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| author | dim <dim@FreeBSD.org> | 2010-10-07 16:32:35 +0000 |
|---|---|---|
| committer | dim <dim@FreeBSD.org> | 2010-10-07 16:32:35 +0000 |
| commit | 4ace901e87dac5bbbac78ed325e75462e48e386e (patch) | |
| tree | 99654a7bec5100d4946dd9006e41d4718e0f14bd /lib/CodeGen | |
| parent | 5d5cc59cc77afe655b3707cb0e69e0827b444cad (diff) | |
| download | FreeBSD-src-4ace901e87dac5bbbac78ed325e75462e48e386e.zip FreeBSD-src-4ace901e87dac5bbbac78ed325e75462e48e386e.tar.gz | |
Vendor import of llvm 2.8 release:
http://llvm.org/svn/llvm-project/llvm/tags/RELEASE_28@115866
Approved by: rpaulo (mentor)
Diffstat (limited to 'lib/CodeGen')
| -rw-r--r-- | lib/CodeGen/MachineCSE.cpp | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/lib/CodeGen/MachineCSE.cpp b/lib/CodeGen/MachineCSE.cpp index 92e2299..272b54d 100644 --- a/lib/CodeGen/MachineCSE.cpp +++ b/lib/CodeGen/MachineCSE.cpp @@ -54,6 +54,11 @@ namespace { AU.addPreserved<MachineDominatorTree>(); } + virtual void releaseMemory() { + ScopeMap.clear(); + Exps.clear(); + } + private: const unsigned LookAheadLimit; typedef ScopedHashTableScope<MachineInstr*, unsigned, @@ -101,7 +106,7 @@ bool MachineCSE::PerformTrivialCoalescing(MachineInstr *MI, unsigned Reg = MO.getReg(); if (!Reg || TargetRegisterInfo::isPhysicalRegister(Reg)) continue; - if (!MRI->hasOneUse(Reg)) + if (!MRI->hasOneNonDBGUse(Reg)) // Only coalesce single use copies. This ensure the copy will be // deleted. continue; @@ -469,6 +474,8 @@ bool MachineCSE::PerformCSE(MachineDomTreeNode *Node) { DenseMap<MachineDomTreeNode*, MachineDomTreeNode*> ParentMap; DenseMap<MachineDomTreeNode*, unsigned> OpenChildren; + CurrVN = 0; + // Perform a DFS walk to determine the order of visit. WorkList.push_back(Node); do { |
