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Changed Call interference info

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@917 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Ruchira Sasanka 2001-10-19 17:21:59 +00:00
parent 958faf3f5a
commit 36f7707d2a
6 changed files with 54 additions and 20 deletions
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4
lib/CodeGen/RegAlloc/IGNode.h
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@ -122,8 +122,8 @@ class IGNode
// { ParentLR->markForLoadFromStack(); }
inline unsigned int getNumOfCallInterferences() const
{ return ParentLR->getNumOfCallInterferences(); }
inline unsigned int isCallInterference() const
{ return ParentLR->isCallInterference(); }
inline LiveRange *getParentLR() const
{ return ParentLR; }

31
lib/CodeGen/RegAlloc/LiveRange.h
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@ -28,13 +28,20 @@ class LiveRange : public ValueSet
RegClass *MyRegClass; // register classs (e.g., int, FP) for this LR
// a list of call instructions that interferes with this live range
vector<const Instruction *> CallInterferenceList;
//vector<const Instruction *> CallInterferenceList;
// does this live range span across calls?
// This information is used by graph
// coloring algo to avoid allocating volatile colors to live ranges
// that span across calls (since they have to be saved/restored)
bool doesSpanAcrossCalls;
IGNode *UserIGNode; // IGNode which uses this LR
int Color; // color assigned to this live range
bool mustSpill; // whether this LR must be spilt
// whether this LR must be saved accross calls
// whether this LR must be saved accross calls ***TODO REMOVE this
bool mustSaveAcrossCalls;
// bool mustLoadFromStack; // must load from stack at start of method
@ -55,7 +62,7 @@ class LiveRange : public ValueSet
inline bool hasColor() const
{ return Color != -1; }
inline unsigned int getColor() const
{ assert( Color != -1); return (unsigned) Color ; }
@ -63,16 +70,22 @@ class LiveRange : public ValueSet
{ Color = (int) Col ; }
inline void addCallInterference(const Instruction *const Inst)
{ CallInterferenceList.push_back( Inst ); }
inline void setCallInterference()
{ doesSpanAcrossCalls = 1;
//CallInterferenceList.push_back( Inst );
}
/*
inline const Instruction *const getCallInterference(const unsigned i) const {
assert( i < CallInterferenceList.size() );
return CallInterferenceList[i];
}
*/
inline unsigned int getNumOfCallInterferences() const
{ return CallInterferenceList.size(); }
inline bool isCallInterference() const
{ return (doesSpanAcrossCalls == 1); }
inline void markForSpill() { mustSpill = true; }
@ -113,12 +126,14 @@ class LiveRange : public ValueSet
return ( SuggestedColor > -1);
}
inline LiveRange() : ValueSet() , CallInterferenceList()
inline LiveRange() : ValueSet() /* , CallInterferenceList() */
{
Color = SuggestedColor = -1; // not yet colored
mustSpill = mustSaveAcrossCalls = false;
MyRegClass = NULL;
UserIGNode = NULL;
doesSpanAcrossCalls = false;
}
};

2
lib/CodeGen/RegAlloc/PhyRegAlloc.h
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@ -84,6 +84,8 @@ class PhyRegAlloc
void insertCallerSavingCode(const MachineInstr *MInst,
const BasicBlock *BB );
void setCallInterferences(const MachineInstr *MInst,
const LiveVarSet *const LVSetAft );
inline void constructLiveRanges()
{ LRI.constructLiveRanges(); }

4
lib/Target/SparcV9/RegAlloc/IGNode.h
View File

@ -122,8 +122,8 @@ class IGNode
// { ParentLR->markForLoadFromStack(); }
inline unsigned int getNumOfCallInterferences() const
{ return ParentLR->getNumOfCallInterferences(); }
inline unsigned int isCallInterference() const
{ return ParentLR->isCallInterference(); }
inline LiveRange *getParentLR() const
{ return ParentLR; }

31
lib/Target/SparcV9/RegAlloc/LiveRange.h
View File

@ -28,13 +28,20 @@ class LiveRange : public ValueSet
RegClass *MyRegClass; // register classs (e.g., int, FP) for this LR
// a list of call instructions that interferes with this live range
vector<const Instruction *> CallInterferenceList;
//vector<const Instruction *> CallInterferenceList;
// does this live range span across calls?
// This information is used by graph
// coloring algo to avoid allocating volatile colors to live ranges
// that span across calls (since they have to be saved/restored)
bool doesSpanAcrossCalls;
IGNode *UserIGNode; // IGNode which uses this LR
int Color; // color assigned to this live range
bool mustSpill; // whether this LR must be spilt
// whether this LR must be saved accross calls
// whether this LR must be saved accross calls ***TODO REMOVE this
bool mustSaveAcrossCalls;
// bool mustLoadFromStack; // must load from stack at start of method
@ -55,7 +62,7 @@ class LiveRange : public ValueSet
inline bool hasColor() const
{ return Color != -1; }
inline unsigned int getColor() const
{ assert( Color != -1); return (unsigned) Color ; }
@ -63,16 +70,22 @@ class LiveRange : public ValueSet
{ Color = (int) Col ; }
inline void addCallInterference(const Instruction *const Inst)
{ CallInterferenceList.push_back( Inst ); }
inline void setCallInterference()
{ doesSpanAcrossCalls = 1;
//CallInterferenceList.push_back( Inst );
}
/*
inline const Instruction *const getCallInterference(const unsigned i) const {
assert( i < CallInterferenceList.size() );
return CallInterferenceList[i];
}
*/
inline unsigned int getNumOfCallInterferences() const
{ return CallInterferenceList.size(); }
inline bool isCallInterference() const
{ return (doesSpanAcrossCalls == 1); }
inline void markForSpill() { mustSpill = true; }
@ -113,12 +126,14 @@ class LiveRange : public ValueSet
return ( SuggestedColor > -1);
}
inline LiveRange() : ValueSet() , CallInterferenceList()
inline LiveRange() : ValueSet() /* , CallInterferenceList() */
{
Color = SuggestedColor = -1; // not yet colored
mustSpill = mustSaveAcrossCalls = false;
MyRegClass = NULL;
UserIGNode = NULL;
doesSpanAcrossCalls = false;
}
};

2
lib/Target/SparcV9/RegAlloc/PhyRegAlloc.h
View File

@ -84,6 +84,8 @@ class PhyRegAlloc
void insertCallerSavingCode(const MachineInstr *MInst,
const BasicBlock *BB );
void setCallInterferences(const MachineInstr *MInst,
const LiveVarSet *const LVSetAft );
inline void constructLiveRanges()
{ LRI.constructLiveRanges(); }