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Simplify the interface to LiveVariables::addVirtualRegister(Killed|Dead)

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14997 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2004-07-19 06:55:21 +00:00
parent 73d4adfb1e
commit 472405e0dc
5 changed files with 14 additions and 17 deletions
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12
include/llvm/CodeGen/LiveVariables.h
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@ -151,11 +151,9 @@ public:
/// specified register is killed after being used by the specified
/// instruction.
///
void addVirtualRegisterKilled(unsigned IncomingReg,
MachineBasicBlock *MBB,
MachineInstr *MI) {
void addVirtualRegisterKilled(unsigned IncomingReg, MachineInstr *MI) {
RegistersKilled.insert(std::make_pair(MI, IncomingReg));
getVarInfo(IncomingReg).Kills.push_back(std::make_pair(MBB, MI));
getVarInfo(IncomingReg).Kills.push_back(std::make_pair(MI->getParent(),MI));
}
/// removeVirtualRegisterKilled - Remove the specified virtual
@ -189,11 +187,9 @@ public:
/// addVirtualRegisterDead - Add information about the fact that the specified
/// register is dead after being used by the specified instruction.
///
void addVirtualRegisterDead(unsigned IncomingReg,
MachineBasicBlock *MBB,
MachineInstr *MI) {
void addVirtualRegisterDead(unsigned IncomingReg, MachineInstr *MI) {
RegistersDead.insert(std::make_pair(MI, IncomingReg));
getVarInfo(IncomingReg).Kills.push_back(std::make_pair(MBB, MI));
getVarInfo(IncomingReg).Kills.push_back(std::make_pair(MI->getParent(),MI));
}
/// removeVirtualRegisterDead - Remove the specified virtual

2
lib/CodeGen/LiveIntervalAnalysis.cpp
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@ -263,7 +263,7 @@ std::vector<LiveInterval*> LiveIntervals::addIntervalsForSpills(
nI.addRange(start, end);
added.push_back(&nI);
// update live variables
lv_->addVirtualRegisterKilled(nReg, mi->getParent(),mi);
lv_->addVirtualRegisterKilled(nReg, mi);
DEBUG(std::cerr << "\t\t\t\tadded new interval: "
<< nI << '\n');
}

5
lib/CodeGen/LiveVariables.cpp
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@ -99,7 +99,7 @@ void LiveVariables::HandleVirtRegUse(VarInfo &VRInfo, MachineBasicBlock *MBB,
"Should have kill for defblock!");
// Add a new kill entry for this basic block.
VRInfo.Kills.push_back(std::make_pair(MBB, MI));
VRInfo.Kills.push_back(std::make_pair(MI->getParent(), MI));
// Update all dominating blocks to mark them known live.
const BasicBlock *BB = MBB->getBasicBlock();
@ -233,7 +233,8 @@ bool LiveVariables::runOnMachineFunction(MachineFunction &MF) {
assert(VRInfo.DefInst == 0 && "Variable multiply defined!");
VRInfo.DefInst = MI;
VRInfo.Kills.push_back(std::make_pair(MBB, MI)); // Defaults to dead
// Defaults to dead
VRInfo.Kills.push_back(std::make_pair(MI->getParent(), MI));
} else if (MRegisterInfo::isPhysicalRegister(MO.getReg()) &&
AllocatablePhysicalRegisters[MO.getReg()]) {
HandlePhysRegDef(MO.getReg(), MI);

8
lib/CodeGen/PHIElimination.cpp
View File

@ -122,7 +122,7 @@ bool PNE::EliminatePHINodes(MachineFunction &MF, MachineBasicBlock &MBB) {
// each for each incoming block), the "def" block and instruction fields
// for the VarInfo is not filled in.
//
LV->addVirtualRegisterKilled(IncomingReg, &MBB, PHICopy);
LV->addVirtualRegisterKilled(IncomingReg, PHICopy);
// Since we are going to be deleting the PHI node, if it is the last use
// of any registers, or if the value itself is dead, we need to move this
@ -140,7 +140,7 @@ bool PNE::EliminatePHINodes(MachineFunction &MF, MachineBasicBlock &MBB) {
// Add all of the kills back, which will update the appropriate info...
for (unsigned i = 0, e = Range.size(); i != e; ++i)
LV->addVirtualRegisterKilled(Range[i].second, &MBB, PHICopy);
LV->addVirtualRegisterKilled(Range[i].second, PHICopy);
}
RKs = LV->dead_range(MI);
@ -149,7 +149,7 @@ bool PNE::EliminatePHINodes(MachineFunction &MF, MachineBasicBlock &MBB) {
Range.assign(RKs.first, RKs.second);
LV->removeVirtualRegistersDead(RKs.first, RKs.second);
for (unsigned i = 0, e = Range.size(); i != e; ++i)
LV->addVirtualRegisterDead(Range[i].second, &MBB, PHICopy);
LV->addVirtualRegisterDead(Range[i].second, PHICopy);
}
}
@ -251,7 +251,7 @@ bool PNE::EliminatePHINodes(MachineFunction &MF, MachineBasicBlock &MBB) {
//
if (!ValueIsLive) {
MachineBasicBlock::iterator Prev = prior(I);
LV->addVirtualRegisterKilled(SrcReg, &opBlock, Prev);
LV->addVirtualRegisterKilled(SrcReg, Prev);
}
}
}

4
lib/CodeGen/TwoAddressInstructionPass.cpp
View File

@ -151,10 +151,10 @@ bool TwoAddressInstructionPass::runOnMachineFunction(MachineFunction &MF) {
// update live variables for regB
if (LV->removeVirtualRegisterKilled(regB, &*mbbi, mi))
LV->addVirtualRegisterKilled(regB, &*mbbi, prevMi);
LV->addVirtualRegisterKilled(regB, prevMi);
if (LV->removeVirtualRegisterDead(regB, &*mbbi, mi))
LV->addVirtualRegisterDead(regB, &*mbbi, prevMi);
LV->addVirtualRegisterDead(regB, prevMi);
}
// replace all occurences of regB with regA