//===----------------------------------------------------------------------===//
#include "llvm/DerivedTypes.h"
+#include "llvm/Function.h"
+#include "llvm/Instructions.h"
+#include "llvm/Config/config.h"
#include "llvm/CodeGen/MachineConstantPool.h"
+#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineFrameInfo.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/MC/MCAsmInfo.h"
+#include "llvm/MC/MCContext.h"
+#include "llvm/Analysis/DebugInfo.h"
+#include "llvm/Support/Debug.h"
#include "llvm/Target/TargetData.h"
+#include "llvm/Target/TargetLowering.h"
#include "llvm/Target/TargetMachine.h"
-#include "llvm/Target/TargetFrameInfo.h"
-#include "llvm/Function.h"
-#include "llvm/Instructions.h"
-#include "llvm/Support/Compiler.h"
+#include "llvm/Target/TargetFrameLowering.h"
+#include "llvm/ADT/SmallString.h"
+#include "llvm/ADT/STLExtras.h"
#include "llvm/Support/GraphWriter.h"
#include "llvm/Support/raw_ostream.h"
-#include "llvm/ADT/STLExtras.h"
-#include "llvm/Config/config.h"
-#include <fstream>
-#include <sstream>
using namespace llvm;
-static AnnotationID MF_AID(
- AnnotationManager::getID("CodeGen::MachineCodeForFunction"));
-
-bool MachineFunctionPass::runOnFunction(Function &F) {
- // Do not codegen any 'available_externally' functions at all, they have
- // definitions outside the translation unit.
- if (F.hasAvailableExternallyLinkage())
- return false;
-
- return runOnMachineFunction(MachineFunction::get(&F));
-}
-
-namespace {
- struct VISIBILITY_HIDDEN Printer : public MachineFunctionPass {
- static char ID;
-
- std::ostream *OS;
- const std::string Banner;
-
- Printer (std::ostream *os, const std::string &banner)
- : MachineFunctionPass(&ID), OS(os), Banner(banner) {}
-
- const char *getPassName() const { return "MachineFunction Printer"; }
-
- virtual void getAnalysisUsage(AnalysisUsage &AU) const {
- AU.setPreservesAll();
- }
-
- bool runOnMachineFunction(MachineFunction &MF) {
- (*OS) << Banner;
- MF.print (*OS);
- return false;
- }
- };
- char Printer::ID = 0;
-}
-
-/// Returns a newly-created MachineFunction Printer pass. The default output
-/// stream is std::cerr; the default banner is empty.
-///
-FunctionPass *llvm::createMachineFunctionPrinterPass(std::ostream *OS,
- const std::string &Banner){
- return new Printer(OS, Banner);
-}
-
-namespace {
- struct VISIBILITY_HIDDEN Deleter : public MachineFunctionPass {
- static char ID;
- Deleter() : MachineFunctionPass(&ID) {}
-
- const char *getPassName() const { return "Machine Code Deleter"; }
-
- bool runOnMachineFunction(MachineFunction &MF) {
- // Delete the annotation from the function now.
- MachineFunction::destruct(MF.getFunction());
- return true;
- }
- };
- char Deleter::ID = 0;
-}
-
-/// MachineCodeDeletion Pass - This pass deletes all of the machine code for
-/// the current function, which should happen after the function has been
-/// emitted to a .s file or to memory.
-FunctionPass *llvm::createMachineCodeDeleter() {
- return new Deleter();
-}
-
-
-
-//===---------------------------------------------------------------------===//
+//===----------------------------------------------------------------------===//
// MachineFunction implementation
-//===---------------------------------------------------------------------===//
+//===----------------------------------------------------------------------===//
+
+// Out of line virtual method.
