# prof-gen-sampling

Tells the compiler to generate debug discriminators in debug output. This aids in developing more precise sampled profiling output. This option is deprecated and will be removed in a future release.

## Syntax

Linux: | -prof-gen-sampling

macOS: | None

Windows: | None

## Arguments

None

## Default

OFF | The compiler does not generate debug discriminators in the debug output.

## Description

This option tells the compiler to generate debug discriminators in debug output. Debug discriminators are used to distinguish code from different basic blocks that have the same source position information. This aids in developing more precise sampled hardware profiling output.

To build an executable suitable for generating hardware profiled sampled output, compile with the following options:

        -prof-gen-sampling -g

To use the data files produced by hardware profiling, compile with option -prof-use-sampling.

## IDE Equivalent

None

## Alternate Options

None

Parent topic: Profile Guided Optimization (PGO) Options

## See Also

prof-use-sampling compiler option
g compiler option
Profile an Application with Instrumentation