#include "SystemZInstrInfo.h"
#include "SystemZMachineFunctionInfo.h"
#include "SystemZTargetMachine.h"
-#include "SystemZGenInstrInfo.inc"
#include "llvm/Function.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/CodeGen/PseudoSourceValue.h"
#include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/TargetRegistry.h"
+
+#define GET_INSTRINFO_CTOR
+#include "SystemZGenInstrInfo.inc"
+
using namespace llvm;
SystemZInstrInfo::SystemZInstrInfo(SystemZTargetMachine &tm)
- : TargetInstrInfoImpl(SystemZInsts, array_lengthof(SystemZInsts)),
+ : SystemZGenInstrInfo(SystemZ::ADJCALLSTACKUP, SystemZ::ADJCALLSTACKDOWN),
RI(tm, *this), TM(tm) {
- // Fill the spill offsets map
- static const unsigned SpillOffsTab[][2] = {
- { 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 }
- };
-
- RegSpillOffsets.grow(SystemZ::NUM_TARGET_REGS);
-
- for (unsigned i = 0, e = array_lengthof(SpillOffsTab); i != e; ++i)
- RegSpillOffsets[SpillOffsTab[i][0]] = SpillOffsTab[i][1];
}
/// isGVStub - Return true if the GV requires an extra load to get the
return 0;
}
-bool
-SystemZInstrInfo::spillCalleeSavedRegisters(MachineBasicBlock &MBB,
- MachineBasicBlock::iterator MI,
- const std::vector<CalleeSavedInfo> &CSI,
- const TargetRegisterInfo *TRI) const {
- if (CSI.empty())
- return false;
-
- DebugLoc DL;
- if (MI != MBB.end()) DL = MI->getDebugLoc();
-
- MachineFunction &MF = *MBB.getParent();
- SystemZMachineFunctionInfo *MFI = MF.getInfo<SystemZMachineFunctionInfo>();
- unsigned CalleeFrameSize = 0;
-
- // Scan the callee-saved and find the bounds of register spill area.
- unsigned LowReg = 0, HighReg = 0, StartOffset = -1U, EndOffset = 0;
- for (unsigned i = 0, e = CSI.size(); i != e; ++i) {
- unsigned Reg = CSI[i].getReg();
- if (!SystemZ::FP64RegClass.contains(Reg)) {
- unsigned Offset = RegSpillOffsets[Reg];
- CalleeFrameSize += 8;
- if (StartOffset > Offset) {
- LowReg = Reg; StartOffset = Offset;
- }
- if (EndOffset < Offset) {
- HighReg = Reg; EndOffset = RegSpillOffsets[Reg];
- }
- }
- }
-
- // Save information for epilogue inserter.
- MFI->setCalleeSavedFrameSize(CalleeFrameSize);
- MFI->setLowReg(LowReg); MFI->setHighReg(HighReg);
-
- // Save GPRs
- if (StartOffset) {
- // Build a store instruction. Use STORE MULTIPLE instruction if there are many
- // registers to store, otherwise - just STORE.
- MachineInstrBuilder MIB =
- BuildMI(MBB, MI, DL, get((LowReg == HighReg ?
- SystemZ::MOV64mr : SystemZ::MOV64mrm)));
-
- // Add store operands.
- MIB.addReg(SystemZ::R15D).addImm(StartOffset);
- if (LowReg == HighReg)
- MIB.addReg(0);
- MIB.addReg(LowReg, RegState::Kill);
- if (LowReg != HighReg)
- MIB.addReg(HighReg, RegState::Kill);
-
- // Do a second scan adding regs as being killed by instruction
- for (unsigned i = 0, e = CSI.size(); i != e; ++i) {
- unsigned Reg = CSI[i].getReg();
- // Add the callee-saved register as live-in. It's killed at the spill.
