-//===-- FPMover.cpp - SparcV8 double-precision floating point move fixer --===//
+//===-- FPMover.cpp - Sparc double-precision floating point move fixer ----===//
//
// 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.
//
//===----------------------------------------------------------------------===//
//
//
//===----------------------------------------------------------------------===//
-#include "SparcV8.h"
+#define DEBUG_TYPE "fpmover"
+#include "Sparc.h"
+#include "SparcSubtarget.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineInstrBuilder.h"
+#include "llvm/Target/TargetMachine.h"
+#include "llvm/Target/TargetInstrInfo.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/Support/Debug.h"
-#include <iostream>
+#include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/raw_ostream.h"
using namespace llvm;
-namespace {
- Statistic<> NumFpDs("fpmover", "Number of instructions translated");
- Statistic<> NoopFpDs("fpmover", "Number of noop instructions removed");
+STATISTIC(NumFpDs , "Number of instructions translated");
+STATISTIC(NoopFpDs, "Number of noop instructions removed");
+namespace {
struct FPMover : public MachineFunctionPass {
/// Target machine description which we query for reg. names, data
/// layout, etc.
///
TargetMachine &TM;
-
- FPMover(TargetMachine &tm) : TM(tm) { }
+
+ static char ID;
+ explicit FPMover(TargetMachine &tm)
+ : MachineFunctionPass(ID), TM(tm) { }
virtual const char *getPassName() const {
- return "SparcV8 Double-FP Move Fixer";
+ return "Sparc Double-FP Move Fixer";
}
bool runOnMachineBasicBlock(MachineBasicBlock &MBB);
- bool runOnMachineFunction(MachineFunction &F) {
- bool Changed = false;
- for (MachineFunction::iterator FI = F.begin(), FE = F.end();
- FI != FE; ++FI)
- Changed |= runOnMachineBasicBlock(*FI);
- return Changed;
- }
-
+ bool runOnMachineFunction(MachineFunction &F);
};
+ char FPMover::ID = 0;
} // end of anonymous namespace
-/// createSparcV8FPMoverPass - Returns a pass that turns FpMOVD
+/// createSparcFPMoverPass - Returns a pass that turns FpMOVD
/// instructions into FMOVS instructions
///
-FunctionPass *llvm::createSparcV8FPMoverPass(TargetMachine &tm) {
+FunctionPass *llvm::createSparcFPMoverPass(TargetMachine &tm) {
return new FPMover(tm);
}
static void getDoubleRegPair(unsigned DoubleReg, unsigned &EvenReg,
unsigned &OddReg) {
static const unsigned EvenHalvesOfPairs[] = {
- V8::F0, V8::F2, V8::F4, V8::F6, V8::F8, V8::F10, V8::F12, V8::F14,
- V8::F16, V8::F18, V8::F20, V8::F22, V8::F24, V8::F26, V8::F28, V8::F30
+ SP::F0, SP::F2, SP::F4, SP::F6, SP::F8, SP::F10, SP::F12, SP::F14,
+ SP::F16, SP::F18, SP::F20, SP::F22, SP::F24, SP::F26, SP::F28, SP::F30
};
static const unsigned OddHalvesOfPairs[] = {
- V8::F1, V8::F3, V8::F5, V8::F7, V8::F9, V8::F11, V8::F13, V8::F15,
- V8::F17, V8::F19, V8::F21, V8::F23, V8::F25, V8::F27, V8::F29, V8::F31
+ SP::F1, SP::F3, SP::F5, SP::F7, SP::F9, SP::F11, SP::F13, SP::F15,
+ SP::F17, SP::F19, SP::F21, SP::F23, SP::F25, SP::F27, SP::F29, SP::F31
};
static const unsigned DoubleRegsInOrder[] = {
- V8::D0, V8::D1, V8::D2, V8::D3, V8::D4, V8::D5, V8::D6, V8::D7, V8::D8,
- V8::D9, V8::D10, V8::D11, V8::D12, V8::D13, V8::D14, V8::D15
+ SP::D0, SP::D1, SP::D2, SP::D3, SP::D4, SP::D5, SP::D6, SP::D7, SP::D8,
+ SP::D9, SP::D10, SP::D11, SP::D12, SP::D13, SP::D14, SP::D15
};
for (unsigned i = 0; i < sizeof(DoubleRegsInOrder)/sizeof(unsigned); ++i)
if (DoubleRegsInOrder[i] == DoubleReg) {
OddReg = OddHalvesOfPairs[i];
return;
}
- assert(0 && "Can't find reg");
+ llvm_unreachable("Can't find reg");
}
/// runOnMachineBasicBlock - Fixup FpMOVD instructions in this MBB.
