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Make a few things const, fix some comments, and simplify

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some assertions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63328 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman 2009-01-29 19:49:27 +00:00
parent f87d28745a
commit 1cc6b8ee78
1 changed files with 8 additions and 16 deletions
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24
lib/CodeGen/SelectionDAG/ScheduleDAGRRList.cpp
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@ -91,7 +91,7 @@ public:
return Topo.IsReachable(SU, TargetSU); return Topo.IsReachable(SU, TargetSU);
} }
/// willCreateCycle - Returns true if adding an edge from SU to TargetSU will /// WillCreateCycle - Returns true if adding an edge from SU to TargetSU will
/// create a cycle. /// create a cycle.
bool WillCreateCycle(SUnit *SU, SUnit *TargetSU) { bool WillCreateCycle(SUnit *SU, SUnit *TargetSU) {
return Topo.WillCreateCycle(SU, TargetSU); return Topo.WillCreateCycle(SU, TargetSU);
@ -114,8 +114,8 @@ public:
} }
private: private:
void ReleasePred(SUnit *SU, SDep *PredEdge); void ReleasePred(SUnit *SU, const SDep *PredEdge);
void ReleaseSucc(SUnit *SU, SDep *SuccEdge); void ReleaseSucc(SUnit *SU, const SDep *SuccEdge);
void CapturePred(SDep *PredEdge); void CapturePred(SDep *PredEdge);
void ScheduleNodeBottomUp(SUnit*, unsigned); void ScheduleNodeBottomUp(SUnit*, unsigned);
void ScheduleNodeTopDown(SUnit*, unsigned); void ScheduleNodeTopDown(SUnit*, unsigned);
@ -192,7 +192,7 @@ void ScheduleDAGRRList::Schedule() {
/// ReleasePred - Decrement the NumSuccsLeft count of a predecessor. Add it to /// ReleasePred - Decrement the NumSuccsLeft count of a predecessor. Add it to
/// the AvailableQueue if the count reaches zero. Also update its cycle bound. /// the AvailableQueue if the count reaches zero. Also update its cycle bound.
void ScheduleDAGRRList::ReleasePred(SUnit *SU, SDep *PredEdge) { void ScheduleDAGRRList::ReleasePred(SUnit *SU, const SDep *PredEdge) {
SUnit *PredSU = PredEdge->getSUnit(); SUnit *PredSU = PredEdge->getSUnit();
--PredSU->NumSuccsLeft; --PredSU->NumSuccsLeft;
@ -312,8 +312,7 @@ void ScheduleDAGRRList::UnscheduleNodeBottomUp(SUnit *SU) {
} }
/// BacktrackBottomUp - Backtrack scheduling to a previous cycle specified in /// BacktrackBottomUp - Backtrack scheduling to a previous cycle specified in
/// BTCycle in order to schedule a specific node. Returns the last unscheduled /// BTCycle in order to schedule a specific node.
/// SUnit. Also returns if a successor is unscheduled in the process.
void ScheduleDAGRRList::BacktrackBottomUp(SUnit *SU, unsigned BtCycle, void ScheduleDAGRRList::BacktrackBottomUp(SUnit *SU, unsigned BtCycle,
unsigned &CurCycle) { unsigned &CurCycle) {
SUnit *OldSU = NULL; SUnit *OldSU = NULL;
@ -327,11 +326,7 @@ void ScheduleDAGRRList::BacktrackBottomUp(SUnit *SU, unsigned BtCycle,
--CurCycle; --CurCycle;
} }
assert(!SU->isSucc(OldSU) && "Something is wrong!");
if (SU->isSucc(OldSU)) {
assert(false && "Something is wrong!");
abort();
}
++NumBacktracks; ++NumBacktracks;
} }
@ -751,10 +746,7 @@ void ScheduleDAGRRList::ListScheduleBottomUp() {
CurSU = NewDef; CurSU = NewDef;
} }
if (!CurSU) { assert(CurSU && "Unable to resolve live physical register dependencies!");
assert(false && "Unable to resolve live physical register dependencies!");
abort();
}
} }
// Add the nodes that aren't ready back onto the available list. // Add the nodes that aren't ready back onto the available list.
@ -785,7 +777,7 @@ void ScheduleDAGRRList::ListScheduleBottomUp() {
/// ReleaseSucc - Decrement the NumPredsLeft count of a successor. Add it to /// ReleaseSucc - Decrement the NumPredsLeft count of a successor. Add it to
/// the AvailableQueue if the count reaches zero. Also update its cycle bound. /// the AvailableQueue if the count reaches zero. Also update its cycle bound.
void ScheduleDAGRRList::ReleaseSucc(SUnit *SU, SDep *SuccEdge) { void ScheduleDAGRRList::ReleaseSucc(SUnit *SU, const SDep *SuccEdge) {
SUnit *SuccSU = SuccEdge->getSUnit(); SUnit *SuccSU = SuccEdge->getSUnit();
--SuccSU->NumPredsLeft; --SuccSU->NumPredsLeft;