#include "SystemZFrameLowering.h"
#include "SystemZCallingConv.h"
#include "SystemZInstrBuilder.h"
+#include "SystemZInstrInfo.h"
#include "SystemZMachineFunctionInfo.h"
-#include "SystemZTargetMachine.h"
+#include "SystemZRegisterInfo.h"
+#include "SystemZSubtarget.h"
#include "llvm/CodeGen/MachineModuleInfo.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/CodeGen/RegisterScavenging.h"
using namespace llvm;
namespace {
- // The ABI-defined register save slots, relative to the incoming stack
- // pointer.
- static const TargetFrameLowering::SpillSlot SpillOffsetTable[] = {
- { SystemZ::R2D, 0x10 },
- { SystemZ::R3D, 0x18 },
- { SystemZ::R4D, 0x20 },
- { SystemZ::R5D, 0x28 },
- { SystemZ::R6D, 0x30 },
- { SystemZ::R7D, 0x38 },
- { SystemZ::R8D, 0x40 },
- { SystemZ::R9D, 0x48 },
- { SystemZ::R10D, 0x50 },
- { SystemZ::R11D, 0x58 },
- { SystemZ::R12D, 0x60 },
- { SystemZ::R13D, 0x68 },
- { SystemZ::R14D, 0x70 },
- { SystemZ::R15D, 0x78 },
- { SystemZ::F0D, 0x80 },
- { SystemZ::F2D, 0x88 },
- { SystemZ::F4D, 0x90 },
- { SystemZ::F6D, 0x98 }
- };
-}
-
-SystemZFrameLowering::SystemZFrameLowering(const SystemZTargetMachine &tm,
- const SystemZSubtarget &sti)
- : TargetFrameLowering(TargetFrameLowering::StackGrowsDown, 8,
- -SystemZMC::CallFrameSize, 8),
- TM(tm), STI(sti) {
+// The ABI-defined register save slots, relative to the incoming stack
+// pointer.
+static const TargetFrameLowering::SpillSlot SpillOffsetTable[] = {
+ { SystemZ::R2D, 0x10 },
+ { SystemZ::R3D, 0x18 },
+ { SystemZ::R4D, 0x20 },
+ { SystemZ::R5D, 0x28 },
+ { SystemZ::R6D, 0x30 },
+ { SystemZ::R7D, 0x38 },
+ { SystemZ::R8D, 0x40 },
+ { SystemZ::R9D, 0x48 },
+ { SystemZ::R10D, 0x50 },
+ { SystemZ::R11D, 0x58 },
+ { SystemZ::R12D, 0x60 },
+ { SystemZ::R13D, 0x68 },
+ { SystemZ::R14D, 0x70 },
+ { SystemZ::R15D, 0x78 },
+ { SystemZ::F0D, 0x80 },
+ { SystemZ::F2D, 0x88 },
+ { SystemZ::F4D, 0x90 },
+ { SystemZ::F6D, 0x98 }
+};
+} // end anonymous namespace
+
+SystemZFrameLowering::SystemZFrameLowering()
+ : TargetFrameLowering(TargetFrameLowering::StackGrowsDown, 8,
+ -SystemZMC::CallFrameSize, 8) {
// Create a mapping from register number to save slot offset.
RegSpillOffsets.grow(SystemZ::NUM_TARGET_REGS);
for (unsigned I = 0, E = array_lengthof(SpillOffsetTable); I != E; ++I)
RegScavenger *RS) const {
MachineFrameInfo *MFFrame = MF.getFrameInfo();
MachineRegisterInfo &MRI = MF.getRegInfo();
- const TargetRegisterInfo *TRI = MF.getTarget().getRegisterInfo();
+ const TargetRegisterInfo *TRI = MF.getSubtarget().getRegisterInfo();
bool HasFP = hasFP(MF);
SystemZMachineFunctionInfo *MFI = MF.getInfo<SystemZMachineFunctionInfo>();
bool IsVarArg = MF.getFunction()->isVarArg();
// save and restore the stack pointer at the same time, via STMG and LMG.
// This allows the deallocation to be done by the LMG, rather than needing
// a separate %r15 addition.
- const uint16_t *CSRegs = TRI->getCalleeSavedRegs(&MF);
+ const MCPhysReg *CSRegs = TRI->getCalleeSavedRegs(&MF);
for (unsigned I = 0; CSRegs[I]; ++I) {
unsigned Reg = CSRegs[I];
if (SystemZ::GR64BitRegClass.contains(Reg) && MRI.isPhysRegUsed(Reg)) {
// instruction, or an implicit one that comes between the explicit start
// and end registers.
