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Change MachineBasicBlock's to not be Annotations, instead they are kept as

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part of a linked list tracked by MachineFunction.  MachineBasicBlock::get
is now linear time instead of constant time, and thus is deprecated!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4337 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2002-10-28 05:30:46 +00:00
parent 07541a2711
commit d0aa0cdbc6
6 changed files with 79 additions and 48 deletions
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27
include/llvm/CodeGen/MachineBasicBlock.h
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@ -7,31 +7,28 @@
#ifndef LLVM_CODEGEN_MACHINEBASICBLOCK_H
#define LLVM_CODEGEN_MACHINEBASICBLOCK_H
#include "llvm/Annotation.h"
#include <vector>
class BasicBlock;
class MachineInstr;
template <typename T> struct ilist_traits;
extern AnnotationID MCFBB_AID;
class MachineBasicBlock : public Annotation {
class MachineBasicBlock {
std::vector<MachineInstr*> Insts;
MachineBasicBlock *Prev, *Next;
BasicBlock *BB;
public:
MachineBasicBlock() : Annotation(MCFBB_AID) {}
MachineBasicBlock(BasicBlock *bb = 0) : Prev(0), Next(0), BB(bb) {}
~MachineBasicBlock() {}
// Static methods to retrieve or destroy the MachineBasicBlock
// object for a given basic block.
static MachineBasicBlock& get(const BasicBlock *BB) {
return *(MachineBasicBlock*)
((Annotable*)BB)->getOrCreateAnnotation(MCFBB_AID);
}
static void destroy(const BasicBlock *BB) {
((Annotable*)BB)->deleteAnnotation(MCFBB_AID);
}
// get - This deprecated static method returns the MachineBasicBlock object
// for the specified BasicBlock.
//
static MachineBasicBlock& get(const BasicBlock *BB);
/// getBasicBlock - Return the LLVM basic block that this instance
/// corresponded to originally.
///
BasicBlock *getBasicBlock() const { return BB; }
typedef std::vector<MachineInstr*>::iterator iterator;
typedef std::vector<MachineInstr*>::const_iterator const_iterator;

34
include/llvm/CodeGen/MachineFunction.h
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@ -10,6 +10,7 @@
#define LLVM_CODEGEN_MACHINEFUNCTION_H
#include "llvm/CodeGen/MachineBasicBlock.h"
#include "llvm/Annotation.h"
#include "Support/NonCopyable.h"
#include "Support/HashExtras.h"
#include "Support/hash_set"
@ -59,9 +60,38 @@ public:
static MachineFunction& construct(const Function *method,
const TargetMachine &target);
static void destruct(const Function *F);
static MachineFunction& get(const Function* function);
static MachineFunction& get(const Function *F);
// Provide accessors for the MachineBasicBlock list...
typedef iplist<MachineBasicBlock> BasicBlockListType;
typedef BasicBlockListType::iterator iterator;
typedef BasicBlockListType::const_iterator const_iterator;
typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
typedef std::reverse_iterator<iterator> reverse_iterator;
// Provide accessors for basic blocks...
const BasicBlockListType &getBasicBlockList() const { return BasicBlocks; }
BasicBlockListType &getBasicBlockList() { return BasicBlocks; }
//===--------------------------------------------------------------------===//
// BasicBlock iterator forwarding functions
//
iterator begin() { return BasicBlocks.begin(); }
const_iterator begin() const { return BasicBlocks.begin(); }
iterator end () { return BasicBlocks.end(); }
const_iterator end () const { return BasicBlocks.end(); }
reverse_iterator rbegin() { return BasicBlocks.rbegin(); }
const_reverse_iterator rbegin() const { return BasicBlocks.rbegin(); }
reverse_iterator rend () { return BasicBlocks.rend(); }
const_reverse_iterator rend () const { return BasicBlocks.rend(); }
unsigned size() const { return BasicBlocks.size(); }
bool empty() const { return BasicBlocks.empty(); }
const MachineBasicBlock &front() const { return BasicBlocks.front(); }
MachineBasicBlock &front() { return BasicBlocks.front(); }
const MachineBasicBlock &back() const { return BasicBlocks.back(); }
MachineBasicBlock &back() { return BasicBlocks.back(); }
//===--------------------------------------------------------------------===//
//