bool Changed = false;
for (MachineBasicBlock::iterator I = MBB.begin(); I != MBB.end(); ) {
MachineInstr *MI = I++;
- if (MI->getOpcode() == V8::FpMOVD || MI->getOpcode() == V8::FpABSD ||
- MI->getOpcode() == V8::FpNEGD) {
+ DebugLoc dl = MI->getDebugLoc();
+ if (MI->getOpcode() == SP::FpMOVD || MI->getOpcode() == SP::FpABSD ||
+ MI->getOpcode() == SP::FpNEGD) {
Changed = true;
unsigned DestDReg = MI->getOperand(0).getReg();
unsigned SrcDReg = MI->getOperand(1).getReg();
- if (DestDReg == SrcDReg && MI->getOpcode() == V8::FpMOVD) {
+ if (DestDReg == SrcDReg && MI->getOpcode() == SP::FpMOVD) {
MBB.erase(MI); // Eliminate the noop copy.
++NoopFpDs;
continue;
getDoubleRegPair(DestDReg, EvenDestReg, OddDestReg);
getDoubleRegPair(SrcDReg, EvenSrcReg, OddSrcReg);
- if (MI->getOpcode() == V8::FpMOVD)
- MI->setOpcode(V8::FMOVS);
- else if (MI->getOpcode() == V8::FpNEGD)
- MI->setOpcode(V8::FNEGS);
- else if (MI->getOpcode() == V8::FpABSD)
- MI->setOpcode(V8::FABSS);
+ const TargetInstrInfo *TII = TM.getInstrInfo();
+ if (MI->getOpcode() == SP::FpMOVD)
+ MI->setDesc(TII->get(SP::FMOVS));
+ else if (MI->getOpcode() == SP::FpNEGD)
+ MI->setDesc(TII->get(SP::FNEGS));
+ else if (MI->getOpcode() == SP::FpABSD)
+ MI->setDesc(TII->get(SP::FABSS));
else
- assert(0 && "Unknown opcode!");
+ llvm_unreachable("Unknown opcode!");
- MI->SetMachineOperandReg(0, EvenDestReg);
- MI->SetMachineOperandReg(1, EvenSrcReg);
- DEBUG(std::cerr << "FPMover: the modified instr is: " << *MI);
+ MI->getOperand(0).setReg(EvenDestReg);
+ MI->getOperand(1).setReg(EvenSrcReg);
+ DEBUG(errs() << "FPMover: the modified instr is: " << *MI);
// Insert copy for the other half of the double.
if (DestDReg != SrcDReg) {
- MI = BuildMI(MBB, I, V8::FMOVS, 1, OddDestReg).addReg(OddSrcReg);
- DEBUG(std::cerr << "FPMover: the inserted instr is: " << *MI);
+ MI = BuildMI(MBB, I, dl, TM.getInstrInfo()->get(SP::FMOVS), OddDestReg)
+ .addReg(OddSrcReg);
+ DEBUG(errs() << "FPMover: the inserted instr is: " << *MI);
}
++NumFpDs;
}
}
return Changed;
}
+
+bool FPMover::runOnMachineFunction(MachineFunction &F) {
+ // If the target has V9 instructions, the fp-mover pseudos will never be
+ // emitted. Avoid a scan of the instructions to improve compile time.
+ if (TM.getSubtarget<SparcSubtarget>().isV9())
+ return false;
+
+ bool Changed = false;
+ for (MachineFunction::iterator FI = F.begin(), FE = F.end();
+ FI != FE; ++FI)
+ Changed |= runOnMachineBasicBlock(*FI);
+ return Changed;
+}