[llvm-bugs] [Bug 46749] New: Assertion `(LocalChanged || (RefHash == StructuralHash(F))) && "Pass modifies its input and doesn't report it."' for -globalopt pass

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=46749

            Bug ID: 46749
           Summary: Assertion `(LocalChanged || (RefHash ==
                    StructuralHash(F))) && "Pass modifies its input and
                    doesn't report it."' for -globalopt pass
           Product: new-bugs
           Version: trunk
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: new bugs
          Assignee: unassignedbugs at nondot.org
          Reporter: david.stenberg at ericsson.com
                CC: htmldeveloper at gmail.com, llvm-bugs at lists.llvm.org,
                    sguelton at redhat.com

Created attachment 23733
  --> https://bugs.llvm.org/attachment.cgi?id=23733&action=edit
IR reproducer.

Requires an expensive checks build to reproduce.

$ opt -globalopt -S globalopt.ll                                                
opt: ../lib/IR/LegacyPassManager.cpp:1702: bool (anonymous
namespace)::MPPassManager::runOnModule(llvm::Module &): Assertion
`(LocalChanged || (RefHash == StructuralHash(M))) && "Pass modifies its input
and doesn't report it."' failed.

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