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Eliminate VarInfo::UsedBlocks.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72411 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2009-05-26 06:25:46 +00:00
parent ab9cf1282b
commit aed4a430f4
4 changed files with 0 additions and 17 deletions
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4
include/llvm/CodeGen/LiveVariables.h
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@ -77,10 +77,6 @@ public:
///
BitVector AliveBlocks;
/// UsedBlocks - Set of blocks in which this value is actually used. This
/// is a bit set which uses the basic block number as an index.
BitVector UsedBlocks;
/// NumUses - Number of uses of this register across the entire function.
///
unsigned NumUses;

5
lib/CodeGen/LiveVariables.cpp
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@ -54,9 +54,6 @@ void LiveVariables::VarInfo::dump() const {
cerr << " Alive in blocks: ";
for (int i = AliveBlocks.find_first(); i != -1; i = AliveBlocks.find_next(i))
cerr << i << ", ";
cerr << " Used in blocks: ";
for (int i = UsedBlocks.find_first(); i != -1; i = UsedBlocks.find_next(i))
cerr << i << ", ";
cerr << "\n Killed by:";
if (Kills.empty())
cerr << " No instructions.\n";
@ -80,7 +77,6 @@ LiveVariables::VarInfo &LiveVariables::getVarInfo(unsigned RegIdx) {
}
VarInfo &VI = VirtRegInfo[RegIdx];
VI.AliveBlocks.resize(MF->getNumBlockIDs());
VI.UsedBlocks.resize(MF->getNumBlockIDs());
return VI;
}
@ -131,7 +127,6 @@ void LiveVariables::HandleVirtRegUse(unsigned reg, MachineBasicBlock *MBB,
unsigned BBNum = MBB->getNumber();
VarInfo& VRInfo = getVarInfo(reg);
VRInfo.UsedBlocks[BBNum] = true;
VRInfo.NumUses++;
// Check to see if this basic block is already a kill block.

3
lib/CodeGen/PHIElimination.cpp
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@ -249,8 +249,6 @@ void PNE::LowerAtomicPHINode(MachineBasicBlock &MBB,
// each for each incoming block), the "def" block and instruction fields
// for the VarInfo is not filled in.
LV->addVirtualRegisterKilled(IncomingReg, PHICopy);
LV->getVarInfo(IncomingReg).UsedBlocks[MBB.getNumber()] = true;
}
// Since we are going to be deleting the PHI node, if it is the last use of
@ -317,7 +315,6 @@ void PNE::LowerAtomicPHINode(MachineBasicBlock &MBB,
// variables information so that it knows the copy source instruction kills
// the incoming value.
LiveVariables::VarInfo &InRegVI = LV->getVarInfo(SrcReg);
InRegVI.UsedBlocks[opBlock.getNumber()] = true;
// Loop over all of the successors of the basic block, checking to see if
// the value is either live in the block, or if it is killed in the block.

5
lib/CodeGen/TwoAddressInstructionPass.cpp
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@ -955,11 +955,6 @@ bool TwoAddressInstructionPass::runOnMachineFunction(MachineFunction &MF) {
// Update live variables for regB.
if (LV) {
LiveVariables::VarInfo& varInfoB = LV->getVarInfo(regB);
// regB is used in this BB.
varInfoB.UsedBlocks[mbbi->getNumber()] = true;
if (LV->removeVirtualRegisterKilled(regB, mi))
LV->addVirtualRegisterKilled(regB, prevMI);