// MachineFunction implementation
//===----------------------------------------------------------------------===//
-// Out of line virtual method.
+// Out-of-line virtual method.
MachineFunctionInfo::~MachineFunctionInfo() {}
void ilist_traits<MachineBasicBlock>::deleteNode(MachineBasicBlock *MBB) {
}
}
-/// getOrCreateJumpTableInfo - Get the JumpTableInfo for this function, if it
-/// does already exist, allocate one.
+/// Get the JumpTableInfo for this function.
+/// If it does not already exist, allocate one.
MachineJumpTableInfo *MachineFunction::
getOrCreateJumpTableInfo(unsigned EntryKind) {
if (JumpTableInfo) return JumpTableInfo;
return getFunction()->hasFnAttribute("split-stack");
}
-/// RenumberBlocks - This discards all of the MachineBasicBlock numbers and
-/// recomputes them. This guarantees that the MBB numbers are sequential,
-/// dense, and match the ordering of the blocks within the function. If a
-/// specific MachineBasicBlock is specified, only that block and those after
-/// it are renumbered.
+/// This discards all of the MachineBasicBlock numbers and recomputes them.
+/// This guarantees that the MBB numbers are sequential, dense, and match the
+/// ordering of the blocks within the function. If a specific MachineBasicBlock
+/// is specified, only that block and those after it are renumbered.
void MachineFunction::RenumberBlocks(MachineBasicBlock *MBB) {
if (empty()) { MBBNumbering.clear(); return; }
MachineFunction::iterator MBBI, E = end();
MBBNumbering.resize(BlockNo);
}
-/// CreateMachineInstr - Allocate a new MachineInstr. Use this instead
-/// of `new MachineInstr'.
-///
+/// Allocate a new MachineInstr. Use this instead of `new MachineInstr'.
MachineInstr *
MachineFunction::CreateMachineInstr(const MCInstrDesc &MCID,
DebugLoc DL, bool NoImp) {
MachineInstr(*this, MCID, DL, NoImp);
}
-/// CloneMachineInstr - Create a new MachineInstr which is a copy of the
-/// 'Orig' instruction, identical in all ways except the instruction
-/// has no parent, prev, or next.
-///
+/// Create a new MachineInstr which is a copy of the 'Orig' instruction,
+/// identical in all ways except the instruction has no parent, prev, or next.
MachineInstr *
MachineFunction::CloneMachineInstr(const MachineInstr *Orig) {
return new (InstructionRecycler.Allocate<MachineInstr>(Allocator))
MachineInstr(*this, *Orig);
}
-/// DeleteMachineInstr - Delete the given MachineInstr.
+/// Delete the given MachineInstr.
///
/// This function also serves as the MachineInstr destructor - the real
/// ~MachineInstr() destructor must be empty.
InstructionRecycler.Deallocate(Allocator, MI);
}
-/// CreateMachineBasicBlock - Allocate a new MachineBasicBlock. Use this
-/// instead of `new MachineBasicBlock'.
-///
+/// Allocate a new MachineBasicBlock. Use this instead of
+/// `new MachineBasicBlock'.
MachineBasicBlock *
MachineFunction::CreateMachineBasicBlock(const BasicBlock *bb) {
return new (BasicBlockRecycler.Allocate<MachineBasicBlock>(Allocator))
MachineBasicBlock(*this, bb);
}
-/// DeleteMachineBasicBlock - Delete the given MachineBasicBlock.
-///
+/// Delete the given MachineBasicBlock.
void
MachineFunction::DeleteMachineBasicBlock(MachineBasicBlock *MBB) {
assert(MBB->getParent() == this && "MBB parent mismatch!");
#endif // NDEBUG
}
-/// addLiveIn - Add the specified physical register as a live-in value and
+/// Add the specified physical register as a live-in value and
/// create a corresponding virtual register for it.
unsigned MachineFunction::addLiveIn(unsigned PReg,
const TargetRegisterClass *RC) {
return VReg;
}
-/// getJTISymbol - Return the MCSymbol for the specified non-empty jump table.
+/// Return the MCSymbol for the specified non-empty jump table.
/// If isLinkerPrivate is specified, an 'l' label is returned, otherwise a
/// normal 'L' label is returned.
MCSymbol *MachineFunction::getJTISymbol(unsigned JTI, MCContext &Ctx,
return Ctx.getOrCreateSymbol(Name);
}
-/// getPICBaseSymbol - Return a function-local symbol to represent the PIC
-/// base.
+/// Return a function-local symbol to represent the PIC base.
MCSymbol *MachineFunction::getPICBaseSymbol() const {
const DataLayout *DL = getTarget().getDataLayout();
return Ctx.getOrCreateSymbol(Twine(DL->getPrivateGlobalPrefix())+
// MachineFrameInfo implementation
//===----------------------------------------------------------------------===//
-/// ensureMaxAlignment - Make sure the function is at least Align bytes
-/// aligned.
+/// Make sure the function is at least Align bytes aligned.
void MachineFrameInfo::ensureMaxAlignment(unsigned Align) {
if (!StackRealignable || !RealignOption)
assert(Align <= StackAlignment &&
if (MaxAlignment < Align) MaxAlignment = Align;
}
-/// clampStackAlignment - Clamp the alignment if requested and emit a warning.
