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llvm-6502/lib/Target/ARM/ARMExpandPseudoInsts.cpp
Eric Christopher 6035518e3b Have MachineFunction cache a pointer to the subtarget to make lookups 
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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@214838 91177308-0d34-0410-b5e6-96231b3b80d8
2014-08-05 02:39:49 +00:00

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//===-- ARMExpandPseudoInsts.cpp - Expand pseudo instructions -------------===//
//
// 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.
//
//===----------------------------------------------------------------------===//
#include "ARM.h"
#include "ARMBaseInstrInfo.h"
#include "ARMBaseRegisterInfo.h"
#include "ARMConstantPoolValue.h"
#include "ARMMachineFunctionInfo.h"
#include "MCTargetDesc/ARMAddressingModes.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineInstrBundle.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/IR/GlobalValue.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/raw_ostream.h" // FIXME: for debug only. remove!
#include "llvm/Target/TargetFrameLowering.h"
#include "llvm/Target/TargetRegisterInfo.h"
using namespace llvm;
#define DEBUG_TYPE "arm-pseudo"
static cl::opt<bool>
VerifyARMPseudo("verify-arm-pseudo-expand", cl::Hidden,
cl::desc("Verify machine code after expanding ARM pseudos"));
namespace {
class ARMExpandPseudo : public MachineFunctionPass {
public:
static char ID;
ARMExpandPseudo() : MachineFunctionPass(ID) {}
const ARMBaseInstrInfo *TII;
const TargetRegisterInfo *TRI;
const ARMSubtarget *STI;
ARMFunctionInfo *AFI;
bool runOnMachineFunction(MachineFunction &Fn) override;
const char *getPassName() const override {
return "ARM pseudo instruction expansion pass";
}
private:
void TransferImpOps(MachineInstr &OldMI,
MachineInstrBuilder &UseMI, MachineInstrBuilder &DefMI);
bool ExpandMI(MachineBasicBlock &MBB,
MachineBasicBlock::iterator MBBI);
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);
void ExpandMOV32BitImm(MachineBasicBlock &MBB,
MachineBasicBlock::iterator &MBBI);
};
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 MCInstrDesc &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 {
uint16_t PseudoOpc;
uint16_t RealOpc;
bool IsLoad;
bool isUpdating;
bool hasWritebackOperand;
uint8_t RegSpacing; // One of type NEONRegSpacing
uint8_t NumRegs; // D registers loaded or stored
uint8_t RegElts; // elements per D register; used for lane ops
// FIXME: Temporary flag to denote whether the real instruction takes
// a single register (like the encoding) or all of the registers in
// the list (like the asm syntax and the isel DAG). When all definitions
// are converted to take only the single encoded register, this will
// go away.
bool copyAllListRegs;
// 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::VLD1LNq16Pseudo, ARM::VLD1LNd16, true, false, false, EvenDblSpc, 1, 4 ,true},
{ ARM::VLD1LNq16Pseudo_UPD, ARM::VLD1LNd16_UPD, true, true, true, EvenDblSpc, 1, 4 ,true},
{ ARM::VLD1LNq32Pseudo, ARM::VLD1LNd32, true, false, false, EvenDblSpc, 1, 2 ,true},
{ ARM::VLD1LNq32Pseudo_UPD, ARM::VLD1LNd32_UPD, true, true, true, EvenDblSpc, 1, 2 ,true},
{ ARM::VLD1LNq8Pseudo, ARM::VLD1LNd8, true, false, false, EvenDblSpc, 1, 8 ,true},
{ ARM::VLD1LNq8Pseudo_UPD, ARM::VLD1LNd8_UPD, true, true, true, EvenDblSpc, 1, 8 ,true},
{ ARM::VLD1d64QPseudo, ARM::VLD1d64Q, true, false, false, SingleSpc, 4, 1 ,false},
{ ARM::VLD1d64QPseudoWB_fixed, ARM::VLD1d64Qwb_fixed, true, true, false, SingleSpc, 4, 1 ,false},
{ ARM::VLD1d64TPseudo, ARM::VLD1d64T, true, false, false, SingleSpc, 3, 1 ,false},
{ ARM::VLD1d64TPseudoWB_fixed, ARM::VLD1d64Twb_fixed, true, true, false, SingleSpc, 3, 1 ,false},
{ ARM::VLD2LNd16Pseudo, ARM::VLD2LNd16, true, false, false, SingleSpc, 2, 4 ,true},
{ ARM::VLD2LNd16Pseudo_UPD, ARM::VLD2LNd16_UPD, true, true, true, SingleSpc, 2, 4 ,true},
{ ARM::VLD2LNd32Pseudo, ARM::VLD2LNd32, true, false, false, SingleSpc, 2, 2 ,true},
{ ARM::VLD2LNd32Pseudo_UPD, ARM::VLD2LNd32_UPD, true, true, true, SingleSpc, 2, 2 ,true},
{ ARM::VLD2LNd8Pseudo, ARM::VLD2LNd8, true, false, false, SingleSpc, 2, 8 ,true},
{ ARM::VLD2LNd8Pseudo_UPD, ARM::VLD2LNd8_UPD, true, true, true, SingleSpc, 2, 8 ,true},
{ ARM::VLD2LNq16Pseudo, ARM::VLD2LNq16, true, false, false, EvenDblSpc, 2, 4 ,true},
{ ARM::VLD2LNq16Pseudo_UPD, ARM::VLD2LNq16_UPD, true, true, true, EvenDblSpc, 2, 4 ,true},
{ ARM::VLD2LNq32Pseudo, ARM::VLD2LNq32, true, false, false, EvenDblSpc, 2, 2 ,true},