+MachineFunctionInfo::~MachineFunctionInfo() {}
void ilist_traits<MachineBasicBlock>::deleteNode(MachineBasicBlock *MBB) {
MBB->getParent()->DeleteMachineBasicBlock(MBB);
}
-MachineFunction::MachineFunction(const Function *F,
- const TargetMachine &TM)
- : Annotation(MF_AID), Fn(F), Target(TM) {
+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.Allocate<MachineRegisterInfo>())
- MachineRegisterInfo(*TM.getRegisterInfo());
+ RegInfo = new (Allocator) MachineRegisterInfo(*TM.getRegisterInfo());
else
RegInfo = 0;
MFInfo = 0;
- FrameInfo = new (Allocator.Allocate<MachineFrameInfo>())
- MachineFrameInfo(*TM.getFrameInfo());
- ConstantPool = new (Allocator.Allocate<MachineConstantPool>())
- MachineConstantPool(TM.getTargetData());
-
- // Set up jump table.
- const TargetData &TD = *TM.getTargetData();
- bool IsPic = TM.getRelocationModel() == Reloc::PIC_;
- unsigned EntrySize = IsPic ? 4 : TD.getPointerSize();
- unsigned Alignment = IsPic ? TD.getABITypeAlignment(Type::Int32Ty)
- : TD.getPointerABIAlignment();
- JumpTableInfo = new (Allocator.Allocate<MachineJumpTableInfo>())
- MachineJumpTableInfo(EntrySize, Alignment);
+ FrameInfo = new (Allocator) MachineFrameInfo(*TM.getFrameLowering());
+ if (Fn->hasFnAttr(Attribute::StackAlignment))
+ FrameInfo->setMaxAlignment(Attribute::getStackAlignmentFromAttrs(
+ Fn->getAttributes().getFnAttributes()));
+ ConstantPool = new (Allocator) MachineConstantPool(TM.getTargetData());
+ Alignment = TM.getTargetLowering()->getFunctionAlignment(F);
+ FunctionNumber = FunctionNum;
+ JumpTableInfo = 0;
}
MachineFunction::~MachineFunction() {
BasicBlocks.clear();
InstructionRecycler.clear(Allocator);
BasicBlockRecycler.clear(Allocator);
- if (RegInfo)
- RegInfo->~MachineRegisterInfo(); Allocator.Deallocate(RegInfo);
+ if (RegInfo) {
+ RegInfo->~MachineRegisterInfo();
+ Allocator.Deallocate(RegInfo);
+ }
if (MFInfo) {
- MFInfo->~MachineFunctionInfo(); Allocator.Deallocate(MFInfo);
+ MFInfo->~MachineFunctionInfo();
+ Allocator.Deallocate(MFInfo);
}
FrameInfo->~MachineFrameInfo(); Allocator.Deallocate(FrameInfo);
ConstantPool->~MachineConstantPool(); Allocator.Deallocate(ConstantPool);
- JumpTableInfo->~MachineJumpTableInfo(); Allocator.Deallocate(JumpTableInfo);
+
+ if (JumpTableInfo) {
+ JumpTableInfo->~MachineJumpTableInfo();
+ Allocator.Deallocate(JumpTableInfo);
+ }
}
+/// getOrCreateJumpTableInfo - Get the JumpTableInfo for this function, if it
+/// does already exist, allocate one.
+MachineJumpTableInfo *MachineFunction::
+getOrCreateJumpTableInfo(unsigned EntryKind) {
+ if (JumpTableInfo) return JumpTableInfo;
+
+ JumpTableInfo = new (Allocator)
+ MachineJumpTableInfo((MachineJumpTableInfo::JTEntryKind)EntryKind);
+ return JumpTableInfo;
+}
/// RenumberBlocks - This discards all of the MachineBasicBlock numbers and
/// recomputes them. This guarantees that the MBB numbers are sequential,
}
/// CloneMachineInstr - Create a new MachineInstr which is a copy of the
-/// 'Orig' instruction, identical in all ways except the the instruction
+/// 'Orig' instruction, identical in all ways except the instruction
/// has no parent, prev, or next.
///
MachineInstr *
///
void
MachineFunction::DeleteMachineInstr(MachineInstr *MI) {
- // Clear the instructions memoperands. This must be done manually because
- // the instruction's parent pointer is now null, so it can't properly
- // deallocate them on its own.
