Category
Pragma equivalent
#pragma options [no]ignprag
Purpose
Instructs the compiler to ignore certain pragma statements.
This option is useful for detecting aliasing pragma errors. Incorrect aliasing gives runtime errors that are hard to diagnose. When a runtime error occurs, but the error disappears when you use ignprag with the -O option, the information specified in the aliasing pragmas is likely incorrect.
Syntax
.- :--------------------. V | >>- -qignprag--=----+-------------------+-+-------------------->< +-+-all-----------+-+ | +-disjoint------+ | | '-isolated_call-' | +-ibm---------------+ '-omp---------------'
Defaults
Not applicable.
Parameters
- all
- Ignores all #pragma isolated_call and #pragma disjoint directives in the source file.
- disjoint
- Ignores all #pragma disjoint directives in the source file.
- ibm
Ignores all #pragma ibm
snapshot directives and all IBM SMP directives (such
as #pragma ibm parallel_loop and #pragma ibm schedule)
in the source file.- isolated_call
- Ignores all #pragma isolated_call directives in the source file.
- omp
- Ignores all OpenMP parallel processing directives in the source file, such as #pragma omp parallel, #pragma omp critical.
Predefined macros
None.
Examples
To compile myprogram.c and
ignore any #pragma isolated_call directives, enter:
xlc myprogram.c -qignprag=isolated_call