unsigned reg; // the register of this interval
unsigned preference; // preferred register to allocate for this interval
float weight; // weight of this interval
- MachineInstr* remat; // definition if the definition rematerializable
Ranges ranges; // the ranges in which this register is live
/// ValueNumberInfo - If the value number definition is undefined (e.g. phi
public:
LiveInterval(unsigned Reg, float Weight)
- : reg(Reg), preference(0), weight(Weight), remat(NULL) {
+ : reg(Reg), preference(0), weight(Weight) {
}
typedef Ranges::iterator iterator;
void swap(LiveInterval& other) {
std::swap(reg, other.reg);
std::swap(weight, other.weight);
- std::swap(remat, other.remat);
std::swap(ranges, other.ranges);
std::swap(ValueNumberInfo, other.ValueNumberInfo);
}
return ValueNumberInfo.size()-1;
}
- /// getInstForValNum - Return the machine instruction index that defines the
+ /// getDefForValNum - Return the machine instruction index that defines the
/// specified value number.
- unsigned getInstForValNum(unsigned ValNo) const {
- //assert(ValNo < ValueNumberInfo.size());
+ unsigned getDefForValNum(unsigned ValNo) const {
+ assert(ValNo < ValueNumberInfo.size());
return ValueNumberInfo[ValNo].def;
}
+ /// getSrcRegForValNum - If the machine instruction that defines the
+ /// specified value number is a copy, returns the source register. Otherwise,
+ /// returns zero.
unsigned getSrcRegForValNum(unsigned ValNo) const {
- //assert(ValNo < ValueNumberInfo.size());
+ assert(ValNo < ValueNumberInfo.size());
return ValueNumberInfo[ValNo].reg;
}
+
+ /// setDefForValNum - Set the machine instruction index that defines the
+ /// specified value number.
+ void setDefForValNum(unsigned ValNo, unsigned NewDef) {
+ assert(ValNo < ValueNumberInfo.size());
+ ValueNumberInfo[ValNo].def = NewDef;
+ }
+ /// setSrcRegForValNum - Set the source register of the specified value
+ /// number.
+ void setSrcRegForValNum(unsigned ValNo, unsigned NewReg) {
+ assert(ValNo < ValueNumberInfo.size());
+ ValueNumberInfo[ValNo].reg = NewReg;
+ }
+
/// getKillsForValNum - Return the kill instruction indexes of the specified
/// value number.
- SmallVector<unsigned, 4> getKillsForValNum(unsigned ValNo) const {
- //assert(ValNo < ValueNumberInfo.size());
+ const SmallVector<unsigned, 4> &getKillsForValNum(unsigned ValNo) const {
+ assert(ValNo < ValueNumberInfo.size());
return ValueNumberInfo[ValNo].kills;
}
-
+
/// addKillForValNum - Add a kill instruction index to the specified value
/// number.
void addKillForValNum(unsigned ValNo, unsigned KillIdx) {
- ValueNumberInfo[ValNo].kills.push_back(KillIdx);
+ assert(ValNo < ValueNumberInfo.size());
+ SmallVector<unsigned, 4> &kills = ValueNumberInfo[ValNo].kills;
+ if (kills.empty()) {
+ kills.push_back(KillIdx);
+ } else {
+ SmallVector<unsigned, 4>::iterator
+ I = std::lower_bound(kills.begin(), kills.end(), KillIdx);
+ kills.insert(I, KillIdx);
+ }
+ }
+
+ /// addKills - Add a number of kills into the VNInfo kill vector. If this
+ /// interval is live at a kill point, then the kill is not added.
+ void addKills(VNInfo &VNI, const SmallVector<unsigned, 4> &kills) {
+ for (unsigned i = 0, e = kills.size(); i != e; ++i) {
+ unsigned KillIdx = kills[i];
+ if (!liveAt(KillIdx)) {
+ SmallVector<unsigned, 4>::iterator
+ I = std::lower_bound(VNI.kills.begin(), VNI.kills.end(), KillIdx);
+ VNI.kills.insert(I, KillIdx);
+ }
+ }
+ }
+
+ /// addKillsForValNum - Add a number of kills into the kills vector of
+ /// the specified value number.
+ void addKillsForValNum(unsigned ValNo,
+ const SmallVector<unsigned, 4> &kills) {
+ addKills(ValueNumberInfo[ValNo], kills);
+ }
+
+ /// isKillForValNum - Returns true if KillIdx is a kill of the specified
+ /// val#.