{ ARM::VLD2LNq32Pseudo_UPD, ARM::VLD2LNq32_UPD, true, true, true, EvenDblSpc, 2, 2 ,true},
{ ARM::VLD2q16Pseudo, ARM::VLD2q16, true, false, false, SingleSpc, 4, 4 ,false},
{ ARM::VLD2q16PseudoWB_fixed, ARM::VLD2q16wb_fixed, true, true, false, SingleSpc, 4, 4 ,false},
{ ARM::VLD2q16PseudoWB_register, ARM::VLD2q16wb_register, true, true, true, SingleSpc, 4, 4 ,false},
{ ARM::VLD2q32Pseudo, ARM::VLD2q32, true, false, false, SingleSpc, 4, 2 ,false},
{ ARM::VLD2q32PseudoWB_fixed, ARM::VLD2q32wb_fixed, true, true, false, SingleSpc, 4, 2 ,false},
{ ARM::VLD2q32PseudoWB_register, ARM::VLD2q32wb_register, true, true, true, SingleSpc, 4, 2 ,false},
{ ARM::VLD2q8Pseudo, ARM::VLD2q8, true, false, false, SingleSpc, 4, 8 ,false},
{ ARM::VLD2q8PseudoWB_fixed, ARM::VLD2q8wb_fixed, true, true, false, SingleSpc, 4, 8 ,false},
{ ARM::VLD2q8PseudoWB_register, ARM::VLD2q8wb_register, true, true, true, SingleSpc, 4, 8 ,false},
{ ARM::VLD3DUPd16Pseudo, ARM::VLD3DUPd16, true, false, false, SingleSpc, 3, 4,true},
{ ARM::VLD3DUPd16Pseudo_UPD, ARM::VLD3DUPd16_UPD, true, true, true, SingleSpc, 3, 4,true},
{ ARM::VLD3DUPd32Pseudo, ARM::VLD3DUPd32, true, false, false, SingleSpc, 3, 2,true},
{ ARM::VLD3DUPd32Pseudo_UPD, ARM::VLD3DUPd32_UPD, true, true, true, SingleSpc, 3, 2,true},
{ ARM::VLD3DUPd8Pseudo, ARM::VLD3DUPd8, true, false, false, SingleSpc, 3, 8,true},
{ ARM::VLD3DUPd8Pseudo_UPD, ARM::VLD3DUPd8_UPD, true, true, true, SingleSpc, 3, 8,true},
{ ARM::VLD3LNd16Pseudo, ARM::VLD3LNd16, true, false, false, SingleSpc, 3, 4 ,true},
{ ARM::VLD3LNd16Pseudo_UPD, ARM::VLD3LNd16_UPD, true, true, true, SingleSpc, 3, 4 ,true},
{ ARM::VLD3LNd32Pseudo, ARM::VLD3LNd32, true, false, false, SingleSpc, 3, 2 ,true},
{ ARM::VLD3LNd32Pseudo_UPD, ARM::VLD3LNd32_UPD, true, true, true, SingleSpc, 3, 2 ,true},
{ ARM::VLD3LNd8Pseudo, ARM::VLD3LNd8, true, false, false, SingleSpc, 3, 8 ,true},
{ ARM::VLD3LNd8Pseudo_UPD, ARM::VLD3LNd8_UPD, true, true, true, SingleSpc, 3, 8 ,true},
{ ARM::VLD3LNq16Pseudo, ARM::VLD3LNq16, true, false, false, EvenDblSpc, 3, 4 ,true},
{ ARM::VLD3LNq16Pseudo_UPD, ARM::VLD3LNq16_UPD, true, true, true, EvenDblSpc, 3, 4 ,true},
{ ARM::VLD3LNq32Pseudo, ARM::VLD3LNq32, true, false, false, EvenDblSpc, 3, 2 ,true},
{ ARM::VLD3LNq32Pseudo_UPD, ARM::VLD3LNq32_UPD, true, true, true, EvenDblSpc, 3, 2 ,true},
{ ARM::VLD3d16Pseudo, ARM::VLD3d16, true, false, false, SingleSpc, 3, 4 ,true},
{ ARM::VLD3d16Pseudo_UPD, ARM::VLD3d16_UPD, true, true, true, SingleSpc, 3, 4 ,true},
{ ARM::VLD3d32Pseudo, ARM::VLD3d32, true, false, false, SingleSpc, 3, 2 ,true},
{ ARM::VLD3d32Pseudo_UPD, ARM::VLD3d32_UPD, true, true, true, SingleSpc, 3, 2 ,true},
{ ARM::VLD3d8Pseudo, ARM::VLD3d8, true, false, false, SingleSpc, 3, 8 ,true},
{ ARM::VLD3d8Pseudo_UPD, ARM::VLD3d8_UPD, true, true, true, SingleSpc, 3, 8 ,true},
{ ARM::VLD3q16Pseudo_UPD, ARM::VLD3q16_UPD, true, true, true, EvenDblSpc, 3, 4 ,true},
{ ARM::VLD3q16oddPseudo, ARM::VLD3q16, true, false, false, OddDblSpc, 3, 4 ,true},
{ ARM::VLD3q16oddPseudo_UPD, ARM::VLD3q16_UPD, true, true, true, OddDblSpc, 3, 4 ,true},
{ ARM::VLD3q32Pseudo_UPD, ARM::VLD3q32_UPD, true, true, true, EvenDblSpc, 3, 2 ,true},
{ ARM::VLD3q32oddPseudo, ARM::VLD3q32, true, false, false, OddDblSpc, 3, 2 ,true},
{ ARM::VLD3q32oddPseudo_UPD, ARM::VLD3q32_UPD, true, true, true, OddDblSpc, 3, 2 ,true},
{ ARM::VLD3q8Pseudo_UPD, ARM::VLD3q8_UPD, true, true, true, EvenDblSpc, 3, 8 ,true},
{ ARM::VLD3q8oddPseudo, ARM::VLD3q8, true, false, false, OddDblSpc, 3, 8 ,true},
{ ARM::VLD3q8oddPseudo_UPD, ARM::VLD3q8_UPD, true, true, true, OddDblSpc, 3, 8 ,true},
{ ARM::VLD4DUPd16Pseudo, ARM::VLD4DUPd16, true, false, false, SingleSpc, 4, 4,true},
{ ARM::VLD4DUPd16Pseudo_UPD, ARM::VLD4DUPd16_UPD, true, true, true, SingleSpc, 4, 4,true},
{ ARM::VLD4DUPd32Pseudo, ARM::VLD4DUPd32, true, false, false, SingleSpc, 4, 2,true},
{ ARM::VLD4DUPd32Pseudo_UPD, ARM::VLD4DUPd32_UPD, true, true, true, SingleSpc, 4, 2,true},
{ ARM::VLD4DUPd8Pseudo, ARM::VLD4DUPd8, true, false, false, SingleSpc, 4, 8,true},
{ ARM::VLD4DUPd8Pseudo_UPD, ARM::VLD4DUPd8_UPD, true, true, true, SingleSpc, 4, 8,true},
{ ARM::VLD4LNd16Pseudo, ARM::VLD4LNd16, true, false, false, SingleSpc, 4, 4 ,true},
{ ARM::VLD4LNd16Pseudo_UPD, ARM::VLD4LNd16_UPD, true, true, true, SingleSpc, 4, 4 ,true},
{ ARM::VLD4LNd32Pseudo, ARM::VLD4LNd32, true, false, false, SingleSpc, 4, 2 ,true},
{ ARM::VLD4LNd32Pseudo_UPD, ARM::VLD4LNd32_UPD, true, true, true, SingleSpc, 4, 2 ,true},
{ ARM::VLD4LNd8Pseudo, ARM::VLD4LNd8, true, false, false, SingleSpc, 4, 8 ,true},
