diff options
| -rw-r--r-- | lib/Transforms/Scalar/LoopUnswitch.cpp | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/lib/Transforms/Scalar/LoopUnswitch.cpp b/lib/Transforms/Scalar/LoopUnswitch.cpp index 080b873790..1b94d9c29d 100644 --- a/lib/Transforms/Scalar/LoopUnswitch.cpp +++ b/lib/Transforms/Scalar/LoopUnswitch.cpp @@ -85,6 +85,13 @@ namespace { /// OrigLoopExitMap - This is used to map loop exiting block with /// corresponding loop exit block, before updating CFG. DenseMap<BasicBlock *, BasicBlock *> OrigLoopExitMap; + + // LoopBlocks contains all of the basic blocks of the loop, including the + // preheader of the loop, the body of the loop, and the exit blocks of the + // loop, in that order. + std::vector<BasicBlock*> LoopBlocks; + // NewBlocks contained cloned copy of basic blocks from LoopBlocks. + std::vector<BasicBlock*> NewBlocks; public: static char ID; // Pass ID, replacement for typeid explicit LoopUnswitch(bool Os = false) : @@ -761,10 +768,8 @@ void LoopUnswitch::UnswitchNontrivialCondition(Value *LIC, Constant *Val, << " blocks] in Function " << F->getName() << " when '" << *Val << "' == " << *LIC << "\n"; - // LoopBlocks contains all of the basic blocks of the loop, including the - // preheader of the loop, the body of the loop, and the exit blocks of the - // loop, in that order. - std::vector<BasicBlock*> LoopBlocks; + LoopBlocks.clear(); + NewBlocks.clear(); // First step, split the preheader and exit blocks, and add these blocks to // the LoopBlocks list. @@ -792,7 +797,6 @@ void LoopUnswitch::UnswitchNontrivialCondition(Value *LIC, Constant *Val, // Next step, clone all of the basic blocks that make up the loop (including // the loop preheader and exit blocks), keeping track of the mapping between // the instructions and blocks. - std::vector<BasicBlock*> NewBlocks; NewBlocks.reserve(LoopBlocks.size()); DenseMap<const Value*, Value*> ValueMap; for (unsigned i = 0, e = LoopBlocks.size(); i != e; ++i) { |