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-rw-r--r--llvm/lib/CodeGen/ShrinkWrapping.cpp87
1 files changed, 44 insertions, 43 deletions
diff --git a/llvm/lib/CodeGen/ShrinkWrapping.cpp b/llvm/lib/CodeGen/ShrinkWrapping.cpp
index e44a138cf92..b1f56d52057 100644
--- a/llvm/lib/CodeGen/ShrinkWrapping.cpp
+++ b/llvm/lib/CodeGen/ShrinkWrapping.cpp
@@ -158,7 +158,7 @@ void PEI::initShrinkWrappingInfo() {
// via --shrink-wrap-func=<funcname>.
#ifndef NDEBUG
if (ShrinkWrapFunc != "") {
- std::string MFName = MF->getFunction()->getName();
+ std::string MFName = MF->getFunction()->getNameStr();
ShrinkWrapThisFunction = (MFName == ShrinkWrapFunc);
}
#endif
@@ -185,8 +185,8 @@ void PEI::placeCSRSpillsAndRestores(MachineFunction &Fn) {
initShrinkWrappingInfo();
DEBUG(if (ShrinkWrapThisFunction) {
- DOUT << "Place CSR spills/restores for "
- << MF->getFunction()->getName() << "\n";
+ errs() << "Place CSR spills/restores for "
+ << MF->getFunction()->getName() << "\n";
});
if (calculateSets(Fn))
@@ -357,8 +357,8 @@ bool PEI::calculateSets(MachineFunction &Fn) {
// If no CSRs used, we are done.
if (CSI.empty()) {
DEBUG(if (ShrinkWrapThisFunction)
- DOUT << "DISABLED: " << Fn.getFunction()->getName()
- << ": uses no callee-saved registers\n");
+ errs() << "DISABLED: " << Fn.getFunction()->getName()
+ << ": uses no callee-saved registers\n");
return false;
}
@@ -377,8 +377,8 @@ bool PEI::calculateSets(MachineFunction &Fn) {
// implementation to functions with <= 500 MBBs.
if (Fn.size() > 500) {
DEBUG(if (ShrinkWrapThisFunction)
- DOUT << "DISABLED: " << Fn.getFunction()->getName()
- << ": too large (" << Fn.size() << " MBBs)\n");
+ errs() << "DISABLED: " << Fn.getFunction()->getName()
+ << ": too large (" << Fn.size() << " MBBs)\n");
ShrinkWrapThisFunction = false;
}
@@ -459,7 +459,7 @@ bool PEI::calculateSets(MachineFunction &Fn) {
}
if (allCSRUsesInEntryBlock) {
- DEBUG(DOUT << "DISABLED: " << Fn.getFunction()->getName()
+ DEBUG(errs() << "DISABLED: " << Fn.getFunction()->getName()
<< ": all CSRs used in EntryBlock\n");
ShrinkWrapThisFunction = false;
} else {
@@ -471,7 +471,7 @@ bool PEI::calculateSets(MachineFunction &Fn) {
allCSRsUsedInEntryFanout = false;
}
if (allCSRsUsedInEntryFanout) {
- DEBUG(DOUT << "DISABLED: " << Fn.getFunction()->getName()
+ DEBUG(errs() << "DISABLED: " << Fn.getFunction()->getName()
<< ": all CSRs used in imm successors of EntryBlock\n");
ShrinkWrapThisFunction = false;
}
@@ -498,7 +498,7 @@ bool PEI::calculateSets(MachineFunction &Fn) {
if (dominatesExitNodes) {
CSRUsedInChokePoints |= CSRUsed[MBB];
if (CSRUsedInChokePoints == UsedCSRegs) {
- DEBUG(DOUT << "DISABLED: " << Fn.getFunction()->getName()
+ DEBUG(errs() << "DISABLED: " << Fn.getFunction()->getName()
<< ": all CSRs used in choke point(s) at "
<< getBasicBlockName(MBB) << "\n");
ShrinkWrapThisFunction = false;
@@ -514,16 +514,16 @@ bool PEI::calculateSets(MachineFunction &Fn) {
return false;
DEBUG({
- DOUT << "ENABLED: " << Fn.getFunction()->getName();
