// Make sure the instructions have their operands in the reginfo lists.
MachineRegisterInfo &RegInfo = MF.getRegInfo();
- for (MachineBasicBlock::iterator I = N->begin(), E = N->end(); I != E; ++I)
+ for (MachineBasicBlock::insn_iterator I = N->insn_begin(), E = N->insn_end();
+ I != E; ++I)
I->AddRegOperandsToUseLists(RegInfo);
LeakDetector::removeGarbageObject(N);
/// lists.
void ilist_traits<MachineInstr>::
transferNodesFromList(ilist_traits<MachineInstr> &fromList,
- MachineBasicBlock::iterator first,
- MachineBasicBlock::iterator last) {
+ ilist_iterator<MachineInstr> first,
+ ilist_iterator<MachineInstr> last) {
assert(Parent->getParent() == fromList.Parent->getParent() &&
"MachineInstr parent mismatch!");
}
MachineBasicBlock::iterator MachineBasicBlock::getFirstNonPHI() {
- iterator I = begin();
+ insn_iterator I = insn_begin();
while (I != end() && I->isPHI())
++I;
+ assert(!I->isInsideBundle() && "First non-phi MI cannot be inside a bundle!");
return I;
}
MachineBasicBlock::SkipPHIsAndLabels(MachineBasicBlock::iterator I) {
while (I != end() && (I->isPHI() || I->isLabel() || I->isDebugValue()))
++I;
+ // FIXME: This needs to change if we wish to bundle labels / dbg_values
+ // inside the bundle.
+ assert(!I->isInsideBundle() &&
+ "First non-phi / non-label instruction is inside a bundle!");
return I;
}
MachineBasicBlock::iterator MachineBasicBlock::getFirstTerminator() {
iterator I = end();
- while (I != begin() && ((--I)->getDesc().isTerminator() || I->isDebugValue()))
+ while (I != begin() && ((--I)->isTerminator() || I->isDebugValue()))
; /*noop */
- while (I != end() && !I->getDesc().isTerminator())
+ while (I != end() && !I->isTerminator())
+ ++I;
+ return I;
+}
+
+MachineBasicBlock::const_iterator
+MachineBasicBlock::getFirstTerminator() const {
+ const_iterator I = end();
+ while (I != begin() && ((--I)->isTerminator() || I->isDebugValue()))
+ ; /*noop */
+ while (I != end() && !I->isTerminator())
+ ++I;
+ return I;
+}
+
+MachineBasicBlock::insn_iterator MachineBasicBlock::getFirstInsnTerminator() {
+ insn_iterator I = insn_end();
+ while (I != insn_begin() && ((--I)->isTerminator() || I->isDebugValue()))
+ ; /*noop */
+ while (I != insn_end() && !I->isTerminator())
++I;
return I;
}
MachineBasicBlock::iterator MachineBasicBlock::getLastNonDebugInstr() {
- iterator B = begin(), I = end();
+ // Skip over end-of-block dbg_value instructions.
+ insn_iterator B = insn_begin(), I = insn_end();
+ while (I != B) {
+ --I;
+ // Return instruction that starts a bundle.
+ if (I->isDebugValue() || I->isInsideBundle())
+ continue;
+ return I;
+ }
+ // The block is all debug values.
+ return end();
+}
+
+MachineBasicBlock::const_iterator
+MachineBasicBlock::getLastNonDebugInstr() const {
+ // Skip over end-of-block dbg_value instructions.
+ const_insn_iterator B = insn_begin(), I = insn_end();
while (I != B) {
--I;
- if (I->isDebugValue())
+ // Return instruction that starts a bundle.
+ if (I->isDebugValue() || I->isInsideBundle())
continue;
return I;
}
return;
}
- if (Alignment) { OS << "Alignment " << Alignment << "\n"; }
-
if (Indexes)
OS << Indexes->getMBBStartIdx(this) << '\t';
}
if (isLandingPad()) { OS << Comma << "EH LANDING PAD"; Comma = ", "; }
if (hasAddressTaken()) { OS << Comma << "ADDRESS TAKEN"; Comma = ", "; }
+ if (Alignment) {
+ OS << Comma << "Align " << Alignment << " (" << (1u << Alignment)
+ << " bytes)";
+ Comma = ", ";
+ }
+
OS << '\n';
const TargetRegisterInfo *TRI = MF->getTarget().getRegisterInfo();
TII->RemoveBranch(*this);
} else {
// The block has an unconditional fallthrough. If its successor is not
- // its layout successor, insert a branch.
- TBB = *succ_begin();
+ // its layout successor, insert a branch. First we have to locate the
+ // only non-landing-pad successor, as that is the fallthrough block.
