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67c04e77e5
shorter/easier and have the DAG use that to do the same lookup. This can be used in the future for TargetMachine based caching lookups from the MachineFunction easily. Update the MIPS subtarget switching machinery to update this pointer at the same time it runs. llvm-svn: 214838
54 lines
2.1 KiB
C++
54 lines
2.1 KiB
C++
//===-- Thumb2RegisterInfo.cpp - Thumb-2 Register Information -------------===//
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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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// This file contains the Thumb-2 implementation of the TargetRegisterInfo
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// class.
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//
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//===----------------------------------------------------------------------===//
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#include "Thumb2RegisterInfo.h"
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#include "ARM.h"
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#include "ARMSubtarget.h"
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#include "llvm/CodeGen/MachineConstantPool.h"
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#include "llvm/CodeGen/MachineFunction.h"
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#include "llvm/CodeGen/MachineInstrBuilder.h"
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#include "llvm/IR/Constants.h"
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#include "llvm/IR/DerivedTypes.h"
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#include "llvm/IR/Function.h"
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#include "llvm/Target/TargetInstrInfo.h"
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#include "llvm/Target/TargetMachine.h"
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using namespace llvm;
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Thumb2RegisterInfo::Thumb2RegisterInfo(const ARMSubtarget &sti)
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: ARMBaseRegisterInfo(sti) {
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}
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/// emitLoadConstPool - Emits a load from constpool to materialize the
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/// specified immediate.
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void
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Thumb2RegisterInfo::emitLoadConstPool(MachineBasicBlock &MBB,
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MachineBasicBlock::iterator &MBBI,
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DebugLoc dl,
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unsigned DestReg, unsigned SubIdx,
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int Val,
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ARMCC::CondCodes Pred, unsigned PredReg,
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unsigned MIFlags) const {
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MachineFunction &MF = *MBB.getParent();
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const TargetInstrInfo &TII = *MF.getSubtarget().getInstrInfo();
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MachineConstantPool *ConstantPool = MF.getConstantPool();
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const Constant *C = ConstantInt::get(
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Type::getInt32Ty(MBB.getParent()->getFunction()->getContext()), Val);
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unsigned Idx = ConstantPool->getConstantPoolIndex(C, 4);
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BuildMI(MBB, MBBI, dl, TII.get(ARM::t2LDRpci))
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.addReg(DestReg, getDefRegState(true), SubIdx)
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.addConstantPoolIndex(Idx).addImm((int64_t)ARMCC::AL).addReg(0)
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.setMIFlags(MIFlags);
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}
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