+ bool isKillForValNum(unsigned ValNo, unsigned KillIdx) const {
+ assert(ValNo < ValueNumberInfo.size());
+ const SmallVector<unsigned, 4> &kills = ValueNumberInfo[ValNo].kills;
+ SmallVector<unsigned, 4>::const_iterator
+ I = std::lower_bound(kills.begin(), kills.end(), KillIdx);
+ if (I == kills.end())
+ return false;
+ return *I == KillIdx;
+ }
+
+ /// removeKill - Remove the specified kill from the list of kills of
+ /// the specified val#.
+ static bool removeKill(VNInfo &VNI, unsigned KillIdx) {
+ SmallVector<unsigned, 4> &kills = VNI.kills;
+ SmallVector<unsigned, 4>::iterator
+ I = std::lower_bound(kills.begin(), kills.end(), KillIdx);
+ if (I != kills.end() && *I == KillIdx) {
+ kills.erase(I);
+ return true;
+ }
+ return false;
+ }
+
+ /// removeKillForValNum - Remove the specified kill from the list of kills
+ /// of the specified val#.
+ bool removeKillForValNum(unsigned ValNo, unsigned KillIdx) {
+ assert(ValNo < ValueNumberInfo.size());
+ return removeKill(ValueNumberInfo[ValNo], KillIdx);
+ }
+
+ /// removeKillForValNum - Remove all the kills in specified range
+ /// [Start, End] of the specified val#.
+ void removeKillForValNum(unsigned ValNo, unsigned Start, unsigned End) {
+ assert(ValNo < ValueNumberInfo.size());
+ SmallVector<unsigned, 4> &kills = ValueNumberInfo[ValNo].kills;
+ SmallVector<unsigned, 4>::iterator
+ I = std::lower_bound(kills.begin(), kills.end(), Start);
+ SmallVector<unsigned, 4>::iterator
+ E = std::upper_bound(kills.begin(), kills.end(), End);
+ kills.erase(I, E);
+ }
+
+ /// replaceKill - Replace a kill index of the specified value# with a new
+ /// kill. Returns true if OldKill was indeed a kill point.
+ static bool replaceKill(VNInfo &VNI, unsigned OldKill, unsigned NewKill) {
+ SmallVector<unsigned, 4> &kills = VNI.kills;
+ SmallVector<unsigned, 4>::iterator
+ I = std::lower_bound(kills.begin(), kills.end(), OldKill);
+ if (I != kills.end() && *I == OldKill) {
+ *I = NewKill;
+ return true;
+ }
+ return false;
+ }
+
+ /// replaceKillForValNum - Replace a kill index of the specified value# with
+ /// a new kill. Returns true if OldKill was indeed a kill point.
+ bool replaceKillForValNum(unsigned ValNo, unsigned OldKill,
+ unsigned NewKill) {
+ assert(ValNo < ValueNumberInfo.size());
+ return replaceKill(ValueNumberInfo[ValNo], OldKill, NewKill);
}
+ /// getValNumInfo - Returns a copy of the specified val#.
+ ///
VNInfo getValNumInfo(unsigned ValNo) const {
- //assert(ValNo < ValueNumberInfo.size());
+ assert(ValNo < ValueNumberInfo.size());
return ValueNumberInfo[ValNo];
}
- /// setValueNumberInfo - Change the value number info for the specified
+ /// setValNumInfo - Change the value number info for the specified
/// value number.
- void setValueNumberInfo(unsigned ValNo, const VNInfo &I) {
+ void setValNumInfo(unsigned ValNo, const VNInfo &I) {
ValueNumberInfo[ValNo] = I;
}
+ /// copyValNumInfo - Copy the value number info for one value number to
+ /// another.
+ void copyValNumInfo(unsigned DstValNo, unsigned SrcValNo) {
+ ValueNumberInfo[DstValNo] = ValueNumberInfo[SrcValNo];
+ }
+ void copyValNumInfo(unsigned DstValNo, const LiveInterval &SrcLI,
+ unsigned SrcValNo) {
+ ValueNumberInfo[DstValNo] = SrcLI.ValueNumberInfo[SrcValNo];
+ }
+
/// MergeValueNumberInto - This method is called when two value nubmers
/// are found to be equivalent. This eliminates V1, replacing all
/// LiveRanges with the V1 value number with the V2 value number. This can
projects / oota-llvm.git / blobdiff