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llvm-6502/lib/Target/ARM/ARMExpandPseudoInsts.cpp
Jason W Kim 045869c12a Style nit and whitespace cleanup 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121317 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-08 23:35:25 +00:00

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//===-- ARMExpandPseudoInsts.cpp - Expand pseudo instructions -----*- C++ -*-=//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file contains a pass that expands pseudo instructions into target
// instructions to allow proper scheduling, if-conversion, and other late
// optimizations. This pass should be run after register allocation but before
// the post-regalloc scheduling pass.
//
//===----------------------------------------------------------------------===//
#define DEBUG_TYPE "arm-pseudo"
#include "ARM.h"
#include "ARMAddressingModes.h"
#include "ARMBaseInstrInfo.h"
#include "ARMBaseRegisterInfo.h"
#include "ARMMachineFunctionInfo.h"
#include "ARMRegisterInfo.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/Target/TargetFrameInfo.h"
#include "llvm/Target/TargetRegisterInfo.h"
#include "llvm/Support/raw_ostream.h" // FIXME: for debug only. remove!
using namespace llvm;
namespace {
class ARMExpandPseudo : public MachineFunctionPass {
public:
static char ID;
ARMExpandPseudo() : MachineFunctionPass(ID) {}
const ARMBaseInstrInfo *TII;
const TargetRegisterInfo *TRI;
const ARMSubtarget *STI;
virtual bool runOnMachineFunction(MachineFunction &Fn);
virtual const char *getPassName() const {
return "ARM pseudo instruction expansion pass";
}
private:
void TransferImpOps(MachineInstr &OldMI,
MachineInstrBuilder &UseMI, MachineInstrBuilder &DefMI);
bool ExpandMBB(MachineBasicBlock &MBB);
void ExpandVLD(MachineBasicBlock::iterator &MBBI);
void ExpandVST(MachineBasicBlock::iterator &MBBI);
void ExpandLaneOp(MachineBasicBlock::iterator &MBBI);
void ExpandVTBL(MachineBasicBlock::iterator &MBBI,
unsigned Opc, bool IsExt, unsigned NumRegs);
};
char ARMExpandPseudo::ID = 0;
}
/// TransferImpOps - Transfer implicit operands on the pseudo instruction to
/// the instructions created from the expansion.
void ARMExpandPseudo::TransferImpOps(MachineInstr &OldMI,
MachineInstrBuilder &UseMI,
MachineInstrBuilder &DefMI) {
const TargetInstrDesc &Desc = OldMI.getDesc();
for (unsigned i = Desc.getNumOperands(), e = OldMI.getNumOperands();
i != e; ++i) {
const MachineOperand &MO = OldMI.getOperand(i);
assert(MO.isReg() && MO.getReg());
if (MO.isUse())
UseMI.addOperand(MO);
else
DefMI.addOperand(MO);
}
}
namespace {
// Constants for register spacing in NEON load/store instructions.
// For quad-register load-lane and store-lane pseudo instructors, the
// spacing is initially assumed to be EvenDblSpc, and that is changed to
// OddDblSpc depending on the lane number operand.
enum NEONRegSpacing {
SingleSpc,
EvenDblSpc,
OddDblSpc
};
// Entries for NEON load/store information table. The table is sorted by
// PseudoOpc for fast binary-search lookups.
struct NEONLdStTableEntry {
unsigned PseudoOpc;
unsigned RealOpc;
bool IsLoad;
bool HasWriteBack;
NEONRegSpacing RegSpacing;
unsigned char NumRegs; // D registers loaded or stored
unsigned char RegElts; // elements per D register; used for lane ops
// Comparison methods for binary search of the table.
bool operator<(const NEONLdStTableEntry &TE) const {
return PseudoOpc < TE.PseudoOpc;
}
friend bool operator<(const NEONLdStTableEntry &TE, unsigned PseudoOpc) {
return TE.PseudoOpc < PseudoOpc;
}
friend bool LLVM_ATTRIBUTE_UNUSED operator<(unsigned PseudoOpc,
const NEONLdStTableEntry &TE) {
return PseudoOpc < TE.PseudoOpc;
}
};
}
static const NEONLdStTableEntry NEONLdStTable[] = {
{ ARM::VLD1DUPq16Pseudo, ARM::VLD1DUPq16, true, false, SingleSpc, 2, 4},
{ ARM::VLD1DUPq16Pseudo_UPD, ARM::VLD1DUPq16_UPD, true, true, SingleSpc, 2, 4},
{ ARM::VLD1DUPq32Pseudo, ARM::VLD1DUPq32, true, false, SingleSpc, 2, 2},
{ ARM::VLD1DUPq32Pseudo_UPD, ARM::VLD1DUPq32_UPD, true, true, SingleSpc, 2, 2},
{ ARM::VLD1DUPq8Pseudo, ARM::VLD1DUPq8, true, false, SingleSpc, 2, 8},
{ ARM::VLD1DUPq8Pseudo_UPD, ARM::VLD1DUPq8_UPD, true, true, SingleSpc, 2, 8},
{ ARM::VLD1LNq16Pseudo, ARM::VLD1LNd16, true, false, EvenDblSpc, 1, 4 },
{ ARM::VLD1LNq16Pseudo_UPD, ARM::VLD1LNd16_UPD, true, true, EvenDblSpc, 1, 4 },
{ ARM::VLD1LNq32Pseudo, ARM::VLD1LNd32, true, false, EvenDblSpc, 1, 2 },
{ ARM::VLD1LNq32Pseudo_UPD, ARM::VLD1LNd32_UPD, true, true, EvenDblSpc, 1, 2 },
{ ARM::VLD1LNq8Pseudo, ARM::VLD1LNd8, true, false, EvenDblSpc, 1, 8 },
{ ARM::VLD1LNq8Pseudo_UPD, ARM::VLD1LNd8_UPD, true, true, EvenDblSpc, 1, 8 },
{ ARM::VLD1d64QPseudo, ARM::VLD1d64Q, true, false, SingleSpc, 4, 1 },
{ ARM::VLD1d64QPseudo_UPD, ARM::VLD1d64Q_UPD, true, true, SingleSpc, 4, 1 },
{ ARM::VLD1d64TPseudo, ARM::VLD1d64T, true, false, SingleSpc, 3, 1 },
{ ARM::VLD1d64TPseudo_UPD, ARM::VLD1d64T_UPD, true, true, SingleSpc, 3, 1 },
{ ARM::VLD1q16Pseudo, ARM::VLD1q16, true, false, SingleSpc, 2, 4 },
{ ARM::VLD1q16Pseudo_UPD, ARM::VLD1q16_UPD, true, true, SingleSpc, 2, 4 },
{ ARM::VLD1q32Pseudo, ARM::VLD1q32, true, false, SingleSpc, 2, 2 },
{ ARM::VLD1q32Pseudo_UPD, ARM::VLD1q32_UPD, true, true, SingleSpc, 2, 2 },
{ ARM::VLD1q64Pseudo, ARM::VLD1q64, true, false, SingleSpc, 2, 1 },
{ ARM::VLD1q64Pseudo_UPD, ARM::VLD1q64_UPD, true, true, SingleSpc, 2, 1 },
{ ARM::VLD1q8Pseudo, ARM::VLD1q8, true, false, SingleSpc, 2, 8 },
