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[mips] Make Filler a class and reduce indentation.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174666 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Akira Hatanaka 2013-02-07 21:32:32 +00:00
parent e0501e866c
commit 5dd41c95f3
1 changed files with 35 additions and 31 deletions
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30
lib/Target/Mips/MipsDelaySlotFiller.cpp
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@ -45,15 +45,8 @@ static cl::opt<bool> SkipDelaySlotFiller(
cl::Hidden); cl::Hidden);
namespace { namespace {
struct Filler : public MachineFunctionPass { class Filler : public MachineFunctionPass {
typedef MachineBasicBlock::instr_iterator InstrIter; public:
typedef MachineBasicBlock::reverse_instr_iterator ReverseInstrIter;
TargetMachine &TM;
const TargetInstrInfo *TII;
InstrIter LastFiller;
static char ID;
Filler(TargetMachine &tm) Filler(TargetMachine &tm)
: MachineFunctionPass(ID), TM(tm), TII(tm.getInstrInfo()) { } : MachineFunctionPass(ID), TM(tm), TII(tm.getInstrInfo()) { }
@ -61,7 +54,6 @@ namespace {
return "Mips Delay Slot Filler"; return "Mips Delay Slot Filler";
} }
bool runOnMachineBasicBlock(MachineBasicBlock &MBB);
bool runOnMachineFunction(MachineFunction &F) { bool runOnMachineFunction(MachineFunction &F) {
if (SkipDelaySlotFiller) if (SkipDelaySlotFiller)
return false; return false;
@ -73,6 +65,12 @@ namespace {
return Changed; return Changed;
} }
private:
typedef MachineBasicBlock::instr_iterator InstrIter;
typedef MachineBasicBlock::reverse_instr_iterator ReverseInstrIter;
bool runOnMachineBasicBlock(MachineBasicBlock &MBB);
bool isDelayFiller(MachineBasicBlock &MBB, bool isDelayFiller(MachineBasicBlock &MBB,
InstrIter candidate); InstrIter candidate);
@ -96,7 +94,11 @@ namespace {
findDelayInstr(MachineBasicBlock &MBB, InstrIter slot, findDelayInstr(MachineBasicBlock &MBB, InstrIter slot,
InstrIter &Filler); InstrIter &Filler);
TargetMachine &TM;
const TargetInstrInfo *TII;
InstrIter LastFiller;
static char ID;
}; };
char Filler::ID = 0; char Filler::ID = 0;
} // end of anonymous namespace } // end of anonymous namespace
@ -108,8 +110,10 @@ runOnMachineBasicBlock(MachineBasicBlock &MBB) {
bool Changed = false; bool Changed = false;
LastFiller = MBB.instr_end(); LastFiller = MBB.instr_end();
for (InstrIter I = MBB.instr_begin(); I != MBB.instr_end(); ++I) for (InstrIter I = MBB.instr_begin(); I != MBB.instr_end(); ++I) {
if (I->hasDelaySlot()) { if (!I->hasDelaySlot())
continue;
++FilledSlots; ++FilledSlots;
Changed = true; Changed = true;
InstrIter InstrWithSlot = I; InstrIter InstrWithSlot = I;
@ -131,8 +135,8 @@ runOnMachineBasicBlock(MachineBasicBlock &MBB) {
// verifier doesn't expect this instruction to be a terminator. // verifier doesn't expect this instruction to be a terminator.
MIBundleBuilder(MBB, InstrWithSlot, llvm::next(LastFiller)); MIBundleBuilder(MBB, InstrWithSlot, llvm::next(LastFiller));
} }
return Changed;
return Changed;
} }
/// createMipsDelaySlotFillerPass - Returns a pass that fills in delay /// createMipsDelaySlotFillerPass - Returns a pass that fills in delay