#include "llvm/CodeGen/MachineModuleInfo.h"
#include "XCoreGenInstrInfo.inc"
#include "llvm/Support/Debug.h"
+#include "llvm/Support/ErrorHandling.h"
namespace llvm {
namespace XCore {
using namespace llvm;
-XCoreInstrInfo::XCoreInstrInfo(void)
+XCoreInstrInfo::XCoreInstrInfo()
: TargetInstrInfoImpl(XCoreInsts, array_lengthof(XCoreInsts)),
RI(*this) {
}
return 0;
}
-/// isInvariantLoad - Return true if the specified instruction (which is marked
-/// mayLoad) is loading from a location whose value is invariant across the
-/// function. For example, loading a value from the constant pool or from
-/// from the argument area of a function if it does not change. This should
-/// only return true of *all* loads the instruction does are invariant (if it
-/// does multiple loads).
-bool
-XCoreInstrInfo::isInvariantLoad(const MachineInstr *MI) const {
- // Loads from constants pools and loads from invariant argument slots are
- // invariant
- int Opcode = MI->getOpcode();
- if (Opcode == XCore::LDWCP_ru6 || Opcode == XCore::LDWCP_lru6) {
- return MI->getOperand(1).isCPI();
- }
- int FrameIndex;
- if (isLoadFromStackSlot(MI, FrameIndex)) {
- const MachineFrameInfo &MFI =
- *MI->getParent()->getParent()->getFrameInfo();
- return MFI.isFixedObjectIndex(FrameIndex) &&
- MFI.isImmutableObjectIndex(FrameIndex);
- }
- return false;
-}
-
//===----------------------------------------------------------------------===//
// Branch Analysis
//===----------------------------------------------------------------------===//
static inline unsigned GetCondBranchFromCond(XCore::CondCode CC)
{
switch (CC) {
- default: assert(0 && "Illegal condition code!");
+ default: llvm_unreachable("Illegal condition code!");
case XCore::COND_TRUE : return XCore::BRFT_lru6;
case XCore::COND_FALSE : return XCore::BRFF_lru6;
}
static inline XCore::CondCode GetOppositeBranchCondition(XCore::CondCode CC)
{
switch (CC) {
- default: assert(0 && "Illegal condition code!");
+ default: llvm_unreachable("Illegal condition code!");
case XCore::COND_TRUE : return XCore::COND_FALSE;
case XCore::COND_FALSE : return XCore::COND_TRUE;
}
XCoreInstrInfo::InsertBranch(MachineBasicBlock &MBB,MachineBasicBlock *TBB,
MachineBasicBlock *FBB,
const SmallVectorImpl<MachineOperand> &Cond)const{
+ // FIXME there should probably be a DebugLoc argument here
+ DebugLoc dl = DebugLoc::getUnknownLoc();
// Shouldn't be a fall through.
assert(TBB && "InsertBranch must not be told to insert a fallthrough");
assert((Cond.size() == 2 || Cond.size() == 0) &&
if (FBB == 0) { // One way branch.
if (Cond.empty()) {
// Unconditional branch
- BuildMI(&MBB, get(XCore::BRFU_lu6)).addMBB(TBB);
+ BuildMI(&MBB, dl, get(XCore::BRFU_lu6)).addMBB(TBB);
} else {
// Conditional branch.
unsigned Opc = GetCondBranchFromCond((XCore::CondCode)Cond[0].getImm());
- BuildMI(&MBB, get(Opc)).addReg(Cond[1].getReg())
+ BuildMI(&MBB, dl, get(Opc)).addReg(Cond[1].getReg())
.addMBB(TBB);
}
return 1;
// Two-way Conditional branch.
assert(Cond.size() == 2 && "Unexpected number of components!");
unsigned Opc = GetCondBranchFromCond((XCore::CondCode)Cond[0].getImm());
- BuildMI(&MBB, get(Opc)).addReg(Cond[1].getReg())
+ BuildMI(&MBB, dl, get(Opc)).addReg(Cond[1].getReg())
.addMBB(TBB);
- BuildMI(&MBB, get(XCore::BRFU_lu6)).addMBB(FBB);
+ BuildMI(&MBB, dl, get(XCore::BRFU_lu6)).addMBB(FBB);
return 2;
}
}
bool XCoreInstrInfo::copyRegToReg(MachineBasicBlock &MBB,
- MachineBasicBlock::iterator I,
- unsigned DestReg, unsigned SrcReg,
- const TargetRegisterClass *DestRC,
- const TargetRegisterClass *SrcRC) const {
+ MachineBasicBlock::iterator I,
+ unsigned DestReg, unsigned SrcReg,
+ const TargetRegisterClass *DestRC,
+ const TargetRegisterClass *SrcRC) const {
+ DebugLoc DL = DebugLoc::getUnknownLoc();
+ if (I != MBB.end()) DL = I->getDebugLoc();
+
if (DestRC == SrcRC) {
if (DestRC == XCore::GRRegsRegisterClass) {
- BuildMI(MBB, I, get(XCore::ADD_2rus), DestReg).addReg(SrcReg).addImm(0);
+ BuildMI(MBB, I, DL, get(XCore::ADD_2rus), DestReg)