{ ARM::VLD1q8Pseudo_UPD, ARM::VLD1q8_UPD, true, true, SingleSpc, 2, 8 },
{ ARM::VLD2DUPd16Pseudo, ARM::VLD2DUPd16, true, false, SingleSpc, 2, 4},
{ ARM::VLD2DUPd16Pseudo_UPD, ARM::VLD2DUPd16_UPD, true, true, SingleSpc, 2, 4},
{ ARM::VLD2DUPd32Pseudo, ARM::VLD2DUPd32, true, false, SingleSpc, 2, 2},
{ ARM::VLD2DUPd32Pseudo_UPD, ARM::VLD2DUPd32_UPD, true, true, SingleSpc, 2, 2},
{ ARM::VLD2DUPd8Pseudo, ARM::VLD2DUPd8, true, false, SingleSpc, 2, 8},
{ ARM::VLD2DUPd8Pseudo_UPD, ARM::VLD2DUPd8_UPD, true, true, SingleSpc, 2, 8},
{ ARM::VLD2LNd16Pseudo, ARM::VLD2LNd16, true, false, SingleSpc, 2, 4 },
{ ARM::VLD2LNd16Pseudo_UPD, ARM::VLD2LNd16_UPD, true, true, SingleSpc, 2, 4 },
{ ARM::VLD2LNd32Pseudo, ARM::VLD2LNd32, true, false, SingleSpc, 2, 2 },
{ ARM::VLD2LNd32Pseudo_UPD, ARM::VLD2LNd32_UPD, true, true, SingleSpc, 2, 2 },
{ ARM::VLD2LNd8Pseudo, ARM::VLD2LNd8, true, false, SingleSpc, 2, 8 },
{ ARM::VLD2LNd8Pseudo_UPD, ARM::VLD2LNd8_UPD, true, true, SingleSpc, 2, 8 },
{ ARM::VLD2LNq16Pseudo, ARM::VLD2LNq16, true, false, EvenDblSpc, 2, 4 },
{ ARM::VLD2LNq16Pseudo_UPD, ARM::VLD2LNq16_UPD, true, true, EvenDblSpc, 2, 4 },
{ ARM::VLD2LNq32Pseudo, ARM::VLD2LNq32, true, false, EvenDblSpc, 2, 2 },
{ ARM::VLD2LNq32Pseudo_UPD, ARM::VLD2LNq32_UPD, true, true, EvenDblSpc, 2, 2 },
{ ARM::VLD2d16Pseudo, ARM::VLD2d16, true, false, SingleSpc, 2, 4 },
{ ARM::VLD2d16Pseudo_UPD, ARM::VLD2d16_UPD, true, true, SingleSpc, 2, 4 },
{ ARM::VLD2d32Pseudo, ARM::VLD2d32, true, false, SingleSpc, 2, 2 },
{ ARM::VLD2d32Pseudo_UPD, ARM::VLD2d32_UPD, true, true, SingleSpc, 2, 2 },
{ ARM::VLD2d8Pseudo, ARM::VLD2d8, true, false, SingleSpc, 2, 8 },
{ ARM::VLD2d8Pseudo_UPD, ARM::VLD2d8_UPD, true, true, SingleSpc, 2, 8 },
{ ARM::VLD2q16Pseudo, ARM::VLD2q16, true, false, SingleSpc, 4, 4 },
{ ARM::VLD2q16Pseudo_UPD, ARM::VLD2q16_UPD, true, true, SingleSpc, 4, 4 },
{ ARM::VLD2q32Pseudo, ARM::VLD2q32, true, false, SingleSpc, 4, 2 },
{ ARM::VLD2q32Pseudo_UPD, ARM::VLD2q32_UPD, true, true, SingleSpc, 4, 2 },
{ ARM::VLD2q8Pseudo, ARM::VLD2q8, true, false, SingleSpc, 4, 8 },
{ ARM::VLD2q8Pseudo_UPD, ARM::VLD2q8_UPD, true, true, SingleSpc, 4, 8 },
{ ARM::VLD3DUPd16Pseudo, ARM::VLD3DUPd16, true, false, SingleSpc, 3, 4},
{ ARM::VLD3DUPd16Pseudo_UPD, ARM::VLD3DUPd16_UPD, true, true, SingleSpc, 3, 4},
{ ARM::VLD3DUPd32Pseudo, ARM::VLD3DUPd32, true, false, SingleSpc, 3, 2},
{ ARM::VLD3DUPd32Pseudo_UPD, ARM::VLD3DUPd32_UPD, true, true, SingleSpc, 3, 2},
{ ARM::VLD3DUPd8Pseudo, ARM::VLD3DUPd8, true, false, SingleSpc, 3, 8},
{ ARM::VLD3DUPd8Pseudo_UPD, ARM::VLD3DUPd8_UPD, true, true, SingleSpc, 3, 8},
{ ARM::VLD3LNd16Pseudo, ARM::VLD3LNd16, true, false, SingleSpc, 3, 4 },
{ ARM::VLD3LNd16Pseudo_UPD, ARM::VLD3LNd16_UPD, true, true, SingleSpc, 3, 4 },
{ ARM::VLD3LNd32Pseudo, ARM::VLD3LNd32, true, false, SingleSpc, 3, 2 },
{ ARM::VLD3LNd32Pseudo_UPD, ARM::VLD3LNd32_UPD, true, true, SingleSpc, 3, 2 },
{ ARM::VLD3LNd8Pseudo, ARM::VLD3LNd8, true, false, SingleSpc, 3, 8 },
{ ARM::VLD3LNd8Pseudo_UPD, ARM::VLD3LNd8_UPD, true, true, SingleSpc, 3, 8 },
{ ARM::VLD3LNq16Pseudo, ARM::VLD3LNq16, true, false, EvenDblSpc, 3, 4 },
{ ARM::VLD3LNq16Pseudo_UPD, ARM::VLD3LNq16_UPD, true, true, EvenDblSpc, 3, 4 },
{ ARM::VLD3LNq32Pseudo, ARM::VLD3LNq32, true, false, EvenDblSpc, 3, 2 },
{ ARM::VLD3LNq32Pseudo_UPD, ARM::VLD3LNq32_UPD, true, true, EvenDblSpc, 3, 2 },
{ ARM::VLD3d16Pseudo, ARM::VLD3d16, true, false, SingleSpc, 3, 4 },
{ ARM::VLD3d16Pseudo_UPD, ARM::VLD3d16_UPD, true, true, SingleSpc, 3, 4 },
{ ARM::VLD3d32Pseudo, ARM::VLD3d32, true, false, SingleSpc, 3, 2 },
{ ARM::VLD3d32Pseudo_UPD, ARM::VLD3d32_UPD, true, true, SingleSpc, 3, 2 },
{ ARM::VLD3d8Pseudo, ARM::VLD3d8, true, false, SingleSpc, 3, 8 },
{ ARM::VLD3d8Pseudo_UPD, ARM::VLD3d8_UPD, true, true, SingleSpc, 3, 8 },
{ ARM::VLD3q16Pseudo_UPD, ARM::VLD3q16_UPD, true, true, EvenDblSpc, 3, 4 },
{ ARM::VLD3q16oddPseudo_UPD, ARM::VLD3q16_UPD, true, true, OddDblSpc, 3, 4 },
{ ARM::VLD3q32Pseudo_UPD, ARM::VLD3q32_UPD, true, true, EvenDblSpc, 3, 2 },
{ ARM::VLD3q32oddPseudo_UPD, ARM::VLD3q32_UPD, true, true, OddDblSpc, 3, 2 },
{ ARM::VLD3q8Pseudo_UPD, ARM::VLD3q8_UPD, true, true, EvenDblSpc, 3, 8 },
{ ARM::VLD3q8oddPseudo_UPD, ARM::VLD3q8_UPD, true, true, OddDblSpc, 3, 8 },
{ ARM::VLD4DUPd16Pseudo, ARM::VLD4DUPd16, true, false, SingleSpc, 4, 4},
{ ARM::VLD4DUPd16Pseudo_UPD, ARM::VLD4DUPd16_UPD, true, true, SingleSpc, 4, 4},
{ ARM::VLD4DUPd32Pseudo, ARM::VLD4DUPd32, true, false, SingleSpc, 4, 2},
{ ARM::VLD4DUPd32Pseudo_UPD, ARM::VLD4DUPd32_UPD, true, true, SingleSpc, 4, 2},
{ ARM::VLD4DUPd8Pseudo, ARM::VLD4DUPd8, true, false, SingleSpc, 4, 8},
{ ARM::VLD4DUPd8Pseudo_UPD, ARM::VLD4DUPd8_UPD, true, true, SingleSpc, 4, 8},
{ ARM::VLD4LNd16Pseudo, ARM::VLD4LNd16, true, false, SingleSpc, 4, 4 },
{ ARM::VLD4LNd16Pseudo_UPD, ARM::VLD4LNd16_UPD, true, true, SingleSpc, 4, 4 },
{ ARM::VLD4LNd32Pseudo, ARM::VLD4LNd32, true, false, SingleSpc, 4, 2 },
{ ARM::VLD4LNd32Pseudo_UPD, ARM::VLD4LNd32_UPD, true, true, SingleSpc, 4, 2 },
{ ARM::VLD4LNd8Pseudo, ARM::VLD4LNd8, true, false, SingleSpc, 4, 8 },
{ ARM::VLD4LNd8Pseudo_UPD, ARM::VLD4LNd8_UPD, true, true, SingleSpc, 4, 8 },
{ ARM::VLD4LNq16Pseudo, ARM::VLD4LNq16, true, false, EvenDblSpc, 4, 4 },
{ ARM::VLD4LNq16Pseudo_UPD, ARM::VLD4LNq16_UPD, true, true, EvenDblSpc, 4, 4 },
{ ARM::VLD4LNq32Pseudo, ARM::VLD4LNq32, true, false, EvenDblSpc, 4, 2 },
{ ARM::VLD4LNq32Pseudo_UPD, ARM::VLD4LNq32_UPD, true, true, EvenDblSpc, 4, 2 },
