diff --git a/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp b/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp index fb05f334c09..ddc339c324f 100644 --- a/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp +++ b/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp @@ -1073,7 +1073,8 @@ void DAGTypeLegalizer::ExpandShiftByConstant(SDNode *N, unsigned Amt, } else if (Amt == NVTBits) { Lo = DAG.getConstant(0, NVT); Hi = InL; - } else if (Amt == 1) { + } else if (Amt == 1 && + TLI.isOperationLegal(ISD::ADDC, TLI.getTypeToExpandTo(NVT))) { // Emit this X << 1 as X+X. SDVTList VTList = DAG.getVTList(NVT, MVT::Flag); SDValue LoOps[2] = { InL, InL }; diff --git a/test/CodeGen/XCore/2008-11-17-Shl64.ll b/test/CodeGen/XCore/2008-11-17-Shl64.ll new file mode 100644 index 00000000000..97ea41b8d0c --- /dev/null +++ b/test/CodeGen/XCore/2008-11-17-Shl64.ll @@ -0,0 +1,6 @@ +; RUN: llvm-as < %s | llc -march=xcore > %t1.s +; PR3080 +define i64 @test(i64 %a) { + %result = shl i64 %a, 1 + ret i64 %result +}