+ errs() << "ENABLED: " << Fn.getFunction()->getName();
if (HasFastExitPath)
- DOUT << " (fast exit path)";
- DOUT << "\n";
+ errs() << " (fast exit path)";
+ errs() << "\n";
if (ShrinkWrapDebugging >= BasicInfo) {
- DOUT << "------------------------------"
+ errs() << "------------------------------"
<< "-----------------------------\n";
- DOUT << "UsedCSRegs = " << stringifyCSRegSet(UsedCSRegs) << "\n";
+ errs() << "UsedCSRegs = " << stringifyCSRegSet(UsedCSRegs) << "\n";
if (ShrinkWrapDebugging >= Details) {
- DOUT << "------------------------------"
+ errs() << "------------------------------"
<< "-----------------------------\n";
dumpAllUsed();
}
@@ -596,7 +596,7 @@ bool PEI::addUsesForMEMERegion(MachineBasicBlock* MBB,
addedUses = true;
blks.push_back(SUCC);
DEBUG(if (ShrinkWrapDebugging >= Iterations)
- DOUT << getBasicBlockName(MBB)
+ errs() << getBasicBlockName(MBB)
<< "(" << stringifyCSRegSet(prop) << ")->"
<< "successor " << getBasicBlockName(SUCC) << "\n");
}
@@ -612,7 +612,7 @@ bool PEI::addUsesForMEMERegion(MachineBasicBlock* MBB,
addedUses = true;
blks.push_back(PRED);
DEBUG(if (ShrinkWrapDebugging >= Iterations)
- DOUT << getBasicBlockName(MBB)
+ errs() << getBasicBlockName(MBB)
<< "(" << stringifyCSRegSet(prop) << ")->"
<< "predecessor " << getBasicBlockName(PRED) << "\n");
}
@@ -650,7 +650,7 @@ bool PEI::addUsesForTopLevelLoops(SmallVector<MachineBasicBlock*, 4>& blks) {
CSRUsed[EXB] |= loopSpills;
addedUses = true;
DEBUG(if (ShrinkWrapDebugging >= Iterations)
- DOUT << "LOOP " << getBasicBlockName(MBB)
+ errs() << "LOOP " << getBasicBlockName(MBB)
<< "(" << stringifyCSRegSet(loopSpills) << ")->"
<< getBasicBlockName(EXB) << "\n");
if (EXB->succ_size() > 1 || EXB->pred_size() > 1)
@@ -717,7 +717,7 @@ bool PEI::calcSpillPlacements(MachineBasicBlock* MBB,
blks.push_back(MBB);
DEBUG(if (! CSRSave[MBB].empty() && ShrinkWrapDebugging >= Iterations)
- DOUT << "SAVE[" << getBasicBlockName(MBB) << "] = "
+ errs() << "SAVE[" << getBasicBlockName(MBB) << "] = "
<< stringifyCSRegSet(CSRSave[MBB]) << "\n");
return placedSpills;
@@ -778,7 +778,7 @@ bool PEI::calcRestorePlacements(MachineBasicBlock* MBB,
blks.push_back(MBB);
DEBUG(if (! CSRRestore[MBB].empty() && ShrinkWrapDebugging >= Iterations)
- DOUT << "RESTORE[" << getBasicBlockName(MBB) << "] = "
+ errs() << "RESTORE[" << getBasicBlockName(MBB) << "] = "
<< stringifyCSRegSet(CSRRestore[MBB]) << "\n");
return placedRestores;
@@ -802,7 +802,7 @@ void PEI::placeSpillsAndRestores(MachineFunction &Fn) {
++iterations;
DEBUG(if (ShrinkWrapDebugging >= Iterations)
- DOUT << "iter " << iterations
+ errs() << "iter " << iterations
<< " --------------------------------------------------\n");
// Calculate CSR{Save,Restore} sets using Antic, Avail on the MCFG,
@@ -852,15 +852,15 @@ void PEI::placeSpillsAndRestores(MachineFunction &Fn) {
unsigned numSRReducedThisFunc = notSpilledInEntryBlock.count();
numSRReduced += numSRReducedThisFunc;