{ ARM::VLD4d16Pseudo, ARM::VLD4d16, true, false, SingleSpc, 4, 4 },
{ ARM::VLD4d16Pseudo_UPD, ARM::VLD4d16_UPD, true, true, SingleSpc, 4, 4 },
{ ARM::VLD4d32Pseudo, ARM::VLD4d32, true, false, SingleSpc, 4, 2 },
{ ARM::VLD4d32Pseudo_UPD, ARM::VLD4d32_UPD, true, true, SingleSpc, 4, 2 },
{ ARM::VLD4d8Pseudo, ARM::VLD4d8, true, false, SingleSpc, 4, 8 },
{ ARM::VLD4d8Pseudo_UPD, ARM::VLD4d8_UPD, true, true, SingleSpc, 4, 8 },
{ ARM::VLD4q16Pseudo_UPD, ARM::VLD4q16_UPD, true, true, EvenDblSpc, 4, 4 },
{ ARM::VLD4q16oddPseudo_UPD, ARM::VLD4q16_UPD, true, true, OddDblSpc, 4, 4 },
{ ARM::VLD4q32Pseudo_UPD, ARM::VLD4q32_UPD, true, true, EvenDblSpc, 4, 2 },
{ ARM::VLD4q32oddPseudo_UPD, ARM::VLD4q32_UPD, true, true, OddDblSpc, 4, 2 },
{ ARM::VLD4q8Pseudo_UPD, ARM::VLD4q8_UPD, true, true, EvenDblSpc, 4, 8 },
{ ARM::VLD4q8oddPseudo_UPD, ARM::VLD4q8_UPD, true, true, OddDblSpc, 4, 8 },
{ ARM::VST1LNq16Pseudo, ARM::VST1LNd16, false, false, EvenDblSpc, 1, 4 },
{ ARM::VST1LNq16Pseudo_UPD, ARM::VST1LNd16_UPD,false, true, EvenDblSpc, 1, 4 },
{ ARM::VST1LNq32Pseudo, ARM::VST1LNd32, false, false, EvenDblSpc, 1, 2 },
{ ARM::VST1LNq32Pseudo_UPD, ARM::VST1LNd32_UPD,false, true, EvenDblSpc, 1, 2 },
{ ARM::VST1LNq8Pseudo, ARM::VST1LNd8, false, false, EvenDblSpc, 1, 8 },
{ ARM::VST1LNq8Pseudo_UPD, ARM::VST1LNd8_UPD, false, true, EvenDblSpc, 1, 8 },
{ ARM::VST1d64QPseudo, ARM::VST1d64Q, false, false, SingleSpc, 4, 1 },
{ ARM::VST1d64QPseudo_UPD, ARM::VST1d64Q_UPD, false, true, SingleSpc, 4, 1 },
{ ARM::VST1d64TPseudo, ARM::VST1d64T, false, false, SingleSpc, 3, 1 },
{ ARM::VST1d64TPseudo_UPD, ARM::VST1d64T_UPD, false, true, SingleSpc, 3, 1 },
{ ARM::VST1q16Pseudo, ARM::VST1q16, false, false, SingleSpc, 2, 4 },
{ ARM::VST1q16Pseudo_UPD, ARM::VST1q16_UPD, false, true, SingleSpc, 2, 4 },
{ ARM::VST1q32Pseudo, ARM::VST1q32, false, false, SingleSpc, 2, 2 },
{ ARM::VST1q32Pseudo_UPD, ARM::VST1q32_UPD, false, true, SingleSpc, 2, 2 },
{ ARM::VST1q64Pseudo, ARM::VST1q64, false, false, SingleSpc, 2, 1 },
{ ARM::VST1q64Pseudo_UPD, ARM::VST1q64_UPD, false, true, SingleSpc, 2, 1 },
{ ARM::VST1q8Pseudo, ARM::VST1q8, false, false, SingleSpc, 2, 8 },
{ ARM::VST1q8Pseudo_UPD, ARM::VST1q8_UPD, false, true, SingleSpc, 2, 8 },
{ ARM::VST2LNd16Pseudo, ARM::VST2LNd16, false, false, SingleSpc, 2, 4 },
{ ARM::VST2LNd16Pseudo_UPD, ARM::VST2LNd16_UPD, false, true, SingleSpc, 2, 4 },
{ ARM::VST2LNd32Pseudo, ARM::VST2LNd32, false, false, SingleSpc, 2, 2 },
{ ARM::VST2LNd32Pseudo_UPD, ARM::VST2LNd32_UPD, false, true, SingleSpc, 2, 2 },
{ ARM::VST2LNd8Pseudo, ARM::VST2LNd8, false, false, SingleSpc, 2, 8 },
{ ARM::VST2LNd8Pseudo_UPD, ARM::VST2LNd8_UPD, false, true, SingleSpc, 2, 8 },
{ ARM::VST2LNq16Pseudo, ARM::VST2LNq16, false, false, EvenDblSpc, 2, 4},
{ ARM::VST2LNq16Pseudo_UPD, ARM::VST2LNq16_UPD, false, true, EvenDblSpc, 2, 4},
{ ARM::VST2LNq32Pseudo, ARM::VST2LNq32, false, false, EvenDblSpc, 2, 2},
{ ARM::VST2LNq32Pseudo_UPD, ARM::VST2LNq32_UPD, false, true, EvenDblSpc, 2, 2},
{ ARM::VST2d16Pseudo, ARM::VST2d16, false, false, SingleSpc, 2, 4 },
{ ARM::VST2d16Pseudo_UPD, ARM::VST2d16_UPD, false, true, SingleSpc, 2, 4 },
{ ARM::VST2d32Pseudo, ARM::VST2d32, false, false, SingleSpc, 2, 2 },
{ ARM::VST2d32Pseudo_UPD, ARM::VST2d32_UPD, false, true, SingleSpc, 2, 2 },
{ ARM::VST2d8Pseudo, ARM::VST2d8, false, false, SingleSpc, 2, 8 },
{ ARM::VST2d8Pseudo_UPD, ARM::VST2d8_UPD, false, true, SingleSpc, 2, 8 },
{ ARM::VST2q16Pseudo, ARM::VST2q16, false, false, SingleSpc, 4, 4 },
{ ARM::VST2q16Pseudo_UPD, ARM::VST2q16_UPD, false, true, SingleSpc, 4, 4 },
{ ARM::VST2q32Pseudo, ARM::VST2q32, false, false, SingleSpc, 4, 2 },
{ ARM::VST2q32Pseudo_UPD, ARM::VST2q32_UPD, false, true, SingleSpc, 4, 2 },
{ ARM::VST2q8Pseudo, ARM::VST2q8, false, false, SingleSpc, 4, 8 },
{ ARM::VST2q8Pseudo_UPD, ARM::VST2q8_UPD, false, true, SingleSpc, 4, 8 },
{ ARM::VST3LNd16Pseudo, ARM::VST3LNd16, false, false, SingleSpc, 3, 4 },
{ ARM::VST3LNd16Pseudo_UPD, ARM::VST3LNd16_UPD, false, true, SingleSpc, 3, 4 },
{ ARM::VST3LNd32Pseudo, ARM::VST3LNd32, false, false, SingleSpc, 3, 2 },
{ ARM::VST3LNd32Pseudo_UPD, ARM::VST3LNd32_UPD, false, true, SingleSpc, 3, 2 },
{ ARM::VST3LNd8Pseudo, ARM::VST3LNd8, false, false, SingleSpc, 3, 8 },
{ ARM::VST3LNd8Pseudo_UPD, ARM::VST3LNd8_UPD, false, true, SingleSpc, 3, 8 },
{ ARM::VST3LNq16Pseudo, ARM::VST3LNq16, false, false, EvenDblSpc, 3, 4},
{ ARM::VST3LNq16Pseudo_UPD, ARM::VST3LNq16_UPD, false, true, EvenDblSpc, 3, 4},
{ ARM::VST3LNq32Pseudo, ARM::VST3LNq32, false, false, EvenDblSpc, 3, 2},
{ ARM::VST3LNq32Pseudo_UPD, ARM::VST3LNq32_UPD, false, true, EvenDblSpc, 3, 2},
{ ARM::VST3d16Pseudo, ARM::VST3d16, false, false, SingleSpc, 3, 4 },
{ ARM::VST3d16Pseudo_UPD, ARM::VST3d16_UPD, false, true, SingleSpc, 3, 4 },
{ ARM::VST3d32Pseudo, ARM::VST3d32, false, false, SingleSpc, 3, 2 },
{ ARM::VST3d32Pseudo_UPD, ARM::VST3d32_UPD, false, true, SingleSpc, 3, 2 },
{ ARM::VST3d8Pseudo, ARM::VST3d8, false, false, SingleSpc, 3, 8 },
{ ARM::VST3d8Pseudo_UPD, ARM::VST3d8_UPD, false, true, SingleSpc, 3, 8 },
{ ARM::VST3q16Pseudo_UPD, ARM::VST3q16_UPD, false, true, EvenDblSpc, 3, 4 },
{ ARM::VST3q16oddPseudo_UPD, ARM::VST3q16_UPD, false, true, OddDblSpc, 3, 4 },
{ ARM::VST3q32Pseudo_UPD, ARM::VST3q32_UPD, false, true, EvenDblSpc, 3, 2 },
{ ARM::VST3q32oddPseudo_UPD, ARM::VST3q32_UPD, false, true, OddDblSpc, 3, 2 },
{ ARM::VST3q8Pseudo_UPD, ARM::VST3q8_UPD, false, true, EvenDblSpc, 3, 8 },