14
lib/CodeGen/InstrSelection/InstrSelection.cpp
View File

@ -139,14 +139,20 @@ bool InstructionSelection::runOnFunction(Function &F)
}
//
// Record instructions in the vector for each basic block
// Create the MachineBasicBlock records and add all of the MachineInstrs
// defined in the MachineCodeForInstruction objects to also live in the
// MachineBasicBlock objects.
//
for (Function::iterator BI = F.begin(), BE = F.end(); BI != BE; ++BI)
MachineFunction &MF = MachineFunction::get(&F);
for (Function::iterator BI = F.begin(), BE = F.end(); BI != BE; ++BI) {
MachineBasicBlock *MCBB = new MachineBasicBlock(BI);
MF.getBasicBlockList().push_back(MCBB);
for (BasicBlock::iterator II = BI->begin(); II != BI->end(); ++II) {
MachineCodeForInstruction &mvec = MachineCodeForInstruction::get(II);
MachineBasicBlock &MCBB = MachineBasicBlock::get(BI);
MCBB.insert(MCBB.end(), mvec.begin(), mvec.end());
MCBB->insert(MCBB->end(), mvec.begin(), mvec.end());
}
}
// Insert phi elimination code
InsertCodeForPhis(F);

23
lib/CodeGen/MachineBasicBlock.cpp
View File

@ -1,23 +0,0 @@
//===-- MachineBasicBlock.cpp ---------------------------------------------===//
//
// Collect the sequence of machine instructions for a basic block.
//
//===----------------------------------------------------------------------===//
#include "llvm/CodeGen/MachineBasicBlock.h"
AnnotationID MCFBB_AID(
AnnotationManager::getID("CodeGen::MachineBasicBlock"));
static Annotation *CreateMCFBB(AnnotationID AID, const Annotable *, void *) {
assert(AID == MCFBB_AID);
return new MachineBasicBlock(); // Invoke constructor!
}
// Register the annotation with the annotation factory
static struct MCFBBInitializer {
MCFBBInitializer() {
AnnotationManager::registerAnnotationFactory(MCFBB_AID, &CreateMCFBB);
}
} RegisterCreateMCFBB;

15
lib/CodeGen/MachineFunction.cpp
View File

@ -72,6 +72,21 @@ Pass *createMachineCodeDestructionPass() {
}
// get - This deprecated static method returns the MachineBasicBlock object
// for the specified BasicBlock.
//
MachineBasicBlock& MachineBasicBlock::get(const BasicBlock *BB) {
const Function *F = BB->getParent();
MachineFunction &MF = MachineFunction::get(F);
for (MachineFunction::iterator I = MF.begin(), E = MF.end(); I != E; ++I)
if (I->getBasicBlock() == BB)
return *I;
assert(0 && "MachineBasicBlock object not found for specified block!");
return get(BB);
}
//===---------------------------------------------------------------------===//
// MachineFunction implementation
//===---------------------------------------------------------------------===//

14
lib/Target/SparcV9/InstrSelection/InstrSelection.cpp
View File

@ -139,14 +139,20 @@ bool InstructionSelection::runOnFunction(Function &F)
}
//
// Record instructions in the vector for each basic block
// Create the MachineBasicBlock records and add all of the MachineInstrs
// defined in the MachineCodeForInstruction objects to also live in the
// MachineBasicBlock objects.
//
for (Function::iterator BI = F.begin(), BE = F.end(); BI != BE; ++BI)
MachineFunction &MF = MachineFunction::get(&F);
for (Function::iterator BI = F.begin(), BE = F.end(); BI != BE; ++BI) {
MachineBasicBlock *MCBB = new MachineBasicBlock(BI);
MF.getBasicBlockList().push_back(MCBB);
for (BasicBlock::iterator II = BI->begin(); II != BI->end(); ++II) {
MachineCodeForInstruction &mvec = MachineCodeForInstruction::get(II);
MachineBasicBlock &MCBB = MachineBasicBlock::get(BI);
MCBB.insert(MCBB.end(), mvec.begin(), mvec.end());
MCBB->insert(MCBB->end(), mvec.begin(), mvec.end());
}
}
// Insert phi elimination code
InsertCodeForPhis(F);