#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/Analysis/ConstantFolding.h"
+#include "llvm/Analysis/EHPersonalities.h"
#include "llvm/CodeGen/MachineConstantPool.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
+#include "llvm/CodeGen/MachineFunctionInitializer.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineInstr.h"
#include "llvm/CodeGen/MachineJumpTableInfo.h"
#include "llvm/CodeGen/MachineModuleInfo.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/CodeGen/Passes.h"
-#include "llvm/DebugInfo.h"
+#include "llvm/CodeGen/PseudoSourceValue.h"
+#include "llvm/CodeGen/WinEHFuncInfo.h"
#include "llvm/IR/DataLayout.h"
+#include "llvm/IR/DebugInfo.h"
#include "llvm/IR/Function.h"
+#include "llvm/IR/Module.h"
+#include "llvm/IR/ModuleSlotTracker.h"
#include "llvm/MC/MCAsmInfo.h"
#include "llvm/MC/MCContext.h"
#include "llvm/Support/Debug.h"
#include "llvm/Target/TargetFrameLowering.h"
#include "llvm/Target/TargetLowering.h"
#include "llvm/Target/TargetMachine.h"
+#include "llvm/Target/TargetSubtargetInfo.h"
using namespace llvm;
+#define DEBUG_TYPE "codegen"
+
+static cl::opt<unsigned>
+ AlignAllFunctions("align-all-functions",
+ cl::desc("Force the alignment of all functions."),
+ cl::init(0), cl::Hidden);
+
+void MachineFunctionInitializer::anchor() {}
+
//===----------------------------------------------------------------------===//
// MachineFunction implementation
//===----------------------------------------------------------------------===//
-// Out of line virtual method.
+// Out-of-line virtual method.
MachineFunctionInfo::~MachineFunctionInfo() {}
void ilist_traits<MachineBasicBlock>::deleteNode(MachineBasicBlock *MBB) {
}
MachineFunction::MachineFunction(const Function *F, const TargetMachine &TM,
- unsigned FunctionNum, MachineModuleInfo &mmi,
- GCModuleInfo* gmi)
- : Fn(F), Target(TM), Ctx(mmi.getContext()), MMI(mmi), GMI(gmi) {
- if (TM.getRegisterInfo())
- RegInfo = new (Allocator) MachineRegisterInfo(TM);
+ unsigned FunctionNum, MachineModuleInfo &mmi)
+ : Fn(F), Target(TM), STI(TM.getSubtargetImpl(*F)), Ctx(mmi.getContext()),
+ MMI(mmi) {
+ if (STI->getRegisterInfo())
+ RegInfo = new (Allocator) MachineRegisterInfo(this);
else
- RegInfo = 0;
+ RegInfo = nullptr;
- MFInfo = 0;
- FrameInfo =
- new (Allocator) MachineFrameInfo(TM,!F->hasFnAttribute("no-realign-stack"));
+ MFInfo = nullptr;
+ FrameInfo = new (Allocator)
+ MachineFrameInfo(STI->getFrameLowering()->getStackAlignment(),
+ STI->getFrameLowering()->isStackRealignable(),
+ !F->hasFnAttribute("no-realign-stack"));
- if (Fn->getAttributes().hasAttribute(AttributeSet::FunctionIndex,
- Attribute::StackAlignment))
- FrameInfo->ensureMaxAlignment(Fn->getAttributes().
- getStackAlignment(AttributeSet::FunctionIndex));
+ if (Fn->hasFnAttribute(Attribute::StackAlignment))
+ FrameInfo->ensureMaxAlignment(Fn->getFnStackAlignment());
- ConstantPool = new (Allocator) MachineConstantPool(TM);
- Alignment = TM.getTargetLowering()->getMinFunctionAlignment();
+ ConstantPool = new (Allocator) MachineConstantPool(getDataLayout());
+ Alignment = STI->getTargetLowering()->getMinFunctionAlignment();
// FIXME: Shouldn't use pref alignment if explicit alignment is set on Fn.
- if (!Fn->getAttributes().hasAttribute(AttributeSet::FunctionIndex,
- Attribute::OptimizeForSize))
+ // FIXME: Use Function::optForSize().