{ ARM::VST3q8oddPseudo_UPD, ARM::VST3q8_UPD, false, true, OddDblSpc, 3, 8 },
{ ARM::VST4LNd16Pseudo, ARM::VST4LNd16, false, false, SingleSpc, 4, 4 },
{ ARM::VST4LNd16Pseudo_UPD, ARM::VST4LNd16_UPD, false, true, SingleSpc, 4, 4 },
{ ARM::VST4LNd32Pseudo, ARM::VST4LNd32, false, false, SingleSpc, 4, 2 },
{ ARM::VST4LNd32Pseudo_UPD, ARM::VST4LNd32_UPD, false, true, SingleSpc, 4, 2 },
{ ARM::VST4LNd8Pseudo, ARM::VST4LNd8, false, false, SingleSpc, 4, 8 },
{ ARM::VST4LNd8Pseudo_UPD, ARM::VST4LNd8_UPD, false, true, SingleSpc, 4, 8 },
{ ARM::VST4LNq16Pseudo, ARM::VST4LNq16, false, false, EvenDblSpc, 4, 4},
{ ARM::VST4LNq16Pseudo_UPD, ARM::VST4LNq16_UPD, false, true, EvenDblSpc, 4, 4},
{ ARM::VST4LNq32Pseudo, ARM::VST4LNq32, false, false, EvenDblSpc, 4, 2},
{ ARM::VST4LNq32Pseudo_UPD, ARM::VST4LNq32_UPD, false, true, EvenDblSpc, 4, 2},
{ ARM::VST4d16Pseudo, ARM::VST4d16, false, false, SingleSpc, 4, 4 },
{ ARM::VST4d16Pseudo_UPD, ARM::VST4d16_UPD, false, true, SingleSpc, 4, 4 },
{ ARM::VST4d32Pseudo, ARM::VST4d32, false, false, SingleSpc, 4, 2 },
{ ARM::VST4d32Pseudo_UPD, ARM::VST4d32_UPD, false, true, SingleSpc, 4, 2 },
{ ARM::VST4d8Pseudo, ARM::VST4d8, false, false, SingleSpc, 4, 8 },
{ ARM::VST4d8Pseudo_UPD, ARM::VST4d8_UPD, false, true, SingleSpc, 4, 8 },
{ ARM::VST4q16Pseudo_UPD, ARM::VST4q16_UPD, false, true, EvenDblSpc, 4, 4 },
{ ARM::VST4q16oddPseudo_UPD, ARM::VST4q16_UPD, false, true, OddDblSpc, 4, 4 },
{ ARM::VST4q32Pseudo_UPD, ARM::VST4q32_UPD, false, true, EvenDblSpc, 4, 2 },
{ ARM::VST4q32oddPseudo_UPD, ARM::VST4q32_UPD, false, true, OddDblSpc, 4, 2 },
{ ARM::VST4q8Pseudo_UPD, ARM::VST4q8_UPD, false, true, EvenDblSpc, 4, 8 },
{ ARM::VST4q8oddPseudo_UPD , ARM::VST4q8_UPD, false, true, OddDblSpc, 4, 8 }
};
/// LookupNEONLdSt - Search the NEONLdStTable for information about a NEON
/// load or store pseudo instruction.
static const NEONLdStTableEntry *LookupNEONLdSt(unsigned Opcode) {
unsigned NumEntries = array_lengthof(NEONLdStTable);
#ifndef NDEBUG
// Make sure the table is sorted.
static bool TableChecked = false;
if (!TableChecked) {
for (unsigned i = 0; i != NumEntries-1; ++i)
assert(NEONLdStTable[i] < NEONLdStTable[i+1] &&
"NEONLdStTable is not sorted!");
TableChecked = true;
}
#endif
const NEONLdStTableEntry *I =
std::lower_bound(NEONLdStTable, NEONLdStTable + NumEntries, Opcode);
if (I != NEONLdStTable + NumEntries && I->PseudoOpc == Opcode)
return I;
return NULL;
}
/// GetDSubRegs - Get 4 D subregisters of a Q, QQ, or QQQQ register,
/// corresponding to the specified register spacing. Not all of the results
/// are necessarily valid, e.g., a Q register only has 2 D subregisters.
static void GetDSubRegs(unsigned Reg, NEONRegSpacing RegSpc,
const TargetRegisterInfo *TRI, unsigned &D0,
unsigned &D1, unsigned &D2, unsigned &D3) {
if (RegSpc == SingleSpc) {
D0 = TRI->getSubReg(Reg, ARM::dsub_0);
D1 = TRI->getSubReg(Reg, ARM::dsub_1);
D2 = TRI->getSubReg(Reg, ARM::dsub_2);
D3 = TRI->getSubReg(Reg, ARM::dsub_3);
} else if (RegSpc == EvenDblSpc) {
D0 = TRI->getSubReg(Reg, ARM::dsub_0);
D1 = TRI->getSubReg(Reg, ARM::dsub_2);
D2 = TRI->getSubReg(Reg, ARM::dsub_4);
D3 = TRI->getSubReg(Reg, ARM::dsub_6);
} else {
assert(RegSpc == OddDblSpc && "unknown register spacing");
D0 = TRI->getSubReg(Reg, ARM::dsub_1);
D1 = TRI->getSubReg(Reg, ARM::dsub_3);
D2 = TRI->getSubReg(Reg, ARM::dsub_5);
D3 = TRI->getSubReg(Reg, ARM::dsub_7);
}
}
/// ExpandVLD - Translate VLD pseudo instructions with Q, QQ or QQQQ register
/// operands to real VLD instructions with D register operands.
void ARMExpandPseudo::ExpandVLD(MachineBasicBlock::iterator &MBBI) {
MachineInstr &MI = *MBBI;
MachineBasicBlock &MBB = *MI.getParent();
const NEONLdStTableEntry *TableEntry = LookupNEONLdSt(MI.getOpcode());
assert(TableEntry && TableEntry->IsLoad && "NEONLdStTable lookup failed");
NEONRegSpacing RegSpc = TableEntry->RegSpacing;
unsigned NumRegs = TableEntry->NumRegs;
MachineInstrBuilder MIB = BuildMI(MBB, MBBI, MI.getDebugLoc(),
TII->get(TableEntry->RealOpc));
unsigned OpIdx = 0;
bool DstIsDead = MI.getOperand(OpIdx).isDead();
unsigned DstReg = MI.getOperand(OpIdx++).getReg();
unsigned D0, D1, D2, D3;
GetDSubRegs(DstReg, RegSpc, TRI, D0, D1, D2, D3);
MIB.addReg(D0, RegState::Define | getDeadRegState(DstIsDead))
.addReg(D1, RegState::Define | getDeadRegState(DstIsDead));
if (NumRegs > 2)
MIB.addReg(D2, RegState::Define | getDeadRegState(DstIsDead));
if (NumRegs > 3)
MIB.addReg(D3, RegState::Define | getDeadRegState(DstIsDead));
if (TableEntry->HasWriteBack)
MIB.addOperand(MI.getOperand(OpIdx++));
// Copy the addrmode6 operands.
MIB.addOperand(MI.getOperand(OpIdx++));
MIB.addOperand(MI.getOperand(OpIdx++));
// Copy the am6offset operand.
if (TableEntry->HasWriteBack)
MIB.addOperand(MI.getOperand(OpIdx++));
// For an instruction writing double-spaced subregs, the pseudo instruction
// has an extra operand that is a use of the super-register. Record the
// operand index and skip over it.
unsigned SrcOpIdx = 0;
if (RegSpc == EvenDblSpc || RegSpc == OddDblSpc)
SrcOpIdx = OpIdx++;
// Copy the predicate operands.
MIB.addOperand(MI.getOperand(OpIdx++));
MIB.addOperand(MI.getOperand(OpIdx++));
// Copy the super-register source operand used for double-spaced subregs over
// to the new instruction as an implicit operand.
if (SrcOpIdx != 0) {
MachineOperand MO = MI.getOperand(SrcOpIdx);
MO.setImplicit(true);
MIB.addOperand(MO);
}
// Add an implicit def for the super-register.
