//
//===----------------------------------------------------------------------===//
+#include "llvm/DerivedTypes.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineInstr.h"
#include "llvm/CodeGen/SSARegMap.h"
#include "llvm/CodeGen/MachineConstantPool.h"
#include "llvm/CodeGen/MachineJumpTableInfo.h"
#include "llvm/CodeGen/Passes.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/LeakDetector.h"
+#include "llvm/Support/Compiler.h"
#include "llvm/Support/GraphWriter.h"
+#include "llvm/Support/LeakDetector.h"
+#include "llvm/ADT/STLExtras.h"
#include "llvm/Config/config.h"
#include <fstream>
-#include <iostream>
#include <sstream>
-
using namespace llvm;
static AnnotationID MF_AID(
AnnotationManager::getID("CodeGen::MachineCodeForFunction"));
+// Out of line virtual function to home classes.
+void MachineFunctionPass::virtfn() {}
namespace {
- struct Printer : public MachineFunctionPass {
+ struct VISIBILITY_HIDDEN Printer : public MachineFunctionPass {
std::ostream *OS;
const std::string Banner;
}
namespace {
- struct Deleter : public MachineFunctionPass {
+ struct VISIBILITY_HIDDEN Deleter : public MachineFunctionPass {
const char *getPassName() const { return "Machine Code Deleter"; }
bool runOnMachineFunction(MachineFunction &MF) {
MachineFunction::MachineFunction(const Function *F,
const TargetMachine &TM)
- : Annotation(MF_AID), Fn(F), Target(TM), UsedPhysRegs(0) {
+ : Annotation(MF_AID), Fn(F), Target(TM) {
SSARegMapping = new SSARegMap();
MFInfo = 0;
FrameInfo = new MachineFrameInfo();
ConstantPool = new MachineConstantPool(TM.getTargetData());
- JumpTableInfo = new MachineJumpTableInfo(TM.getTargetData());
+ UsedPhysRegs.resize(TM.getRegisterInfo()->getNumRegs());
+
+ // 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 MachineJumpTableInfo(EntrySize, Alignment);
+
BasicBlocks.Parent = this;
}
delete FrameInfo;
delete ConstantPool;
delete JumpTableInfo;
- delete[] UsedPhysRegs;
}
-void MachineFunction::dump() const { print(std::cerr); }
+
+/// 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.
+void MachineFunction::RenumberBlocks(MachineBasicBlock *MBB) {
+ if (empty()) { MBBNumbering.clear(); return; }
+ MachineFunction::iterator MBBI, E = end();
+ if (MBB == 0)
+ MBBI = begin();
+ else
+ MBBI = MBB;
+
+ // Figure out the block number this should have.
+ unsigned BlockNo = 0;
+ if (MBBI != begin())
+ BlockNo = prior(MBBI)->getNumber()+1;
+
+ for (; MBBI != E; ++MBBI, ++BlockNo) {
+ if (MBBI->getNumber() != (int)BlockNo) {
+ // Remove use of the old number.
+ if (MBBI->getNumber() != -1) {
+ assert(MBBNumbering[MBBI->getNumber()] == &*MBBI &&
+ "MBB number mismatch!");
+ MBBNumbering[MBBI->getNumber()] = 0;
+ }
+
+ // If BlockNo is already taken, set that block's number to -1.
+ if (MBBNumbering[BlockNo])
+ MBBNumbering[BlockNo]->setNumber(-1);
+
+ MBBNumbering[BlockNo] = MBBI;
+ MBBI->setNumber(BlockNo);
+ }
+ }
+
+ // Okay, all the blocks are renumbered. If we have compactified the block
+ // numbering, shrink MBBNumbering now.
