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Simplify now that blocks with phis are not considered simple.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133793 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola 2011-06-24 14:04:13 +00:00
parent ce117be633
commit 1f71549a2e
1 changed files with 0 additions and 15 deletions
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15
lib/CodeGen/TailDuplication.cpp
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@ -659,21 +659,6 @@ TailDuplicatePass::duplicateSimpleBB(MachineBasicBlock *TailBB,
MachineBasicBlock *NewTarget = *TailBB->succ_begin();
MachineBasicBlock *NextBB = llvm::next(MachineFunction::iterator(PredBB));
DenseMap<unsigned, unsigned> LocalVRMap;
SmallVector<std::pair<unsigned,unsigned>, 4> CopyInfos;
for (MachineBasicBlock::iterator I = TailBB->begin();
I != TailBB->end() && I->isPHI();) {
MachineInstr *MI = &*I;
++I;
ProcessPHI(MI, TailBB, PredBB, LocalVRMap, CopyInfos, UsedByPhi, true);
}
MachineBasicBlock::iterator Loc = PredBB->getFirstTerminator();
for (unsigned i = 0, e = CopyInfos.size(); i != e; ++i) {
Copies.push_back(BuildMI(*PredBB, Loc, DebugLoc(),
TII->get(TargetOpcode::COPY),
CopyInfos[i].first).addReg(CopyInfos[i].second));
}
// Make PredFBB explicit.
if (PredCond.empty())
PredFBB = PredTBB;