- MI->clearMemOperands(*this);
-
MI->~MachineInstr();
InstructionRecycler.Deallocate(Allocator, MI);
}
BasicBlockRecycler.Deallocate(Allocator, MBB);
}
+MachineMemOperand *
+MachineFunction::getMachineMemOperand(MachinePointerInfo PtrInfo, unsigned f,
+ uint64_t s, unsigned base_alignment,
+ const MDNode *TBAAInfo) {
+ return new (Allocator) MachineMemOperand(PtrInfo, f, s, base_alignment,
+ TBAAInfo);
+}
+
+MachineMemOperand *
+MachineFunction::getMachineMemOperand(const MachineMemOperand *MMO,
+ int64_t Offset, uint64_t Size) {
+ return new (Allocator)
+ MachineMemOperand(MachinePointerInfo(MMO->getValue(),
+ MMO->getOffset()+Offset),
+ MMO->getFlags(), Size,
+ MMO->getBaseAlignment(), 0);
+}
+
+MachineInstr::mmo_iterator
+MachineFunction::allocateMemRefsArray(unsigned long Num) {
+ return Allocator.Allocate<MachineMemOperand *>(Num);
+}
+
+std::pair<MachineInstr::mmo_iterator, MachineInstr::mmo_iterator>
+MachineFunction::extractLoadMemRefs(MachineInstr::mmo_iterator Begin,
+ MachineInstr::mmo_iterator End) {
+ // Count the number of load mem refs.
+ unsigned Num = 0;
+ for (MachineInstr::mmo_iterator I = Begin; I != End; ++I)
+ if ((*I)->isLoad())
+ ++Num;
+
+ // Allocate a new array and populate it with the load information.
+ MachineInstr::mmo_iterator Result = allocateMemRefsArray(Num);
+ unsigned Index = 0;
+ for (MachineInstr::mmo_iterator I = Begin; I != End; ++I) {
+ if ((*I)->isLoad()) {
+ if (!(*I)->isStore())
+ // Reuse the MMO.
+ Result[Index] = *I;
+ else {
+ // Clone the MMO and unset the store flag.
+ MachineMemOperand *JustLoad =
+ getMachineMemOperand((*I)->getPointerInfo(),
+ (*I)->getFlags() & ~MachineMemOperand::MOStore,
+ (*I)->getSize(), (*I)->getBaseAlignment(),
+ (*I)->getTBAAInfo());
+ Result[Index] = JustLoad;
+ }
+ ++Index;
+ }
+ }
+ return std::make_pair(Result, Result + Num);
+}
+
+std::pair<MachineInstr::mmo_iterator, MachineInstr::mmo_iterator>
+MachineFunction::extractStoreMemRefs(MachineInstr::mmo_iterator Begin,
+ MachineInstr::mmo_iterator End) {
+ // Count the number of load mem refs.
+ unsigned Num = 0;
+ for (MachineInstr::mmo_iterator I = Begin; I != End; ++I)
+ if ((*I)->isStore())
+ ++Num;
+
+ // Allocate a new array and populate it with the store information.
+ MachineInstr::mmo_iterator Result = allocateMemRefsArray(Num);
+ unsigned Index = 0;
+ for (MachineInstr::mmo_iterator I = Begin; I != End; ++I) {
+ if ((*I)->isStore()) {
+ if (!(*I)->isLoad())
+ // Reuse the MMO.
+ Result[Index] = *I;
+ else {
+ // Clone the MMO and unset the load flag.