{ ARM::VLD4LNd8Pseudo_UPD, ARM::VLD4LNd8_UPD, true, true, true, SingleSpc, 4, 8 ,true},
{ ARM::VLD4LNq16Pseudo, ARM::VLD4LNq16, true, false, false, EvenDblSpc, 4, 4 ,true},
{ ARM::VLD4LNq16Pseudo_UPD, ARM::VLD4LNq16_UPD, true, true, true, EvenDblSpc, 4, 4 ,true},
{ ARM::VLD4LNq32Pseudo, ARM::VLD4LNq32, true, false, false, EvenDblSpc, 4, 2 ,true},
{ ARM::VLD4LNq32Pseudo_UPD, ARM::VLD4LNq32_UPD, true, true, true, EvenDblSpc, 4, 2 ,true},
{ ARM::VLD4d16Pseudo, ARM::VLD4d16, true, false, false, SingleSpc, 4, 4 ,true},
{ ARM::VLD4d16Pseudo_UPD, ARM::VLD4d16_UPD, true, true, true, SingleSpc, 4, 4 ,true},
{ ARM::VLD4d32Pseudo, ARM::VLD4d32, true, false, false, SingleSpc, 4, 2 ,true},
{ ARM::VLD4d32Pseudo_UPD, ARM::VLD4d32_UPD, true, true, true, SingleSpc, 4, 2 ,true},
{ ARM::VLD4d8Pseudo, ARM::VLD4d8, true, false, false, SingleSpc, 4, 8 ,true},
{ ARM::VLD4d8Pseudo_UPD, ARM::VLD4d8_UPD, true, true, true, SingleSpc, 4, 8 ,true},
{ ARM::VLD4q16Pseudo_UPD, ARM::VLD4q16_UPD, true, true, true, EvenDblSpc, 4, 4 ,true},
{ ARM::VLD4q16oddPseudo, ARM::VLD4q16, true, false, false, OddDblSpc, 4, 4 ,true},
{ ARM::VLD4q16oddPseudo_UPD, ARM::VLD4q16_UPD, true, true, true, OddDblSpc, 4, 4 ,true},
{ ARM::VLD4q32Pseudo_UPD, ARM::VLD4q32_UPD, true, true, true, EvenDblSpc, 4, 2 ,true},
{ ARM::VLD4q32oddPseudo, ARM::VLD4q32, true, false, false, OddDblSpc, 4, 2 ,true},
{ ARM::VLD4q32oddPseudo_UPD, ARM::VLD4q32_UPD, true, true, true, OddDblSpc, 4, 2 ,true},
{ ARM::VLD4q8Pseudo_UPD, ARM::VLD4q8_UPD, true, true, true, EvenDblSpc, 4, 8 ,true},
{ ARM::VLD4q8oddPseudo, ARM::VLD4q8, true, false, false, OddDblSpc, 4, 8 ,true},
{ ARM::VLD4q8oddPseudo_UPD, ARM::VLD4q8_UPD, true, true, true, OddDblSpc, 4, 8 ,true},
{ ARM::VST1LNq16Pseudo, ARM::VST1LNd16, false, false, false, EvenDblSpc, 1, 4 ,true},
{ ARM::VST1LNq16Pseudo_UPD, ARM::VST1LNd16_UPD, false, true, true, EvenDblSpc, 1, 4 ,true},
{ ARM::VST1LNq32Pseudo, ARM::VST1LNd32, false, false, false, EvenDblSpc, 1, 2 ,true},
{ ARM::VST1LNq32Pseudo_UPD, ARM::VST1LNd32_UPD, false, true, true, EvenDblSpc, 1, 2 ,true},
{ ARM::VST1LNq8Pseudo, ARM::VST1LNd8, false, false, false, EvenDblSpc, 1, 8 ,true},
{ ARM::VST1LNq8Pseudo_UPD, ARM::VST1LNd8_UPD, false, true, true, EvenDblSpc, 1, 8 ,true},
{ ARM::VST1d64QPseudo, ARM::VST1d64Q, false, false, false, SingleSpc, 4, 1 ,false},
{ ARM::VST1d64QPseudoWB_fixed, ARM::VST1d64Qwb_fixed, false, true, false, SingleSpc, 4, 1 ,false},
{ ARM::VST1d64QPseudoWB_register, ARM::VST1d64Qwb_register, false, true, true, SingleSpc, 4, 1 ,false},
{ ARM::VST1d64TPseudo, ARM::VST1d64T, false, false, false, SingleSpc, 3, 1 ,false},
{ ARM::VST1d64TPseudoWB_fixed, ARM::VST1d64Twb_fixed, false, true, false, SingleSpc, 3, 1 ,false},
{ ARM::VST1d64TPseudoWB_register, ARM::VST1d64Twb_register, false, true, true, SingleSpc, 3, 1 ,false},
{ ARM::VST2LNd16Pseudo, ARM::VST2LNd16, false, false, false, SingleSpc, 2, 4 ,true},
{ ARM::VST2LNd16Pseudo_UPD, ARM::VST2LNd16_UPD, false, true, true, SingleSpc, 2, 4 ,true},
{ ARM::VST2LNd32Pseudo, ARM::VST2LNd32, false, false, false, SingleSpc, 2, 2 ,true},
{ ARM::VST2LNd32Pseudo_UPD, ARM::VST2LNd32_UPD, false, true, true, SingleSpc, 2, 2 ,true},
{ ARM::VST2LNd8Pseudo, ARM::VST2LNd8, false, false, false, SingleSpc, 2, 8 ,true},
{ ARM::VST2LNd8Pseudo_UPD, ARM::VST2LNd8_UPD, false, true, true, SingleSpc, 2, 8 ,true},
{ ARM::VST2LNq16Pseudo, ARM::VST2LNq16, false, false, false, EvenDblSpc, 2, 4,true},
{ ARM::VST2LNq16Pseudo_UPD, ARM::VST2LNq16_UPD, false, true, true, EvenDblSpc, 2, 4,true},
{ ARM::VST2LNq32Pseudo, ARM::VST2LNq32, false, false, false, EvenDblSpc, 2, 2,true},
{ ARM::VST2LNq32Pseudo_UPD, ARM::VST2LNq32_UPD, false, true, true, EvenDblSpc, 2, 2,true},
{ ARM::VST2q16Pseudo, ARM::VST2q16, false, false, false, SingleSpc, 4, 4 ,false},
{ ARM::VST2q16PseudoWB_fixed, ARM::VST2q16wb_fixed, false, true, false, SingleSpc, 4, 4 ,false},
{ ARM::VST2q16PseudoWB_register, ARM::VST2q16wb_register, false, true, true, SingleSpc, 4, 4 ,false},
{ ARM::VST2q32Pseudo, ARM::VST2q32, false, false, false, SingleSpc, 4, 2 ,false},
{ ARM::VST2q32PseudoWB_fixed, ARM::VST2q32wb_fixed, false, true, false, SingleSpc, 4, 2 ,false},
{ ARM::VST2q32PseudoWB_register, ARM::VST2q32wb_register, false, true, true, SingleSpc, 4, 2 ,false},
{ ARM::VST2q8Pseudo, ARM::VST2q8, false, false, false, SingleSpc, 4, 8 ,false},
{ ARM::VST2q8PseudoWB_fixed, ARM::VST2q8wb_fixed, false, true, false, SingleSpc, 4, 8 ,false},
