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Viewing changes to lib/CodeGen/MachineCSE.cpp

  • Committer: Bazaar Package Importer
  • Author(s): Matthias Klose
  • Date: 2010-09-21 14:03:34 UTC
  • mfrom: (1.1.4 upstream)
  • Revision ID: james.westby@ubuntu.com-20100921140334-i4xxl0a768fcqffl
Tags: 2.8~20100921-0ubuntu1
New upstream snapshot, taken from the 2.8 branch.

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lib/CodeGen/MachineCSE.cpp
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      AU.addPreserved<MachineDominatorTree>();
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    }
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    virtual void releaseMemory() {
 
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      ScopeMap.clear();
 
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      Exps.clear();
 
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    }
 
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  private:
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    const unsigned LookAheadLimit;
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    typedef ScopedHashTableScope<MachineInstr*, unsigned,
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    unsigned Reg = MO.getReg();
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    if (!Reg || TargetRegisterInfo::isPhysicalRegister(Reg))
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      continue;
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    if (!MRI->hasOneUse(Reg))
 
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    if (!MRI->hasOneNonDBGUse(Reg))
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      // Only coalesce single use copies. This ensure the copy will be
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      // deleted.
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      continue;
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  DenseMap<MachineDomTreeNode*, MachineDomTreeNode*> ParentMap;
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  DenseMap<MachineDomTreeNode*, unsigned> OpenChildren;
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  CurrVN = 0;
 
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  // Perform a DFS walk to determine the order of visit.
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  WorkList.push_back(Node);
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  do {