[llvm-bugs] [Bug 38263] New: Enable LoopInterchange by default

via llvm-bugs llvm-bugs at lists.llvm.org
Sun Jul 22 09:33:29 PDT 2018


            Bug ID: 38263
           Summary: Enable LoopInterchange by default
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Loop Optimizer
          Assignee: unassignedbugs at nondot.org
          Reporter: Florian.Hahn at arm.com
                CC: llvm-bugs at lists.llvm.org

Over the last year, the LoopInterchange pass has seen some improvements fixing
all known/reported bugs.

Currently the pass is still quite limited in the types of loops is supports and
I think we should get a few improvements in before we consider enabling it by
  * Add support for reductions (PR30472), https://reviews.llvm.org/D43245
  * Use cache-based cost model (https://reviews.llvm.org/D35210)

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