[OMPT] Cleanup reset of exit_frame pointer

This is done at call-site and does not need to be handled in
__kmp_invoke_microtask. It was already absent from the x86
and x86_64 assembly, this patch removes it from the generic
implementation in z_Linux_util.cpp and adds documentation for
AArch64 and PPC64 that it's actually not needed. I can't test
on these architectures, so I don't want to change the code just
because it looks right :)

While at it, rename some variables for consistency and add a
check in test/ompt/parallel/normal.c that the pointer was reset
before entering the barrier.

Differential Revision: https://reviews.llvm.org/D64442

llvm-svn: 366721

1 files changed, 0 insertions, 4 deletions

diff --git a/openmp/runtime/src/z_Linux_util.cpp b/openmp/runtime/src/z_Linux_util.cpp
index 1983fc2b983..5f80c723a62 100644
--- a/openmp/runtime/src/z_Linux_util.cpp
+++ b/openmp/runtime/src/z_Linux_util.cpp
@@ -2415,10 +2415,6 @@ int __kmp_invoke_microtask(microtask_t pkfn, int gtid, int tid, int argc,
     break;
   }
 
-#if OMPT_SUPPORT
-  *exit_frame_ptr = 0;
-#endif
-
   return 1;
 }