[llvm-bugs] [Bug 46705] New: A64FX not supported by llvm-mca

via llvm-bugs llvm-bugs at lists.llvm.org
Mon Jul 13 07:13:02 PDT 2020


https://bugs.llvm.org/show_bug.cgi?id=46705

            Bug ID: 46705
           Summary: A64FX not supported by llvm-mca
           Product: tools
           Version: trunk
          Hardware: All
                OS: other
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: llvm-mca
          Assignee: unassignedbugs at nondot.org
          Reporter: jan.laukemann at fau.de
                CC: andrea.dibiagio at gmail.com, llvm-bugs at lists.llvm.org,
                    matthew.davis at sony.com

Even though LLVM in version 11 supports A64FX systems, llvm-mca does not allow
me to run an analysis on a a64fx system without mcpu flag or in general with
"-mcpu=a64fx" flag since it interprets the micro-architecture as in-order CPU.

It returns: 
  "error: please specify an out-of-order cpu. 'a64fx' is an in-order cpu."

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