[llvm-bugs] [Bug 44513] New: llvm-profdata failed to merge profraw with Unsupported instrumentation profile format version

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=44513

            Bug ID: 44513
           Summary: llvm-profdata failed to merge profraw with Unsupported
                    instrumentation profile format version
           Product: new-bugs
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: new bugs
          Assignee: unassignedbugs at nondot.org
          Reporter: zhizhouy at google.com
                CC: htmldeveloper at gmail.com, llvm-bugs at lists.llvm.org

I built instrumented llvm with -fprofile-generate and use llvm to build
libunwind and got profraw data.


When using llvm-profdata to merge the profraw file, cmd:
bin/llvm-profdata merge --output perf.data ~/llvm/libunwind.profraw


It shows error:

warning: ~/llvm/libunwind.profraw: Unsupported instrumentation profile format
version
error: No profiles could be merged.


Attached is the profraw data I generated with intrumented llvm.

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