+ MachineMemOperand *JustStore =
+ getMachineMemOperand((*I)->getPointerInfo(),
+ (*I)->getFlags() & ~MachineMemOperand::MOLoad,
+ (*I)->getSize(), (*I)->getBaseAlignment(),
+ (*I)->getTBAAInfo());
+ Result[Index] = JustStore;
+ }
+ ++Index;
+ }
+ }
+ return std::make_pair(Result, Result + Num);
+}
+
void MachineFunction::dump() const {
- print(*cerr.stream());
+ print(dbgs());
}
-void MachineFunction::print(std::ostream &OS) const {
- OS << "# Machine code for " << Fn->getName () << "():\n";
+void MachineFunction::print(raw_ostream &OS, SlotIndexes *Indexes) const {
+ OS << "# Machine code for function " << Fn->getName() << ":\n";
// Print Frame Information
FrameInfo->print(*this, OS);
// Print JumpTable Information
- JumpTableInfo->print(OS);
+ if (JumpTableInfo)
+ JumpTableInfo->print(OS);
// Print Constant Pool
- {
- raw_os_ostream OSS(OS);
- ConstantPool->print(OSS);
- }
+ ConstantPool->print(OS);
const TargetRegisterInfo *TRI = getTarget().getRegisterInfo();
if (RegInfo && !RegInfo->livein_empty()) {
- OS << "Live Ins:";
+ OS << "Function Live Ins: ";
for (MachineRegisterInfo::livein_iterator
I = RegInfo->livein_begin(), E = RegInfo->livein_end(); I != E; ++I) {
if (TRI)
- OS << " " << TRI->getName(I->first);
+ OS << "%" << TRI->getName(I->first);
else
- OS << " Reg #" << I->first;
+ OS << " %physreg" << I->first;
if (I->second)
- OS << " in VR#" << I->second << " ";
+ OS << " in reg%" << I->second;
+
+ if (llvm::next(I) != E)
+ OS << ", ";
}
- OS << "\n";
+ OS << '\n';
}
if (RegInfo && !RegInfo->liveout_empty()) {
- OS << "Live Outs:";
+ OS << "Function Live Outs: ";
for (MachineRegisterInfo::liveout_iterator
- I = RegInfo->liveout_begin(), E = RegInfo->liveout_end(); I != E; ++I)
+ I = RegInfo->liveout_begin(), E = RegInfo->liveout_end(); I != E; ++I){
if (TRI)
- OS << " " << TRI->getName(*I);
+ OS << '%' << TRI->getName(*I);
else
- OS << " Reg #" << *I;
- OS << "\n";
+ OS << "%physreg" << *I;
+
+ if (llvm::next(I) != E)
+ OS << " ";
+ }
+ OS << '\n';
}
- for (const_iterator BB = begin(); BB != end(); ++BB)
- BB->print(OS);
+ for (const_iterator BB = begin(), E = end(); BB != E; ++BB) {
+ OS << '\n';
+ BB->print(OS, Indexes);
+ }
- OS << "\n# End machine code for " << Fn->getName () << "().\n\n";
+ OS << "\n# End machine code for function " << Fn->getName() << ".\n\n";
}
-/// CFGOnly flag - This is used to control whether or not the CFG graph printer
-/// prints out the contents of basic blocks or not. This is acceptable because
-/// this code is only really used for debugging purposes.
-///
-static bool CFGOnly = false;
-
namespace llvm {
template<>
struct DOTGraphTraits<const MachineFunction*> : public DefaultDOTGraphTraits {
+
+ DOTGraphTraits (bool isSimple=false) : DefaultDOTGraphTraits(isSimple) {}
+
static std::string getGraphName(const MachineFunction *F) {
- return "CFG for '" + F->getFunction()->getName() + "' function";
+ return "CFG for '" + F->getFunction()->getNameStr() + "' function";
}
- static std::string getNodeLabel(const MachineBasicBlock *Node,
- const MachineFunction *Graph) {
- if (CFGOnly && Node->getBasicBlock() &&
- !Node->getBasicBlock()->getName().empty())
- return Node->getBasicBlock()->getName() + ":";
-
- std::ostringstream Out;
- if (CFGOnly) {
- Out << Node->getNumber() << ':';
- return Out.str();
+ std::string getNodeLabel(const MachineBasicBlock *Node,
+ const MachineFunction *Graph) {
+ std::string OutStr;
+ {
+ raw_string_ostream OSS(OutStr);
+
+ if (isSimple()) {
+ OSS << "BB#" << Node->getNumber();
+ if (const BasicBlock *BB = Node->getBasicBlock())
+ OSS << ": " << BB->getName();
+ } else
+ Node->print(OSS);
}
- Node->print(Out);
-
- std::string OutStr = Out.str();
if (OutStr[0] == '\n') OutStr.erase(OutStr.begin());
// Process string output to make it nicer...
void MachineFunction::viewCFG() const
{
#ifndef NDEBUG
- ViewGraph(this, "mf" + getFunction()->getName());
+ ViewGraph(this, "mf" + getFunction()->getNameStr());
#else
- cerr << "SelectionDAG::viewGraph is only available in debug builds on "
- << "systems with Graphviz or gv!\n";
+ errs() << "MachineFunction::viewCFG is only available in debug builds on "
+ << "systems with Graphviz or gv!\n";
#endif // NDEBUG
}
void MachineFunction::viewCFGOnly() const
{
- CFGOnly = true;
- viewCFG();
- CFGOnly = false;
-}
-
-// The next two methods are used to construct and to retrieve
-// the MachineCodeForFunction object for the given function.
