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Initial commit of LLVM 3.4

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This commit is contained in:
Pascal Junod
2014-01-07 11:45:01 +01:00
parent 569cee53d0
commit 0c32ada97e
10493 changed files with 713743 additions and 208975 deletions
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lib/CodeGen/LiveDebugVariables.cpp
+47 -45
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@@ -108,6 +108,7 @@ class LDVImpl;
class UserValue {
const MDNode *variable; ///< The debug info variable we are part of.
unsigned offset; ///< Byte offset into variable.
bool IsIndirect; ///< true if this is a register-indirect+offset value.
DebugLoc dl; ///< The debug location for the variable. This is
///< used by dwarf writer to find lexical scope.
UserValue *leader; ///< Equivalence class leader.
@@ -130,13 +131,15 @@ class UserValue {
/// splitLocation - Replace OldLocNo ranges with NewRegs ranges where NewRegs
/// is live. Returns true if any changes were made.
bool splitLocation(unsigned OldLocNo, ArrayRef<LiveInterval*> NewRegs);
bool splitLocation(unsigned OldLocNo, ArrayRef<unsigned> NewRegs,
LiveIntervals &LIS);
public:
/// UserValue - Create a new UserValue.
UserValue(const MDNode *var, unsigned o, DebugLoc L,
UserValue(const MDNode *var, unsigned o, bool i, DebugLoc L,
LocMap::Allocator &alloc)
: variable(var), offset(o), dl(L), leader(this), next(0), locInts(alloc)
: variable(var), offset(o), IsIndirect(i), dl(L), leader(this),
next(0), locInts(alloc)
{}
/// getLeader - Get the leader of this value's equivalence class.
@@ -217,13 +220,13 @@ public:
/// End points where VNI is no longer live are added to Kills.
/// @param Idx Starting point for the definition.
/// @param LocNo Location number to propagate.
/// @param LI Restrict liveness to where LI has the value VNI. May be null.
/// @param VNI When LI is not null, this is the value to restrict to.
/// @param LR Restrict liveness to where LR has the value VNI. May be null.
/// @param VNI When LR is not null, this is the value to restrict to.
/// @param Kills Append end points of VNI's live range to Kills.
/// @param LIS Live intervals analysis.
/// @param MDT Dominator tree.
void extendDef(SlotIndex Idx, unsigned LocNo,
LiveInterval *LI, const VNInfo *VNI,
LiveRange *LR, const VNInfo *VNI,
SmallVectorImpl<SlotIndex> *Kills,
LiveIntervals &LIS, MachineDominatorTree &MDT,
UserValueScopes &UVS);
@@ -249,7 +252,8 @@ public:
/// splitRegister - Replace OldReg ranges with NewRegs ranges where NewRegs is
/// live. Returns true if any changes were made.
bool splitRegister(unsigned OldLocNo, ArrayRef<LiveInterval*> NewRegs);
bool splitRegister(unsigned OldLocNo, ArrayRef<unsigned> NewRegs,
LiveIntervals &LIS);
/// rewriteLocations - Rewrite virtual register locations according to the
/// provided virtual register map.
@@ -299,7 +303,8 @@ class LDVImpl {
UVMap userVarMap;
/// getUserValue - Find or create a UserValue.
UserValue *getUserValue(const MDNode *Var, unsigned Offset, DebugLoc DL);
UserValue *getUserValue(const MDNode *Var, unsigned Offset,
bool IsIndirect, DebugLoc DL);
/// lookupVirtReg - Find the EC leader for VirtReg or null.
UserValue *lookupVirtReg(unsigned VirtReg);
@@ -342,7 +347,7 @@ public:
void mapVirtReg(unsigned VirtReg, UserValue *EC);
/// splitRegister - Replace all references to OldReg with NewRegs.
void splitRegister(unsigned OldReg, ArrayRef<LiveInterval*> NewRegs);
void splitRegister(unsigned OldReg, ArrayRef<unsigned> NewRegs);
/// emitDebugValues - Recreate DBG_VALUE instruction from data structures.
