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Revert the kludge in 76703. I got a clean

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bootstrap of FSF-style PPC, so there is some
reason to believe the original bug (which was
never analyzed) has been fixed, probably by
82266.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83871 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dale Johannesen
2009-10-12 18:49:00 +00:00
parent c1deda50ca
commit 3a6b9eb868
4 changed files with 25 additions and 36 deletions
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lib/CodeGen/TargetInstrInfoImpl.cpp
-21
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@@ -143,27 +143,6 @@ void TargetInstrInfoImpl::reMaterialize(MachineBasicBlock &MBB,
MBB.insert(I, MI);
}
bool TargetInstrInfoImpl::isDeadInstruction(const MachineInstr *MI) const {
const TargetInstrDesc &TID = MI->getDesc();
if (TID.mayLoad() || TID.mayStore() || TID.isCall() || TID.isTerminator() ||
TID.isCall() || TID.isBarrier() || TID.isReturn() ||
TID.hasUnmodeledSideEffects())
return false;
for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) {
const MachineOperand &MO = MI->getOperand(i);
if (!MO.isReg() || !MO.getReg())
continue;
if (MO.isDef() && !MO.isDead())
return false;
if (MO.isUse() && MO.isKill())
// FIXME: We can't remove kill markers or else the scavenger will assert.
// An alternative is to add a ADD pseudo instruction to replace kill
// markers.
return false;
}
return true;
}
unsigned
TargetInstrInfoImpl::GetFunctionSizeInBytes(const MachineFunction &MF) const {
unsigned FnSize = 0;