+ if (!Fn->hasFnAttribute(Attribute::OptimizeForSize))
Alignment = std::max(Alignment,
- TM.getTargetLowering()->getPrefFunctionAlignment());
+ STI->getTargetLowering()->getPrefFunctionAlignment());
+
+ if (AlignAllFunctions)
+ Alignment = AlignAllFunctions;
FunctionNumber = FunctionNum;
- JumpTableInfo = 0;
+ JumpTableInfo = nullptr;
+
+ if (isFuncletEHPersonality(classifyEHPersonality(
+ F->hasPersonalityFn() ? F->getPersonalityFn() : nullptr))) {
+ WinEHInfo = new (Allocator) WinEHFuncInfo();
+ }
+
+ assert(TM.isCompatibleDataLayout(getDataLayout()) &&
+ "Can't create a MachineFunction using a Module with a "
+ "Target-incompatible DataLayout attached\n");
+
+ PSVManager = llvm::make_unique<PseudoSourceValueManager>();
}
MachineFunction::~MachineFunction() {
JumpTableInfo->~MachineJumpTableInfo();
Allocator.Deallocate(JumpTableInfo);
}
+
+ if (WinEHInfo) {
+ WinEHInfo->~WinEHFuncInfo();
+ Allocator.Deallocate(WinEHInfo);
+ }
}
-/// getOrCreateJumpTableInfo - Get the JumpTableInfo for this function, if it
-/// does already exist, allocate one.
+const DataLayout &MachineFunction::getDataLayout() const {
+ return Fn->getParent()->getDataLayout();
+}
+
+/// Get the JumpTableInfo for this function.
+/// If it does not already exist, allocate one.
MachineJumpTableInfo *MachineFunction::
getOrCreateJumpTableInfo(unsigned EntryKind) {
if (JumpTableInfo) return JumpTableInfo;
return JumpTableInfo;
}
-/// 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.
+/// Should we be emitting segmented stack stuff for the function
+bool MachineFunction::shouldSplitStack() const {
+ return getFunction()->hasFnAttribute("split-stack");
+}
+
+/// 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();
- if (MBB == 0)
+ if (MBB == nullptr)
MBBI = begin();
else
- MBBI = MBB;
+ MBBI = MBB->getIterator();
// Figure out the block number this should have.
unsigned BlockNo = 0;
if (MBBI->getNumber() != -1) {
assert(MBBNumbering[MBBI->getNumber()] == &*MBBI &&
"MBB number mismatch!");
- MBBNumbering[MBBI->getNumber()] = 0;
+ MBBNumbering[MBBI->getNumber()] = nullptr;
}
// If BlockNo is already taken, set that block's number to -1.
if (MBBNumbering[BlockNo])
MBBNumbering[BlockNo]->setNumber(-1);
- MBBNumbering[BlockNo] = MBBI;
+ MBBNumbering[BlockNo] = &*MBBI;
MBBI->setNumber(BlockNo);
}
}
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!");
MachineMemOperand *
MachineFunction::getMachineMemOperand(MachinePointerInfo PtrInfo, unsigned f,
uint64_t s, unsigned base_alignment,
- const MDNode *TBAAInfo,
+ const AAMDNodes &AAInfo,
const MDNode *Ranges) {
return new (Allocator) MachineMemOperand(PtrInfo, f, s, base_alignment,
- TBAAInfo, Ranges);
+ AAInfo, Ranges);
}
MachineMemOperand *
MachineFunction::getMachineMemOperand(const MachineMemOperand *MMO,
int64_t Offset, uint64_t Size) {
+ if (MMO->getValue())
+ return new (Allocator)
+ MachineMemOperand(MachinePointerInfo(MMO->getValue(),
+ MMO->getOffset()+Offset),
+ MMO->getFlags(), Size,
+ MMO->getBaseAlignment());
return new (Allocator)
- MachineMemOperand(MachinePointerInfo(MMO->getValue(),
+ MachineMemOperand(MachinePointerInfo(MMO->getPseudoValue(),
MMO->getOffset()+Offset),
MMO->getFlags(), Size,
- MMO->getBaseAlignment(), 0);
+ MMO->getBaseAlignment());
}
MachineInstr::mmo_iterator
getMachineMemOperand((*I)->getPointerInfo(),
(*I)->getFlags() & ~MachineMemOperand::MOStore,
(*I)->getSize(), (*I)->getBaseAlignment(),
- (*I)->getTBAAInfo());
+ (*I)->getAAInfo());
Result[Index] = JustLoad;
}
++Index;
getMachineMemOperand((*I)->getPointerInfo(),
(*I)->getFlags() & ~MachineMemOperand::MOLoad,
(*I)->getSize(), (*I)->getBaseAlignment(),
- (*I)->getTBAAInfo());
+ (*I)->getAAInfo());
Result[Index] = JustStore;
}
++Index;
return std::make_pair(Result, Result + Num);
}
+const char *MachineFunction::createExternalSymbolName(StringRef Name) {
+ char *Dest = Allocator.Allocate<char>(Name.size() + 1);
+ std::copy(Name.begin(), Name.end(), Dest);
+ Dest[Name.size()] = 0;
+ return Dest;
+}
+
#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
void MachineFunction::dump() const {
print(dbgs());
// Print Constant Pool
ConstantPool->print(OS);
- const TargetRegisterInfo *TRI = getTarget().getRegisterInfo();
+ const TargetRegisterInfo *TRI = getSubtarget().getRegisterInfo();
