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Remove ancient references to 'atomic' phis in PHIElimination that don't really
make sense anymore. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174829 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -58,8 +58,8 @@ namespace {
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/// in predecessor basic blocks.
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///
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bool EliminatePHINodes(MachineFunction &MF, MachineBasicBlock &MBB);
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void LowerAtomicPHINode(MachineBasicBlock &MBB,
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MachineBasicBlock::iterator AfterPHIsIt);
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void LowerPHINode(MachineBasicBlock &MBB,
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MachineBasicBlock::iterator AfterPHIsIt);
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/// analyzePHINodes - Gather information about the PHI nodes in
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/// here. In particular, we want to map the number of uses of a virtual
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@ -88,7 +88,7 @@ namespace {
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};
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}
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STATISTIC(NumAtomic, "Number of atomic phis lowered");
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STATISTIC(NumLowered, "Number of phis lowered");
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STATISTIC(NumCriticalEdgesSplit, "Number of critical edges split");
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STATISTIC(NumReused, "Number of reused lowered phis");
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@ -166,7 +166,7 @@ bool PHIElimination::EliminatePHINodes(MachineFunction &MF,
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MachineBasicBlock::iterator AfterPHIsIt = MBB.SkipPHIsAndLabels(MBB.begin());
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while (MBB.front().isPHI())
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LowerAtomicPHINode(MBB, AfterPHIsIt);
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LowerPHINode(MBB, AfterPHIsIt);
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return true;
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}
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@ -193,15 +193,11 @@ static bool isSourceDefinedByImplicitDef(const MachineInstr *MPhi,
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}
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/// LowerAtomicPHINode - Lower the PHI node at the top of the specified block,
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/// under the assumption that it needs to be lowered in a way that supports
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/// atomic execution of PHIs. This lowering method is always correct all of the
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/// time.
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/// LowerPHINode - Lower the PHI node at the top of the specified block,
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///
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void PHIElimination::LowerAtomicPHINode(
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MachineBasicBlock &MBB,
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MachineBasicBlock::iterator AfterPHIsIt) {
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++NumAtomic;
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void PHIElimination::LowerPHINode(MachineBasicBlock &MBB,
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MachineBasicBlock::iterator AfterPHIsIt) {
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++NumLowered;
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// Unlink the PHI node from the basic block, but don't delete the PHI yet.
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MachineInstr *MPhi = MBB.remove(MBB.begin());
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