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Differential D75932 Diff 250875 llvm/lib/CodeGen/RDFGraph.cpp

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llvm/lib/CodeGen/RDFGraph.cpp

  • This file was moved from llvm/lib/Target/Hexagon/RDFGraph.cpp.
//===- RDFGraph.cpp -------------------------------------------------------===// //===- RDFGraph.cpp -------------------------------------------------------===//
// //
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information. // See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
// //
//===----------------------------------------------------------------------===// //===----------------------------------------------------------------------===//
// //
// Target-independent, SSA-based data flow graph for register data flow (RDF). // Target-independent, SSA-based data flow graph for register data flow (RDF).
// //
#include "RDFGraph.h"
#include "RDFRegisters.h"
#include "llvm/ADT/BitVector.h" #include "llvm/ADT/BitVector.h"
#include "llvm/ADT/STLExtras.h" #include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/SetVector.h" #include "llvm/ADT/SetVector.h"
#include "llvm/CodeGen/MachineBasicBlock.h" #include "llvm/CodeGen/MachineBasicBlock.h"
#include "llvm/CodeGen/MachineDominanceFrontier.h" #include "llvm/CodeGen/MachineDominanceFrontier.h"
#include "llvm/CodeGen/MachineDominators.h" #include "llvm/CodeGen/MachineDominators.h"
#include "llvm/CodeGen/MachineFunction.h" #include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineInstr.h" #include "llvm/CodeGen/MachineInstr.h"
#include "llvm/CodeGen/MachineOperand.h" #include "llvm/CodeGen/MachineOperand.h"
#include "llvm/CodeGen/MachineRegisterInfo.h" #include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/CodeGen/RDFGraph.h"
#include "llvm/CodeGen/RDFRegisters.h"
#include "llvm/CodeGen/TargetInstrInfo.h" #include "llvm/CodeGen/TargetInstrInfo.h"
#include "llvm/CodeGen/TargetLowering.h" #include "llvm/CodeGen/TargetLowering.h"
#include "llvm/CodeGen/TargetRegisterInfo.h" #include "llvm/CodeGen/TargetRegisterInfo.h"
#include "llvm/CodeGen/TargetSubtargetInfo.h" #include "llvm/CodeGen/TargetSubtargetInfo.h"
#include "llvm/IR/Function.h" #include "llvm/IR/Function.h"
#include "llvm/MC/LaneBitmask.h" #include "llvm/MC/LaneBitmask.h"
#include "llvm/MC/MCInstrDesc.h" #include "llvm/MC/MCInstrDesc.h"
#include "llvm/MC/MCRegisterInfo.h" #include "llvm/MC/MCRegisterInfo.h"
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RegisterSet DataFlowGraph::getLandingPadLiveIns() const { RegisterSet DataFlowGraph::getLandingPadLiveIns() const {
RegisterSet LR; RegisterSet LR;
const Function &F = MF.getFunction(); const Function &F = MF.getFunction();
const Constant *PF = F.hasPersonalityFn() ? F.getPersonalityFn() const Constant *PF = F.hasPersonalityFn() ? F.getPersonalityFn()
: nullptr; : nullptr;
const TargetLowering &TLI = *MF.getSubtarget().getTargetLowering(); const TargetLowering &TLI = *MF.getSubtarget().getTargetLowering();
if (RegisterId R = TLI.getExceptionPointerRegister(PF)) if (RegisterId R = TLI.getExceptionPointerRegister(PF))
LR.insert(RegisterRef(R)); LR.insert(RegisterRef(R));
if (!isFuncletEHPersonality(classifyEHPersonality(PF))) {
if (RegisterId R = TLI.getExceptionSelectorRegister(PF)) if (RegisterId R = TLI.getExceptionSelectorRegister(PF))
LR.insert(RegisterRef(R)); LR.insert(RegisterRef(R));
}
zbridUnsubmitted
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Thanks for this patch! Qq, is this some functionality change? Why does the refactor require this update?

zbrid: Thanks for this patch! Qq, is this some functionality change? Why does the refactor require…
andrew.w.kaylorUnsubmitted
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The original RDF implementation didn't need to handle Windows targets. The TLI::getExceptionSelectionRegister() method has an assertion testing that it is not called for Windows EH personality functions. There is no exception selector register on Windows.

andrew.w.kaylor: The original RDF implementation didn't need to handle Windows targets. The TLI…
return LR; return LR;
} }
// Node management functions. // Node management functions.
// Get the pointer to the node with the id N. // Get the pointer to the node with the id N.
NodeBase *DataFlowGraph::ptr(NodeId N) const { NodeBase *DataFlowGraph::ptr(NodeId N) const {
if (N == 0) if (N == 0)
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