if (RegInfo && !RegInfo->livein_empty()) {
OS << "Function Live Ins: ";
OS << '\n';
}
- for (const_iterator BB = begin(), E = end(); BB != E; ++BB) {
+ ModuleSlotTracker MST(getFunction()->getParent());
+ MST.incorporateFunction(*getFunction());
+ for (const auto &BB : *this) {
OS << '\n';
- BB->print(OS, Indexes);
+ BB.print(OS, MST, Indexes);
}
OS << "\n# End machine code for function " << getName() << ".\n\n";
DOTGraphTraits (bool isSimple=false) : DefaultDOTGraphTraits(isSimple) {}
static std::string getGraphName(const MachineFunction *F) {
- return "CFG for '" + F->getName().str() + "' function";
+ return ("CFG for '" + F->getName() + "' function").str();
}
std::string getNodeLabel(const MachineBasicBlock *Node,
#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,
+MCSymbol *MachineFunction::getJTISymbol(unsigned JTI, MCContext &Ctx,
bool isLinkerPrivate) const {
- const DataLayout *DL = getTarget().getDataLayout();
+ const DataLayout &DL = getDataLayout();
assert(JumpTableInfo && "No jump tables");
assert(JTI < JumpTableInfo->getJumpTables().size() && "Invalid JTI!");
- const char *Prefix = isLinkerPrivate ? DL->getLinkerPrivateGlobalPrefix() :
- DL->getPrivateGlobalPrefix();
+ const char *Prefix = isLinkerPrivate ? DL.getLinkerPrivateGlobalPrefix()
+ : DL.getPrivateGlobalPrefix();
SmallString<60> Name;
raw_svector_ostream(Name)
<< Prefix << "JTI" << getFunctionNumber() << '_' << JTI;
- return Ctx.GetOrCreateSymbol(Name.str());
+ 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())+
- Twine(getFunctionNumber())+"$pb");
+ const DataLayout &DL = getDataLayout();
+ return Ctx.getOrCreateSymbol(Twine(DL.getPrivateGlobalPrefix()) +
+ Twine(getFunctionNumber()) + "$pb");
}
//===----------------------------------------------------------------------===//
// MachineFrameInfo implementation
//===----------------------------------------------------------------------===//
-const TargetFrameLowering *MachineFrameInfo::getFrameLowering() const {
- return TM.getFrameLowering();
-}
-
-/// 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 (!getFrameLowering()->isStackRealignable() || !RealignOption)
- assert(Align <= getFrameLowering()->getStackAlignment() &&
+ if (!StackRealignable || !RealignOption)
+ assert(Align <= StackAlignment &&
"For targets without stack realignment, Align is out of limit!");
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!");
- Alignment =
- clampStackAlignment(!getFrameLowering()->isStackRealignable() ||
- !RealignOption,
- Alignment, getFrameLowering()->getStackAlignment());
- Objects.push_back(StackObject(Size, Alignment, 0, false, isSS, Alloca));
+ Alignment = clampStackAlignment(!StackRealignable || !RealignOption,
+ Alignment, StackAlignment);
+ Objects.push_back(StackObject(Size, Alignment, 0, false, isSS, Alloca,
+ !isSS));
int Index = (int)Objects.size() - NumFixedObjects - 1;
assert(Index >= 0 && "Bad frame index!");
ensureMaxAlignment(Alignment);
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(!getFrameLowering()->isStackRealignable() ||
- !RealignOption,
- Alignment, getFrameLowering()->getStackAlignment());
+ Alignment = clampStackAlignment(!StackRealignable || !RealignOption,
+ Alignment, StackAlignment);
CreateStackObject(Size, Alignment, true);
int Index = (int)Objects.size() - NumFixedObjects - 1;
ensureMaxAlignment(Alignment);
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;
- Alignment =
- clampStackAlignment(!getFrameLowering()->isStackRealignable() ||
- !RealignOption,
- Alignment, getFrameLowering()->getStackAlignment());
- Objects.push_back(StackObject(0, Alignment, 0, false, false, Alloca));
+ Alignment = clampStackAlignment(!StackRealignable || !RealignOption,
+ Alignment, StackAlignment);
+ Objects.push_back(StackObject(0, Alignment, 0, false, false, Alloca, true));
ensureMaxAlignment(Alignment);
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 Immutable, bool isAliased) {
assert(Size != 0 && "Cannot allocate zero size fixed stack objects!");
// The alignment of the frame index can be determined from its offset from
// the incoming frame position. If the frame object is at offset 32 and
// the stack is guaranteed to be 16-byte aligned, then we know that the
// object is 16-byte aligned.
