Convert VirtRegMap to a MachineFunctionPass.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66870 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/VirtRegMap.cpp b/lib/CodeGen/VirtRegMap.cpp
index 0bfbded..2c7037c 100644
--- a/lib/CodeGen/VirtRegMap.cpp
+++ b/lib/CodeGen/VirtRegMap.cpp
@@ -43,20 +43,42 @@
// VirtRegMap implementation
//===----------------------------------------------------------------------===//
-VirtRegMap::VirtRegMap(MachineFunction &mf)
- : TII(*mf.getTarget().getInstrInfo()), MF(mf),
- Virt2PhysMap(NO_PHYS_REG), Virt2StackSlotMap(NO_STACK_SLOT),
- Virt2ReMatIdMap(NO_STACK_SLOT), Virt2SplitMap(0),
- Virt2SplitKillMap(0), ReMatMap(NULL), ReMatId(MAX_STACK_SLOT+1),
- LowSpillSlot(NO_STACK_SLOT), HighSpillSlot(NO_STACK_SLOT) {
+char VirtRegMap::ID = 0;
+
+static RegisterPass<VirtRegMap>
+X("virtregmap", "Virtual Register Map");
+
+bool VirtRegMap::runOnMachineFunction(MachineFunction &mf) {
+ TII = mf.getTarget().getInstrInfo();
+ MF = &mf;
+
+ ReMatId = MAX_STACK_SLOT+1;
+ LowSpillSlot = HighSpillSlot = NO_STACK_SLOT;
+
+ Virt2PhysMap.clear();
+ Virt2StackSlotMap.clear();
+ Virt2ReMatIdMap.clear();
+ Virt2SplitMap.clear();
+ Virt2SplitKillMap.clear();
+ ReMatMap.clear();
+ ImplicitDefed.clear();
+ SpillSlotToUsesMap.clear();
+ MI2VirtMap.clear();
+ SpillPt2VirtMap.clear();
+ RestorePt2VirtMap.clear();
+ EmergencySpillMap.clear();
+ EmergencySpillSlots.clear();
+
SpillSlotToUsesMap.resize(8);
- ImplicitDefed.resize(MF.getRegInfo().getLastVirtReg()+1-
+ ImplicitDefed.resize(MF->getRegInfo().getLastVirtReg()+1-
TargetRegisterInfo::FirstVirtualRegister);
grow();
+
+ return false;
}
void VirtRegMap::grow() {
- unsigned LastVirtReg = MF.getRegInfo().getLastVirtReg();
+ unsigned LastVirtReg = MF->getRegInfo().getLastVirtReg();
Virt2PhysMap.grow(LastVirtReg);
Virt2StackSlotMap.grow(LastVirtReg);
Virt2ReMatIdMap.grow(LastVirtReg);
@@ -70,8 +92,8 @@
assert(TargetRegisterInfo::isVirtualRegister(virtReg));
assert(Virt2StackSlotMap[virtReg] == NO_STACK_SLOT &&
"attempt to assign stack slot to already spilled register");
- const TargetRegisterClass* RC = MF.getRegInfo().getRegClass(virtReg);
- int SS = MF.getFrameInfo()->CreateStackObject(RC->getSize(),
+ const TargetRegisterClass* RC = MF->getRegInfo().getRegClass(virtReg);
+ int SS = MF->getFrameInfo()->CreateStackObject(RC->getSize(),
RC->getAlignment());
if (LowSpillSlot == NO_STACK_SLOT)
LowSpillSlot = SS;
@@ -90,7 +112,7 @@
assert(Virt2StackSlotMap[virtReg] == NO_STACK_SLOT &&
"attempt to assign stack slot to already spilled register");
assert((SS >= 0 ||
- (SS >= MF.getFrameInfo()->getObjectIndexBegin())) &&
+ (SS >= MF->getFrameInfo()->getObjectIndexBegin())) &&
"illegal fixed frame index");
Virt2StackSlotMap[virtReg] = SS;
}
@@ -115,7 +137,7 @@
EmergencySpillSlots.find(RC);
if (I != EmergencySpillSlots.end())
return I->second;
- int SS = MF.getFrameInfo()->CreateStackObject(RC->getSize(),
+ int SS = MF->getFrameInfo()->CreateStackObject(RC->getSize(),
RC->getAlignment());
if (LowSpillSlot == NO_STACK_SLOT)
LowSpillSlot = SS;
@@ -126,7 +148,7 @@
}
void VirtRegMap::addSpillSlotUse(int FI, MachineInstr *MI) {
- if (!MF.getFrameInfo()->isFixedObjectIndex(FI)) {
+ if (!MF->getFrameInfo()->isFixedObjectIndex(FI)) {
// If FI < LowSpillSlot, this stack reference was produced by
// instruction selection and is not a spill
if (FI >= LowSpillSlot) {
@@ -163,7 +185,7 @@
if (!MO.isFI())
continue;
int FI = MO.getIndex();
- if (MF.getFrameInfo()->isFixedObjectIndex(FI))
+ if (MF->getFrameInfo()->isFixedObjectIndex(FI))
continue;
// This stack reference was produced by instruction selection and
// is not a spill
@@ -179,19 +201,19 @@
EmergencySpillMap.erase(MI);
}
-void VirtRegMap::print(std::ostream &OS) const {
- const TargetRegisterInfo* TRI = MF.getTarget().getRegisterInfo();
+void VirtRegMap::print(std::ostream &OS, const Module* M) const {
+ const TargetRegisterInfo* TRI = MF->getTarget().getRegisterInfo();
OS << "********** REGISTER MAP **********\n";
for (unsigned i = TargetRegisterInfo::FirstVirtualRegister,
- e = MF.getRegInfo().getLastVirtReg(); i <= e; ++i) {
+ e = MF->getRegInfo().getLastVirtReg(); i <= e; ++i) {
if (Virt2PhysMap[i] != (unsigned)VirtRegMap::NO_PHYS_REG)
OS << "[reg" << i << " -> " << TRI->getName(Virt2PhysMap[i])
<< "]\n";
}
for (unsigned i = TargetRegisterInfo::FirstVirtualRegister,
- e = MF.getRegInfo().getLastVirtReg(); i <= e; ++i)
+ e = MF->getRegInfo().getLastVirtReg(); i <= e; ++i)
if (Virt2StackSlotMap[i] != VirtRegMap::NO_STACK_SLOT)
OS << "[reg" << i << " -> fi#" << Virt2StackSlotMap[i] << "]\n";
OS << '\n';