-// construct() -- Allocates and initializes for a given function and target
-// get() -- Returns a handle to the object.
-// This should not be called before "construct()"
-// for a given Function.
-//
-MachineFunction&
-MachineFunction::construct(const Function *Fn, const TargetMachine &Tar)
-{
- assert(Fn->getAnnotation(MF_AID) == 0 &&
- "Object already exists for this function!");
- MachineFunction* mcInfo = new MachineFunction(Fn, Tar);
- Fn->addAnnotation(mcInfo);
- return *mcInfo;
+#ifndef NDEBUG
+ ViewGraph(this, "mf" + getFunction()->getNameStr(), true);
+#else
+ errs() << "MachineFunction::viewCFGOnly is only available in debug builds on "
+ << "systems with Graphviz or gv!\n";
+#endif // NDEBUG
}
-void MachineFunction::destruct(const Function *Fn) {
- bool Deleted = Fn->deleteAnnotation(MF_AID);
- assert(Deleted && "Machine code did not exist for function!");
- Deleted = Deleted; // silence warning when no assertions.
+/// addLiveIn - 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,
+ DebugLoc DL) {
+ MachineRegisterInfo &MRI = getRegInfo();
+ unsigned VReg = MRI.getLiveInVirtReg(PReg);
+ if (VReg) {
+ assert(MRI.getRegClass(VReg) == RC && "Register class mismatch!");
+ return VReg;
+ }
+ VReg = MRI.createVirtualRegister(RC);
+ MRI.addLiveIn(PReg, VReg);
+ MRI.addLiveInLoc(VReg, DL);
+ return VReg;
+}
+
+/// getJTISymbol - 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,
+ bool isLinkerPrivate) const {
+ assert(JumpTableInfo && "No jump tables");
+
+ assert(JTI < JumpTableInfo->getJumpTables().size() && "Invalid JTI!");
+ const MCAsmInfo &MAI = *getTarget().getMCAsmInfo();
+
+ const char *Prefix = isLinkerPrivate ? MAI.getLinkerPrivateGlobalPrefix() :
+ MAI.getPrivateGlobalPrefix();
+ SmallString<60> Name;
+ raw_svector_ostream(Name)
+ << Prefix << "JTI" << getFunctionNumber() << '_' << JTI;
+ return Ctx.GetOrCreateSymbol(Name.str());
}
-MachineFunction& MachineFunction::get(const Function *F)
-{
- MachineFunction *mc = (MachineFunction*)F->getAnnotation(MF_AID);
- assert(mc && "Call construct() method first to allocate the object");
- return *mc;
-}
-
-/// getOrCreateDebugLocID - Look up the DebugLocTuple index with the given
-/// source file, line, and column. If none currently exists, create a new
-/// DebugLocTuple, and insert it into the DebugIdMap.
-unsigned MachineFunction::getOrCreateDebugLocID(unsigned Src, unsigned Line,
- unsigned Col) {
- DebugLocTuple Tuple(Src, Line, Col);
- DenseMap<DebugLocTuple, unsigned>::iterator II
- = DebugLocInfo.DebugIdMap.find(Tuple);
- if (II != DebugLocInfo.DebugIdMap.end())
- return II->second;
- // Add a new tuple.
- unsigned Id = DebugLocInfo.DebugLocations.size();
- DebugLocInfo.DebugLocations.push_back(Tuple);
- DebugLocInfo.DebugIdMap[Tuple] = Id;
- return Id;
-}
-
-/// getDebugLocTuple - Get the DebugLocTuple for a given DebugLoc object.
