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* Have the SimplifyLibCalls pass acquire the TargetData and pass it down to the optimization classes so they can use it to make better choices for the signatures of functions, etc. * Rearrange the code a little so the utility functions are closer to their usage and keep the core of the pass near the top of the files. * Adjust the StrLen pass to get/use the correct prototype depending on the TargetData::getIntPtrType() result. The result of strlen is size_t which could be either uint or ulong depending on the platform. * Clean up some coding nits (cast vs. dyn_cast, remove redundant items from a switch, etc.) * Implement the MemMoveOptimization as a twin of MemCpyOptimization (they only differ in name). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21569 91177308-0d34-0410-b5e6-96231b3b80d8
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