{ ARM::VST2q8PseudoWB_register, ARM::VST2q8wb_register, false, true, true, SingleSpc, 4, 8 ,false},
{ ARM::VST3LNd16Pseudo, ARM::VST3LNd16, false, false, false, SingleSpc, 3, 4 ,true},
{ ARM::VST3LNd16Pseudo_UPD, ARM::VST3LNd16_UPD, false, true, true, SingleSpc, 3, 4 ,true},
{ ARM::VST3LNd32Pseudo, ARM::VST3LNd32, false, false, false, SingleSpc, 3, 2 ,true},
{ ARM::VST3LNd32Pseudo_UPD, ARM::VST3LNd32_UPD, false, true, true, SingleSpc, 3, 2 ,true},
{ ARM::VST3LNd8Pseudo, ARM::VST3LNd8, false, false, false, SingleSpc, 3, 8 ,true},
{ ARM::VST3LNd8Pseudo_UPD, ARM::VST3LNd8_UPD, false, true, true, SingleSpc, 3, 8 ,true},
{ ARM::VST3LNq16Pseudo, ARM::VST3LNq16, false, false, false, EvenDblSpc, 3, 4,true},
{ ARM::VST3LNq16Pseudo_UPD, ARM::VST3LNq16_UPD, false, true, true, EvenDblSpc, 3, 4,true},
{ ARM::VST3LNq32Pseudo, ARM::VST3LNq32, false, false, false, EvenDblSpc, 3, 2,true},
{ ARM::VST3LNq32Pseudo_UPD, ARM::VST3LNq32_UPD, false, true, true, EvenDblSpc, 3, 2,true},
{ ARM::VST3d16Pseudo, ARM::VST3d16, false, false, false, SingleSpc, 3, 4 ,true},
{ ARM::VST3d16Pseudo_UPD, ARM::VST3d16_UPD, false, true, true, SingleSpc, 3, 4 ,true},
{ ARM::VST3d32Pseudo, ARM::VST3d32, false, false, false, SingleSpc, 3, 2 ,true},
{ ARM::VST3d32Pseudo_UPD, ARM::VST3d32_UPD, false, true, true, SingleSpc, 3, 2 ,true},
{ ARM::VST3d8Pseudo, ARM::VST3d8, false, false, false, SingleSpc, 3, 8 ,true},
{ ARM::VST3d8Pseudo_UPD, ARM::VST3d8_UPD, false, true, true, SingleSpc, 3, 8 ,true},
{ ARM::VST3q16Pseudo_UPD, ARM::VST3q16_UPD, false, true, true, EvenDblSpc, 3, 4 ,true},
{ ARM::VST3q16oddPseudo, ARM::VST3q16, false, false, false, OddDblSpc, 3, 4 ,true},
{ ARM::VST3q16oddPseudo_UPD, ARM::VST3q16_UPD, false, true, true, OddDblSpc, 3, 4 ,true},
{ ARM::VST3q32Pseudo_UPD, ARM::VST3q32_UPD, false, true, true, EvenDblSpc, 3, 2 ,true},
{ ARM::VST3q32oddPseudo, ARM::VST3q32, false, false, false, OddDblSpc, 3, 2 ,true},
{ ARM::VST3q32oddPseudo_UPD, ARM::VST3q32_UPD, false, true, true, OddDblSpc, 3, 2 ,true},
{ ARM::VST3q8Pseudo_UPD, ARM::VST3q8_UPD, false, true, true, EvenDblSpc, 3, 8 ,true},
{ ARM::VST3q8oddPseudo, ARM::VST3q8, false, false, false, OddDblSpc, 3, 8 ,true},
{ ARM::VST3q8oddPseudo_UPD, ARM::VST3q8_UPD, false, true, true, OddDblSpc, 3, 8 ,true},
{ ARM::VST4LNd16Pseudo, ARM::VST4LNd16, false, false, false, SingleSpc, 4, 4 ,true},
{ ARM::VST4LNd16Pseudo_UPD, ARM::VST4LNd16_UPD, false, true, true, SingleSpc, 4, 4 ,true},
{ ARM::VST4LNd32Pseudo, ARM::VST4LNd32, false, false, false, SingleSpc, 4, 2 ,true},
{ ARM::VST4LNd32Pseudo_UPD, ARM::VST4LNd32_UPD, false, true, true, SingleSpc, 4, 2 ,true},
{ ARM::VST4LNd8Pseudo, ARM::VST4LNd8, false, false, false, SingleSpc, 4, 8 ,true},
{ ARM::VST4LNd8Pseudo_UPD, ARM::VST4LNd8_UPD, false, true, true, SingleSpc, 4, 8 ,true},
{ ARM::VST4LNq16Pseudo, ARM::VST4LNq16, false, false, false, EvenDblSpc, 4, 4,true},
{ ARM::VST4LNq16Pseudo_UPD, ARM::VST4LNq16_UPD, false, true, true, EvenDblSpc, 4, 4,true},
{ ARM::VST4LNq32Pseudo, ARM::VST4LNq32, false, false, false, EvenDblSpc, 4, 2,true},
{ ARM::VST4LNq32Pseudo_UPD, ARM::VST4LNq32_UPD, false, true, true, EvenDblSpc, 4, 2,true},
{ ARM::VST4d16Pseudo, ARM::VST4d16, false, false, false, SingleSpc, 4, 4 ,true},
{ ARM::VST4d16Pseudo_UPD, ARM::VST4d16_UPD, false, true, true, SingleSpc, 4, 4 ,true},
{ ARM::VST4d32Pseudo, ARM::VST4d32, false, false, false, SingleSpc, 4, 2 ,true},
{ ARM::VST4d32Pseudo_UPD, ARM::VST4d32_UPD, false, true, true, SingleSpc, 4, 2 ,true},
{ ARM::VST4d8Pseudo, ARM::VST4d8, false, false, false, SingleSpc, 4, 8 ,true},
{ ARM::VST4d8Pseudo_UPD, ARM::VST4d8_UPD, false, true, true, SingleSpc, 4, 8 ,true},
{ ARM::VST4q16Pseudo_UPD, ARM::VST4q16_UPD, false, true, true, EvenDblSpc, 4, 4 ,true},
{ ARM::VST4q16oddPseudo, ARM::VST4q16, false, false, false, OddDblSpc, 4, 4 ,true},
{ ARM::VST4q16oddPseudo_UPD, ARM::VST4q16_UPD, false, true, true, OddDblSpc, 4, 4 ,true},
{ ARM::VST4q32Pseudo_UPD, ARM::VST4q32_UPD, false, true, true, EvenDblSpc, 4, 2 ,true},
{ ARM::VST4q32oddPseudo, ARM::VST4q32, false, false, false, OddDblSpc, 4, 2 ,true},
{ ARM::VST4q32oddPseudo_UPD, ARM::VST4q32_UPD, false, true, true, OddDblSpc, 4, 2 ,true},
{ ARM::VST4q8Pseudo_UPD, ARM::VST4q8_UPD, false, true, true, EvenDblSpc, 4, 8 ,true},
{ ARM::VST4q8oddPseudo, ARM::VST4q8, false, false, false, OddDblSpc, 4, 8 ,true},
{ ARM::VST4q8oddPseudo_UPD, ARM::VST4q8_UPD, false, true, true, OddDblSpc, 4, 8 ,true}
};
/// LookupNEONLdSt - Search the NEONLdStTable for information about a NEON
/// load or store pseudo instruction.
