[llvm-bugs] [Bug 43692] New: [IndVarSimplify] Functional change with -DLLVM_ENABLE_ASSERTIONS=OFF

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=43692

            Bug ID: 43692
           Summary: [IndVarSimplify]  Functional change with
                    -DLLVM_ENABLE_ASSERTIONS=OFF
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          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 22678
  --> https://bugs.llvm.org/attachment.cgi?id=22678&action=edit
reduced testcase

opt -mtriple=s390x-linux-gnu -mcpu=z14 tc_asserts_FC.ll -O3

Depending on -DLLVM_ENABLE_ASSERTIONS= OFF or ON, this gives a different
output.

After Induction Variable Simplification:
with asserts <> no asserts
zext     |  sext
icmp ne  | icmp slt

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