From ae35575957a3ab446e2766aa05d03020ced27d14 Mon Sep 17 00:00:00 2001 From: Andrew Lenharth Date: Wed, 30 Nov 2005 17:12:26 +0000 Subject: [PATCH] At long last, you can say that f32 isn't supported for setcc git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24537 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/CodeGen/SelectionDAG/LegalizeDAG.cpp | 29 +++++++++++++++++++++++- 1 file changed, 28 insertions(+), 1 deletion(-) diff --git a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp index e12e69a4dcb..e3d20e480f0 100644 --- a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp +++ b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp @@ -1438,10 +1438,37 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) { default: assert(0 && "Cannot handle this action for SETCC yet!"); break; - case TargetLowering::Promote: + case TargetLowering::Promote: { + // First step, figure out the appropriate operation to use. + // Allow SETCC to not be supported for all legal data types + // Mostly this targets FP + MVT::ValueType NewInTy = Node->getOperand(0).getValueType(); + MVT::ValueType OldVT = NewInTy; + + // Scan for the appropriate larger type to use. + while (1) { + NewInTy = (MVT::ValueType)(NewInTy+1); + + assert(MVT::isInteger(NewInTy) == MVT::isInteger(OldVT) && + "Fell off of the edge of the integer world"); + assert(MVT::isFloatingPoint(NewInTy) == MVT::isFloatingPoint(OldVT) && + "Fell off of the edge of the floating point world"); + + // If the target supports SETCC of this type, use it. + if (TLI.getOperationAction(ISD::SETCC, NewInTy) == TargetLowering::Legal) + break; + } + if (MVT::isInteger(NewInTy)) + assert(0 && "Cannot promote Legal Integer SETCC yet"); + else { + Tmp1 = DAG.getNode(ISD::FP_EXTEND, NewInTy, Tmp1); + Tmp2 = DAG.getNode(ISD::FP_EXTEND, NewInTy, Tmp2); + } + Result = DAG.getNode(ISD::SETCC, Node->getValueType(0), Tmp1, Tmp2, Node->getOperand(2)); break; + } case TargetLowering::Legal: if (Tmp1 != Node->getOperand(0) || Tmp2 != Node->getOperand(1)) Result = DAG.getNode(ISD::SETCC, Node->getValueType(0), Tmp1, Tmp2,