; CHECK: mov.b32 %hh2, {%h2, %h1}; +define <2 x half> @test_shufflevector(<2 x half> %a) #0 { + %s = shufflevector <2 x half> %a, <2 x half> undef, <2 x i32> + ret <2 x half> %s +} + attributes #0 = { nounwind } attributes #1 = { "unsafe-fp-math" = "true" }