[llvm-bugs] [Bug 47285] New: [DSE-MEMSSA] Wrong code

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=47285

            Bug ID: 47285
           Summary: [DSE-MEMSSA] Wrong code
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Scalar Optimizations
          Assignee: unassignedbugs at nondot.org
          Reporter: paulsson at linux.vnet.ibm.com
                CC: llvm-bugs at lists.llvm.org

Created attachment 23884
  --> https://bugs.llvm.org/attachment.cgi?id=23884&action=edit
reduced testcase

clang -O3 -march=arch13 wrong0.i -o a.out
checksum = 9
lang -O3 -march=arch13 wrong0.i -o a.out -mllvm -enable-dse-memoryssa -mllvm
-keep-loops=false
checksum = 0

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