+ assert(BlockNo <= MBBNumbering.size() && "Mismatch!");
+ MBBNumbering.resize(BlockNo);
+}
+
+
+void MachineFunction::dump() const { print(*cerr.stream()); }
void MachineFunction::print(std::ostream &OS) const {
OS << "# Machine code for " << Fn->getName () << "():\n";
OS << " " << MRI->getName(I->first);
else
OS << " Reg #" << I->first;
+
+ if (I->second)
+ OS << " in VR#" << I->second << " ";
}
OS << "\n";
}
void MachineFunction::viewCFG() const
{
#ifndef NDEBUG
- std::string Filename = "/tmp/cfg." + getFunction()->getName() + ".dot";
- std::cerr << "Writing '" << Filename << "'... ";
- std::ofstream F(Filename.c_str());
-
- if (!F) {
- std::cerr << " error opening file for writing!\n";
- return;
- }
-
- WriteGraph(F, this);
- F.close();
- std::cerr << "\n";
-
-#ifdef HAVE_GRAPHVIZ
- std::cerr << "Running 'Graphviz' program... " << std::flush;
- if (system((LLVM_PATH_GRAPHVIZ " " + Filename).c_str())) {
- std::cerr << "Error viewing graph: 'Graphviz' not in path?\n";
- } else {
- system(("rm " + Filename).c_str());
- return;
- }
-#endif // HAVE_GRAPHVIZ
-
-#ifdef HAVE_GV
- std::cerr << "Running 'dot' program... " << std::flush;
- if (system(("dot -Tps -Nfontname=Courier -Gsize=7.5,10 " + Filename
- + " > /tmp/cfg.tempgraph.ps").c_str())) {
- std::cerr << "Error running dot: 'dot' not in path?\n";
- } else {
- std::cerr << "\n";
- system("gv /tmp/cfg.tempgraph.ps");
- }
- system(("rm " + Filename + " /tmp/cfg.tempgraph.ps").c_str());
- return;
-#endif // HAVE_GV
-#endif // NDEBUG
- std::cerr << "MachineFunction::viewCFG is only available in debug builds on "
- << "systems with Graphviz or gv!\n";
-
-#ifndef NDEBUG
- system(("rm " + Filename).c_str());
-#endif
+ ViewGraph(this, "mf" + getFunction()->getName());
+#else
+ cerr << "SelectionDAG::viewGraph is only available in debug builds on "
+ << "systems with Graphviz or gv!\n";
+#endif // NDEBUG
}
void MachineFunction::viewCFGOnly() const
if (i < NumFixedObjects)
OS << " fixed";
if (i < NumFixedObjects || SO.SPOffset != -1) {
- int Off = SO.SPOffset - ValOffset;
+ int64_t Off = SO.SPOffset - ValOffset;
OS << " at location [SP";
if (Off > 0)
OS << "+" << Off;
}
void MachineFrameInfo::dump(const MachineFunction &MF) const {
- print(MF, std::cerr);
+ print(MF, *cerr.stream());
}
/// or return an existing one.
///
unsigned MachineJumpTableInfo::getJumpTableIndex(
- std::vector<MachineBasicBlock*> &DestBBs) {
+ 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;
}
}
-void MachineJumpTableInfo::dump() const { print(std::cerr); }
+void MachineJumpTableInfo::dump() const { print(*cerr.stream()); }
//===----------------------------------------------------------------------===//
// MachineConstantPool implementation
//===----------------------------------------------------------------------===//
+const Type *MachineConstantPoolEntry::getType() const {
+ if (isMachineConstantPoolEntry())
+ return Val.MachineCPVal->getType();
+ return Val.ConstVal->getType();
+}
+
+MachineConstantPool::~MachineConstantPool() {
+ for (unsigned i = 0, e = Constants.size(); i != e; ++i)
+ if (Constants[i].isMachineConstantPoolEntry())
+ delete Constants[i].Val.MachineCPVal;
+}
+
/// getConstantPoolIndex - Create a new entry in the constant pool or return
/// an existing one. User must specify an alignment in bytes for the object.
///
// FIXME, this could be made much more efficient for large constant pools.
unsigned AlignMask = (1 << Alignment)-1;
for (unsigned i = 0, e = Constants.size(); i != e; ++i)
- if (Constants[i].Val == C && (Constants[i].Offset & AlignMask) == 0)
+ if (Constants[i].Val.ConstVal == C && (Constants[i].Offset & AlignMask)== 0)
return i;
unsigned Offset = 0;
if (!Constants.empty()) {
- Offset = Constants.back().Offset;
- Offset += TD.getTypeSize(Constants.back().Val->getType());
+ Offset = Constants.back().getOffset();
+ Offset += TD->getTypeSize(Constants.back().getType());
Offset = (Offset+AlignMask)&~AlignMask;
}
return Constants.size()-1;
}
+unsigned MachineConstantPool::getConstantPoolIndex(MachineConstantPoolValue *V,
+ 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.
+ unsigned AlignMask = (1 << Alignment)-1;
+ int Idx = V->getExistingMachineCPValue(this, Alignment);
+ if (Idx != -1)
+ return (unsigned)Idx;
+
+ unsigned Offset = 0;
+ if (!Constants.empty()) {
+ Offset = Constants.back().getOffset();
+ Offset += TD->getTypeSize(Constants.back().getType());
+ Offset = (Offset+AlignMask)&~AlignMask;
+ }
+
+ Constants.push_back(MachineConstantPoolEntry(V, Offset));
+ return Constants.size()-1;
+}
+
void MachineConstantPool::print(std::ostream &OS) const {
for (unsigned i = 0, e = Constants.size(); i != e; ++i) {
- OS << " <cp #" << i << "> is" << *(Value*)Constants[i].Val;
- OS << " , offset=" << Constants[i].Offset;
+ OS << " <cp #" << i << "> is";
+ if (Constants[i].isMachineConstantPoolEntry())
+ Constants[i].Val.MachineCPVal->print(OS);
+ else
+ OS << *(Value*)Constants[i].Val.ConstVal;
+ OS << " , offset=" << Constants[i].getOffset();
OS << "\n";
}
}
-void MachineConstantPool::dump() const { print(std::cerr); }
+void MachineConstantPool::dump() const { print(*cerr.stream()); }
projects / oota-llvm.git / blobdiff