static void addSavedGPR(MachineBasicBlock &MBB, MachineInstrBuilder &MIB,
- const SystemZTargetMachine &TM,
unsigned GPR64, bool IsImplicit) {
- const SystemZRegisterInfo *RI = TM.getRegisterInfo();
- unsigned GPR32 = RI->getSubReg(GPR64, SystemZ::subreg_32bit);
+ const TargetRegisterInfo *RI =
+ MBB.getParent()->getSubtarget().getRegisterInfo();
+ unsigned GPR32 = RI->getSubReg(GPR64, SystemZ::subreg_l32);
bool IsLive = MBB.isLiveIn(GPR64) || MBB.isLiveIn(GPR32);
if (!IsLive || !IsImplicit) {
MIB.addReg(GPR64, getImplRegState(IsImplicit) | getKillRegState(!IsLive));
return false;
MachineFunction &MF = *MBB.getParent();
- const TargetInstrInfo *TII = MF.getTarget().getInstrInfo();
+ const TargetInstrInfo *TII = MF.getSubtarget().getInstrInfo();
SystemZMachineFunctionInfo *ZFI = MF.getInfo<SystemZMachineFunctionInfo>();
bool IsVarArg = MF.getFunction()->isVarArg();
DebugLoc DL = MBBI != MBB.end() ? MBBI->getDebugLoc() : DebugLoc();
MachineInstrBuilder MIB = BuildMI(MBB, MBBI, DL, TII->get(SystemZ::STMG));
// Add the explicit register operands.
- addSavedGPR(MBB, MIB, TM, LowGPR, false);
- addSavedGPR(MBB, MIB, TM, HighGPR, false);
+ addSavedGPR(MBB, MIB, LowGPR, false);
+ addSavedGPR(MBB, MIB, HighGPR, false);
// Add the address.
MIB.addReg(SystemZ::R15D).addImm(StartOffset);
for (unsigned I = 0, E = CSI.size(); I != E; ++I) {
unsigned Reg = CSI[I].getReg();
if (SystemZ::GR64BitRegClass.contains(Reg))
- addSavedGPR(MBB, MIB, TM, Reg, true);
+ addSavedGPR(MBB, MIB, Reg, true);
}
// ...likewise GPR varargs.
if (IsVarArg)
for (unsigned I = ZFI->getVarArgsFirstGPR(); I < SystemZ::NumArgGPRs; ++I)
- addSavedGPR(MBB, MIB, TM, SystemZ::ArgGPRs[I], true);
+ addSavedGPR(MBB, MIB, SystemZ::ArgGPRs[I], true);
}
// Save FPRs in the normal TargetInstrInfo way.
return false;
MachineFunction &MF = *MBB.getParent();
- const TargetInstrInfo *TII = MF.getTarget().getInstrInfo();
+ const TargetInstrInfo *TII = MF.getSubtarget().getInstrInfo();
SystemZMachineFunctionInfo *ZFI = MF.getInfo<SystemZMachineFunctionInfo>();
bool HasFP = hasFP(MF);
DebugLoc DL = MBBI != MBB.end() ? MBBI->getDebugLoc() : DebugLoc();
void SystemZFrameLowering::emitPrologue(MachineFunction &MF) const {
MachineBasicBlock &MBB = MF.front();
MachineFrameInfo *MFFrame = MF.getFrameInfo();
- const SystemZInstrInfo *ZII =
- static_cast<const SystemZInstrInfo*>(MF.getTarget().getInstrInfo());
+ auto *ZII =
+ static_cast<const SystemZInstrInfo *>(MF.getSubtarget().getInstrInfo());
SystemZMachineFunctionInfo *ZFI = MF.getInfo<SystemZMachineFunctionInfo>();
MachineBasicBlock::iterator MBBI = MBB.begin();
MachineModuleInfo &MMI = MF.getMMI();
llvm_unreachable("Couldn't skip over GPR saves");
// Add CFI for the GPR saves.
- MCSymbol *GPRSaveLabel = MMI.getContext().CreateTempSymbol();
- BuildMI(MBB, MBBI, DL,
- ZII->get(TargetOpcode::PROLOG_LABEL)).addSym(GPRSaveLabel);
- for (std::vector<CalleeSavedInfo>::const_iterator
- I = CSI.begin(), E = CSI.end(); I != E; ++I) {
- unsigned Reg = I->getReg();
+ for (auto &Save : CSI) {
+ unsigned Reg = Save.getReg();
if (SystemZ::GR64BitRegClass.contains(Reg)) {
int64_t Offset = SPOffsetFromCFA + RegSpillOffsets[Reg];
- MMI.addFrameInst(MCCFIInstruction::createOffset(
- GPRSaveLabel, MRI->getDwarfRegNum(Reg, true), Offset));
+ unsigned CFIIndex = MMI.addFrameInst(MCCFIInstruction::createOffset(
+ nullptr, MRI->getDwarfRegNum(Reg, true), Offset));
+ BuildMI(MBB, MBBI, DL, ZII->get(TargetOpcode::CFI_INSTRUCTION))
+ .addCFIIndex(CFIIndex);
}
}
}
emitIncrement(MBB, MBBI, DL, SystemZ::R15D, Delta, ZII);
// Add CFI for the allocation.
