libgomp.texi: Improve OpenMP ICV description

Use @var{} instead of @emph{} - for semantic texinfo formatting; the result
is similar: slanted instead of italic in PDF, still italic in HTML, albeit
in info is is now uppercase instead of '_' as pre/suffix.

The patch also documents the newer _ALL/_DEV/_DEV_<no> env var suffixes
and as it refers to the ICV vars and their scope, those were added to the
OMP_ env vars for reference. For OMP_NESTING, a note that those were
deprecated was added plus a bunch of cross references. For OMP_ALLOCATOR,
add note about the lack of per-device env vars support.

A new section, consisting mostly of cross references was added to document
the implementation-defined ICV initialization, especially as OpenMP demands
that implementations document what they do for 'implementation defined'.

For nvptx, the implementation-defined used stack size was documented

libgomp/
	* libgomp.texi: Use @var for ICV vars.
	(OpenMP Environment Variables): Mention _ALL/_DEV/_DEV_<no> variants,
	document which ICV is set and which scope the ICV has; extend/cleanup
	some @ref.
	(Implementation-defined ICV Initialization): New.
	(nvptx): Document the implementation-defined used per-warp stack size.

0 files changed, 0 insertions, 0 deletions