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SDAG: Implement Select instead of SelectImpl in BPFDAGToDAGISel

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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@269350 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Justin Bogner 2016-05-12 21:14:47 +00:00
parent 42e9bbeb4c
commit 156b5ed92c
1 changed files with 10 additions and 15 deletions
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25
lib/Target/BPF/BPFISelDAGToDAG.cpp
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@ -46,7 +46,7 @@ private:
// Include the pieces autogenerated from the target description.
#include "BPFGenDAGISel.inc"
SDNode *SelectImpl(SDNode *N) override;
void Select(SDNode *N) override;
// Complex Pattern for address selection.
bool SelectAddr(SDValue Addr, SDValue &Base, SDValue &Offset);
@ -115,7 +115,7 @@ bool BPFDAGToDAGISel::SelectFIAddr(SDValue Addr, SDValue &Base, SDValue &Offset)
return false;
}
SDNode *BPFDAGToDAGISel::SelectImpl(SDNode *Node) {
void BPFDAGToDAGISel::Select(SDNode *Node) {
unsigned Opcode = Node->getOpcode();
// Dump information about the Node being selected
@ -124,7 +124,7 @@ SDNode *BPFDAGToDAGISel::SelectImpl(SDNode *Node) {
// If we have a custom node, we already have selected!
if (Node->isMachineOpcode()) {
DEBUG(dbgs() << "== "; Node->dump(CurDAG); dbgs() << '\n');
return NULL;
return;
}
// tablegen selection should be handled here.
@ -168,22 +168,17 @@ SDNode *BPFDAGToDAGISel::SelectImpl(SDNode *Node) {
EVT VT = Node->getValueType(0);
SDValue TFI = CurDAG->getTargetFrameIndex(FI, VT);
unsigned Opc = BPF::MOV_rr;
if (Node->hasOneUse())
return CurDAG->SelectNodeTo(Node, Opc, VT, TFI);
return CurDAG->getMachineNode(Opc, SDLoc(Node), VT, TFI);
if (Node->hasOneUse()) {
CurDAG->SelectNodeTo(Node, Opc, VT, TFI);
return;
}
ReplaceNode(Node, CurDAG->getMachineNode(Opc, SDLoc(Node), VT, TFI));
return;
}
}
// Select the default instruction
SDNode *ResNode = SelectCode(Node);
DEBUG(dbgs() << "=> ";
if (ResNode == nullptr || ResNode == Node)
Node->dump(CurDAG);
else
ResNode->dump(CurDAG);
dbgs() << '\n');
return ResNode;
SelectCode(Node);
}
FunctionPass *llvm::createBPFISelDag(BPFTargetMachine &TM) {