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Tweak debugging output.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146264 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jakob Stoklund Olesen 2011-12-09 18:20:35 +00:00
parent 94c2e85bea
commit 3c4615eef2
1 changed files with 28 additions and 20 deletions
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48
lib/Target/ARM/ARMConstantIslandPass.cpp
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@ -312,7 +312,7 @@ void ARMConstantIslands::verify(MachineFunction &MF) {
/// print block size and offset information - debugging
void ARMConstantIslands::dumpBBs() {
for (unsigned J = 0, E = BBInfo.size(); J !=E; ++J) {
DEBUG(errs() << "block " << J << " offset " << BBInfo[J].Offset
DEBUG(dbgs() << "block " << J << " offset " << BBInfo[J].Offset
<< " size " << BBInfo[J].Size << "\n");
}
}
@ -386,6 +386,7 @@ bool ARMConstantIslands::runOnMachineFunction(MachineFunction &MF) {
// is no change.
unsigned NoCPIters = 0, NoBRIters = 0;
while (true) {
DEBUG(dbgs() << "Beginning CP iteration #" << NoCPIters << '\n');
bool CPChange = false;
for (unsigned i = 0, e = CPUsers.size(); i != e; ++i)
CPChange |= HandleConstantPoolUser(MF, i);
@ -397,6 +398,7 @@ bool ARMConstantIslands::runOnMachineFunction(MachineFunction &MF) {
// appear as "new water" for the next iteration of constant pool placement.
NewWaterList.clear();
DEBUG(dbgs() << "Beginning BR iteration #" << NoBRIters << '\n');
bool BRChange = false;
for (unsigned i = 0, e = ImmBranches.size(); i != e; ++i)
BRChange |= FixUpImmediateBr(MF, ImmBranches[i]);
@ -429,7 +431,7 @@ bool ARMConstantIslands::runOnMachineFunction(MachineFunction &MF) {
}
}
DEBUG(errs() << '\n'; dumpBBs());
DEBUG(dbgs() << '\n'; dumpBBs());
BBInfo.clear();
WaterList.clear();
@ -475,7 +477,7 @@ void ARMConstantIslands::DoInitialPlacement(MachineFunction &MF,
CPEs.push_back(CPEntry(CPEMI, i));
CPEntries.push_back(CPEs);
++NumCPEs;
DEBUG(errs() << "Moved CPI#" << i << " to end of function as #" << i
DEBUG(dbgs() << "Moved CPI#" << i << " to end of function as #" << i
<< "\n");
}
}
@ -904,11 +906,17 @@ bool ARMConstantIslands::CPEIsInRange(MachineInstr *MI, unsigned UserOffset,
assert(CPEOffset % 4 == 0 && "Misaligned CPE");
if (DoDump) {
DEBUG(errs() << "User of CPE#" << CPEMI->getOperand(0).getImm()
<< " max delta=" << MaxDisp
<< " insn address=" << UserOffset
<< " CPE address=" << CPEOffset
<< " offset=" << int(CPEOffset-UserOffset) << "\t" << *MI);
DEBUG({
unsigned Block = MI->getParent()->getNumber();
const BasicBlockInfo &BBI = BBInfo[Block];
dbgs() << "User of CPE#" << CPEMI->getOperand(0).getImm()
<< " max delta=" << MaxDisp
<< " insn address=" << UserOffset
<< " in BB#" << Block << ": "
<< BBI.Offset << " - " << BBI.postOffset() << "\t" << *MI
<< "CPE address=" << CPEOffset
<< " offset=" << int(CPEOffset-UserOffset) << ": ";
});
}
return OffsetIsInRange(UserOffset, CPEOffset, MaxDisp, NegOk);
@ -981,7 +989,7 @@ int ARMConstantIslands::LookForExistingCPEntry(CPUser& U, unsigned UserOffset)
// Check to see if the CPE is already in-range.