- MCSymbol *AdjustSPLabel = MMI.getContext().CreateTempSymbol();
- BuildMI(MBB, MBBI, DL, ZII->get(TargetOpcode::PROLOG_LABEL))
- .addSym(AdjustSPLabel);
- MMI.addFrameInst(MCCFIInstruction::createDefCfaOffset(
- AdjustSPLabel, SPOffsetFromCFA + Delta));
+ unsigned CFIIndex = MMI.addFrameInst(
+ MCCFIInstruction::createDefCfaOffset(nullptr, SPOffsetFromCFA + Delta));
+ BuildMI(MBB, MBBI, DL, ZII->get(TargetOpcode::CFI_INSTRUCTION))
+ .addCFIIndex(CFIIndex);
SPOffsetFromCFA += Delta;
}
.addReg(SystemZ::R15D);
// Add CFI for the new frame location.
- MCSymbol *SetFPLabel = MMI.getContext().CreateTempSymbol();
- BuildMI(MBB, MBBI, DL, ZII->get(TargetOpcode::PROLOG_LABEL))
- .addSym(SetFPLabel);
unsigned HardFP = MRI->getDwarfRegNum(SystemZ::R11D, true);
- MMI.addFrameInst(
- MCCFIInstruction::createDefCfaRegister(SetFPLabel, HardFP));
+ unsigned CFIIndex = MMI.addFrameInst(
+ MCCFIInstruction::createDefCfaRegister(nullptr, HardFP));
+ BuildMI(MBB, MBBI, DL, ZII->get(TargetOpcode::CFI_INSTRUCTION))
+ .addCFIIndex(CFIIndex);
// Mark the FramePtr as live at the beginning of every block except
// the entry block. (We'll have marked R11 as live on entry when
// saving the GPRs.)
- for (MachineFunction::iterator
- I = llvm::next(MF.begin()), E = MF.end(); I != E; ++I)
+ for (auto I = std::next(MF.begin()), E = MF.end(); I != E; ++I)
I->addLiveIn(SystemZ::R11D);
}
// Skip over the FPR saves.
- MCSymbol *FPRSaveLabel = 0;
- for (std::vector<CalleeSavedInfo>::const_iterator
- I = CSI.begin(), E = CSI.end(); I != E; ++I) {
- unsigned Reg = I->getReg();
+ SmallVector<unsigned, 8> CFIIndexes;
+ for (auto &Save : CSI) {
+ unsigned Reg = Save.getReg();
if (SystemZ::FP64BitRegClass.contains(Reg)) {
if (MBBI != MBB.end() &&
(MBBI->getOpcode() == SystemZ::STD ||
llvm_unreachable("Couldn't skip over FPR save");
// Add CFI for the this save.
- if (!FPRSaveLabel)
- FPRSaveLabel = MMI.getContext().CreateTempSymbol();
- unsigned Reg = MRI->getDwarfRegNum(I->getReg(), true);
- int64_t Offset = getFrameIndexOffset(MF, I->getFrameIdx());
- MMI.addFrameInst(MCCFIInstruction::createOffset(
- FPRSaveLabel, Reg, SPOffsetFromCFA + Offset));
+ unsigned DwarfReg = MRI->getDwarfRegNum(Reg, true);
+ int64_t Offset = getFrameIndexOffset(MF, Save.getFrameIdx());
+ unsigned CFIIndex = MMI.addFrameInst(MCCFIInstruction::createOffset(
+ nullptr, DwarfReg, SPOffsetFromCFA + Offset));
+ CFIIndexes.push_back(CFIIndex);
}
}
// Complete the CFI for the FPR saves, modelling them as taking effect
// after the last save.
- if (FPRSaveLabel)
- BuildMI(MBB, MBBI, DL, ZII->get(TargetOpcode::PROLOG_LABEL))
- .addSym(FPRSaveLabel);
+ for (auto CFIIndex : CFIIndexes) {
+ BuildMI(MBB, MBBI, DL, ZII->get(TargetOpcode::CFI_INSTRUCTION))
+ .addCFIIndex(CFIIndex);
+ }
}
void SystemZFrameLowering::emitEpilogue(MachineFunction &MF,
MachineBasicBlock &MBB) const {
MachineBasicBlock::iterator MBBI = MBB.getLastNonDebugInstr();
- const SystemZInstrInfo *ZII =
- static_cast<const SystemZInstrInfo*>(MF.getTarget().getInstrInfo());
+ auto *ZII =
+ static_cast<const SystemZInstrInfo *>(MF.getSubtarget().getInstrInfo());
SystemZMachineFunctionInfo *ZFI = MF.getInfo<SystemZMachineFunctionInfo>();
// Skip the return instruction.
- assert(MBBI->getOpcode() == SystemZ::RET &&
- "Can only insert epilogue into returning blocks");
+ assert(MBBI->isReturn() && "Can only insert epilogue into returning blocks");
uint64_t StackSize = getAllocatedStackSize(MF);
if (ZFI->getLowSavedGPR()) {
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