[llvm-bugs] [Bug 27251] New: r261024 causes incorrect code for checkSum in this example

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=27251

            Bug ID: 27251
           Summary: r261024 causes incorrect code for checkSum in this
                    example
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: normal
          Priority: P
         Component: Backend: X86
          Assignee: unassignedbugs at nondot.org
          Reporter: kevin.b.smith at intel.com
                CC: llvm-bugs at lists.llvm.org
    Classification: Unclassified

Created attachment 16177
  --> https://llvm.org/bugs/attachment.cgi?id=16177&action=edit
Simple reproducer

To reproduce:

clang -S -O2 simp.c
clang -o simp.exe simp.s

Good version (prior to r261024) prints
4294948211
incorrect version prints
19085

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