+ for (succ_iterator SI = succ_begin(), SE = succ_end(); SI != SE; ++SI) {
+ if ((*SI)->isLandingPad())
+ continue;
+ assert(!TBB && "Found more than one non-landing-pad successor!");
+ TBB = *SI;
+ }
+
+ // If there is no non-landing-pad successor, the block has no
+ // fall-through edges to be concerned with.
+ if (!TBB)
+ return;
+
+ // Finally update the unconditional successor to be reached via a branch
+ // if it would not be reached by fallthrough.
if (!isLayoutSuccessor(TBB))
TII->InsertBranch(*this, TBB, 0, Cond, dl);
}
fromMBB->removeSuccessor(Succ);
// Fix up any PHI nodes in the successor.
- for (MachineBasicBlock::iterator MI = Succ->begin(), ME = Succ->end();
- MI != ME && MI->isPHI(); ++MI)
+ for (MachineBasicBlock::insn_iterator MI = Succ->insn_begin(),
+ ME = Succ->insn_end(); MI != ME && MI->isPHI(); ++MI)
for (unsigned i = 2, e = MI->getNumOperands()+1; i != e; i += 2) {
MachineOperand &MO = MI->getOperand(i);
if (MO.getMBB() == fromMBB)
// Barrier is predicated and thus no longer an actual control barrier. This
// is over-conservative though, because if an instruction isn't actually
// predicated we could still treat it like a barrier.
- return empty() || !back().getDesc().isBarrier() ||
- back().getDesc().isPredicable();
+ return empty() || !back().isBarrier() ||
+ back().isPredicable();
}
// If there is no branch, control always falls through.
// Collect a list of virtual registers killed by the terminators.
SmallVector<unsigned, 4> KilledRegs;
if (LV)
- for (iterator I = getFirstTerminator(), E = end(); I != E; ++I) {
+ for (insn_iterator I = getFirstInsnTerminator(), E = insn_end();
+ I != E; ++I) {
MachineInstr *MI = I;
for (MachineInstr::mop_iterator OI = MI->operands_begin(),
OE = MI->operands_end(); OI != OE; ++OI) {
}
// Fix PHI nodes in Succ so they refer to NMBB instead of this
- for (MachineBasicBlock::iterator i = Succ->begin(), e = Succ->end();
- i != e && i->isPHI(); ++i)
+ for (MachineBasicBlock::insn_iterator
+ i = Succ->insn_begin(),e = Succ->insn_end(); i != e && i->isPHI(); ++i)
for (unsigned ni = 1, ne = i->getNumOperands(); ni != ne; ni += 2)
if (i->getOperand(ni+1).getMBB() == this)
i->getOperand(ni+1).setMBB(NMBB);
// Restore kills of virtual registers that were killed by the terminators.
while (!KilledRegs.empty()) {
unsigned Reg = KilledRegs.pop_back_val();
- for (iterator I = end(), E = begin(); I != E;) {
+ for (insn_iterator I = insn_end(), E = insn_begin(); I != E;) {
if (!(--I)->addRegisterKilled(Reg, NULL, /* addIfNotFound= */ false))
continue;
LV->getVarInfo(Reg).Kills.push_back(I);
MachineBasicBlock *New) {
assert(Old != New && "Cannot replace self with self!");
- MachineBasicBlock::iterator I = end();
- while (I != begin()) {
+ MachineBasicBlock::insn_iterator I = insn_end();
+ while (I != insn_begin()) {
--I;
- if (!I->getDesc().isTerminator()) break;
+ if (!I->isTerminator()) break;
// Scan the operands of this machine instruction, replacing any uses of Old
// with New.
/// findDebugLoc - find the next valid DebugLoc starting at MBBI, skipping
/// any DBG_VALUE instructions. Return UnknownLoc if there is none.
DebugLoc
-MachineBasicBlock::findDebugLoc(MachineBasicBlock::iterator &MBBI) {
+MachineBasicBlock::findDebugLoc(insn_iterator MBBI) {
DebugLoc DL;
- MachineBasicBlock::iterator E = end();
- if (MBBI != E) {
- // Skip debug declarations, we don't want a DebugLoc from them.
- MachineBasicBlock::iterator MBBI2 = MBBI;
- while (MBBI2 != E && MBBI2->isDebugValue())
- MBBI2++;
- if (MBBI2 != E)
- DL = MBBI2->getDebugLoc();
- }
+ insn_iterator E = insn_end();
+ if (MBBI == E)
+ return DL;
+
+ // Skip debug declarations, we don't want a DebugLoc from them.
+ while (MBBI != E && MBBI->isDebugValue())
+ MBBI++;
+ if (MBBI != E)
+ DL = MBBI->getDebugLoc();
return DL;
}
projects / oota-llvm.git / blobdiff