[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, 3 insertions, 0 deletions

diff --git a/openmp/runtime/test/ompt/parallel/normal.c b/openmp/runtime/test/ompt/parallel/normal.c
index 2cc9ce11807..011bfacb130 100644
--- a/openmp/runtime/test/ompt/parallel/normal.c
+++ b/openmp/runtime/test/ompt/parallel/normal.c
@@ -64,6 +64,9 @@ int main() {
   // THREADS: {{^}}[[MASTER_ID]]: ompt_event_barrier_begin
   // THREADS-SAME: parallel_id=[[PARALLEL_ID]], task_id=[[IMPLICIT_TASK_ID]]
   // THREADS-SAME: codeptr_ra=[[RETURN_ADDRESS]]{{[0-f][0-f]}}
+  // THREADS: {{^}}[[MASTER_ID]]: task level 0
+  // THREADS-SAME: parallel_id=[[PARALLEL_ID]], task_id=[[IMPLICIT_TASK_ID]]
+  // THREADS-SAME: exit_frame=[[NULL]], reenter_frame=[[NULL]]
   // THREADS: {{^}}[[MASTER_ID]]: ompt_event_barrier_end
   // parallel_id is 0 because the region ended in the barrier!
   // THREADS-SAME: parallel_id=0, task_id=[[IMPLICIT_TASK_ID]]