[gcc r14-1936] Doc update: -foffload-options= examples + OpenMP in Fortran intrinsic modules

[Tobias Burnus <burnus@gcc.gnu.org>]

https://gcc.gnu.org/g:e9c1679c350be09cec5354a3d98915c3afe02c87

commit r14-1936-ge9c1679c350be09cec5354a3d98915c3afe02c87
Author: Tobias Burnus <tobias@codesourcery.com>
Date:   Mon Jun 19 10:24:08 2023 +0200

    Doc update: -foffload-options= examples + OpenMP in Fortran intrinsic modules
    
    With LTO, the -O.. flags of the host are passed on to the lto compiler, which
    also includes offloading compilers. Therefore, using --foffload-options=-O3 is
    misleading as it implies that without the default optimizations are used. Hence,
    this flags has now been removed from the usage examples.
    
    The Fortran documentation lists the content (except for API routines) routines
    of the intrinsic OpenMP modules OMP_LIB and OMP_LIB_KINDS; this commit adds
    two missing named constants and links also to the OpenMP 5.1 and 5.2
    OpenMP spec for completeness.
    
    gcc/ChangeLog:
    
            * doc/invoke.texi (-foffload-options): Remove '-O3' from the examples.
    
    gcc/fortran/ChangeLog:
    
            * intrinsic.texi (OpenMP Modules OMP_LIB and OMP_LIB_KINDS): Also
            add references to the OpenMP 5.1 and 5.2 spec; add omp_initial_device
            and omp_invalid_device named constants.

Diff:
---
 gcc/doc/invoke.texi        |  2 +-
 gcc/fortran/intrinsic.texi | 20 ++++++++++++++++----
 2 files changed, 17 insertions(+), 5 deletions(-)

diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index fafdee30f66..215ab0dd05c 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -2718,7 +2718,7 @@ Typical command lines are
 
 @smallexample
 -foffload-options='-fno-math-errno -ffinite-math-only' -foffload-options=nvptx-none=-latomic
--foffload-options=amdgcn-amdhsa=-march=gfx906 -foffload-options=-O3
+-foffload-options=amdgcn-amdhsa=-march=gfx906
 @end smallexample
 
 @opindex fopenacc
diff --git a/gcc/fortran/intrinsic.texi b/gcc/fortran/intrinsic.texi
index 5555db227ea..6c7ad03a02c 100644
--- a/gcc/fortran/intrinsic.texi
+++ b/gcc/fortran/intrinsic.texi
@@ -15247,8 +15247,9 @@ with the following options: @code{-fno-unsafe-math-optimizations
 @table @asis
 @item @emph{Standard}:
 OpenMP Application Program Interface v4.5,
-OpenMP Application Program Interface v5.0 (partially supported) and
-OpenMP Application Program Interface v5.1 (partially supported).
+OpenMP Application Program Interface v5.0 (partially supported),
+OpenMP Application Program Interface v5.1 (partially supported) and
+OpenMP Application Program Interface v5.2 (partially supported).
 @end table
 
 The OpenMP Fortran runtime library routines are provided both in
@@ -15262,9 +15263,13 @@ below.
 
 For details refer to the actual
 @uref{https://www.openmp.org/wp-content/uploads/openmp-4.5.pdf,
-OpenMP Application Program Interface v4.5} and
+OpenMP Application Program Interface v4.5},
 @uref{https://www.openmp.org/wp-content/uploads/OpenMP-API-Specification-5.0.pdf,
-OpenMP Application Program Interface v5.0}.
+OpenMP Application Program Interface v5.0},
+@uref{https://www.openmp.org/wp-content/uploads/OpenMP-API-Specification-5-1.pdf,
+OpenMP Application Program Interface v5.1} and
+@uref{https://www.openmp.org/wp-content/uploads/OpenMP-API-Specification-5-2.pdf,
+OpenMP Application Program Interface v5.2}.
 
 @code{OMP_LIB_KINDS} provides the following scalar default-integer
 named constants:
@@ -15295,6 +15300,13 @@ The following derived type:
 @item @code{omp_alloctrait}
 @end table
 
+The following scalar default-integer named constants:
+@table @asis
+@item @code{omp_initial_device}
+@item @code{omp_invalid_device}
+@end table
+
+
 The following scalar integer named constants of the
 kind @code{omp_sched_kind}: