[llvm-bugs] [Bug 50066] New: [GVN-hoist] WRONG code

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=50066

            Bug ID: 50066
           Summary: [GVN-hoist]  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 24778
  --> https://bugs.llvm.org/attachment.cgi?id=24778&action=edit
reduced testcase

The program should print '1', but prints '2' when compiled like this:

clang -O3 -march=arch13 wrong0.i -o a.out -w -mllvm -disable-licm-promotion
-mllvm -enable-gvn-hoist -mllvm -gvn-hoist-max-bbs=10 -mllvm -sink-common-insts
-mllvm -keep-loops=false

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