static const NEONLdStTableEntry *LookupNEONLdSt(unsigned Opcode) {
const 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 nullptr;
}
/// 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 = (NEONRegSpacing)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));
if (NumRegs > 1 && TableEntry->copyAllListRegs)
MIB.addReg(D1, RegState::Define | getDeadRegState(DstIsDead));
if (NumRegs > 2 && TableEntry->copyAllListRegs)
MIB.addReg(D2, RegState::Define | getDeadRegState(DstIsDead));
if (NumRegs > 3 && TableEntry->copyAllListRegs)
MIB.addReg(D3, RegState::Define | getDeadRegState(DstIsDead));
if (TableEntry->isUpdating)
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->hasWritebackOperand)
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);
// Transfer memoperands.
MIB->setMemRefs(MI.memoperands_begin(), MI.memoperands_end());
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 = (NEONRegSpacing)TableEntry->RegSpacing;
unsigned NumRegs = TableEntry->NumRegs;
MachineInstrBuilder MIB = BuildMI(MBB, MBBI, MI.getDebugLoc(),
TII->get(TableEntry->RealOpc));
unsigned OpIdx = 0;
if (TableEntry->isUpdating)
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->hasWritebackOperand)
MIB.addOperand(MI.getOperand(OpIdx++));
bool SrcIsKill = MI.getOperand(OpIdx).isKill();
bool SrcIsUndef = MI.getOperand(OpIdx).isUndef();
unsigned SrcReg = MI.getOperand(OpIdx++).getReg();
unsigned D0, D1, D2, D3;
GetDSubRegs(SrcReg, RegSpc, TRI, D0, D1, D2, D3);
MIB.addReg(D0, getUndefRegState(SrcIsUndef));
if (NumRegs > 1 && TableEntry->copyAllListRegs)
MIB.addReg(D1, getUndefRegState(SrcIsUndef));
if (NumRegs > 2 && TableEntry->copyAllListRegs)
MIB.addReg(D2, getUndefRegState(SrcIsUndef));
if (NumRegs > 3 && TableEntry->copyAllListRegs)
MIB.addReg(D3, getUndefRegState(SrcIsUndef));
// Copy the predicate operands.
MIB.addOperand(MI.getOperand(OpIdx++));
MIB.addOperand(MI.getOperand(OpIdx++));
if (SrcIsKill && !SrcIsUndef) // Add an implicit kill for the super-reg.
MIB->addRegisterKilled(SrcReg, TRI, true);
else if (!SrcIsUndef)
MIB.addReg(SrcReg, RegState::Implicit); // Add implicit uses for src reg.
TransferImpOps(MI, MIB, MIB);
// Transfer memoperands.
MIB->setMemRefs(MI.memoperands_begin(), MI.memoperands_end());
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 = (NEONRegSpacing)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 = 0, D1 = 0, D2 = 0, D3 = 0;
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->isUpdating)
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->hasWritebackOperand)
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);
// Transfer memoperands.
MIB->setMemRefs(MI.memoperands_begin(), MI.memoperands_end());
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) {
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);
// 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++));
// Add an implicit kill and use for the super-reg.
MIB.addReg(SrcReg, RegState::Implicit | getKillRegState(SrcIsKill));
TransferImpOps(MI, MIB, MIB);
MI.eraseFromParent();
}
static bool IsAnAddressOperand(const MachineOperand &MO) {
// This check is overly conservative. Unless we are certain that the machine
// operand is not a symbol reference, we return that it is a symbol reference.
// This is important as the load pair may not be split up Windows.