MIB.addReg(DstReg, RegState::ImplicitDefine | getDeadRegState(DstIsDead));
TransferImpOps(MI, MIB, MIB);
MI.eraseFromParent();
}
/// ExpandVST - Translate VST pseudo instructions with Q, QQ or QQQQ register
/// operands to real VST instructions with D register operands.
void ARMExpandPseudo::ExpandVST(MachineBasicBlock::iterator &MBBI) {
MachineInstr &MI = *MBBI;
MachineBasicBlock &MBB = *MI.getParent();
const NEONLdStTableEntry *TableEntry = LookupNEONLdSt(MI.getOpcode());
assert(TableEntry && !TableEntry->IsLoad && "NEONLdStTable lookup failed");
NEONRegSpacing RegSpc = TableEntry->RegSpacing;
unsigned NumRegs = TableEntry->NumRegs;
MachineInstrBuilder MIB = BuildMI(MBB, MBBI, MI.getDebugLoc(),
TII->get(TableEntry->RealOpc));
unsigned OpIdx = 0;
if (TableEntry->HasWriteBack)
MIB.addOperand(MI.getOperand(OpIdx++));
// Copy the addrmode6 operands.
MIB.addOperand(MI.getOperand(OpIdx++));
MIB.addOperand(MI.getOperand(OpIdx++));
// Copy the am6offset operand.
if (TableEntry->HasWriteBack)
MIB.addOperand(MI.getOperand(OpIdx++));
bool SrcIsKill = MI.getOperand(OpIdx).isKill();
unsigned SrcReg = MI.getOperand(OpIdx++).getReg();
unsigned D0, D1, D2, D3;
GetDSubRegs(SrcReg, RegSpc, TRI, D0, D1, D2, D3);
MIB.addReg(D0).addReg(D1);
if (NumRegs > 2)
MIB.addReg(D2);
if (NumRegs > 3)
MIB.addReg(D3);
// Copy the predicate operands.
MIB.addOperand(MI.getOperand(OpIdx++));
MIB.addOperand(MI.getOperand(OpIdx++));
if (SrcIsKill)
// Add an implicit kill for the super-reg.
(*MIB).addRegisterKilled(SrcReg, TRI, true);
TransferImpOps(MI, MIB, MIB);
MI.eraseFromParent();
}
/// ExpandLaneOp - Translate VLD*LN and VST*LN instructions with Q, QQ or QQQQ
/// register operands to real instructions with D register operands.
void ARMExpandPseudo::ExpandLaneOp(MachineBasicBlock::iterator &MBBI) {
MachineInstr &MI = *MBBI;
MachineBasicBlock &MBB = *MI.getParent();
const NEONLdStTableEntry *TableEntry = LookupNEONLdSt(MI.getOpcode());
assert(TableEntry && "NEONLdStTable lookup failed");
NEONRegSpacing RegSpc = TableEntry->RegSpacing;
unsigned NumRegs = TableEntry->NumRegs;
unsigned RegElts = TableEntry->RegElts;
MachineInstrBuilder MIB = BuildMI(MBB, MBBI, MI.getDebugLoc(),
TII->get(TableEntry->RealOpc));
unsigned OpIdx = 0;
// The lane operand is always the 3rd from last operand, before the 2
// predicate operands.
unsigned Lane = MI.getOperand(MI.getDesc().getNumOperands() - 3).getImm();
// Adjust the lane and spacing as needed for Q registers.
assert(RegSpc != OddDblSpc && "unexpected register spacing for VLD/VST-lane");
if (RegSpc == EvenDblSpc && Lane >= RegElts) {
RegSpc = OddDblSpc;
Lane -= RegElts;
}
assert(Lane < RegElts && "out of range lane for VLD/VST-lane");
unsigned D0, D1, D2, D3;
unsigned DstReg = 0;
bool DstIsDead = false;
if (TableEntry->IsLoad) {
DstIsDead = MI.getOperand(OpIdx).isDead();
DstReg = MI.getOperand(OpIdx++).getReg();
GetDSubRegs(DstReg, RegSpc, TRI, D0, D1, D2, D3);
MIB.addReg(D0, RegState::Define | getDeadRegState(DstIsDead));
if (NumRegs > 1)
MIB.addReg(D1, RegState::Define | getDeadRegState(DstIsDead));
if (NumRegs > 2)
MIB.addReg(D2, RegState::Define | getDeadRegState(DstIsDead));
if (NumRegs > 3)
MIB.addReg(D3, RegState::Define | getDeadRegState(DstIsDead));
}
if (TableEntry->HasWriteBack)
MIB.addOperand(MI.getOperand(OpIdx++));
// Copy the addrmode6 operands.
MIB.addOperand(MI.getOperand(OpIdx++));
MIB.addOperand(MI.getOperand(OpIdx++));
// Copy the am6offset operand.
if (TableEntry->HasWriteBack)
MIB.addOperand(MI.getOperand(OpIdx++));
// Grab the super-register source.
MachineOperand MO = MI.getOperand(OpIdx++);
if (!TableEntry->IsLoad)
GetDSubRegs(MO.getReg(), RegSpc, TRI, D0, D1, D2, D3);
// Add the subregs as sources of the new instruction.
unsigned SrcFlags = (getUndefRegState(MO.isUndef()) |
getKillRegState(MO.isKill()));
MIB.addReg(D0, SrcFlags);
if (NumRegs > 1)
MIB.addReg(D1, SrcFlags);
if (NumRegs > 2)
MIB.addReg(D2, SrcFlags);
if (NumRegs > 3)
MIB.addReg(D3, SrcFlags);
// Add the lane number operand.
MIB.addImm(Lane);
OpIdx += 1;
// Copy the predicate operands.
MIB.addOperand(MI.getOperand(OpIdx++));
MIB.addOperand(MI.getOperand(OpIdx++));
// Copy the super-register source to be an implicit source.
MO.setImplicit(true);
MIB.addOperand(MO);
if (TableEntry->IsLoad)
// Add an implicit def for the super-register.
MIB.addReg(DstReg, RegState::ImplicitDefine | getDeadRegState(DstIsDead));
TransferImpOps(MI, MIB, MIB);
MI.eraseFromParent();
}
/// ExpandVTBL - Translate VTBL and VTBX pseudo instructions with Q or QQ
/// register operands to real instructions with D register operands.
void ARMExpandPseudo::ExpandVTBL(MachineBasicBlock::iterator &MBBI,
unsigned Opc, bool IsExt, unsigned NumRegs) {
MachineInstr &MI = *MBBI;
MachineBasicBlock &MBB = *MI.getParent();
MachineInstrBuilder MIB = BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(Opc));
unsigned OpIdx = 0;
// Transfer the destination register operand.
MIB.addOperand(MI.getOperand(OpIdx++));
if (IsExt)
MIB.addOperand(MI.getOperand(OpIdx++));
bool SrcIsKill = MI.getOperand(OpIdx).isKill();
unsigned SrcReg = MI.getOperand(OpIdx++).getReg();
unsigned D0, D1, D2, D3;
GetDSubRegs(SrcReg, SingleSpc, TRI, D0, D1, D2, D3);
MIB.addReg(D0).addReg(D1);
if (NumRegs > 2)
MIB.addReg(D2);
if (NumRegs > 3)
MIB.addReg(D3);
// Copy the other source register operand.
MIB.addOperand(MI.getOperand(OpIdx++));
// Copy the predicate operands.
MIB.addOperand(MI.getOperand(OpIdx++));
MIB.addOperand(MI.getOperand(OpIdx++));
if (SrcIsKill)
// Add an implicit kill for the super-reg.
