[Openmp-commits] [openmp] f244af5 - [openmp][amdgpu] Update SupportAndFAQ docs

[Jon Chesterfield via Openmp-commits]

Author: Jon Chesterfield
Date: 2021-09-10T18:35:29+01:00
New Revision: f244af5c9fd1017c0a770869db4c7abe14bfa46e

URL: https://github.com/llvm/llvm-project/commit/f244af5c9fd1017c0a770869db4c7abe14bfa46e
DIFF: https://github.com/llvm/llvm-project/commit/f244af5c9fd1017c0a770869db4c7abe14bfa46e.diff

LOG: [openmp][amdgpu] Update SupportAndFAQ docs

Added: 
    

Modified: 
    openmp/docs/SupportAndFAQ.rst

Removed: 
    


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diff  --git a/openmp/docs/SupportAndFAQ.rst b/openmp/docs/SupportAndFAQ.rst
index 17ffae0440e9d..ea8ea97e2f614 100644
--- a/openmp/docs/SupportAndFAQ.rst
+++ b/openmp/docs/SupportAndFAQ.rst
@@ -105,9 +105,9 @@ OpenMP's perspective. Rocr is an implementation of `HSA
   INSTALL_PREFIX=same-as-llvm-install
   
   cd $SOURCE_DIR
-  git clone git at github.com:RadeonOpenCompute/ROCT-Thunk-Interface.git -b roc-4.1.x \
+  git clone git at github.com:RadeonOpenCompute/ROCT-Thunk-Interface.git -b roc-4.2.x \
     --single-branch
-  git clone git at github.com:RadeonOpenCompute/ROCR-Runtime.git -b rocm-4.1.x \
+  git clone git at github.com:RadeonOpenCompute/ROCR-Runtime.git -b rocm-4.2.x \
     --single-branch
   
   cd $BUILD_DIR && mkdir roct && cd roct
@@ -136,12 +136,10 @@ With those libraries installed, then LLVM build and installed, try:
 
 Q: What are the known limitations of OpenMP AMDGPU offload?
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-LD_LIBRARY_PATH is presently required to find the openmp libraries.
+LD_LIBRARY_PATH or rpath/runpath are required to find libomp.so and libomptarget.so
 
-There is no libc. That is, malloc and printf do not exist. Also no libm, so
-functions like cos(double) will not work from target regions.
-
-Cards from the gfx10 line, 'navi', that use wave32 are not yet implemented.
+There is no libc. That is, malloc and printf do not exist. Libm is implemented in terms
+of the rocm device library, which will be searched for if linking with '-lm'.
 
 Some versions of the driver for the radeon vii (gfx906) will error unless the
 environment variable 'export HSA_IGNORE_SRAMECC_MISREPORT=1' is set.