[llvm-bugs] [Bug 32500] New: Pattern matching based optimizations produce wrong results

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=32500

            Bug ID: 32500
           Summary: Pattern matching based optimizations produce wrong
                    results
           Product: Polly
           Version: unspecified
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Optimizer
          Assignee: polly-dev at googlegroups.com
          Reporter: phschaad at student.ethz.ch
                CC: gareevroman at gmail.com, llvm-bugs at lists.llvm.org,
                    tobias at grosser.es

Compiling the Polybench/C 4.2.1 beta kernels gemm/2mm/3mm with [-O3 -mllvm
-polly] makes them return wrong results. Disabling pattern matching based
optimizations [-O3 -mllvm -polly -mllvm
-polly-pattern-matching-based-opts=false] fixes that issue.

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