-DebugLocTuple MachineFunction::getDebugLocTuple(DebugLoc DL) const {
- unsigned Idx = DL.getIndex();
- assert(Idx < DebugLocInfo.DebugLocations.size() &&
- "Invalid index into debug locations!");
- return DebugLocInfo.DebugLocations[Idx];
+/// getPICBaseSymbol - Return a function-local symbol to represent the PIC
+/// base.
+MCSymbol *MachineFunction::getPICBaseSymbol() const {
+ const MCAsmInfo &MAI = *Target.getMCAsmInfo();
+ return Ctx.GetOrCreateSymbol(Twine(MAI.getPrivateGlobalPrefix())+
+ Twine(getFunctionNumber())+"$pb");
}
//===----------------------------------------------------------------------===//
int MachineFrameInfo::CreateFixedObject(uint64_t Size, int64_t SPOffset,
bool Immutable) {
assert(Size != 0 && "Cannot allocate zero size fixed stack objects!");
- Objects.insert(Objects.begin(), StackObject(Size, 1, SPOffset, Immutable));
+ // 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 = TFI.getStackAlignment();
+ unsigned Align = MinAlign(SPOffset, StackAlign);
+ Objects.insert(Objects.begin(), StackObject(Size, Align, SPOffset, Immutable,
+ /*isSS*/false, false));
return -++NumFixedObjects;
}
-void MachineFrameInfo::print(const MachineFunction &MF, std::ostream &OS) const{
- const TargetFrameInfo *FI = MF.getTarget().getFrameInfo();
+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 BV(TRI->getNumRegs());
+
+ // Before CSI is calculated, no registers are considered pristine. They can be
+ // freely used and PEI will make sure they are saved.
+ if (!isCalleeSavedInfoValid())
+ return BV;
+
+ for (const unsigned *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());
+
+ return BV;
+}
+
+
+void MachineFrameInfo::print(const MachineFunction &MF, raw_ostream &OS) const{
+ if (Objects.empty()) return;
+
+ const TargetFrameLowering *FI = MF.getTarget().getFrameLowering();
int ValOffset = (FI ? FI->getOffsetOfLocalArea() : 0);
+ OS << "Frame Objects:\n";
+
for (unsigned i = 0, e = Objects.size(); i != e; ++i) {
const StackObject &SO = Objects[i];
- OS << " <fi#" << (int)(i-NumFixedObjects) << ">: ";
+ OS << " fi#" << (int)(i-NumFixedObjects) << ": ";
if (SO.Size == ~0ULL) {
OS << "dead\n";
continue;
if (SO.Size == 0)
OS << "variable sized";
else
- OS << "size is " << SO.Size << " byte" << (SO.Size != 1 ? "s," : ",");
- OS << " alignment is " << SO.Alignment << " byte"
- << (SO.Alignment != 1 ? "s," : ",");
+ OS << "size=" << SO.Size;
+ OS << ", align=" << SO.Alignment;
if (i < NumFixedObjects)
- OS << " fixed";
+ OS << ", fixed";
if (i < NumFixedObjects || SO.SPOffset != -1) {
int64_t Off = SO.SPOffset - ValOffset;
- OS << " at location [SP";
+ OS << ", at location [SP";
if (Off > 0)
OS << "+" << Off;
else if (Off < 0)
}
OS << "\n";
}
-
- if (HasVarSizedObjects)
- OS << " Stack frame contains variable sized objects\n";
}
void MachineFrameInfo::dump(const MachineFunction &MF) const {
- print(MF, *cerr.stream());
+ print(MF, dbgs());
}
-
//===----------------------------------------------------------------------===//
// MachineJumpTableInfo implementation
//===----------------------------------------------------------------------===//
-/// getJumpTableIndex - Create a new jump table entry in the jump table info
-/// or return an existing one.
+/// getEntrySize - Return the size of each entry in the jump table.
+unsigned MachineJumpTableInfo::getEntrySize(const TargetData &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.
