[llvm-bugs] [Bug 26311] New: [Polly] Verify use of getNewValue in RegionBlockGenerator

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=26311

            Bug ID: 26311
           Summary: [Polly] Verify use of getNewValue in
                    RegionBlockGenerator
           Product: Polly
           Version: unspecified
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: Optimizer
          Assignee: polly-dev at googlegroups.com
          Reporter: tobias at grosser.es
                CC: llvm-bugs at lists.llvm.org
    Classification: Unclassified

Michael found by inspection that in rare corner cases the loop we choose to
synthesize SCEVs in the RegionBlockGenerator might be incorrect.

For details see:

http://reviews.llvm.org/D16522?id=45860#inline-136211

We can not currently write test cases to investigate this bug further as the
domain generation does not yet handle non-affine-loop regions well.

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