1 files changed, 20 insertions, 1 deletions
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index 617a3d8..3135821 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -302,6 +302,7 @@ Objective-C and Objective-C++ Dialects}.
 @item OpenMP and OpenACC Options
 @xref{OpenMP and OpenACC Options,,Options Controlling OpenMP and OpenACC}.
 @gccoptlist{-foffload=@var{arg}  -foffload-options=@var{arg}
+-foffload-memory=@var{arg}
 -fopenacc  -fopenacc-dim=@var{geom}
 -fopenmp  -fopenmp-simd  -fopenmp-target-simd-clone@r{[}=@var{device-type}@r{]}}
 
@@ -5235,6 +5236,20 @@ Typical command lines are
 -foffload-options=amdgcn-amdhsa=-march=gfx906
 @end smallexample
 
+@opindex foffload-memory
+@cindex OpenMP offloading memory modes
+@item -foffload-memory=none
+@itemx -foffload-memory=unified
+@itemx -foffload-memory=pinned
+Enable a memory optimization mode to use with OpenMP.  The default behavior,
+@option{-foffload-memory=none}, is to do nothing special (unless enabled via
+a requires directive in the code).  @option{-foffload-memory=unified} is
+equivalent to @code{#pragma omp requires unified_shared_memory}.
+@option{-foffload-memory=pinned} forces all host memory to be pinned (this
+mode may require the user to increase the ulimit setting for locked memory).
+All translation units must select the same setting to avoid undefined
+behavior.
+
 @opindex fopenacc
 @cindex OpenACC accelerator programming
 @item -fopenacc
@@ -5249,7 +5264,11 @@ have support for @option{-pthread}.
 Specify default compute dimensions for parallel offload regions that do
 not explicitly specify them.  The @var{geom} value is a triple of
 @samp{:}-separated sizes, in order @var{gang}, @var{worker}, and @var{vector}.
-A size can be omitted, to use a target-specific default value.
+If a size is to be deferred until execution @samp{-} can be used;
+alternatively a size can be omitted to use a target-specific default value.
+When deferring to runtime, the environment variable @env{GOMP_OPENACC_DIM}
+can be set.  It has the same format as the option value, except that
+@samp{-} is not permitted.
 
 @opindex fopenmp
 @cindex OpenMP parallel