[llvm-bugs] [Bug 36787] New: [MemorySSA] Assertion `&*ALI == *AAI && "Not the same accesses in the same order"' failed

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=36787

            Bug ID: 36787
           Summary: [MemorySSA]  Assertion `&*ALI == *AAI && "Not the same
                    accesses in the same order"' failed
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Global Analyses
          Assignee: unassignedbugs at nondot.org
          Reporter: paulsson at linux.vnet.ibm.com
                CC: llvm-bugs at lists.llvm.org

Created attachment 20087
  --> https://bugs.llvm.org/attachment.cgi?id=20087&action=edit
reduced testcase

bin/opt -S -mtriple=s390x-linux-gnu -mcpu=z13 -mem2reg -simplifycfg -early-cse
-gvn-hoist tc_memssa.ll 
opt: ./llvm/llvm-dev/lib/Analysis/MemorySSA.cpp:1701: void
llvm::MemorySSA::verifyOrdering(llvm::Function&) const: Assertion `&*ALI ==
*AAI && "Not the same accesses in the same order"' failed.
#0 0x000002aa0dc8b9e4 llvm::sys::PrintStackTrace(llvm::raw_ostream&)
(bin/opt+0x108b9e4)
#1 0x000002aa0dc898bc llvm::sys::RunSignalHandlers() (bin/opt+0x10898bc)
#2 0x000002aa0dc89a5a SignalHandler(int) (bin/opt+0x1089a5a)
#3 0x000002aa27a71afe
#4 0x000003ffaf5381b8 gsignal (/lib/s390x-linux-gnu/libc.so.6+0x381b8)
#5 0x000003ffaf539726 abort (/lib/s390x-linux-gnu/libc.so.6+0x39726)
#6 0x000003ffaf5300d6 (/lib/s390x-linux-gnu/libc.so.6+0x300d6)
#7 0x000003ffaf530164 (/lib/s390x-linux-gnu/libc.so.6+0x30164)
#8 0x000002aa0d10ec7c llvm::MemorySSA::verifyOrdering(llvm::Function&) const
(bin/opt+0x50ec7c)
#9 0x000002aa0d116b44 llvm::MemorySSA::verifyMemorySSA() const
(bin/opt+0x516b44)
#10 0x000002aa0d6c7a72
llvm::PMDataManager::verifyPreservedAnalysis(llvm::Pass*) (bin/opt+0xac7a72)
#11 0x000002aa0d6cbf50 llvm::FPPassManager::runOnFunction(llvm::Function&)
(bin/opt+0xacbf50)
#12 0x000002aa0d6cc142 llvm::FPPassManager::runOnModule(llvm::Module&)
(bin/opt+0xacc142)
#13 0x000002aa0d6cbafc llvm::legacy::PassManagerImpl::run(llvm::Module&)
(bin/opt+0xacbafc)
#14 0x000002aa0ceee326 main (bin/opt+0x2ee326)
#15 0x000003ffaf522ece __libc_start_main
(/lib/s390x-linux-gnu/libc.so.6+0x22ece)
#16 0x000002aa0cf24394 _start (bin/opt+0x324394)
Stack dump:
0.      Program arguments: bin/opt -S -mtriple=s390x-linux-gnu -mcpu=z13
-mem2reg -simplifycfg -early-cse -gvn-hoist tc_memssa.ll 
1.      Running pass 'Function Pass Manager' on module 'tc_memssa.ll'.
Aborted

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