(*MIB).addRegisterKilled(SrcReg, TRI, true);
TransferImpOps(MI, MIB, MIB);
MI.eraseFromParent();
}
bool ARMExpandPseudo::ExpandMBB(MachineBasicBlock &MBB) {
bool Modified = false;
MachineBasicBlock::iterator MBBI = MBB.begin(), E = MBB.end();
while (MBBI != E) {
MachineInstr &MI = *MBBI;
MachineBasicBlock::iterator NMBBI = llvm::next(MBBI);
bool ModifiedOp = true;
unsigned Opcode = MI.getOpcode();
switch (Opcode) {
default:
ModifiedOp = false;
break;
case ARM::Int_eh_sjlj_dispatchsetup: {
MachineFunction &MF = *MI.getParent()->getParent();
const ARMBaseInstrInfo *AII =
static_cast<const ARMBaseInstrInfo*>(TII);
const ARMBaseRegisterInfo &RI = AII->getRegisterInfo();
// For functions using a base pointer, we rematerialize it (via the frame
// pointer) here since eh.sjlj.setjmp and eh.sjlj.longjmp don't do it
// for us. Otherwise, expand to nothing.
if (RI.hasBasePointer(MF)) {
ARMFunctionInfo *AFI = MF.getInfo<ARMFunctionInfo>();
int32_t NumBytes = AFI->getFramePtrSpillOffset();
unsigned FramePtr = RI.getFrameRegister(MF);
assert(MF.getTarget().getFrameInfo()->hasFP(MF) &&
"base pointer without frame pointer?");
if (AFI->isThumb2Function()) {
llvm::emitT2RegPlusImmediate(MBB, MBBI, MI.getDebugLoc(), ARM::R6,
FramePtr, -NumBytes, ARMCC::AL, 0, *TII);
} else if (AFI->isThumbFunction()) {
llvm::emitThumbRegPlusImmediate(MBB, MBBI, ARM::R6,
FramePtr, -NumBytes,
*TII, RI, MI.getDebugLoc());
} else {
llvm::emitARMRegPlusImmediate(MBB, MBBI, MI.getDebugLoc(), ARM::R6,
FramePtr, -NumBytes, ARMCC::AL, 0,
*TII);
}
// If there's dynamic realignment, adjust for it.
if (RI.needsStackRealignment(MF)) {
MachineFrameInfo *MFI = MF.getFrameInfo();
unsigned MaxAlign = MFI->getMaxAlignment();
assert (!AFI->isThumb1OnlyFunction());
// Emit bic r6, r6, MaxAlign
unsigned bicOpc = AFI->isThumbFunction() ?
ARM::t2BICri : ARM::BICri;
AddDefaultCC(AddDefaultPred(BuildMI(MBB, MBBI, MI.getDebugLoc(),
TII->get(bicOpc), ARM::R6)
.addReg(ARM::R6, RegState::Kill)
.addImm(MaxAlign-1)));
}
}
MI.eraseFromParent();
break;
}
case ARM::MOVsrl_flag:
case ARM::MOVsra_flag: {
// These are just fancy MOVs insructions.
AddDefaultPred(BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(ARM::MOVs),
MI.getOperand(0).getReg())
.addOperand(MI.getOperand(1))
.addReg(0)
.addImm(ARM_AM::getSORegOpc((Opcode == ARM::MOVsrl_flag ? ARM_AM::lsr
: ARM_AM::asr), 1)))
.addReg(ARM::CPSR, RegState::Define);
MI.eraseFromParent();
break;
}
case ARM::RRX: {
// This encodes as "MOVs Rd, Rm, rrx
MachineInstrBuilder MIB =
AddDefaultPred(BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(ARM::MOVs),
MI.getOperand(0).getReg())
.addOperand(MI.getOperand(1))
.addOperand(MI.getOperand(1))
.addImm(ARM_AM::getSORegOpc(ARM_AM::rrx, 0)))
.addReg(0);
TransferImpOps(MI, MIB, MIB);
MI.eraseFromParent();
break;
}
case ARM::TPsoft: {
unsigned PredReg = 0;
ARMCC::CondCodes Pred = llvm::getInstrPredicate(&MI, PredReg);
MachineInstrBuilder MIB =
BuildMI(MBB, MBBI, MI.getDebugLoc(),
TII->get(ARM::BL))
.addExternalSymbol("__aeabi_read_tp", 0);
(*MIB).setMemRefs(MI.memoperands_begin(), MI.memoperands_end());
TransferImpOps(MI, MIB, MIB);
MI.eraseFromParent();
break;
};
case ARM::t2LDRHpci:
case ARM::t2LDRBpci:
case ARM::t2LDRSHpci:
case ARM::t2LDRSBpci:
case ARM::t2LDRpci: {
unsigned NewLdOpc;
if (Opcode == ARM::t2LDRpci)
NewLdOpc = ARM::t2LDRi12;
else if (Opcode == ARM::t2LDRHpci)
NewLdOpc = ARM::t2LDRHi12;
else if (Opcode == ARM::t2LDRBpci)
NewLdOpc = ARM::t2LDRBi12;
else if (Opcode == ARM::t2LDRSHpci)
NewLdOpc = ARM::t2LDRSHi12;
else if (Opcode == ARM::t2LDRSBpci)
NewLdOpc = ARM::t2LDRSBi12;
else
llvm_unreachable("Not a known opcode?");
unsigned DstReg = MI.getOperand(0).getReg();
MachineInstrBuilder MIB =
AddDefaultPred(BuildMI(MBB, MBBI, MI.getDebugLoc(),
TII->get(NewLdOpc), DstReg)
.addReg(ARM::PC)
.addOperand(MI.getOperand(1)));
(*MIB).setMemRefs(MI.memoperands_begin(), MI.memoperands_end());
TransferImpOps(MI, MIB, MIB);
MI.eraseFromParent();
break;
}
case ARM::tLDRpci_pic:
case ARM::t2LDRpci_pic: {
unsigned NewLdOpc = (Opcode == ARM::tLDRpci_pic)
? ARM::tLDRpci : ARM::t2LDRi12;
unsigned DstReg = MI.getOperand(0).getReg();
bool DstIsDead = MI.getOperand(0).isDead();
MachineInstrBuilder MIB1 =
BuildMI(MBB, MBBI, MI.getDebugLoc(),
TII->get(NewLdOpc), DstReg);
if (Opcode == ARM::t2LDRpci_pic) MIB1.addReg(ARM::PC);
MIB1.addOperand(MI.getOperand(1));
AddDefaultPred(MIB1);
(*MIB1).setMemRefs(MI.memoperands_begin(), MI.memoperands_end());
MachineInstrBuilder MIB2 = BuildMI(MBB, MBBI, MI.getDebugLoc(),
TII->get(ARM::tPICADD))
.addReg(DstReg, RegState::Define | getDeadRegState(DstIsDead))
.addReg(DstReg)
.addOperand(MI.getOperand(2));
TransferImpOps(MI, MIB1, MIB2);
MI.eraseFromParent();
break;
}
case ARM::MOVi32imm:
case ARM::MOVCCi32imm:
case ARM::t2MOVi32imm:
case ARM::t2MOVCCi32imm: {
unsigned PredReg = 0;
ARMCC::CondCodes Pred = llvm::getInstrPredicate(&MI, PredReg);
unsigned DstReg = MI.getOperand(0).getReg();
bool DstIsDead = MI.getOperand(0).isDead();
bool isCC = Opcode == ARM::MOVCCi32imm || Opcode == ARM::t2MOVCCi32imm;
const MachineOperand &MO = MI.getOperand(isCC ? 2 : 1);
MachineInstrBuilder LO16, HI16;
if (!STI->hasV6T2Ops() &&
(Opcode == ARM::MOVi32imm || Opcode == ARM::MOVCCi32imm)) {
// Expand into a movi + orr.
