Developer Guide and Reference

Contents

prof-func-order, Qprof-func-order

Enables or disables function ordering if profiling information is enabled.

Syntax

Linux:
-prof-func-order
-no-prof-func-order
macOS:
None
Windows:
/Qprof-func-order
/Qprof-func-order-
Arguments
None
Default
-no-prof-func-order
or
/Qprof-func-order-
Function ordering is disabled.
Description
This option enables or disables function ordering if profiling information is enabled.
For this option to be effective, you must do the following:
  • For instrumentation compilation, you must specify option
    [Q]prof-gen setting srcpos
    .
  • For feedback compilation, you must specify
    [Q]prof-use
    . You must not use multi-file optimization by specifying options such as
    [Q]ipo
    or
    [Q]ipo-c
    .
If you enable profiling information by specifying option
[Q]prof-use
, option
[Q]prof-func-groups
is set and function grouping is enabled. However, if you explicitly enable the
[Q]prof-func-order
option, function ordering is performed instead of function grouping.
On Linux* systems, this option is only available for Linux linker 2.15.94.0.1, or later.
To set the hotness threshold for function grouping and function ordering, use option
[Q]prof-hotness-threshold
.