+ switch (getEntryKind()) {
+ case MachineJumpTableInfo::EK_BlockAddress:
+ return TD.getPointerSize();
+ case MachineJumpTableInfo::EK_GPRel32BlockAddress:
+ case MachineJumpTableInfo::EK_LabelDifference32:
+ case MachineJumpTableInfo::EK_Custom32:
+ return 4;
+ case MachineJumpTableInfo::EK_Inline:
+ return 0;
+ }
+ assert(0 && "Unknown jump table encoding!");
+ return ~0;
+}
+
+/// getEntryAlignment - Return the alignment of each entry in the jump table.
+unsigned MachineJumpTableInfo::getEntryAlignment(const TargetData &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
+ // alignment.
+ switch (getEntryKind()) {
+ case MachineJumpTableInfo::EK_BlockAddress:
+ return TD.getPointerABIAlignment();
+ case MachineJumpTableInfo::EK_GPRel32BlockAddress:
+ case MachineJumpTableInfo::EK_LabelDifference32:
+ case MachineJumpTableInfo::EK_Custom32:
+ return TD.getABIIntegerTypeAlignment(32);
+ case MachineJumpTableInfo::EK_Inline:
+ return 1;
+ }
+ assert(0 && "Unknown jump table encoding!");
+ return ~0;
+}
+
+/// createJumpTableIndex - Create a new jump table entry in the jump table info.
///
-unsigned MachineJumpTableInfo::getJumpTableIndex(
+unsigned MachineJumpTableInfo::createJumpTableIndex(
const std::vector<MachineBasicBlock*> &DestBBs) {
assert(!DestBBs.empty() && "Cannot create an empty jump table!");
- for (unsigned i = 0, e = JumpTables.size(); i != e; ++i)
- if (JumpTables[i].MBBs == DestBBs)
- return i;
-
JumpTables.push_back(MachineJumpTableEntry(DestBBs));
return JumpTables.size()-1;
}
/// ReplaceMBBInJumpTables - 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) {
+bool MachineJumpTableInfo::ReplaceMBBInJumpTables(MachineBasicBlock *Old,
+ MachineBasicBlock *New) {
assert(Old != New && "Not making a change?");
bool MadeChange = false;
- for (size_t i = 0, e = JumpTables.size(); i != e; ++i) {
- MachineJumpTableEntry &JTE = JumpTables[i];
- for (size_t j = 0, e = JTE.MBBs.size(); j != e; ++j)
- if (JTE.MBBs[j] == Old) {
- JTE.MBBs[j] = New;
- MadeChange = true;
- }
- }
+ for (size_t i = 0, e = JumpTables.size(); i != e; ++i)
+ ReplaceMBBInJumpTable(i, Old, New);
+ return MadeChange;
+}
+
+/// ReplaceMBBInJumpTable - 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) {
+ assert(Old != New && "Not making a change?");
+ bool MadeChange = false;
+ MachineJumpTableEntry &JTE = JumpTables[Idx];
+ for (size_t j = 0, e = JTE.MBBs.size(); j != e; ++j)
+ if (JTE.MBBs[j] == Old) {
+ JTE.MBBs[j] = New;
+ MadeChange = true;
+ }
return MadeChange;
}
-void MachineJumpTableInfo::print(std::ostream &OS) const {
- // FIXME: this is lame, maybe we could print out the MBB numbers or something
- // like {1, 2, 4, 5, 3, 0}
+void MachineJumpTableInfo::print(raw_ostream &OS) const {
+ if (JumpTables.empty()) return;
+
+ OS << "Jump Tables:\n";
+
for (unsigned i = 0, e = JumpTables.size(); i != e; ++i) {
- OS << " <jt#" << i << "> has " << JumpTables[i].MBBs.size()
- << " entries\n";
+ OS << " jt#" << i << ": ";
+ for (unsigned j = 0, f = JumpTables[i].MBBs.size(); j != f; ++j)
+ OS << " BB#" << JumpTables[i].MBBs[j]->getNumber();
}
+
+ OS << '\n';
}
-void MachineJumpTableInfo::dump() const { print(*cerr.stream()); }
+void MachineJumpTableInfo::dump() const { print(dbgs()); }
//===----------------------------------------------------------------------===//
const Type *MachineConstantPoolEntry::getType() const {
if (isMachineConstantPoolEntry())
- return Val.MachineCPVal->getType();
+ return Val.MachineCPVal->getType();
return Val.ConstVal->getType();
}
+
+unsigned MachineConstantPoolEntry::getRelocationInfo() const {
+ if (isMachineConstantPoolEntry())
+ return Val.MachineCPVal->getRelocationInfo();
+ return Val.ConstVal->getRelocationInfo();
+}
+
MachineConstantPool::~MachineConstantPool() {
for (unsigned i = 0, e = Constants.size(); i != e; ++i)
if (Constants[i].isMachineConstantPoolEntry())
delete Constants[i].Val.MachineCPVal;
}
+/// CanShareConstantPoolEntry - Test whether the given two constants
+/// can be allocated the same constant pool entry.