+/// Clamp the alignment if requested and emit a warning.
static inline unsigned clampStackAlignment(bool ShouldClamp, unsigned Align,
unsigned StackAlign) {
if (!ShouldClamp || Align <= StackAlign)
return StackAlign;
}
-/// CreateStackObject - Create a new statically sized stack object, returning
-/// a nonnegative identifier to represent it.
-///
+/// Create a new statically sized stack object, returning a nonnegative
+/// identifier to represent it.
int MachineFrameInfo::CreateStackObject(uint64_t Size, unsigned Alignment,
bool isSS, const AllocaInst *Alloca) {
assert(Size != 0 && "Cannot allocate zero size stack objects!");
return Index;
}
-/// CreateSpillStackObject - Create a new statically sized stack object that
-/// represents a spill slot, returning a nonnegative identifier to represent
-/// it.
-///
+/// Create a new statically sized stack object that represents a spill slot,
+/// returning a nonnegative identifier to represent it.
int MachineFrameInfo::CreateSpillStackObject(uint64_t Size,
unsigned Alignment) {
Alignment = clampStackAlignment(!StackRealignable || !RealignOption,
return Index;
}
-/// CreateVariableSizedObject - Notify the MachineFrameInfo object that a
-/// variable sized object has been created. This must be created whenever a
-/// variable sized object is created, whether or not the index returned is
-/// actually used.
-///
+/// Notify the MachineFrameInfo object that a variable sized object has been
+/// created. This must be created whenever a variable sized object is created,
+/// whether or not the index returned is actually used.
int MachineFrameInfo::CreateVariableSizedObject(unsigned Alignment,
const AllocaInst *Alloca) {
HasVarSizedObjects = true;
return (int)Objects.size()-NumFixedObjects-1;
}
-/// CreateFixedObject - Create a new object at a fixed location on the stack.
+/// Create a new object at a fixed location on the stack.
/// All fixed objects should be created before other objects are created for
/// efficiency. By default, fixed objects are immutable. This returns an
/// index with a negative value.
-///
int MachineFrameInfo::CreateFixedObject(uint64_t Size, int64_t SPOffset,
bool Immutable, bool isAliased) {
assert(Size != 0 && "Cannot allocate zero size fixed stack objects!");
return -++NumFixedObjects;
}
-/// CreateFixedSpillStackObject - Create a spill slot at a fixed location
-/// on the stack. Returns an index with a negative value.
+/// Create a spill slot at a fixed location on the stack.
+/// Returns an index with a negative value.
int MachineFrameInfo::CreateFixedSpillStackObject(uint64_t Size,
int64_t SPOffset) {
unsigned Align = MinAlign(SPOffset, StackAlignment);
// MachineJumpTableInfo implementation
//===----------------------------------------------------------------------===//
-/// getEntrySize - Return the size of each entry in the jump table.
+/// Return the size of each entry in the jump table.
unsigned MachineJumpTableInfo::getEntrySize(const DataLayout &TD) const {
// The size of a jump table entry is 4 bytes unless the entry is just the
// address of a block, in which case it is the pointer size.
llvm_unreachable("Unknown jump table encoding!");
}
-/// getEntryAlignment - Return the alignment of each entry in the jump table.
+/// Return the alignment of each entry in the jump table.
unsigned MachineJumpTableInfo::getEntryAlignment(const DataLayout &TD) const {
// The alignment of a jump table entry is the alignment of int32 unless the
// entry is just the address of a block, in which case it is the pointer
llvm_unreachable("Unknown jump table encoding!");
}
-/// createJumpTableIndex - Create a new jump table entry in the jump table info.
-///
+/// Create a new jump table entry in the jump table info.
unsigned MachineJumpTableInfo::createJumpTableIndex(
const std::vector<MachineBasicBlock*> &DestBBs) {
assert(!DestBBs.empty() && "Cannot create an empty jump table!");
return JumpTables.size()-1;
}
-/// ReplaceMBBInJumpTables - If Old is the target of any jump tables, update
-/// the jump tables to branch to New instead.
+/// If Old is the target of any jump tables, update the jump tables to branch
+/// to New instead.
bool MachineJumpTableInfo::ReplaceMBBInJumpTables(MachineBasicBlock *Old,
MachineBasicBlock *New) {
assert(Old != New && "Not making a change?");
return MadeChange;
}
-/// ReplaceMBBInJumpTable - If Old is a target of the jump tables, update
-/// the jump table to branch to New instead.
+/// If Old is a target of the jump tables, update the jump table to branch to
+/// New instead.
bool MachineJumpTableInfo::ReplaceMBBInJumpTable(unsigned Idx,
MachineBasicBlock *Old,
MachineBasicBlock *New) {
delete *I;
}
-/// CanShareConstantPoolEntry - Test whether the given two constants
-/// can be allocated the same constant pool entry.
+/// Test whether the given two constants can be allocated the same constant pool
+/// entry.
static bool CanShareConstantPoolEntry(const Constant *A, const Constant *B,
const DataLayout *TD) {
// Handle the trivial case quickly.
return A == B;
}
-/// getConstantPoolIndex - Create a new entry in the constant pool or return
-/// an existing one. User must specify the log2 of the minimum required
-/// alignment for the object.
-///
+/// Create a new entry in the constant pool or return an existing one.
+/// User must specify the log2 of the minimum required alignment for the object.
unsigned MachineConstantPool::getConstantPoolIndex(const Constant *C,
unsigned Alignment) {
assert(Alignment && "Alignment must be specified!");
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