From 3ee37463749e1d447b078d25205758fe28d6c20c Mon Sep 17 00:00:00 2001 From: Matt Arsenault Date: Wed, 28 May 2014 20:51:42 +0000 Subject: [PATCH] Fix wrong setcc result type when legalizing uaddo/usubo No test because no in-tree targets change the bitwidth of the setcc type depending on the bitwidth of the compared type. Patch by Ke Bai llvm-svn: 209771 --- llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp | 16 +++++++++++----- 1 file changed, 11 insertions(+), 5 deletions(-) diff --git a/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp index a59e895..accdd0a 100644 --- a/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp @@ -3653,7 +3653,8 @@ void SelectionDAGLegalize::ExpandNode(SDNode *Node) { ISD::ADD : ISD::SUB, dl, LHS.getValueType(), LHS, RHS); Results.push_back(Sum); - EVT OType = Node->getValueType(1); + EVT ResultType = Node->getValueType(1); + EVT OType = getSetCCResultType(Node->getValueType(0)); SDValue Zero = DAG.getConstant(0, LHS.getValueType()); @@ -3676,7 +3677,7 @@ void SelectionDAGLegalize::ExpandNode(SDNode *Node) { SDValue SumSignNE = DAG.getSetCC(dl, OType, LHSSign, SumSign, ISD::SETNE); SDValue Cmp = DAG.getNode(ISD::AND, dl, OType, SignsMatch, SumSignNE); - Results.push_back(Cmp); + Results.push_back(DAG.getBoolExtOrTrunc(Cmp, dl, ResultType)); break; } case ISD::UADDO: @@ -3687,9 +3688,14 @@ void SelectionDAGLegalize::ExpandNode(SDNode *Node) { ISD::ADD : ISD::SUB, dl, LHS.getValueType(), LHS, RHS); Results.push_back(Sum); - Results.push_back(DAG.getSetCC(dl, Node->getValueType(1), Sum, LHS, - Node->getOpcode () == ISD::UADDO ? - ISD::SETULT : ISD::SETUGT)); + + EVT ResultType = Node->getValueType(1); + EVT SetCCType = getSetCCResultType(Node->getValueType(0)); + ISD::CondCode CC + = Node->getOpcode() == ISD::UADDO ? ISD::SETULT : ISD::SETUGT; + SDValue SetCC = DAG.getSetCC(dl, SetCCType, Sum, LHS, CC); + + Results.push_back(DAG.getBoolExtOrTrunc(SetCC, dl, ResultType)); break; } case ISD::UMULO: -- 2.7.4