if (CPEIsInRange(UserMI, UserOffset, CPEMI, U.MaxDisp, U.NegOk, true)) {
DEBUG(errs() << "In range\n");
DEBUG(dbgs() << "In range\n");
return 1;
}
@ -996,7 +1004,7 @@ int ARMConstantIslands::LookForExistingCPEntry(CPUser& U, unsigned UserOffset)
if (CPEs[i].CPEMI == NULL)
continue;
if (CPEIsInRange(UserMI, UserOffset, CPEs[i].CPEMI, U.MaxDisp, U.NegOk)) {
DEBUG(errs() << "Replacing CPE#" << CPI << " with CPE#"
DEBUG(dbgs() << "Replacing CPE#" << CPI << " with CPE#"
<< CPEs[i].CPI << "\n");
// Point the CPUser node to the replacement
U.CPEMI = CPEs[i].CPEMI;
@ -1107,7 +1115,7 @@ void ARMConstantIslands::CreateNewWater(unsigned CPUserIndex,
if (BBHasFallthrough(UserMBB) &&
OffsetIsInRange(UserOffset, OffsetOfNextBlock + (isThumb1 ? 2: 4),
U.MaxDisp, U.NegOk, U.IsSoImm)) {
DEBUG(errs() << "Split at end of block\n");
DEBUG(dbgs() << "Split at end of block\n");
if (&UserMBB->back() == UserMI)
assert(BBHasFallthrough(UserMBB) && "Expected a fallthrough BB!");
NewMBB = llvm::next(MachineFunction::iterator(UserMBB));
@ -1182,7 +1190,7 @@ void ARMConstantIslands::CreateNewWater(unsigned CPUserIndex,
LastIT = MI;
}
DEBUG(errs() << "Split in middle of big block\n");
DEBUG(dbgs() << "Split in middle of big block\n");
--MI;
// Avoid splitting an IT block.
@ -1226,7 +1234,7 @@ bool ARMConstantIslands::HandleConstantPoolUser(MachineFunction &MF,
MachineBasicBlock *NewMBB;
water_iterator IP;
if (LookForWater(U, UserOffset, IP)) {
DEBUG(errs() << "found water in range\n");
DEBUG(dbgs() << "Found water in range\n");
MachineBasicBlock *WaterBB = *IP;
// If the original WaterList entry was "new water" on this iteration,
@ -1241,7 +1249,7 @@ bool ARMConstantIslands::HandleConstantPoolUser(MachineFunction &MF,
} else {
// No water found.
DEBUG(errs() << "No water found\n");
DEBUG(dbgs() << "No water found\n");
CreateNewWater(CPUserIndex, UserOffset, NewMBB);
// SplitBlockBeforeInstr adds to WaterList, which is important when it is
@ -1296,8 +1304,8 @@ bool ARMConstantIslands::HandleConstantPoolUser(MachineFunction &MF,
break;
}
DEBUG(errs() << " Moved CPE to #" << ID << " CPI=" << CPI
<< '\t' << *UserMI);
DEBUG(dbgs() << " Moved CPE to #" << ID << " CPI=" << CPI
<< '\t' << *UserMI);
return true;
}
@ -1356,7 +1364,7 @@ bool ARMConstantIslands::BBIsInRange(MachineInstr *MI,MachineBasicBlock *DestBB,
unsigned BrOffset = GetOffsetOf(MI) + PCAdj;
unsigned DestOffset = BBInfo[DestBB->getNumber()].Offset;
DEBUG(errs() << "Branch of destination BB#" << DestBB->getNumber()
DEBUG(dbgs() << "Branch of destination BB#" << DestBB->getNumber()
<< " from BB#" << MI->getParent()->getNumber()
<< " max delta=" << MaxDisp
<< " from " << GetOffsetOf(MI) << " to " << DestOffset
@ -1407,7 +1415,7 @@ ARMConstantIslands::FixUpUnconditionalBr(MachineFunction &MF, ImmBranch &Br) {
HasFarJump = true;
++NumUBrFixed;
DEBUG(errs() << " Changed B to long jump " << *MI);
DEBUG(dbgs() << " Changed B to long jump " << *MI);
return true;
}
@ -1451,7 +1459,7 @@ ARMConstantIslands::FixUpConditionalBr(MachineFunction &MF, ImmBranch &Br) {
// b L1
MachineBasicBlock *NewDest = BMI->getOperand(0).getMBB();
if (BBIsInRange(MI, NewDest, Br.MaxDisp)) {
DEBUG(errs() << " Invert Bcc condition and swap its destination with "
DEBUG(dbgs() << " Invert Bcc condition and swap its destination with "
<< *BMI);
BMI->getOperand(0).setMBB(DestBB);
MI->getOperand(0).setMBB(NewDest);
@ -1472,7 +1480,7 @@ ARMConstantIslands::FixUpConditionalBr(MachineFunction &MF, ImmBranch &Br) {
}
MachineBasicBlock *NextBB = llvm::next(MachineFunction::iterator(MBB));
DEBUG(errs() << " Insert B to BB#" << DestBB->getNumber()
DEBUG(dbgs() << " Insert B to BB#" << DestBB->getNumber()
<< " also invert condition and change dest. to BB#"
<< NextBB->getNumber() << "\n");