DEBUG(if (ShrinkWrapDebugging >= BasicInfo) {
- DOUT << "-----------------------------------------------------------\n";
- DOUT << "total iterations = " << iterations << " ( "
+ errs() << "-----------------------------------------------------------\n";
+ errs() << "total iterations = " << iterations << " ( "
<< Fn.getFunction()->getName()
<< " " << numSRReducedThisFunc
<< " " << Fn.size()
<< " )\n";
- DOUT << "-----------------------------------------------------------\n";
+ errs() << "-----------------------------------------------------------\n";
dumpSRSets();
- DOUT << "-----------------------------------------------------------\n";
+ errs() << "-----------------------------------------------------------\n";
if (numSRReducedThisFunc)
verifySpillRestorePlacement();
});
@@ -893,7 +893,7 @@ void PEI::findFastExitPath() {
// Check the immediate successors.
if (isReturnBlock(SUCC)) {
if (ShrinkWrapDebugging >= BasicInfo)
- DOUT << "Fast exit path: " << getBasicBlockName(EntryBlock)
+ errs() << "Fast exit path: " << getBasicBlockName(EntryBlock)
<< "->" << getBasicBlockName(SUCC) << "\n";
break;
}
@@ -911,7 +911,7 @@ void PEI::findFastExitPath() {
}
if (HasFastExitPath) {
if (ShrinkWrapDebugging >= BasicInfo)
- DOUT << "Fast exit path: " << getBasicBlockName(EntryBlock)
+ errs() << "Fast exit path: " << getBasicBlockName(EntryBlock)
<< "->" << exitPath << "\n";
break;
}
@@ -977,11 +977,11 @@ void PEI::verifySpillRestorePlacement() {
if (isReturnBlock(SBB) || SBB->succ_size() == 0) {
if (restored != spilled) {
CSRegSet notRestored = (spilled - restored);
- DOUT << MF->getFunction()->getName() << ": "
- << stringifyCSRegSet(notRestored)
- << " spilled at " << getBasicBlockName(MBB)
- << " are never restored on path to return "
- << getBasicBlockName(SBB) << "\n";
+ DEBUG(errs() << MF->getFunction()->getName() << ": "
+ << stringifyCSRegSet(notRestored)
+ << " spilled at " << getBasicBlockName(MBB)
+ << " are never restored on path to return "
+ << getBasicBlockName(SBB) << "\n");
}
restored.clear();
}
@@ -1025,23 +1025,24 @@ void PEI::verifySpillRestorePlacement() {
}
if (spilled != restored) {
CSRegSet notSpilled = (restored - spilled);
- DOUT << MF->getFunction()->getName() << ": "
- << stringifyCSRegSet(notSpilled)
- << " restored at " << getBasicBlockName(MBB)
- << " are never spilled\n";
+ DEBUG(errs() << MF->getFunction()->getName() << ": "
+ << stringifyCSRegSet(notSpilled)
+ << " restored at " << getBasicBlockName(MBB)
+ << " are never spilled\n");
}
}
}
// Debugging print methods.
std::string PEI::getBasicBlockName(const MachineBasicBlock* MBB) {
+ if (!MBB)
+ return "";
+
+ if (MBB->getBasicBlock())
+ return MBB->getBasicBlock()->getNameStr();
+
std::ostringstream name;
- if (MBB) {
- if (MBB->getBasicBlock())
- name << MBB->getBasicBlock()->getName();
- else
- name << "_MBB_" << MBB->getNumber();
- }
+ name << "_MBB_" << MBB->getNumber();
return name.str();
}
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