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SDAG: Implement Select instead of SelectImpl in LanaiDAGToDAGISel

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- Where we were returning a node before, call ReplaceNode instead.
- Where we were calling SelectNodeTo, just return afterwards.

Part of llvm.org/pr26808.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@269364 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Justin Bogner 2016-05-12 21:56:18 +00:00
parent f00111d734
commit f368c39798
1 changed files with 13 additions and 21 deletions
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34
lib/Target/Lanai/LanaiISelDAGToDAG.cpp
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@ -68,11 +68,11 @@ private:
#include "LanaiGenDAGISel.inc"
// Instruction Selection not handled by the auto-generated tablgen
SDNode *SelectImpl(SDNode *N) override;
void Select(SDNode *N) override;
// Support functions for the opcodes of Instruction Selection
// not handled by the auto-generated tablgen
SDNode *selectFrameIndex(SDNode *N);
void selectFrameIndex(SDNode *N);
// Complex Pattern for address selection.
bool selectAddrRi(SDValue Addr, SDValue &Base, SDValue &Offset,
@ -270,7 +270,7 @@ bool LanaiDAGToDAGISel::SelectInlineAsmMemoryOperand(
// Select instructions not customized! Used for
// expanded, promoted and normal instructions
SDNode *LanaiDAGToDAGISel::SelectImpl(SDNode *Node) {
void LanaiDAGToDAGISel::Select(SDNode *Node) {
unsigned Opcode = Node->getOpcode();
// Dump information about the Node being selected
@ -279,43 +279,35 @@ SDNode *LanaiDAGToDAGISel::SelectImpl(SDNode *Node) {
// If we have a custom node, we already have selected!
if (Node->isMachineOpcode()) {
DEBUG(errs() << "== "; Node->dump(CurDAG); errs() << "\n");
return NULL;
return;
}
// Instruction Selection not handled by the auto-generated
// tablegen selection should be handled here.
SDNode *ResNode = nullptr;
switch (Opcode) {
case ISD::FrameIndex:
ResNode = selectFrameIndex(Node);
break;
selectFrameIndex(Node);
return;
default:
break;
}
// Select the default instruction
if (ResNode == nullptr)
ResNode = SelectCode(Node);
DEBUG(errs() << "=> ");
if (ResNode == NULL || ResNode == Node)
DEBUG(Node->dump(CurDAG));
else
DEBUG(ResNode->dump(CurDAG));
DEBUG(errs() << "\n");
return ResNode;
SelectCode(Node);
}
SDNode *LanaiDAGToDAGISel::selectFrameIndex(SDNode *Node) {
void LanaiDAGToDAGISel::selectFrameIndex(SDNode *Node) {
SDLoc DL(Node);
SDValue Imm = CurDAG->getTargetConstant(0, DL, MVT::i32);
int FI = dyn_cast<FrameIndexSDNode>(Node)->getIndex();
EVT VT = Node->getValueType(0);
SDValue TFI = CurDAG->getTargetFrameIndex(FI, VT);
unsigned Opc = Lanai::ADD_I_LO;
if (Node->hasOneUse())
return CurDAG->SelectNodeTo(Node, Opc, VT, TFI, Imm);
return CurDAG->getMachineNode(Opc, DL, VT, TFI, Imm);
if (Node->hasOneUse()) {
CurDAG->SelectNodeTo(Node, Opc, VT, TFI, Imm);
return;
}
ReplaceNode(Node, CurDAG->getMachineNode(Opc, DL, VT, TFI, Imm));
}
// createLanaiISelDag - This pass converts a legalized DAG into a