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Add more debug output to MachineTraceMetrics.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160905 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jakob Stoklund Olesen 2012-07-27 23:58:38 +00:00
parent 0271a5fa29
commit 08f6ef6a78
3 changed files with 48 additions and 3 deletions
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6
lib/CodeGen/EarlyIfConversion.cpp
View File

@ -590,6 +590,7 @@ void EarlyIfConverter::invalidateTraces() {
Traces->invalidate(IfConv.Tail);
Traces->invalidate(IfConv.TBB);
Traces->invalidate(IfConv.FBB);
DEBUG(if (MinInstr) MinInstr->print(dbgs()));
}
/// Apply cost model and heuristics to the if-conversion in IfConv.
@ -598,7 +599,10 @@ void EarlyIfConverter::invalidateTraces() {
bool EarlyIfConverter::shouldConvertIf() {
if (!MinInstr)
MinInstr = Traces->getEnsemble(MachineTraceMetrics::TS_MinInstrCount);
DEBUG(dbgs() << MinInstr->getTrace(IfConv.Head));
DEBUG({
dbgs() << MinInstr->getTrace(IfConv.Head);
MinInstr->print(dbgs());
});
return true;
}

33
lib/CodeGen/MachineTraceMetrics.cpp
View File

@ -211,7 +211,7 @@ getHeightResources(const MachineBasicBlock *MBB) const {
// instructions.
namespace {
class MinInstrCountEnsemble : public MachineTraceMetrics::Ensemble {
const char *getName() { return "MinInstr"; }
const char *getName() const { return "MinInstr"; }
const MachineBasicBlock *pickTracePred(const MachineBasicBlock*);
const MachineBasicBlock *pickTraceSucc(const MachineBasicBlock*);
@ -458,6 +458,37 @@ MachineTraceMetrics::Ensemble::getTrace(const MachineBasicBlock *MBB) {
return Trace(*this, BlockInfo[MBB->getNumber()]);
}
void MachineTraceMetrics::Ensemble::print(raw_ostream &OS) const {
OS << getName() << " ensemble:\n";
for (unsigned i = 0, e = BlockInfo.size(); i != e; ++i) {
OS << " BB#" << i << '\t';
BlockInfo[i].print(OS);
OS << '\n';
}
}
void MachineTraceMetrics::TraceBlockInfo::print(raw_ostream &OS) const {
if (hasValidDepth()) {
OS << "depth=" << InstrDepth;
if (Pred)
OS << " pred=BB#" << Pred->getNumber();
else
OS << " pred=null";
OS << " head=BB#" << Head;
} else
OS << "depth invalid";
OS << ", ";
if (hasValidHeight()) {
OS << "height=" << InstrHeight;
if (Succ)
OS << " succ=BB#" << Succ->getNumber();
else
OS << " succ=null";
OS << " tail=BB#" << Tail;
} else
OS << "height invalid";
}
void MachineTraceMetrics::Trace::print(raw_ostream &OS) const {
unsigned MBBNum = &TBI - &TE.BlockInfo[0];

12
lib/CodeGen/MachineTraceMetrics.h
View File

@ -105,9 +105,11 @@ public:
/// block in a trace ensemble.
struct TraceBlockInfo {
/// Trace predecessor, or NULL for the first block in the trace.
/// Valid when hasValidDepth().
const MachineBasicBlock *Pred;
/// Trace successor, or NULL for the last block in the trace.
/// Valid when hasValidHeight().
const MachineBasicBlock *Succ;
/// The block number of the head of the trace. (When hasValidDepth()).
@ -139,6 +141,8 @@ public:
/// Invalidate height resources when a block below this one has changed.
void invalidateHeight() { InstrHeight = ~0u; }
void print(raw_ostream&) const;
};
/// A trace represents a plausible sequence of executed basic blocks that
@ -180,7 +184,8 @@ public:
public:
virtual ~Ensemble();
virtual const char *getName() =0;
virtual const char *getName() const =0;
void print(raw_ostream&) const;
void invalidate(const MachineBasicBlock *MBB);
/// Get the trace that passes through MBB.
@ -219,6 +224,11 @@ inline raw_ostream &operator<<(raw_ostream &OS,
return OS;
}
inline raw_ostream &operator<<(raw_ostream &OS,
const MachineTraceMetrics::Ensemble &En) {
En.print(OS);
return OS;
}
} // end namespace llvm
#endif