Profile-Guided Optimization (PGO) Options

• finstrument-functions, Qinstrument-functions
  Determines whether function entry and exit points are instrumented.
• Gh
  Calls a function to aid custom user profiling.
• GH
  Calls a function to aid custom user profiling.
• opt-prefetch, Qopt-prefetch
  Enables or disables prefetch insertion optimization.
• p
  Compiles and links for function profiling with gprof(1).
• prof-data-order, Qprof-data-order
  Enables or disables data ordering if profiling information is enabled.
• prof-dir, Qprof-dir
  Specifies a directory for profiling information output files.
• prof-file, Qprof-file
  Specifies an alternate file name for the profiling summary files.
• prof-func-groups
  Enables or disables function grouping if profiling information is enabled.
• prof-func-order, Qprof-func-order
  Enables or disables function ordering if profiling information is enabled.
• prof-gen, Qprof-gen
  Produces an instrumented object file that can be used in profile-guided optimization.
• prof-hotness-threshold, Qprof-hotness-threshold
  Lets you set the hotness threshold for function grouping and function ordering.
• prof-src-dir, Qprof-src-dir
  Determines whether directory information of the source file under compilation is considered when looking up profile data records.
• prof-src-root, Qprof-src-root
  Lets you use relative directory paths when looking up profile data and specifies a directory as the base.
• prof-src-root-cwd, Qprof-src-root-cwd
  Lets you use relative directory paths when looking up profile data and specifies the current working directory as the base.
• prof-use, Qprof-use
  Enables the use of profiling information during optimization.
• prof-value-profiling, Qprof-value-profiling
  Controls which values are value profiled.
• profile-functions, Qprofile-functions
  Inserts instrumentation calls at a function's entry and exit points.
• profile-loops, Qprofile-loops
  Inserts instrumentation calls at a function's entry and exit points, and before and after instrumentable loops.
• profile-loops-report, Qprofile-loops-report
  Controls the level of detail for the data collected when instrumentation occurs before and after certain loops.
• Qcov-dir
  Specifies a directory for profiling information output files that can be used with the codecov or tselect tool.
• Qcov-file
  Specifies an alternate file name for the profiling summary files that can be used with the codecov or tselect tool.
• Qcov-gen
  Produces an instrumented object file that can be used with the codecov or tselect tool.
• Qfnsplit
  Enables function splitting.

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