- MBB.addLiveIn(Reg);
- if (Reg != LowReg && Reg != HighReg)
- MIB.addReg(Reg, RegState::ImplicitKill);
- }
- }
-
- // Save FPRs
- for (unsigned i = 0, e = CSI.size(); i != e; ++i) {
- unsigned Reg = CSI[i].getReg();
- if (SystemZ::FP64RegClass.contains(Reg)) {
- MBB.addLiveIn(Reg);
- storeRegToStackSlot(MBB, MI, Reg, true, CSI[i].getFrameIdx(),
- &SystemZ::FP64RegClass, &RI);
- }
- }
-
- return true;
-}
-
-bool
-SystemZInstrInfo::restoreCalleeSavedRegisters(MachineBasicBlock &MBB,
- MachineBasicBlock::iterator MI,
- const std::vector<CalleeSavedInfo> &CSI,
- const TargetRegisterInfo *TRI) const {
- if (CSI.empty())
- return false;
-
- DebugLoc DL;
- if (MI != MBB.end()) DL = MI->getDebugLoc();
-
- MachineFunction &MF = *MBB.getParent();
- const TargetFrameInfo *TFI = MF.getTarget().getFrameInfo();
- SystemZMachineFunctionInfo *MFI = MF.getInfo<SystemZMachineFunctionInfo>();
-
- // Restore FP registers
- for (unsigned i = 0, e = CSI.size(); i != e; ++i) {
- unsigned Reg = CSI[i].getReg();
- if (SystemZ::FP64RegClass.contains(Reg))
- loadRegFromStackSlot(MBB, MI, Reg, CSI[i].getFrameIdx(),
- &SystemZ::FP64RegClass, &RI);
- }
-
- // Restore GP registers
- unsigned LowReg = MFI->getLowReg(), HighReg = MFI->getHighReg();
- unsigned StartOffset = RegSpillOffsets[LowReg];
-
- if (StartOffset) {
- // Build a load instruction. Use LOAD MULTIPLE instruction if there are many
- // registers to load, otherwise - just LOAD.
- MachineInstrBuilder MIB =
- BuildMI(MBB, MI, DL, get((LowReg == HighReg ?
- SystemZ::MOV64rm : SystemZ::MOV64rmm)));
- // Add store operands.
- MIB.addReg(LowReg, RegState::Define);
- if (LowReg != HighReg)
- MIB.addReg(HighReg, RegState::Define);
-
- MIB.addReg(TFI->hasFP(MF) ? SystemZ::R11D : SystemZ::R15D);
- MIB.addImm(StartOffset);
- if (LowReg == HighReg)
- MIB.addReg(0);
-
- // Do a second scan adding regs as being defined by instruction
- for (unsigned i = 0, e = CSI.size(); i != e; ++i) {
- unsigned Reg = CSI[i].getReg();
- if (Reg != LowReg && Reg != HighReg)
- MIB.addReg(Reg, RegState::ImplicitDefine);
- }
- }
-
- return true;
-}
-
bool SystemZInstrInfo::
ReverseBranchCondition(SmallVectorImpl<MachineOperand> &Cond) const {
assert(Cond.size() == 1 && "Invalid Xbranch condition!");
}
bool SystemZInstrInfo::isUnpredicatedTerminator(const MachineInstr *MI) const {
- const TargetInstrDesc &TID = MI->getDesc();
- if (!TID.isTerminator()) return false;
+ const MCInstrDesc &MCID = MI->getDesc();
+ if (!MCID.isTerminator()) return false;
// Conditional branch is a special case.
- if (TID.isBranch() && !TID.isBarrier())
+ if (MCID.isBranch() && !MCID.isBarrier())
return true;
- if (!TID.isPredicable())
+ if (!MCID.isPredicable())
return true;
return !isPredicated(MI);
}
return Count;
}
-const TargetInstrDesc&
+const MCInstrDesc&
SystemZInstrInfo::getBrCond(SystemZCC::CondCodes CC) const {
switch (CC) {
default:
}
}
-const TargetInstrDesc&
+const MCInstrDesc&
SystemZInstrInfo::getLongDispOpc(unsigned Opc) const {
switch (Opc) {
default:
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