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author | Bill Wendling <isanbard@gmail.com> | 2010-09-17 22:09:07 +0000 |
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committer | Bill Wendling <isanbard@gmail.com> | 2010-09-17 22:09:07 +0000 |
commit | 9a87b4df8ce625f302c4ca251718fd07b93286cc (patch) | |
tree | a373d433251790d8edd4aeaf3e5a435fa9311003 | |
parent | 4ab405d84bd90aa6ffdbaf01c83cb8aa2fbe75f5 (diff) | |
download | llvm-9a87b4df8ce625f302c4ca251718fd07b93286cc.zip llvm-9a87b4df8ce625f302c4ca251718fd07b93286cc.tar.gz llvm-9a87b4df8ce625f302c4ca251718fd07b93286cc.tar.bz2 |
Approved by Evan
$ svn merge -c 114220 https://llvm.org/svn/llvm-project/llvm/trunk
--- Merging r114220 into '.':
U lib/CodeGen/MachineCSE.cpp
$ svn merge -c 114222 https://llvm.org/svn/llvm-project/llvm/trunk
--- Merging r114222 into '.':
G lib/CodeGen/MachineCSE.cpp
llvm-svn: 114224
-rw-r--r-- | llvm/lib/CodeGen/MachineCSE.cpp | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/llvm/lib/CodeGen/MachineCSE.cpp b/llvm/lib/CodeGen/MachineCSE.cpp index 92e2299..272b54d 100644 --- a/llvm/lib/CodeGen/MachineCSE.cpp +++ b/llvm/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 { |