switch (MO.getType()) {
case MachineOperand::MO_Register:
case MachineOperand::MO_Immediate:
case MachineOperand::MO_CImmediate:
case MachineOperand::MO_FPImmediate:
return false;
case MachineOperand::MO_MachineBasicBlock:
return true;
case MachineOperand::MO_FrameIndex:
return false;
case MachineOperand::MO_ConstantPoolIndex:
case MachineOperand::MO_TargetIndex:
case MachineOperand::MO_JumpTableIndex:
case MachineOperand::MO_ExternalSymbol:
case MachineOperand::MO_GlobalAddress:
case MachineOperand::MO_BlockAddress:
return true;
case MachineOperand::MO_RegisterMask:
case MachineOperand::MO_RegisterLiveOut:
return false;
case MachineOperand::MO_Metadata:
case MachineOperand::MO_MCSymbol:
return true;
case MachineOperand::MO_CFIIndex:
return false;
}
llvm_unreachable("unhandled machine operand type");
}
void ARMExpandPseudo::ExpandMOV32BitImm(MachineBasicBlock &MBB,
MachineBasicBlock::iterator &MBBI) {
MachineInstr &MI = *MBBI;
unsigned Opcode = MI.getOpcode();
unsigned PredReg = 0;
ARMCC::CondCodes Pred = 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);
bool RequiresBundling = STI->isTargetWindows() && IsAnAddressOperand(MO);
MachineInstrBuilder LO16, HI16;
if (!STI->hasV6T2Ops() &&
(Opcode == ARM::MOVi32imm || Opcode == ARM::MOVCCi32imm)) {
// FIXME Windows CE supports older ARM CPUs
assert(!STI->isTargetWindows() && "Windows on ARM requires ARMv7+");
// 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();
return;
}
unsigned LO16Opc = 0;
unsigned HI16Opc = 0;
if (Opcode == ARM::t2MOVi32imm || Opcode == ARM::t2MOVCCi32imm) {
LO16Opc = ARM::t2MOVi16;
HI16Opc = ARM::t2MOVTi16;
} else {
LO16Opc = ARM::MOVi16;
HI16Opc = ARM::MOVTi16;
}
LO16 = BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(LO16Opc), DstReg);
HI16 = BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(HI16Opc))
.addReg(DstReg, RegState::Define | getDeadRegState(DstIsDead))
.addReg(DstReg);
switch (MO.getType()) {
case MachineOperand::MO_Immediate: {
unsigned Imm = MO.getImm();
unsigned Lo16 = Imm & 0xffff;
unsigned Hi16 = (Imm >> 16) & 0xffff;
LO16 = LO16.addImm(Lo16);
HI16 = HI16.addImm(Hi16);
break;
}
case MachineOperand::MO_ExternalSymbol: {
const char *ES = MO.getSymbolName();
unsigned TF = MO.getTargetFlags();
LO16 = LO16.addExternalSymbol(ES, TF | ARMII::MO_LO16);
HI16 = HI16.addExternalSymbol(ES, TF | ARMII::MO_HI16);
break;
}
default: {
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);
break;
}
}
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);
if (RequiresBundling)
finalizeBundle(MBB, &*LO16, &*MBBI);
TransferImpOps(MI, LO16, HI16);
MI.eraseFromParent();
}
bool ARMExpandPseudo::ExpandMI(MachineBasicBlock &MBB,
MachineBasicBlock::iterator MBBI) {
MachineInstr &MI = *MBBI;
unsigned Opcode = MI.getOpcode();
switch (Opcode) {
default:
return false;
case ARM::VMOVScc:
case ARM::VMOVDcc: {
unsigned newOpc = Opcode == ARM::VMOVScc ? ARM::VMOVS : ARM::VMOVD;
BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(newOpc),
MI.getOperand(1).getReg())
.addOperand(MI.getOperand(2))
.addImm(MI.getOperand(3).getImm()) // 'pred'
.addOperand(MI.getOperand(4));
MI.eraseFromParent();
return true;
}
case ARM::t2MOVCCr:
case ARM::MOVCCr: {
unsigned Opc = AFI->isThumbFunction() ? ARM::t2MOVr : ARM::MOVr;
BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(Opc),
MI.getOperand(1).getReg())
.addOperand(MI.getOperand(2))
.addImm(MI.getOperand(3).getImm()) // 'pred'
.addOperand(MI.getOperand(4))
.addReg(0); // 's' bit
MI.eraseFromParent();
return true;
}
case ARM::MOVCCsi: {
BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(ARM::MOVsi),
(MI.getOperand(1).getReg()))
.addOperand(MI.getOperand(2))
.addImm(MI.getOperand(3).getImm())
.addImm(MI.getOperand(4).getImm()) // 'pred'
.addOperand(MI.getOperand(5))
.addReg(0); // 's' bit
MI.eraseFromParent();
return true;
}
case ARM::MOVCCsr: {
BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(ARM::MOVsr),
(MI.getOperand(1).getReg()))
.addOperand(MI.getOperand(2))
.addOperand(MI.getOperand(3))
.addImm(MI.getOperand(4).getImm())
.addImm(MI.getOperand(5).getImm()) // 'pred'
.addOperand(MI.getOperand(6))
.addReg(0); // 's' bit
MI.eraseFromParent();
return true;
}
case ARM::t2MOVCCi16:
case ARM::MOVCCi16: {
unsigned NewOpc = AFI->isThumbFunction() ? ARM::t2MOVi16 : ARM::MOVi16;
BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(NewOpc),
MI.getOperand(1).getReg())
.addImm(MI.getOperand(2).getImm())
.addImm(MI.getOperand(3).getImm()) // 'pred'
.addOperand(MI.getOperand(4));
MI.eraseFromParent();
return true;
}
case ARM::t2MOVCCi:
case ARM::MOVCCi: {
unsigned Opc = AFI->isThumbFunction() ? ARM::t2MOVi : ARM::MOVi;
BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(Opc),
MI.getOperand(1).getReg())
.addImm(MI.getOperand(2).getImm())
.addImm(MI.getOperand(3).getImm()) // 'pred'
.addOperand(MI.getOperand(4))
.addReg(0); // 's' bit
MI.eraseFromParent();
return true;
}
case ARM::t2MVNCCi:
case ARM::MVNCCi: {
unsigned Opc = AFI->isThumbFunction() ? ARM::t2MVNi : ARM::MVNi;
BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(Opc),
MI.getOperand(1).getReg())
.addImm(MI.getOperand(2).getImm())
.addImm(MI.getOperand(3).getImm()) // 'pred'
.addOperand(MI.getOperand(4))
.addReg(0); // 's' bit
MI.eraseFromParent();
return true;
}
case ARM::t2MOVCClsl:
case ARM::t2MOVCClsr:
case ARM::t2MOVCCasr:
case ARM::t2MOVCCror: {
unsigned NewOpc;
switch (Opcode) {
case ARM::t2MOVCClsl: NewOpc = ARM::t2LSLri; break;
case ARM::t2MOVCClsr: NewOpc = ARM::t2LSRri; break;
case ARM::t2MOVCCasr: NewOpc = ARM::t2ASRri; break;
case ARM::t2MOVCCror: NewOpc = ARM::t2RORri; break;
default: llvm_unreachable("unexpeced conditional move");
}
BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(NewOpc),
MI.getOperand(1).getReg())
.addOperand(MI.getOperand(2))
.addImm(MI.getOperand(3).getImm())
.addImm(MI.getOperand(4).getImm()) // 'pred'
.addOperand(MI.getOperand(5))
.addReg(0); // 's' bit
MI.eraseFromParent();
return true;
}
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)) {
int32_t NumBytes = AFI->getFramePtrSpillOffset();
unsigned FramePtr = RI.getFrameRegister(MF);
assert(MF.getSubtarget().getFrameLowering()->hasFP(MF) &&
"base pointer without frame pointer?");
if (AFI->isThumb2Function()) {
emitT2RegPlusImmediate(MBB, MBBI, MI.getDebugLoc(), ARM::R6,
FramePtr, -NumBytes, ARMCC::AL, 0, *TII);
} else if (AFI->isThumbFunction()) {
emitThumbRegPlusImmediate(MBB, MBBI, MI.getDebugLoc(), ARM::R6,
FramePtr, -NumBytes, *TII, RI);
} else {
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();
return true;
}
case ARM::MOVsrl_flag:
case ARM::MOVsra_flag: {
// These are just fancy MOVs instructions.
