diff options
Diffstat (limited to 'lib/Transforms')
| -rw-r--r-- | lib/Transforms/Utils/LoopSimplify.cpp | 6 | ||||
| -rw-r--r-- | lib/Transforms/Utils/SimplifyCFG.cpp | 2 |
2 files changed, 7 insertions, 1 deletions
diff --git a/lib/Transforms/Utils/LoopSimplify.cpp b/lib/Transforms/Utils/LoopSimplify.cpp index 2ab0972..44a2c1f 100644 --- a/lib/Transforms/Utils/LoopSimplify.cpp +++ b/lib/Transforms/Utils/LoopSimplify.cpp @@ -305,6 +305,12 @@ ReprocessLoop: } } + // If there are duplicate phi nodes (for example, from loop rotation), + // get rid of them. + for (Loop::block_iterator BB = L->block_begin(), E = L->block_end(); + BB != E; ++BB) + EliminateDuplicatePHINodes(*BB); + return Changed; } diff --git a/lib/Transforms/Utils/SimplifyCFG.cpp b/lib/Transforms/Utils/SimplifyCFG.cpp index 8dbc808..89b0bd9 100644 --- a/lib/Transforms/Utils/SimplifyCFG.cpp +++ b/lib/Transforms/Utils/SimplifyCFG.cpp @@ -1594,7 +1594,7 @@ static bool SimplifyCondBranchToCondBranch(BranchInst *PBI, BranchInst *BI) { /// which differ only in the order of the incoming values, but instcombine /// orders them so it usually won't matter. /// -static bool EliminateDuplicatePHINodes(BasicBlock *BB) { +bool llvm::EliminateDuplicatePHINodes(BasicBlock *BB) { bool Changed = false; // This implementation doesn't currently consider undef operands |