void emitDebugValues(VirtRegMap *VRM);
@@ -414,7 +419,7 @@ void UserValue::mapVirtRegs(LDVImpl *LDV) {
}
UserValue *LDVImpl::getUserValue(const MDNode *Var, unsigned Offset,
DebugLoc DL) {
bool IsIndirect, DebugLoc DL) {
UserValue *&Leader = userVarMap[Var];
if (Leader) {
UserValue *UV = Leader->getLeader();
@@ -424,7 +429,7 @@ UserValue *LDVImpl::getUserValue(const MDNode *Var, unsigned Offset,
return UV;
}
UserValue *UV = new UserValue(Var, Offset, DL, allocator);
UserValue *UV = new UserValue(Var, Offset, IsIndirect, DL, allocator);
userValues.push_back(UV);
Leader = UserValue::merge(Leader, UV);
return UV;
@@ -445,15 +450,18 @@ UserValue *LDVImpl::lookupVirtReg(unsigned VirtReg) {
bool LDVImpl::handleDebugValue(MachineInstr *MI, SlotIndex Idx) {
// DBG_VALUE loc, offset, variable
if (MI->getNumOperands() != 3 ||
!MI->getOperand(1).isImm() || !MI->getOperand(2).isMetadata()) {
!(MI->getOperand(1).isReg() || MI->getOperand(1).isImm()) ||
!MI->getOperand(2).isMetadata()) {
DEBUG(dbgs() << "Can't handle " << *MI);
return false;
}
// Get or create the UserValue for (variable,offset).
unsigned Offset = MI->getOperand(1).getImm();
bool IsIndirect = MI->isIndirectDebugValue();
unsigned Offset = IsIndirect ? MI->getOperand(1).getImm() : 0;
const MDNode *Var = MI->getOperand(2).getMetadata();
UserValue *UV = getUserValue(Var, Offset, MI->getDebugLoc());
//here.
UserValue *UV = getUserValue(Var, Offset, IsIndirect, MI->getDebugLoc());
UV->addDef(Idx, MI->getOperand(0));
return true;
}
@@ -487,7 +495,7 @@ bool LDVImpl::collectDebugValues(MachineFunction &mf) {
}
void UserValue::extendDef(SlotIndex Idx, unsigned LocNo,
LiveInterval *LI, const VNInfo *VNI,
LiveRange *LR, const VNInfo *VNI,
SmallVectorImpl<SlotIndex> *Kills,
LiveIntervals &LIS, MachineDominatorTree &MDT,
UserValueScopes &UVS) {
@@ -501,15 +509,15 @@ void UserValue::extendDef(SlotIndex Idx, unsigned LocNo,
// Limit to VNI's live range.
bool ToEnd = true;
if (LI && VNI) {
LiveRange *Range = LI->getLiveRangeContaining(Start);
if (!Range || Range->valno != VNI) {
if (LR && VNI) {
LiveInterval::Segment *Segment = LR->getSegmentContaining(Start);
if (!Segment || Segment->valno != VNI) {
if (Kills)
Kills->push_back(Start);
continue;
}
if (Range->end < Stop)
Stop = Range->end, ToEnd = false;
if (Segment->end < Stop)
Stop = Segment->end, ToEnd = false;
}
// There could already be a short def at Start.
@@ -661,10 +669,10 @@ UserValue::computeIntervals(MachineRegisterInfo &MRI,
// For physregs, use the live range of the first regunit as a guide.
unsigned Unit = *MCRegUnitIterator(Loc.getReg(), &TRI);
LiveInterval *LI = &LIS.getRegUnit(Unit);
const VNInfo *VNI = LI->getVNInfoAt(Idx);
LiveRange *LR = &LIS.getRegUnit(Unit);
const VNInfo *VNI = LR->getVNInfoAt(Idx);
// Don't track copies from physregs, it is too expensive.
extendDef(Idx, LocNo, LI, VNI, 0, LIS, MDT, UVS);
extendDef(Idx, LocNo, LR, VNI, 0, LIS, MDT, UVS);
}
// Finally, erase all the undefs.