AddDefaultPred(BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(ARM::MOVsi),
MI.getOperand(0).getReg())
.addOperand(MI.getOperand(1))
.addImm(ARM_AM::getSORegOpc((Opcode == ARM::MOVsrl_flag ?
ARM_AM::lsr : ARM_AM::asr),
1)))
.addReg(ARM::CPSR, RegState::Define);
MI.eraseFromParent();
return true;
}
case ARM::RRX: {
// This encodes as "MOVs Rd, Rm, rrx
MachineInstrBuilder MIB =
AddDefaultPred(BuildMI(MBB, MBBI, MI.getDebugLoc(),TII->get(ARM::MOVsi),
MI.getOperand(0).getReg())
.addOperand(MI.getOperand(1))
.addImm(ARM_AM::getSORegOpc(ARM_AM::rrx, 0)))
.addReg(0);
TransferImpOps(MI, MIB, MIB);
MI.eraseFromParent();
return true;
}
case ARM::tTPsoft:
case ARM::TPsoft: {
MachineInstrBuilder MIB;
if (Opcode == ARM::tTPsoft)
MIB = BuildMI(MBB, MBBI, MI.getDebugLoc(),
TII->get( ARM::tBL))
.addImm((unsigned)ARMCC::AL).addReg(0)
.addExternalSymbol("__aeabi_read_tp", 0);
else
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();
return true;
}
case ARM::tLDRpci_pic:
case ARM::t2LDRpci_pic: {
unsigned NewLdOpc = (Opcode == ARM::tLDRpci_pic)
? ARM::tLDRpci : ARM::t2LDRpci;
unsigned DstReg = MI.getOperand(0).getReg();
bool DstIsDead = MI.getOperand(0).isDead();
MachineInstrBuilder MIB1 =
AddDefaultPred(BuildMI(MBB, MBBI, MI.getDebugLoc(),
TII->get(NewLdOpc), DstReg)
.addOperand(MI.getOperand(1)));
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();
return true;
}
case ARM::LDRLIT_ga_abs:
case ARM::LDRLIT_ga_pcrel:
case ARM::LDRLIT_ga_pcrel_ldr:
case ARM::tLDRLIT_ga_abs:
case ARM::tLDRLIT_ga_pcrel: {
unsigned DstReg = MI.getOperand(0).getReg();
bool DstIsDead = MI.getOperand(0).isDead();
const MachineOperand &MO1 = MI.getOperand(1);
const GlobalValue *GV = MO1.getGlobal();
bool IsARM =
Opcode != ARM::tLDRLIT_ga_pcrel && Opcode != ARM::tLDRLIT_ga_abs;
bool IsPIC =
Opcode != ARM::LDRLIT_ga_abs && Opcode != ARM::tLDRLIT_ga_abs;
unsigned LDRLITOpc = IsARM ? ARM::LDRi12 : ARM::tLDRpci;
unsigned PICAddOpc =
IsARM
? (Opcode == ARM::LDRLIT_ga_pcrel_ldr ? ARM::PICADD : ARM::PICLDR)
: ARM::tPICADD;
// We need a new const-pool entry to load from.
MachineConstantPool *MCP = MBB.getParent()->getConstantPool();
unsigned ARMPCLabelIndex = 0;
MachineConstantPoolValue *CPV;
if (IsPIC) {
unsigned PCAdj = IsARM ? 8 : 4;
ARMPCLabelIndex = AFI->createPICLabelUId();
CPV = ARMConstantPoolConstant::Create(GV, ARMPCLabelIndex,
ARMCP::CPValue, PCAdj);
} else
CPV = ARMConstantPoolConstant::Create(GV, ARMCP::no_modifier);
MachineInstrBuilder MIB =
BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(LDRLITOpc), DstReg)
.addConstantPoolIndex(MCP->getConstantPoolIndex(CPV, 4));
if (IsARM)
MIB.addImm(0);
AddDefaultPred(MIB);
if (IsPIC) {
MachineInstrBuilder MIB =
BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(PICAddOpc))
.addReg(DstReg, RegState::Define | getDeadRegState(DstIsDead))
.addReg(DstReg)
.addImm(ARMPCLabelIndex);
if (IsARM)
AddDefaultPred(MIB);
}
MI.eraseFromParent();
return true;
}
case ARM::MOV_ga_pcrel:
case ARM::MOV_ga_pcrel_ldr:
case ARM::t2MOV_ga_pcrel: {
// Expand into movw + movw. Also "add pc" / ldr [pc] in PIC mode.
