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external/llvm/lib/Target/Sparc/LeonPasses.h
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external/llvm/lib/Target/Sparc/LeonPasses.h
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//===------- LeonPasses.h - Define passes specific to LEON ----------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_TARGET_SPARC_LEON_PASSES_H
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#define LLVM_LIB_TARGET_SPARC_LEON_PASSES_H
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#include "llvm/CodeGen/MachineBasicBlock.h"
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#include "llvm/CodeGen/MachineFunctionPass.h"
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#include "llvm/CodeGen/Passes.h"
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#include "Sparc.h"
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#include "SparcSubtarget.h"
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namespace llvm {
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class LLVM_LIBRARY_VISIBILITY LEONMachineFunctionPass
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: public MachineFunctionPass {
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protected:
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const SparcSubtarget *Subtarget;
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const int LAST_OPERAND = -1;
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// this vector holds free registers that we allocate in groups for some of the
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// LEON passes
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std::vector<int> UsedRegisters;
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protected:
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LEONMachineFunctionPass(char &ID);
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int GetRegIndexForOperand(MachineInstr &MI, int OperandIndex);
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void clearUsedRegisterList() { UsedRegisters.clear(); }
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void markRegisterUsed(int registerIndex) {
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UsedRegisters.push_back(registerIndex);
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}
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int getUnusedFPRegister(MachineRegisterInfo &MRI);
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};
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class LLVM_LIBRARY_VISIBILITY InsertNOPLoad : public LEONMachineFunctionPass {
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public:
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static char ID;
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InsertNOPLoad();
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bool runOnMachineFunction(MachineFunction &MF) override;
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StringRef getPassName() const override {
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return "InsertNOPLoad: Erratum Fix LBR35: insert a NOP instruction after "
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"every single-cycle load instruction when the next instruction is "
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"another load/store instruction";
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}
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};
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class LLVM_LIBRARY_VISIBILITY DetectRoundChange
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: public LEONMachineFunctionPass {
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public:
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static char ID;
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DetectRoundChange();
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bool runOnMachineFunction(MachineFunction &MF) override;
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StringRef getPassName() const override {
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return "DetectRoundChange: Leon erratum detection: detect any rounding "
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"mode change request: use only the round-to-nearest rounding mode";
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}
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};
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class LLVM_LIBRARY_VISIBILITY FixAllFDIVSQRT : public LEONMachineFunctionPass {
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public:
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static char ID;
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FixAllFDIVSQRT();
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bool runOnMachineFunction(MachineFunction &MF) override;
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StringRef getPassName() const override {
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return "FixAllFDIVSQRT: Erratum Fix LBR34: fix FDIVS/FDIVD/FSQRTS/FSQRTD "
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"instructions with NOPs and floating-point store";
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}
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};
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} // namespace llvm
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#endif // LLVM_LIB_TARGET_SPARC_LEON_PASSES_H
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