XL Fortran Enterprise Edition for AIX : User's Guide - IBM

threads[=N] | nothreads
threads[=N] runs the number of parallel threads that are available, or as
specified by N. N must be a positive integer. nothreads does not run any
parallel threads. This is equivalent to running one serial thread.
unknown=procedure_names
Specifies a list of procedures that are not compiled with -qipa. Any
procedure specified as “unknown” may make calls to other parts of the
program compiled with -qipa and modify global variables and dummy
arguments.
The primary use of isolated, missing, pure, safe, and unknown is to specify how
much optimization can safely be performed on calls to library routines that are not
compiled with -qipa.
The following compiler options have an effect on the link-time phase of -qipa:
-qlibansi | -qnolibansi
Assumes that all functions with the name of an ANSI C defined library
function are, in fact, the library functions.
-qlibessl | -qnolibessl
Assumes that all functions with the name of an ESSL defined library
function are, in fact, the library functions.
-qlibposix | -qnolibposix
Assumes that all functions with the name of a POSIX 1003.1 defined
library function are, in fact, the system functions.
-qthreaded
Assumes that the compiler will attempt to generate thread-safe code.
Applicable Product Levels
This option is similar but not identical to the -qipa option of XL Fortran Version 3.
If you have makefiles that already contain the -qipa option, modify them as
needed to use the new suboption names.
Rules
Regular expressions are supported for the following suboptions:
exits
inline
lowfreq
noinline
pure
safe
unknown
Syntax rules for regular expressions are described below.
Table 15. Regular expression syntax
Expression
string
^string
Description
Matches any of the characters specified in
string. For example, test will match
testimony, latest, intestine.
Matches the pattern specified by string only
if it occurs at the beginning of a line.
XL Fortran Compiler-Option Reference 185