[llvm-bugs] [Bug 35905] New: [Value Propagation] Test case seems to get into an infinite loop and seg faults.

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=35905

            Bug ID: 35905
           Summary: [Value Propagation]  Test case seems to get into an
                    infinite loop and seg faults.
           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 19655
  --> https://bugs.llvm.org/attachment.cgi?id=19655&action=edit
reduced testcase

...
#251 0x000002aa3de147e0 llvm::matchSelectPattern(llvm::Value*, llvm::Value*&,
llvm::Value*&, llvm::Instruction::CastOps*)
(/root/llvm/build/llvm-dev/bin/opt+0x5947e0)
#252 0x000002aa3de13902 matchSelectPattern(llvm::CmpInst::Predicate,
llvm::FastMathFlags, llvm::Value*, llvm::Value*, llvm::Value*, llvm::Value*,
llvm::Value*&, llvm::Value*&) (/root/llvm/build/llvm-dev/bin/opt+0x593902)
#253 0x000002aa3de147e0 llvm::matchSelectPattern(llvm::Value*, llvm::Value*&,
llvm::Value*&, llvm::Instruction::CastOps*)
(/root/llvm/build/llvm-dev/bin/opt+0x5947e0)
#254 0x000002aa3de13902 matchSelectPattern(llvm::CmpInst::Predicate,
llvm::FastMathFlags, llvm::Value*, llvm::Value*, llvm::Value*, llvm::Value*,
llvm::Value*&, llvm::Value*&) (/root/llvm/build/llvm-dev/bin/opt+0x593902)
#255 0x000002aa3de147e0 llvm::matchSelectPattern(llvm::Value*, llvm::Value*&,
llvm::Value*&, llvm::Instruction::CastOps*)
(/root/llvm/build/llvm-dev/bin/opt+0x5947e0)
Stack dump:
...

bin/opt tc_value_prop.ll -O3 -S -mtriple=s390x-linux-gnu -mcpu=z13

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