+ .addReg(SrcReg)
+ .addImm(0);
return true;
} else {
return false;
if (SrcRC == XCore::RRegsRegisterClass && SrcReg == XCore::SP &&
DestRC == XCore::GRRegsRegisterClass) {
- BuildMI(MBB, I, get(XCore::LDAWSP_ru6), DestReg).addImm(0);
+ BuildMI(MBB, I, DL, get(XCore::LDAWSP_ru6), DestReg)
+ .addImm(0);
return true;
}
if (DestRC == XCore::RRegsRegisterClass && DestReg == XCore::SP &&
SrcRC == XCore::GRRegsRegisterClass) {
- BuildMI(MBB, I, get(XCore::SETSP_1r)).addReg(SrcReg);
+ BuildMI(MBB, I, DL, get(XCore::SETSP_1r))
+ .addReg(SrcReg);
return true;
}
return false;
}
void XCoreInstrInfo::storeRegToStackSlot(MachineBasicBlock &MBB,
- MachineBasicBlock::iterator I,
- unsigned SrcReg, bool isKill, int FrameIndex,
- const TargetRegisterClass *RC) const
-{
- BuildMI(MBB, I, get(XCore::STWFI)).addReg(SrcReg, false, false, isKill)
- .addFrameIndex(FrameIndex).addImm(0);
-}
-
-void XCoreInstrInfo::storeRegToAddr(MachineFunction &MF, unsigned SrcReg,
- bool isKill, SmallVectorImpl<MachineOperand> &Addr,
- const TargetRegisterClass *RC,
- SmallVectorImpl<MachineInstr*> &NewMIs) const
+ MachineBasicBlock::iterator I,
+ unsigned SrcReg, bool isKill,
+ int FrameIndex,
+ const TargetRegisterClass *RC) const
{
- assert(0 && "unimplemented\n");
+ DebugLoc DL = DebugLoc::getUnknownLoc();
+ if (I != MBB.end()) DL = I->getDebugLoc();
+ BuildMI(MBB, I, DL, get(XCore::STWFI))
+ .addReg(SrcReg, getKillRegState(isKill))
+ .addFrameIndex(FrameIndex)
+ .addImm(0);
}
void XCoreInstrInfo::loadRegFromStackSlot(MachineBasicBlock &MBB,
- MachineBasicBlock::iterator I,
- unsigned DestReg, int FrameIndex,
- const TargetRegisterClass *RC) const
-{
- BuildMI(MBB, I, get(XCore::LDWFI), DestReg).addFrameIndex(FrameIndex)
- .addImm(0);
-}
-
-void XCoreInstrInfo::loadRegFromAddr(MachineFunction &MF, unsigned DestReg,
- SmallVectorImpl<MachineOperand> &Addr,
- const TargetRegisterClass *RC,
- SmallVectorImpl<MachineInstr*> &NewMIs) const
+ MachineBasicBlock::iterator I,
+ unsigned DestReg, int FrameIndex,
+ const TargetRegisterClass *RC) const
{
- assert(0 && "unimplemented\n");
+ DebugLoc DL = DebugLoc::getUnknownLoc();
+ if (I != MBB.end()) DL = I->getDebugLoc();
+ BuildMI(MBB, I, DL, get(XCore::LDWFI), DestReg)
+ .addFrameIndex(FrameIndex)
+ .addImm(0);
}
bool XCoreInstrInfo::spillCalleeSavedRegisters(MachineBasicBlock &MBB,
- MachineBasicBlock::iterator MI,
- const std::vector<CalleeSavedInfo> &CSI) const
+ MachineBasicBlock::iterator MI,
+ const std::vector<CalleeSavedInfo> &CSI) const
{
if (CSI.empty()) {
return true;
XCoreFunctionInfo *XFI = MF->getInfo<XCoreFunctionInfo>();
bool emitFrameMoves = XCoreRegisterInfo::needsFrameMoves(*MF);
+
+ DebugLoc DL = DebugLoc::getUnknownLoc();
+ if (MI != MBB.end()) DL = MI->getDebugLoc();
for (std::vector<CalleeSavedInfo>::const_iterator it = CSI.begin();
it != CSI.end(); ++it) {
MBB.addLiveIn(it->getReg());
storeRegToStackSlot(MBB, MI, it->getReg(), true,
- it->getFrameIdx(), it->getRegClass());
+ it->getFrameIdx(), it->getRegClass());
if (emitFrameMoves) {
unsigned SaveLabelId = MMI->NextLabelID();
- BuildMI(MBB, MI, get(XCore::DBG_LABEL)).addImm(SaveLabelId);
+ BuildMI(MBB, MI, DL, get(XCore::DBG_LABEL)).addImm(SaveLabelId);
XFI->getSpillLabels().push_back(
std::pair<unsigned, CalleeSavedInfo>(SaveLabelId, *it));
}
return true;
}
-/// BlockHasNoFallThrough - Analyse if MachineBasicBlock does not
-/// fall-through into its successor block.
-bool XCoreInstrInfo::
-BlockHasNoFallThrough(const MachineBasicBlock &MBB) const
-{
- if (MBB.empty()) return false;
-
- switch (MBB.back().getOpcode()) {
- case XCore::RETSP_u6: // Return.
- case XCore::RETSP_lu6:
- case XCore::BAU_1r: // Indirect branch.
- case XCore::BRFU_u6: // Uncond branch.
- case XCore::BRFU_lu6:
- case XCore::BRBU_u6:
- case XCore::BRBU_lu6:
- return true;
- default: return false;
- }
-}
-
/// ReverseBranchCondition - Return the inverse opcode of the
/// specified Branch instruction.
bool XCoreInstrInfo::
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