[llvm-dev] How to generate the perfscript file for llvm-profgen

[Lanzhiguan Huang via llvm-dev]

Hi,
  I'm really interested in the new CSSPGO tool, can anyone give me some
more detailed instructions about how to generate the perfscript file it
needs, I tried to first use "perf record -e xxx -b ..." to generate a
perf.data file and then use "perf script" to dump all the text into a
perfscript file, but it seems to be different from the perfscript under the
llvm/test/tools/llvm-profgen/Inputs directory.

Lanzhiguan
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