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Eliminate MachineBasicBlock::const_livein_iterator and make

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MachineBasicBlock::livein_iterator a const_iterator, because
clients shouldn't ever be using the iterator interface to
mutate the livein set.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101147 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman 2010-04-13 16:57:55 +00:00
parent 9e9aa44d1a
commit 81bf03eb5c
8 changed files with 14 additions and 16 deletions
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9
include/llvm/CodeGen/MachineBasicBlock.h
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@ -201,12 +201,9 @@ public:
// Iteration support for live in sets. These sets are kept in sorted
// order by their register number.
typedef std::vector<unsigned>::iterator livein_iterator;
typedef std::vector<unsigned>::const_iterator const_livein_iterator;
livein_iterator livein_begin() { return LiveIns.begin(); }
const_livein_iterator livein_begin() const { return LiveIns.begin(); }
livein_iterator livein_end() { return LiveIns.end(); }
const_livein_iterator livein_end() const { return LiveIns.end(); }
typedef std::vector<unsigned>::const_iterator livein_iterator;
livein_iterator livein_begin() const { return LiveIns.begin(); }
livein_iterator livein_end() const { return LiveIns.end(); }
bool livein_empty() const { return LiveIns.empty(); }
/// getAlignment - Return alignment of the basic block.

2
lib/CodeGen/LiveIntervalAnalysis.cpp
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@ -668,7 +668,7 @@ void LiveIntervals::computeIntervals() {
DEBUG(dbgs() << MBB->getName() << ":\n");
// Create intervals for live-ins to this BB first.
for (MachineBasicBlock::const_livein_iterator LI = MBB->livein_begin(),
for (MachineBasicBlock::livein_iterator LI = MBB->livein_begin(),
LE = MBB->livein_end(); LI != LE; ++LI) {
handleLiveInRegister(MBB, MIIndex, getOrCreateInterval(*LI));
// Multiple live-ins can alias the same register.

2
lib/CodeGen/LiveVariables.cpp
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@ -531,7 +531,7 @@ bool LiveVariables::runOnMachineFunction(MachineFunction &mf) {
// Mark live-in registers as live-in.
SmallVector<unsigned, 4> Defs;
for (MachineBasicBlock::const_livein_iterator II = MBB->livein_begin(),
for (MachineBasicBlock::livein_iterator II = MBB->livein_begin(),
EE = MBB->livein_end(); II != EE; ++II) {
assert(TargetRegisterInfo::isPhysicalRegister(*II) &&
"Cannot have a live-in virtual register!");

9
lib/CodeGen/MachineBasicBlock.cpp
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@ -191,7 +191,7 @@ void MachineBasicBlock::print(raw_ostream &OS) const {
const TargetRegisterInfo *TRI = MF->getTarget().getRegisterInfo();
if (!livein_empty()) {
OS << " Live Ins:";
for (const_livein_iterator I = livein_begin(),E = livein_end(); I != E; ++I)
for (livein_iterator I = livein_begin(),E = livein_end(); I != E; ++I)
OutputReg(OS, *I, TRI);
OS << '\n';
}
@ -218,13 +218,14 @@ void MachineBasicBlock::print(raw_ostream &OS) const {
}
void MachineBasicBlock::removeLiveIn(unsigned Reg) {
livein_iterator I = std::find(livein_begin(), livein_end(), Reg);
assert(I != livein_end() && "Not a live in!");
std::vector<unsigned>::iterator I =
std::find(LiveIns.begin(), LiveIns.end(), Reg);
assert(I != LiveIns.end() && "Not a live in!");
LiveIns.erase(I);
}
bool MachineBasicBlock::isLiveIn(unsigned Reg) const {
const_livein_iterator I = std::find(livein_begin(), livein_end(), Reg);
livein_iterator I = std::find(livein_begin(), livein_end(), Reg);
return I != livein_end();
}

2
lib/CodeGen/MachineLICM.cpp
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@ -360,7 +360,7 @@ void MachineLICM::HoistRegionPostRA(MachineDomTreeNode *N) {
// Conservatively treat live-in's as an external def.
// FIXME: That means a reload that're reused in successor block(s) will not
// be LICM'ed.
for (MachineBasicBlock::const_livein_iterator I = BB->livein_begin(),
for (MachineBasicBlock::livein_iterator I = BB->livein_begin(),
E = BB->livein_end(); I != E; ++I) {
unsigned Reg = *I;
++PhysRegDefs[Reg];

2
lib/CodeGen/MachineVerifier.cpp
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@ -470,7 +470,7 @@ MachineVerifier::visitMachineBasicBlockBefore(const MachineBasicBlock *MBB) {
}
regsLive.clear();
for (MachineBasicBlock::const_livein_iterator I = MBB->livein_begin(),
for (MachineBasicBlock::livein_iterator I = MBB->livein_begin(),
E = MBB->livein_end(); I != E; ++I) {
if (!TargetRegisterInfo::isPhysicalRegister(*I)) {
report("MBB live-in list contains non-physical register", MBB);

2
lib/CodeGen/RegisterScavenging.cpp
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@ -64,7 +64,7 @@ void RegScavenger::initRegState() {
return;
// Live-in registers are in use.
for (MachineBasicBlock::const_livein_iterator I = MBB->livein_begin(),
for (MachineBasicBlock::livein_iterator I = MBB->livein_begin(),
E = MBB->livein_end(); I != E; ++I)
setUsed(*I);

2
lib/Target/X86/SSEDomainFix.cpp
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@ -270,7 +270,7 @@ bool SSEDomainFixPass::Merge(DomainValue *A, DomainValue *B) {
void SSEDomainFixPass::enterBasicBlock() {
// Try to coalesce live-out registers from predecessors.
for (MachineBasicBlock::const_livein_iterator i = MBB->livein_begin(),
for (MachineBasicBlock::livein_iterator i = MBB->livein_begin(),
e = MBB->livein_end(); i != e; ++i) {
int rx = RegIndex(*i);
if (rx < 0) continue;