diff options
Diffstat (limited to 'lib/Transforms/Scalar/MemCpyOptimizer.cpp')
-rw-r--r-- | lib/Transforms/Scalar/MemCpyOptimizer.cpp | 22 |
1 files changed, 10 insertions, 12 deletions
diff --git a/lib/Transforms/Scalar/MemCpyOptimizer.cpp b/lib/Transforms/Scalar/MemCpyOptimizer.cpp index 1f335573a5..348e12f35b 100644 --- a/lib/Transforms/Scalar/MemCpyOptimizer.cpp +++ b/lib/Transforms/Scalar/MemCpyOptimizer.cpp @@ -657,23 +657,21 @@ bool MemCpyOpt::performCallSlotOptzn(Instruction *cpy, // guarantees that it holds only undefined values when passed in (so the final // memcpy can be dropped), that it is not read or written between the call and // the memcpy, and that writing beyond the end of it is undefined. - SmallVector<User*, 8> srcUseList(srcAlloca->use_begin(), - srcAlloca->use_end()); + SmallVector<User*, 8> srcUseList(srcAlloca->user_begin(), + srcAlloca->user_end()); while (!srcUseList.empty()) { - User *UI = srcUseList.pop_back_val(); + User *U = srcUseList.pop_back_val(); - if (isa<BitCastInst>(UI) || isa<AddrSpaceCastInst>(UI)) { - for (User::use_iterator I = UI->use_begin(), E = UI->use_end(); - I != E; ++I) - srcUseList.push_back(*I); - } else if (GetElementPtrInst *G = dyn_cast<GetElementPtrInst>(UI)) { + if (isa<BitCastInst>(U) || isa<AddrSpaceCastInst>(U)) { + for (User *UU : U->users()) + srcUseList.push_back(UU); + } else if (GetElementPtrInst *G = dyn_cast<GetElementPtrInst>(U)) { if (G->hasAllZeroIndices()) - for (User::use_iterator I = UI->use_begin(), E = UI->use_end(); - I != E; ++I) - srcUseList.push_back(*I); + for (User *UU : U->users()) + srcUseList.push_back(UU); else return false; - } else if (UI != C && UI != cpy) { + } else if (U != C && U != cpy) { return false; } } |