- unsigned StackAlign = getFrameLowering()->getStackAlignment();
- unsigned Align = MinAlign(SPOffset, StackAlign);
- Align =
- clampStackAlignment(!getFrameLowering()->isStackRealignable() ||
- !RealignOption,
- Align, getFrameLowering()->getStackAlignment());
+ unsigned Align = MinAlign(SPOffset, StackAlignment);
+ Align = clampStackAlignment(!StackRealignable || !RealignOption, Align,
+ StackAlignment);
Objects.insert(Objects.begin(), StackObject(Size, Align, SPOffset, Immutable,
/*isSS*/ false,
- /*Alloca*/ 0));
+ /*Alloca*/ nullptr, isAliased));
return -++NumFixedObjects;
}
+/// 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);
+ Align = clampStackAlignment(!StackRealignable || !RealignOption, Align,
+ StackAlignment);
+ Objects.insert(Objects.begin(), StackObject(Size, Align, SPOffset,
+ /*Immutable*/ true,
+ /*isSS*/ true,
+ /*Alloca*/ nullptr,
+ /*isAliased*/ false));
+ return -++NumFixedObjects;
+}
-BitVector
-MachineFrameInfo::getPristineRegs(const MachineBasicBlock *MBB) const {
- assert(MBB && "MBB must be valid");
- const MachineFunction *MF = MBB->getParent();
- assert(MF && "MBB must be part of a MachineFunction");
- const TargetMachine &TM = MF->getTarget();
- const TargetRegisterInfo *TRI = TM.getRegisterInfo();
+BitVector MachineFrameInfo::getPristineRegs(const MachineFunction &MF) const {
+ const TargetRegisterInfo *TRI = MF.getSubtarget().getRegisterInfo();
BitVector BV(TRI->getNumRegs());
// Before CSI is calculated, no registers are considered pristine. They can be
if (!isCalleeSavedInfoValid())
return BV;
- for (const uint16_t *CSR = TRI->getCalleeSavedRegs(MF); CSR && *CSR; ++CSR)
+ for (const MCPhysReg *CSR = TRI->getCalleeSavedRegs(&MF); CSR && *CSR; ++CSR)
BV.set(*CSR);
- // The entry MBB always has all CSRs pristine.
- if (MBB == &MF->front())
- return BV;
-
- // On other MBBs the saved CSRs are not pristine.
- const std::vector<CalleeSavedInfo> &CSI = getCalleeSavedInfo();
- for (std::vector<CalleeSavedInfo>::const_iterator I = CSI.begin(),
- E = CSI.end(); I != E; ++I)
- BV.reset(I->getReg());
+ // Saved CSRs are not pristine.