@@ -724,7 +732,8 @@ LiveDebugVariables::~LiveDebugVariables() {
//===----------------------------------------------------------------------===//
bool
UserValue::splitLocation(unsigned OldLocNo, ArrayRef<LiveInterval*> NewRegs) {
UserValue::splitLocation(unsigned OldLocNo, ArrayRef<unsigned> NewRegs,
LiveIntervals& LIS) {
DEBUG({
dbgs() << "Splitting Loc" << OldLocNo << '\t';
print(dbgs(), 0);
@@ -733,7 +742,7 @@ UserValue::splitLocation(unsigned OldLocNo, ArrayRef<LiveInterval*> NewRegs) {
LocMap::iterator LocMapI;
LocMapI.setMap(locInts);
for (unsigned i = 0; i != NewRegs.size(); ++i) {
LiveInterval *LI = NewRegs[i];
LiveInterval *LI = &LIS.getInterval(NewRegs[i]);
if (LI->empty())
continue;
@@ -822,7 +831,8 @@ UserValue::splitLocation(unsigned OldLocNo, ArrayRef<LiveInterval*> NewRegs) {
}
bool
UserValue::splitRegister(unsigned OldReg, ArrayRef<LiveInterval*> NewRegs) {
UserValue::splitRegister(unsigned OldReg, ArrayRef<unsigned> NewRegs,
LiveIntervals &LIS) {
bool DidChange = false;
// Split locations referring to OldReg. Iterate backwards so splitLocation can
// safely erase unused locations.
@@ -831,15 +841,15 @@ UserValue::splitRegister(unsigned OldReg, ArrayRef<LiveInterval*> NewRegs) {
const MachineOperand *Loc = &locations[LocNo];
if (!Loc->isReg() || Loc->getReg() != OldReg)
continue;
DidChange |= splitLocation(LocNo, NewRegs);
DidChange |= splitLocation(LocNo, NewRegs, LIS);
}
return DidChange;
}
void LDVImpl::splitRegister(unsigned OldReg, ArrayRef<LiveInterval*> NewRegs) {
void LDVImpl::splitRegister(unsigned OldReg, ArrayRef<unsigned> NewRegs) {
bool DidChange = false;
for (UserValue *UV = lookupVirtReg(OldReg); UV; UV = UV->getNext())
DidChange |= UV->splitRegister(OldReg, NewRegs);
DidChange |= UV->splitRegister(OldReg, NewRegs, *LIS);
if (!DidChange)
return;
@@ -847,11 +857,11 @@ void LDVImpl::splitRegister(unsigned OldReg, ArrayRef<LiveInterval*> NewRegs) {
// Map all of the new virtual registers.
UserValue *UV = lookupVirtReg(OldReg);
for (unsigned i = 0; i != NewRegs.size(); ++i)
mapVirtReg(NewRegs[i]->reg, UV);
mapVirtReg(NewRegs[i], UV);
}
void LiveDebugVariables::
splitRegister(unsigned OldReg, ArrayRef<LiveInterval*> NewRegs) {
splitRegister(unsigned OldReg, ArrayRef<unsigned> NewRegs, LiveIntervals &LIS) {
if (pImpl)
static_cast<LDVImpl*>(pImpl)->splitRegister(OldReg, NewRegs);
}
@@ -921,19 +931,12 @@ void UserValue::insertDebugValue(MachineBasicBlock *MBB, SlotIndex Idx,
MachineOperand &Loc = locations[LocNo];
++NumInsertedDebugValues;
// Frame index locations may require a target callback.
if (Loc.isFI()) {
MachineInstr *MI = TII.emitFrameIndexDebugValue(*MBB->getParent(),
Loc.getIndex(), offset, variable,
findDebugLoc());
if (MI) {
MBB->insert(I, MI);
return;
}
}
// This is not a frame index, or the target is happy with a standard FI.
BuildMI(*MBB, I, findDebugLoc(), TII.get(TargetOpcode::DBG_VALUE))
.addOperand(Loc).addImm(offset).addMetadata(variable);
if (Loc.isReg())
BuildMI(*MBB, I, findDebugLoc(), TII.get(TargetOpcode::DBG_VALUE),
IsIndirect, Loc.getReg(), offset, variable);
else
BuildMI(*MBB, I, findDebugLoc(), TII.get(TargetOpcode::DBG_VALUE))
.addOperand(Loc).addImm(offset).addMetadata(variable);
}
void UserValue::emitDebugValues(VirtRegMap *VRM, LiveIntervals &LIS,
@@ -992,4 +995,3 @@ void LiveDebugVariables::dump() {
static_cast<LDVImpl*>(pImpl)->print(dbgs());
}
#endif