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e035f65b16
Mips shift instructions DSLL, DSRL and DSRA are transformed into DSLL32, DSRL32 and DSRA32 respectively if the shift amount is between 32 and 63 Here is a description of DSLL: Purpose: Doubleword Shift Left Logical Plus 32 To execute a left-shift of a doubleword by a fixed amount--32 to 63 bits Description: GPR[rd] <- GPR[rt] << (sa+32) The 64-bit doubleword contents of GPR rt are shifted left, inserting zeros into the emptied bits; the result is placed in GPR rd. The bit-shift amount in the range 0 to 31 is specified by sa. This patch implements the direct object output of these instructions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160277 91177308-0d34-0410-b5e6-96231b3b80d8
46 lines
1.4 KiB
C++
46 lines
1.4 KiB
C++
//===-- MipsMCInstLower.h - Lower MachineInstr to MCInst -------*- C++ -*--===//
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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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#ifndef MIPSMCINSTLOWER_H
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#define MIPSMCINSTLOWER_H
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#include "llvm/ADT/SmallVector.h"
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#include "llvm/CodeGen/MachineOperand.h"
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#include "llvm/Support/Compiler.h"
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namespace llvm {
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class MCContext;
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class MCInst;
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class MCOperand;
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class MachineInstr;
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class MachineFunction;
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class Mangler;
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class MipsAsmPrinter;
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/// MipsMCInstLower - This class is used to lower an MachineInstr into an
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// MCInst.
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class LLVM_LIBRARY_VISIBILITY MipsMCInstLower {
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typedef MachineOperand::MachineOperandType MachineOperandType;
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MCContext *Ctx;
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Mangler *Mang;
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MipsAsmPrinter &AsmPrinter;
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public:
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MipsMCInstLower(MipsAsmPrinter &asmprinter);
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void Initialize(Mangler *mang, MCContext *C);
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void Lower(const MachineInstr *MI, MCInst &OutMI) const;
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void LowerLargeShift(const MachineInstr *MI, MCInst &Inst, int64_t Shift);
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private:
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MCOperand LowerSymbolOperand(const MachineOperand &MO,
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MachineOperandType MOTy, unsigned Offset) const;
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MCOperand LowerOperand(const MachineOperand& MO, unsigned offset = 0) const;
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};
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}
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#endif
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