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Change MachineBasicBlock's vector of MachineInstr pointers into an

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ilist of MachineInstr objects. This allows constant time removal and
insertion of MachineInstr instances from anywhere in each
MachineBasicBlock. It also allows for constant time splicing of
MachineInstrs into or out of MachineBasicBlocks.

llvm-svn: 11340
This commit is contained in:
Alkis Evlogimenos
2004-02-12 02:27:10 +00:00
parent 0c3de446f6
commit 80da865f77
35 changed files with 300 additions and 336 deletions
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30
llvm/lib/CodeGen/MachineFunction.cpp
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@@ -62,34 +62,6 @@ FunctionPass *llvm::createMachineFunctionPrinterPass(std::ostream *OS,
return new Printer(OS, Banner);
}
namespace {
struct Deleter : public MachineFunctionPass {
const char *getPassName() const { return "Machine Code Deleter"; }
bool runOnMachineFunction(MachineFunction &MF) {
// Delete all of the MachineInstrs out of the function. When the sparc
// backend gets fixed, this can be dramatically simpler, but actually
// putting this stuff into the MachineBasicBlock destructor!
for (MachineFunction::iterator BB = MF.begin(), E = MF.end(); BB != E;
++BB)
while (!BB->empty())
delete BB->pop_back();
// Delete the annotation from the function now.
MachineFunction::destruct(MF.getFunction());
return true;
}
};
}
/// 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
//===---------------------------------------------------------------------===//
@@ -127,7 +99,7 @@ void MachineFunction::print(std::ostream &OS) const {
OS << "\n" << LBB->getName() << " (" << (const void*)LBB << "):\n";
for (MachineBasicBlock::const_iterator I = BB->begin(); I != BB->end();++I){
OS << "\t";
(*I)->print(OS, Target);
I->print(OS, Target);
}
}
OS << "\nEnd function \"" << Fn->getName() << "\"\n\n";