LO16 = BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(ARM::MOVi), DstReg);
HI16 = BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(ARM::ORRri))
.addReg(DstReg, RegState::Define | getDeadRegState(DstIsDead))
.addReg(DstReg);
assert (MO.isImm() && "MOVi32imm w/ non-immediate source operand!");
unsigned ImmVal = (unsigned)MO.getImm();
unsigned SOImmValV1 = ARM_AM::getSOImmTwoPartFirst(ImmVal);
unsigned SOImmValV2 = ARM_AM::getSOImmTwoPartSecond(ImmVal);
LO16 = LO16.addImm(SOImmValV1);
HI16 = HI16.addImm(SOImmValV2);
(*LO16).setMemRefs(MI.memoperands_begin(), MI.memoperands_end());
(*HI16).setMemRefs(MI.memoperands_begin(), MI.memoperands_end());
LO16.addImm(Pred).addReg(PredReg).addReg(0);
HI16.addImm(Pred).addReg(PredReg).addReg(0);
TransferImpOps(MI, LO16, HI16);
MI.eraseFromParent();
break;
}
bool isThumb =
(Opcode == ARM::t2MOVi32imm || Opcode == ARM::t2MOVCCi32imm);
LO16 = BuildMI(MBB, MBBI, MI.getDebugLoc(),
TII->get(isThumb ? ARM::t2MOVi16 : ARM::MOVi16),
DstReg);
HI16 = BuildMI(MBB, MBBI, MI.getDebugLoc(),
TII->get(isThumb ? ARM::t2MOVTi16 : ARM::MOVTi16))
.addReg(DstReg, RegState::Define | getDeadRegState(DstIsDead))
.addReg(DstReg);
if (MO.isImm()) {
unsigned Imm = MO.getImm();
unsigned Lo16 = Imm & 0xffff;
unsigned Hi16 = (Imm >> 16) & 0xffff;
LO16 = LO16.addImm(Lo16);
HI16 = HI16.addImm(Hi16);
} else {
const GlobalValue *GV = MO.getGlobal();
unsigned TF = MO.getTargetFlags();
LO16 = LO16.addGlobalAddress(GV, MO.getOffset(), TF | ARMII::MO_LO16);
HI16 = HI16.addGlobalAddress(GV, MO.getOffset(), TF | ARMII::MO_HI16);
}
(*LO16).setMemRefs(MI.memoperands_begin(), MI.memoperands_end());
(*HI16).setMemRefs(MI.memoperands_begin(), MI.memoperands_end());
LO16.addImm(Pred).addReg(PredReg);
HI16.addImm(Pred).addReg(PredReg);
TransferImpOps(MI, LO16, HI16);
MI.eraseFromParent();
break;
}
case ARM::VMOVQQ: {
unsigned DstReg = MI.getOperand(0).getReg();
bool DstIsDead = MI.getOperand(0).isDead();
unsigned EvenDst = TRI->getSubReg(DstReg, ARM::qsub_0);
unsigned OddDst = TRI->getSubReg(DstReg, ARM::qsub_1);
unsigned SrcReg = MI.getOperand(1).getReg();
bool SrcIsKill = MI.getOperand(1).isKill();
unsigned EvenSrc = TRI->getSubReg(SrcReg, ARM::qsub_0);
unsigned OddSrc = TRI->getSubReg(SrcReg, ARM::qsub_1);
MachineInstrBuilder Even =
AddDefaultPred(BuildMI(MBB, MBBI, MI.getDebugLoc(),
TII->get(ARM::VMOVQ))
.addReg(EvenDst,
RegState::Define | getDeadRegState(DstIsDead))
.addReg(EvenSrc, getKillRegState(SrcIsKill)));
MachineInstrBuilder Odd =
AddDefaultPred(BuildMI(MBB, MBBI, MI.getDebugLoc(),
TII->get(ARM::VMOVQ))
.addReg(OddDst,
RegState::Define | getDeadRegState(DstIsDead))
.addReg(OddSrc, getKillRegState(SrcIsKill)));
TransferImpOps(MI, Even, Odd);
MI.eraseFromParent();
break;
}
case ARM::VLDMQIA:
case ARM::VLDMQDB: {
unsigned NewOpc = (Opcode == ARM::VLDMQIA) ? ARM::VLDMDIA : ARM::VLDMDDB;
MachineInstrBuilder MIB =
BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(NewOpc));
unsigned OpIdx = 0;
// Grab the Q register destination.
bool DstIsDead = MI.getOperand(OpIdx).isDead();
unsigned DstReg = MI.getOperand(OpIdx++).getReg();
// Copy the source register.
MIB.addOperand(MI.getOperand(OpIdx++));
// Copy the predicate operands.
MIB.addOperand(MI.getOperand(OpIdx++));
MIB.addOperand(MI.getOperand(OpIdx++));
// Add the destination operands (D subregs).
unsigned D0 = TRI->getSubReg(DstReg, ARM::dsub_0);
unsigned D1 = TRI->getSubReg(DstReg, ARM::dsub_1);
MIB.addReg(D0, RegState::Define | getDeadRegState(DstIsDead))
.addReg(D1, RegState::Define | getDeadRegState(DstIsDead));
// Add an implicit def for the super-register.
MIB.addReg(DstReg, RegState::ImplicitDefine | getDeadRegState(DstIsDead));
TransferImpOps(MI, MIB, MIB);
MI.eraseFromParent();
break;
}
case ARM::VSTMQIA:
case ARM::VSTMQDB: {
unsigned NewOpc = (Opcode == ARM::VSTMQIA) ? ARM::VSTMDIA : ARM::VSTMDDB;
MachineInstrBuilder MIB =
BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(NewOpc));
unsigned OpIdx = 0;
// Grab the Q register source.
bool SrcIsKill = MI.getOperand(OpIdx).isKill();
unsigned SrcReg = MI.getOperand(OpIdx++).getReg();
// Copy the destination register.
MIB.addOperand(MI.getOperand(OpIdx++));
// Copy the predicate operands.
MIB.addOperand(MI.getOperand(OpIdx++));
MIB.addOperand(MI.getOperand(OpIdx++));
// Add the source operands (D subregs).
unsigned D0 = TRI->getSubReg(SrcReg, ARM::dsub_0);
unsigned D1 = TRI->getSubReg(SrcReg, ARM::dsub_1);
MIB.addReg(D0).addReg(D1);
if (SrcIsKill)
// Add an implicit kill for the Q register.
(*MIB).addRegisterKilled(SrcReg, TRI, true);
TransferImpOps(MI, MIB, MIB);
MI.eraseFromParent();
break;
}
case ARM::VDUPfqf:
case ARM::VDUPfdf:{
unsigned NewOpc = Opcode == ARM::VDUPfqf ? ARM::VDUPLNfq : ARM::VDUPLNfd;
MachineInstrBuilder MIB =
BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(NewOpc));
unsigned OpIdx = 0;
unsigned SrcReg = MI.getOperand(1).getReg();
unsigned Lane = getARMRegisterNumbering(SrcReg) & 1;
unsigned DReg = TRI->getMatchingSuperReg(SrcReg,
Lane & 1 ? ARM::ssub_1 : ARM::ssub_0, &ARM::DPR_VFP2RegClass);
// The lane is [0,1] for the containing DReg superregister.
// Copy the dst/src register operands.
MIB.addOperand(MI.getOperand(OpIdx++));
MIB.addReg(DReg);
++OpIdx;
// Add the lane select operand.
MIB.addImm(Lane);
// Add the predicate operands.
MIB.addOperand(MI.getOperand(OpIdx++));
MIB.addOperand(MI.getOperand(OpIdx++));
TransferImpOps(MI, MIB, MIB);
MI.eraseFromParent();
break;
}
case ARM::VLD1q8Pseudo:
case ARM::VLD1q16Pseudo:
case ARM::VLD1q32Pseudo:
case ARM::VLD1q64Pseudo:
case ARM::VLD1q8Pseudo_UPD:
case ARM::VLD1q16Pseudo_UPD:
case ARM::VLD1q32Pseudo_UPD:
case ARM::VLD1q64Pseudo_UPD:
case ARM::VLD2d8Pseudo:
case ARM::VLD2d16Pseudo:
case ARM::VLD2d32Pseudo:
case ARM::VLD2q8Pseudo:
case ARM::VLD2q16Pseudo:
case ARM::VLD2q32Pseudo:
case ARM::VLD2d8Pseudo_UPD:
case ARM::VLD2d16Pseudo_UPD:
case ARM::VLD2d32Pseudo_UPD:
case ARM::VLD2q8Pseudo_UPD:
case ARM::VLD2q16Pseudo_UPD:
case ARM::VLD2q32Pseudo_UPD:
case ARM::VLD3d8Pseudo:
case ARM::VLD3d16Pseudo:
case ARM::VLD3d32Pseudo:
