[PATCH] D38201: Use a BumpPtrAllocator for Loop objects

[Aditya Nandakumar via llvm-commits]

Hi Sanjay,

This change is causing some ASAN issues about use after poison. Attached here is a bug point reduced test case. Could you please revert this commit and take a look?

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opt -loop-unroll simplified.ll crashes for me.

Aditya
> On Sep 27, 2017, at 7:47 PM, Sanjoy Das via Phabricator via llvm-commits <llvm-commits at lists.llvm.org> wrote:
> 
> This revision was automatically updated to reflect the committed changes.
> Closed by commit rL314375: Use a BumpPtrAllocator for Loop objects (authored by sanjoy).
> 
> Changed prior to commit:
>  https://reviews.llvm.org/D38201?vs=116907&id=116916#toc
> 
> Repository:
>  rL LLVM
> 
> https://reviews.llvm.org/D38201
> 
> Files:
>  llvm/trunk/include/llvm/Analysis/LoopInfo.h
>  llvm/trunk/include/llvm/Analysis/LoopInfoImpl.h
>  llvm/trunk/include/llvm/Analysis/LoopPass.h
>  llvm/trunk/include/llvm/CodeGen/MachineLoopInfo.h
>  llvm/trunk/include/llvm/IR/PassManager.h
>  llvm/trunk/include/llvm/Support/Allocator.h
>  llvm/trunk/include/llvm/Transforms/Scalar/LoopPassManager.h
>  llvm/trunk/lib/Analysis/CGSCCPassManager.cpp
>  llvm/trunk/lib/Analysis/LoopAnalysisManager.cpp
>  llvm/trunk/lib/Analysis/LoopInfo.cpp
>  llvm/trunk/lib/Analysis/LoopPass.cpp
>  llvm/trunk/lib/Transforms/IPO/Inliner.cpp
>  llvm/trunk/lib/Transforms/IPO/LoopExtractor.cpp
>  llvm/trunk/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp
>  llvm/trunk/lib/Transforms/Scalar/LoopDeletion.cpp
>  llvm/trunk/lib/Transforms/Scalar/LoopUnrollPass.cpp
>  llvm/trunk/lib/Transforms/Scalar/LoopUnswitch.cpp
>  llvm/trunk/lib/Transforms/Utils/CloneFunction.cpp
>  llvm/trunk/lib/Transforms/Utils/LoopSimplify.cpp
>  llvm/trunk/lib/Transforms/Utils/LoopUnroll.cpp
>  llvm/trunk/lib/Transforms/Vectorize/LoopVectorize.cpp
>  llvm/trunk/test/Transforms/LoopUnroll/unroll-loop-invalidation.ll
>  llvm/trunk/unittests/Transforms/Scalar/LoopPassManagerTest.cpp
> 
> <D38201.116916.patch>_______________________________________________
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