[llvm-bugs] [Bug 41083] New: Assertion in ScopedHashTable during EarlyCSE

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=41083

            Bug ID: 41083
           Summary: Assertion in ScopedHashTable during EarlyCSE
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Scalar Optimizations
          Assignee: unassignedbugs at nondot.org
          Reporter: sam.parker at arm.com
                CC: llvm-bugs at lists.llvm.org

Created attachment 21600
  --> https://bugs.llvm.org/attachment.cgi?id=21600&action=edit
LLVM IR reproducer

PR41081 described an issue where an assertion is hit:
HT.TopLevelMap[ThisEntry->getKey()] == ThisEntry && "Scope imbalance!");

I've attached the LLVM IR from the original ticket. To reproduce:

opt -early-cse locale-reduce.ll -S -o -

I've 'fixed' the original bug by removing this pass from the arm backend
pipeline as I have no experience with this pass.

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