+ for (auto &I : getCalleeSavedInfo())
+ for (MCSubRegIterator S(I.getReg(), TRI, true); S.isValid(); ++S)
+ BV.reset(*S);
return BV;
}
unsigned MachineFrameInfo::estimateStackSize(const MachineFunction &MF) const {
- const TargetFrameLowering *TFI = MF.getTarget().getFrameLowering();
- const TargetRegisterInfo *RegInfo = MF.getTarget().getRegisterInfo();
+ const TargetFrameLowering *TFI = MF.getSubtarget().getFrameLowering();
+ const TargetRegisterInfo *RegInfo = MF.getSubtarget().getRegisterInfo();
unsigned MaxAlign = getMaxAlignment();
int Offset = 0;
void MachineFrameInfo::print(const MachineFunction &MF, raw_ostream &OS) const{
if (Objects.empty()) return;
- const TargetFrameLowering *FI = MF.getTarget().getFrameLowering();
+ const TargetFrameLowering *FI = MF.getSubtarget().getFrameLowering();
int ValOffset = (FI ? FI->getOffsetOfLocalArea() : 0);
OS << "Frame Objects:\n";
// 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) {
void MachineConstantPoolValue::anchor() { }
-const DataLayout *MachineConstantPool::getDataLayout() const {
- return TM.getDataLayout();
-}
-
Type *MachineConstantPoolEntry::getType() const {
if (isMachineConstantPoolEntry())
return Val.MachineCPVal->getType();
return Val.ConstVal->getType();
}
-
-unsigned MachineConstantPoolEntry::getRelocationInfo() const {
+bool MachineConstantPoolEntry::needsRelocation() const {
if (isMachineConstantPoolEntry())
- return Val.MachineCPVal->getRelocationInfo();
- return Val.ConstVal->getRelocationInfo();
+ return true;
+ return Val.ConstVal->needsRelocation();
+}
+
+SectionKind
+MachineConstantPoolEntry::getSectionKind(const DataLayout *DL) const {
+ if (needsRelocation())
+ return SectionKind::getReadOnlyWithRel();
+ switch (DL->getTypeAllocSize(getType())) {
+ case 4:
+ return SectionKind::getMergeableConst4();
+ case 8:
+ return SectionKind::getMergeableConst8();
+ case 16:
+ return SectionKind::getMergeableConst16();
+ default:
+ return SectionKind::getReadOnly();
+ }
}
MachineConstantPool::~MachineConstantPool() {
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) {
+ const DataLayout &DL) {
// Handle the trivial case quickly.
if (A == B) return true;
if (isa<StructType>(A->getType()) || isa<ArrayType>(A->getType()) ||
isa<StructType>(B->getType()) || isa<ArrayType>(B->getType()))
return false;
-
+
// For now, only support constants with the same size.
- uint64_t StoreSize = TD->getTypeStoreSize(A->getType());
- if (StoreSize != TD->getTypeStoreSize(B->getType()) ||
- StoreSize > 128)
+ uint64_t StoreSize = DL.getTypeStoreSize(A->getType());
+ if (StoreSize != DL.getTypeStoreSize(B->getType()) || StoreSize > 128)
return false;
Type *IntTy = IntegerType::get(A->getContext(), StoreSize*8);
// DataLayout.
if (isa<PointerType>(A->getType()))
A = ConstantFoldInstOperands(Instruction::PtrToInt, IntTy,
- const_cast<Constant*>(A), TD);
+ const_cast<Constant *>(A), DL);
else if (A->getType() != IntTy)
A = ConstantFoldInstOperands(Instruction::BitCast, IntTy,
- const_cast<Constant*>(A), TD);
+ const_cast<Constant *>(A), DL);
if (isa<PointerType>(B->getType()))
B = ConstantFoldInstOperands(Instruction::PtrToInt, IntTy,
- const_cast<Constant*>(B), TD);
+ const_cast<Constant *>(B), DL);
else if (B->getType() != IntTy)
B = ConstantFoldInstOperands(Instruction::BitCast, IntTy,
- const_cast<Constant*>(B), TD);
+ const_cast<Constant *>(B), DL);
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.
-///
-unsigned MachineConstantPool::getConstantPoolIndex(const Constant *C,
+/// 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!");
if (Alignment > PoolAlignment) PoolAlignment = Alignment;
// FIXME, this could be made much more efficient for large constant pools.
for (unsigned i = 0, e = Constants.size(); i != e; ++i)
if (!Constants[i].isMachineConstantPoolEntry() &&
- CanShareConstantPoolEntry(Constants[i].Val.ConstVal, C,
- getDataLayout())) {
+ CanShareConstantPoolEntry(Constants[i].Val.ConstVal, C, DL)) {
if ((unsigned)Constants[i].getAlignment() < Alignment)
Constants[i].Alignment = Alignment;
return i;
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