case ARM::VLD1d64TPseudo:
case ARM::VLD3d8Pseudo_UPD:
case ARM::VLD3d16Pseudo_UPD:
case ARM::VLD3d32Pseudo_UPD:
case ARM::VLD1d64TPseudo_UPD:
case ARM::VLD3q8Pseudo_UPD:
case ARM::VLD3q16Pseudo_UPD:
case ARM::VLD3q32Pseudo_UPD:
case ARM::VLD3q8oddPseudo_UPD:
case ARM::VLD3q16oddPseudo_UPD:
case ARM::VLD3q32oddPseudo_UPD:
case ARM::VLD4d8Pseudo:
case ARM::VLD4d16Pseudo:
case ARM::VLD4d32Pseudo:
case ARM::VLD1d64QPseudo:
case ARM::VLD4d8Pseudo_UPD:
case ARM::VLD4d16Pseudo_UPD:
case ARM::VLD4d32Pseudo_UPD:
case ARM::VLD1d64QPseudo_UPD:
case ARM::VLD4q8Pseudo_UPD:
case ARM::VLD4q16Pseudo_UPD:
case ARM::VLD4q32Pseudo_UPD:
case ARM::VLD4q8oddPseudo_UPD:
case ARM::VLD4q16oddPseudo_UPD:
case ARM::VLD4q32oddPseudo_UPD:
case ARM::VLD1DUPq8Pseudo:
case ARM::VLD1DUPq16Pseudo:
case ARM::VLD1DUPq32Pseudo:
case ARM::VLD1DUPq8Pseudo_UPD:
case ARM::VLD1DUPq16Pseudo_UPD:
case ARM::VLD1DUPq32Pseudo_UPD:
case ARM::VLD2DUPd8Pseudo:
case ARM::VLD2DUPd16Pseudo:
case ARM::VLD2DUPd32Pseudo:
case ARM::VLD2DUPd8Pseudo_UPD:
case ARM::VLD2DUPd16Pseudo_UPD:
case ARM::VLD2DUPd32Pseudo_UPD:
case ARM::VLD3DUPd8Pseudo:
case ARM::VLD3DUPd16Pseudo:
case ARM::VLD3DUPd32Pseudo:
case ARM::VLD3DUPd8Pseudo_UPD:
case ARM::VLD3DUPd16Pseudo_UPD:
case ARM::VLD3DUPd32Pseudo_UPD:
case ARM::VLD4DUPd8Pseudo:
case ARM::VLD4DUPd16Pseudo:
case ARM::VLD4DUPd32Pseudo:
case ARM::VLD4DUPd8Pseudo_UPD:
case ARM::VLD4DUPd16Pseudo_UPD:
case ARM::VLD4DUPd32Pseudo_UPD:
ExpandVLD(MBBI);
break;
case ARM::VST1q8Pseudo:
case ARM::VST1q16Pseudo:
case ARM::VST1q32Pseudo:
case ARM::VST1q64Pseudo:
case ARM::VST1q8Pseudo_UPD:
case ARM::VST1q16Pseudo_UPD:
case ARM::VST1q32Pseudo_UPD:
case ARM::VST1q64Pseudo_UPD:
case ARM::VST2d8Pseudo:
case ARM::VST2d16Pseudo:
case ARM::VST2d32Pseudo:
case ARM::VST2q8Pseudo:
case ARM::VST2q16Pseudo:
case ARM::VST2q32Pseudo:
case ARM::VST2d8Pseudo_UPD:
case ARM::VST2d16Pseudo_UPD:
case ARM::VST2d32Pseudo_UPD:
case ARM::VST2q8Pseudo_UPD:
case ARM::VST2q16Pseudo_UPD:
case ARM::VST2q32Pseudo_UPD:
case ARM::VST3d8Pseudo:
case ARM::VST3d16Pseudo:
case ARM::VST3d32Pseudo:
case ARM::VST1d64TPseudo:
case ARM::VST3d8Pseudo_UPD:
case ARM::VST3d16Pseudo_UPD:
case ARM::VST3d32Pseudo_UPD:
case ARM::VST1d64TPseudo_UPD:
case ARM::VST3q8Pseudo_UPD:
case ARM::VST3q16Pseudo_UPD:
case ARM::VST3q32Pseudo_UPD:
case ARM::VST3q8oddPseudo_UPD:
case ARM::VST3q16oddPseudo_UPD:
case ARM::VST3q32oddPseudo_UPD:
case ARM::VST4d8Pseudo:
case ARM::VST4d16Pseudo:
case ARM::VST4d32Pseudo:
case ARM::VST1d64QPseudo:
case ARM::VST4d8Pseudo_UPD:
case ARM::VST4d16Pseudo_UPD:
case ARM::VST4d32Pseudo_UPD:
case ARM::VST1d64QPseudo_UPD:
case ARM::VST4q8Pseudo_UPD:
case ARM::VST4q16Pseudo_UPD:
case ARM::VST4q32Pseudo_UPD:
case ARM::VST4q8oddPseudo_UPD:
case ARM::VST4q16oddPseudo_UPD:
case ARM::VST4q32oddPseudo_UPD:
ExpandVST(MBBI);
break;
case ARM::VLD1LNq8Pseudo:
case ARM::VLD1LNq16Pseudo:
case ARM::VLD1LNq32Pseudo:
case ARM::VLD1LNq8Pseudo_UPD:
case ARM::VLD1LNq16Pseudo_UPD:
case ARM::VLD1LNq32Pseudo_UPD:
case ARM::VLD2LNd8Pseudo:
case ARM::VLD2LNd16Pseudo:
case ARM::VLD2LNd32Pseudo:
case ARM::VLD2LNq16Pseudo:
case ARM::VLD2LNq32Pseudo:
case ARM::VLD2LNd8Pseudo_UPD:
case ARM::VLD2LNd16Pseudo_UPD:
case ARM::VLD2LNd32Pseudo_UPD:
case ARM::VLD2LNq16Pseudo_UPD:
case ARM::VLD2LNq32Pseudo_UPD:
case ARM::VLD3LNd8Pseudo:
case ARM::VLD3LNd16Pseudo:
case ARM::VLD3LNd32Pseudo:
case ARM::VLD3LNq16Pseudo:
case ARM::VLD3LNq32Pseudo:
case ARM::VLD3LNd8Pseudo_UPD:
case ARM::VLD3LNd16Pseudo_UPD:
case ARM::VLD3LNd32Pseudo_UPD:
case ARM::VLD3LNq16Pseudo_UPD:
case ARM::VLD3LNq32Pseudo_UPD:
case ARM::VLD4LNd8Pseudo:
case ARM::VLD4LNd16Pseudo:
case ARM::VLD4LNd32Pseudo:
case ARM::VLD4LNq16Pseudo:
case ARM::VLD4LNq32Pseudo:
case ARM::VLD4LNd8Pseudo_UPD:
case ARM::VLD4LNd16Pseudo_UPD:
case ARM::VLD4LNd32Pseudo_UPD:
case ARM::VLD4LNq16Pseudo_UPD:
case ARM::VLD4LNq32Pseudo_UPD:
case ARM::VST1LNq8Pseudo:
case ARM::VST1LNq16Pseudo:
case ARM::VST1LNq32Pseudo:
case ARM::VST1LNq8Pseudo_UPD:
case ARM::VST1LNq16Pseudo_UPD:
case ARM::VST1LNq32Pseudo_UPD:
case ARM::VST2LNd8Pseudo:
case ARM::VST2LNd16Pseudo:
case ARM::VST2LNd32Pseudo:
case ARM::VST2LNq16Pseudo:
case ARM::VST2LNq32Pseudo:
case ARM::VST2LNd8Pseudo_UPD:
case ARM::VST2LNd16Pseudo_UPD:
case ARM::VST2LNd32Pseudo_UPD:
case ARM::VST2LNq16Pseudo_UPD:
case ARM::VST2LNq32Pseudo_UPD:
case ARM::VST3LNd8Pseudo:
case ARM::VST3LNd16Pseudo:
case ARM::VST3LNd32Pseudo:
case ARM::VST3LNq16Pseudo:
case ARM::VST3LNq32Pseudo:
case ARM::VST3LNd8Pseudo_UPD:
case ARM::VST3LNd16Pseudo_UPD:
case ARM::VST3LNd32Pseudo_UPD:
case ARM::VST3LNq16Pseudo_UPD:
case ARM::VST3LNq32Pseudo_UPD:
case ARM::VST4LNd8Pseudo:
case ARM::VST4LNd16Pseudo:
case ARM::VST4LNd32Pseudo:
case ARM::VST4LNq16Pseudo:
case ARM::VST4LNq32Pseudo:
case ARM::VST4LNd8Pseudo_UPD:
case ARM::VST4LNd16Pseudo_UPD:
case ARM::VST4LNd32Pseudo_UPD:
case ARM::VST4LNq16Pseudo_UPD:
case ARM::VST4LNq32Pseudo_UPD:
ExpandLaneOp(MBBI);
break;
case ARM::VTBL2Pseudo:
ExpandVTBL(MBBI, ARM::VTBL2, false, 2); break;
case ARM::VTBL3Pseudo:
ExpandVTBL(MBBI, ARM::VTBL3, false, 3); break;
case ARM::VTBL4Pseudo:
ExpandVTBL(MBBI, ARM::VTBL4, false, 4); break;
case ARM::VTBX2Pseudo:
ExpandVTBL(MBBI, ARM::VTBX2, true, 2); break;
case ARM::VTBX3Pseudo:
ExpandVTBL(MBBI, ARM::VTBX3, true, 3); break;
case ARM::VTBX4Pseudo:
ExpandVTBL(MBBI, ARM::VTBX4, true, 4); break;
}
if (ModifiedOp)
Modified = true;
MBBI = NMBBI;
}
return Modified;
}
bool ARMExpandPseudo::runOnMachineFunction(MachineFunction &MF) {
TII = static_cast<const ARMBaseInstrInfo*>(MF.getTarget().getInstrInfo());
TRI = MF.getTarget().getRegisterInfo();
STI = &MF.getTarget().getSubtarget<ARMSubtarget>();
bool Modified = false;
for (MachineFunction::iterator MFI = MF.begin(), E = MF.end(); MFI != E;
++MFI)
Modified |= ExpandMBB(*MFI);
return Modified;
}
/// createARMExpandPseudoPass - returns an instance of the pseudo instruction
/// expansion pass.
FunctionPass *llvm::createARMExpandPseudoPass() {
return new ARMExpandPseudo();
}
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