-//===-- DelaySlotFiller.cpp - SparcV8 delay slot filler -------------------===//
-//
+//===-- DelaySlotFiller.cpp - SPARC delay slot filler ---------------------===//
+//
// The LLVM Compiler Infrastructure
//
-// This file was developed by the LLVM research group and is distributed under
-// the University of Illinois Open Source License. See LICENSE.TXT for details.
-//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
//===----------------------------------------------------------------------===//
//
-// Simple local delay slot filler for SparcV8 machine code
+// This is a simple local pass that fills delay slots with NOPs.
//
//===----------------------------------------------------------------------===//
-#include "SparcV8.h"
+#define DEBUG_TYPE "delayslotfiller"
+#include "Sparc.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
-#include "Support/Statistic.h"
-
+#include "llvm/Target/TargetMachine.h"
+#include "llvm/Target/TargetInstrInfo.h"
+#include "llvm/ADT/Statistic.h"
using namespace llvm;
-namespace {
- Statistic<> FilledSlots ("delayslotfiller", "Num. of delay slots filled");
+STATISTIC(FilledSlots, "Number of delay slots filled");
+namespace {
struct Filler : public MachineFunctionPass {
/// Target machine description which we query for reg. names, data
/// layout, etc.
///
TargetMachine &TM;
+ const TargetInstrInfo *TII;
- Filler (TargetMachine &tm) : TM (tm) { }
+ static char ID;
+ Filler(TargetMachine &tm)
+ : MachineFunctionPass(ID), TM(tm), TII(tm.getInstrInfo()) { }
- virtual const char *getPassName () const {
- return "SparcV8 Delay Slot Filler";
+ virtual const char *getPassName() const {
+ return "SPARC Delay Slot Filler";
}
- bool runOnMachineBasicBlock (MachineBasicBlock &MBB);
- bool runOnMachineFunction (MachineFunction &F) {
+ bool runOnMachineBasicBlock(MachineBasicBlock &MBB);
+ bool runOnMachineFunction(MachineFunction &F) {
bool Changed = false;
- for (MachineFunction::iterator FI = F.begin (), FE = F.end ();
+ for (MachineFunction::iterator FI = F.begin(), FE = F.end();
FI != FE; ++FI)
- Changed |= runOnMachineBasicBlock (*FI);
+ Changed |= runOnMachineBasicBlock(*FI);
return Changed;
}
};
+ char Filler::ID = 0;
} // end of anonymous namespace
-/// createSparcV8DelaySlotFillerPass - Returns a pass that fills in delay
-/// slots in SparcV8 MachineFunctions
+/// createSparcDelaySlotFillerPass - Returns a pass that fills in delay
+/// slots in Sparc MachineFunctions
///
-FunctionPass *llvm::createSparcV8DelaySlotFillerPass (TargetMachine &tm) {
- return new Filler (tm);
-}
-
-static bool hasDelaySlot (unsigned Opcode) {
- switch (Opcode) {
- case V8::BA:
- case V8::BCC:
- case V8::BCS:
- case V8::BE:
- case V8::BG:
- case V8::BGE:
- case V8::BGU:
- case V8::BL:
- case V8::BLE:
- case V8::BLEU:
- case V8::BNE:
- case V8::CALL:
- case V8::RETL:
- return true;
- default:
- return false;
- }
+FunctionPass *llvm::createSparcDelaySlotFillerPass(TargetMachine &tm) {
+ return new Filler(tm);
}
/// runOnMachineBasicBlock - Fill in delay slots for the given basic block.
/// Currently, we fill delay slots with NOPs. We assume there is only one
/// delay slot per delayed instruction.
///
-bool Filler::runOnMachineBasicBlock (MachineBasicBlock &MBB) {
+bool Filler::runOnMachineBasicBlock(MachineBasicBlock &MBB) {
bool Changed = false;
- for (MachineBasicBlock::iterator I = MBB.begin (); I != MBB.end (); ++I)
- if (hasDelaySlot (I->getOpcode ())) {
+ for (MachineBasicBlock::iterator I = MBB.begin(); I != MBB.end(); ++I)
+ if (I->getDesc().hasDelaySlot()) {
MachineBasicBlock::iterator J = I;
++J;
- BuildMI (MBB, J, V8::NOP, 0);
+ BuildMI(MBB, J, DebugLoc(), TII->get(SP::NOP));
++FilledSlots;
Changed = true;
}