Show parallelization warning messages.
Issues warnings about potential parallel programming problems in OpenMP programs.
Use with the -xopenmp option.
The compiler issues warnings when it detects the following situations:
Loops are parallelized using OpenMP directives when there are data dependencies between different loop iterations.
OpenMP data-sharing attributes-clauses are problematic. For example, declaring a variable "shared" whose accesses in an OpenMP parallel region may cause data race, or declaring a variable "private" whose value in a parallel region is used after the parallel region.
No warnings appear if all parallelization directives are processed without problems.