+static bool CanShareConstantPoolEntry(const Constant *A, const Constant *B,
+ const TargetData *TD) {
+ // Handle the trivial case quickly.
+ if (A == B) return true;
+
+ // If they have the same type but weren't the same constant, quickly
+ // reject them.
+ if (A->getType() == B->getType()) return false;
+
+ // For now, only support constants with the same size.
+ if (TD->getTypeStoreSize(A->getType()) != TD->getTypeStoreSize(B->getType()))
+ return false;
+
+ // If a floating-point value and an integer value have the same encoding,
+ // they can share a constant-pool entry.
+ if (const ConstantFP *AFP = dyn_cast<ConstantFP>(A))
+ if (const ConstantInt *BI = dyn_cast<ConstantInt>(B))
+ return AFP->getValueAPF().bitcastToAPInt() == BI->getValue();
+ if (const ConstantFP *BFP = dyn_cast<ConstantFP>(B))
+ if (const ConstantInt *AI = dyn_cast<ConstantInt>(A))
+ return BFP->getValueAPF().bitcastToAPInt() == AI->getValue();
+
+ // Two vectors can share an entry if each pair of corresponding
+ // elements could.
+ if (const ConstantVector *AV = dyn_cast<ConstantVector>(A))
+ if (const ConstantVector *BV = dyn_cast<ConstantVector>(B)) {
+ if (AV->getType()->getNumElements() != BV->getType()->getNumElements())
+ return false;
+ for (unsigned i = 0, e = AV->getType()->getNumElements(); i != e; ++i)
+ if (!CanShareConstantPoolEntry(AV->getOperand(i),
+ BV->getOperand(i), TD))
+ return false;
+ return true;
+ }
+
+ // TODO: Handle other cases.
+
+ return false;
+}
+
/// 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(Constant *C,
+unsigned MachineConstantPool::getConstantPoolIndex(const Constant *C,
unsigned Alignment) {
assert(Alignment && "Alignment must be specified!");
if (Alignment > PoolAlignment) PoolAlignment = Alignment;
-
+
// Check to see if we already have this constant.
//
// 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].Val.ConstVal == C &&
- (Constants[i].getAlignment() & (Alignment - 1)) == 0)
+ if (!Constants[i].isMachineConstantPoolEntry() &&
+ CanShareConstantPoolEntry(Constants[i].Val.ConstVal, C, TD)) {
+ if ((unsigned)Constants[i].getAlignment() < Alignment)
+ Constants[i].Alignment = Alignment;
return i;
+ }
Constants.push_back(MachineConstantPoolEntry(C, Alignment));
return Constants.size()-1;
}
void MachineConstantPool::print(raw_ostream &OS) const {
+ if (Constants.empty()) return;
+
+ OS << "Constant Pool:\n";
for (unsigned i = 0, e = Constants.size(); i != e; ++i) {
- OS << " <cp#" << i << "> is";
+ OS << " cp#" << i << ": ";
if (Constants[i].isMachineConstantPoolEntry())
Constants[i].Val.MachineCPVal->print(OS);
else
OS << *(Value*)Constants[i].Val.ConstVal;
- OS << " , alignment=" << Constants[i].getAlignment();
+ OS << ", align=" << Constants[i].getAlignment();
OS << "\n";
}
}
-void MachineConstantPool::dump() const { print(errs()); }
+void MachineConstantPool::dump() const { print(dbgs()); }
projects / oota-llvm.git / blobdiff