unsigned LabelId = AFI->createPICLabelUId();
unsigned DstReg = MI.getOperand(0).getReg();
bool DstIsDead = MI.getOperand(0).isDead();
const MachineOperand &MO1 = MI.getOperand(1);
const GlobalValue *GV = MO1.getGlobal();
unsigned TF = MO1.getTargetFlags();
bool isARM = Opcode != ARM::t2MOV_ga_pcrel;
unsigned LO16Opc = isARM ? ARM::MOVi16_ga_pcrel : ARM::t2MOVi16_ga_pcrel;
unsigned HI16Opc = isARM ? ARM::MOVTi16_ga_pcrel :ARM::t2MOVTi16_ga_pcrel;
unsigned LO16TF = TF | ARMII::MO_LO16;
unsigned HI16TF = TF | ARMII::MO_HI16;
unsigned PICAddOpc = isARM
? (Opcode == ARM::MOV_ga_pcrel_ldr ? ARM::PICLDR : ARM::PICADD)
: ARM::tPICADD;
MachineInstrBuilder MIB1 = BuildMI(MBB, MBBI, MI.getDebugLoc(),
TII->get(LO16Opc), DstReg)
.addGlobalAddress(GV, MO1.getOffset(), TF | LO16TF)
.addImm(LabelId);
BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(HI16Opc), DstReg)
.addReg(DstReg)
.addGlobalAddress(GV, MO1.getOffset(), TF | HI16TF)
.addImm(LabelId);
MachineInstrBuilder MIB3 = BuildMI(MBB, MBBI, MI.getDebugLoc(),
TII->get(PICAddOpc))
.addReg(DstReg, RegState::Define | getDeadRegState(DstIsDead))
.addReg(DstReg).addImm(LabelId);
if (isARM) {
AddDefaultPred(MIB3);
if (Opcode == ARM::MOV_ga_pcrel_ldr)
MIB3->setMemRefs(MI.memoperands_begin(), MI.memoperands_end());
}
TransferImpOps(MI, MIB1, MIB3);
MI.eraseFromParent();
return true;
}
case ARM::MOVi32imm:
case ARM::MOVCCi32imm:
case ARM::t2MOVi32imm:
case ARM::t2MOVCCi32imm:
ExpandMOV32BitImm(MBB, MBBI);
return true;
case ARM::SUBS_PC_LR: {
MachineInstrBuilder MIB =
BuildMI(MBB, MBBI, MI.getDebugLoc(), TII->get(ARM::SUBri), ARM::PC)
.addReg(ARM::LR)
.addOperand(MI.getOperand(0))
.addOperand(MI.getOperand(1))
.addOperand(MI.getOperand(2))
.addReg(ARM::CPSR, RegState::Undef);
TransferImpOps(MI, MIB, MIB);
MI.eraseFromParent();
return true;
}
case ARM::VLDMQIA: {
unsigned NewOpc = ARM::VLDMDIA;
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);
MIB.setMemRefs(MI.memoperands_begin(), MI.memoperands_end());
MI.eraseFromParent();
return true;
}
case ARM::VSTMQIA: {
unsigned NewOpc = ARM::VSTMDIA;
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);
MIB.setMemRefs(MI.memoperands_begin(), MI.memoperands_end());
MI.eraseFromParent();
return true;
}
case ARM::VLD2q8Pseudo:
case ARM::VLD2q16Pseudo:
case ARM::VLD2q32Pseudo:
case ARM::VLD2q8PseudoWB_fixed:
case ARM::VLD2q16PseudoWB_fixed:
case ARM::VLD2q32PseudoWB_fixed:
case ARM::VLD2q8PseudoWB_register:
case ARM::VLD2q16PseudoWB_register:
case ARM::VLD2q32PseudoWB_register:
case ARM::VLD3d8Pseudo:
case ARM::VLD3d16Pseudo:
case ARM::VLD3d32Pseudo:
case ARM::VLD1d64TPseudo:
case ARM::VLD1d64TPseudoWB_fixed:
case ARM::VLD3d8Pseudo_UPD:
case ARM::VLD3d16Pseudo_UPD:
case ARM::VLD3d32Pseudo_UPD:
case ARM::VLD3q8Pseudo_UPD:
case ARM::VLD3q16Pseudo_UPD:
case ARM::VLD3q32Pseudo_UPD:
case ARM::VLD3q8oddPseudo:
case ARM::VLD3q16oddPseudo:
case ARM::VLD3q32oddPseudo:
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::VLD1d64QPseudoWB_fixed:
case ARM::VLD4d8Pseudo_UPD:
case ARM::VLD4d16Pseudo_UPD:
case ARM::VLD4d32Pseudo_UPD:
case ARM::VLD4q8Pseudo_UPD:
case ARM::VLD4q16Pseudo_UPD:
case ARM::VLD4q32Pseudo_UPD:
case ARM::VLD4q8oddPseudo:
case ARM::VLD4q16oddPseudo:
case ARM::VLD4q32oddPseudo:
case ARM::VLD4q8oddPseudo_UPD:
case ARM::VLD4q16oddPseudo_UPD:
case ARM::VLD4q32oddPseudo_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);
return true;
case ARM::VST2q8Pseudo:
case ARM::VST2q16Pseudo:
case ARM::VST2q32Pseudo:
case ARM::VST2q8PseudoWB_fixed:
case ARM::VST2q16PseudoWB_fixed:
case ARM::VST2q32PseudoWB_fixed:
case ARM::VST2q8PseudoWB_register:
case ARM::VST2q16PseudoWB_register:
case ARM::VST2q32PseudoWB_register:
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::VST1d64TPseudoWB_fixed:
case ARM::VST1d64TPseudoWB_register:
case ARM::VST3q8Pseudo_UPD:
case ARM::VST3q16Pseudo_UPD:
case ARM::VST3q32Pseudo_UPD:
case ARM::VST3q8oddPseudo:
case ARM::VST3q16oddPseudo:
case ARM::VST3q32oddPseudo:
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::VST1d64QPseudoWB_fixed:
case ARM::VST1d64QPseudoWB_register:
case ARM::VST4q8Pseudo_UPD:
case ARM::VST4q16Pseudo_UPD:
case ARM::VST4q32Pseudo_UPD:
case ARM::VST4q8oddPseudo:
case ARM::VST4q16oddPseudo:
case ARM::VST4q32oddPseudo:
case ARM::VST4q8oddPseudo_UPD:
case ARM::VST4q16oddPseudo_UPD:
case ARM::VST4q32oddPseudo_UPD:
ExpandVST(MBBI);
return true;
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);
return true;
case ARM::VTBL3Pseudo: ExpandVTBL(MBBI, ARM::VTBL3, false); return true;
case ARM::VTBL4Pseudo: ExpandVTBL(MBBI, ARM::VTBL4, false); return true;
case ARM::VTBX3Pseudo: ExpandVTBL(MBBI, ARM::VTBX3, true); return true;
case ARM::VTBX4Pseudo: ExpandVTBL(MBBI, ARM::VTBX4, true); return true;
}
}
bool ARMExpandPseudo::ExpandMBB(MachineBasicBlock &MBB) {
bool Modified = false;
MachineBasicBlock::iterator MBBI = MBB.begin(), E = MBB.end();
while (MBBI != E) {
MachineBasicBlock::iterator NMBBI = std::next(MBBI);
Modified |= ExpandMI(MBB, MBBI);
MBBI = NMBBI;
}
return Modified;
}
bool ARMExpandPseudo::runOnMachineFunction(MachineFunction &MF) {
const TargetMachine &TM = MF.getTarget();
TII = static_cast<const ARMBaseInstrInfo *>(
TM.getSubtargetImpl()->getInstrInfo());
TRI = TM.getSubtargetImpl()->getRegisterInfo();
STI = &TM.getSubtarget<ARMSubtarget>();
AFI = MF.getInfo<ARMFunctionInfo>();
bool Modified = false;
for (MachineFunction::iterator MFI = MF.begin(), E = MF.end(); MFI != E;
++MFI)
Modified |= ExpandMBB(*MFI);
if (VerifyARMPseudo)
MF.verify(this, "After expanding ARM pseudo instructions.");
return Modified;
}
/// createARMExpandPseudoPass - returns an instance of the pseudo instruction
/// expansion pass.
FunctionPass *llvm::createARMExpandPseudoPass() {
return new ARMExpandPseudo();
}
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