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...tance, a flush might be implemented as an MFENCE on the x86 architecture in some compilers. * What are non-seq_cst atomic read, write, update and capture lowered to for each of your targets? * What are seq_cst atomic read, write, update and capture lowered to for each of your targets? * What is the taskwait construct lowered to for each of your targets? * What are omp_set_lock and omp_unset_lock lowered to for each of your targets? * What is a barrier lowered to for each of your targets? * Are any optimisations allowed to reorder, change or remove code that uses any of the synchronisation constructs a...

We're seeing OMPT tests fail on AArch64: libomp :: ompt/misc/control_tool.c libomp :: ompt/synchronization/master.c libomp :: ompt/synchronization/taskwait.c The failure mode is similar for all of them: openmp/runtime/test/ompt/misc/control_tool.c:26:17: error: CHECK-NEXT: expected string not found in input // CHECK-NEXT: {{^}}[[MASTER_ID]]: current_address={{.*}}[[RETURN_ADDRESS]] ^ <stdin>:9:1: note: scanning from here 28147...

...gt; > Cheers, > Jonas > > On 2018-12-20 22:34, David Greene via llvm-dev wrote: >> We're seeing OMPT tests fail on AArch64: >> >> libomp :: ompt/misc/control_tool.c >> libomp :: ompt/synchronization/master.c >> libomp :: ompt/synchronization/taskwait.c >> >> The failure mode is similar for all of them: >> >> openmp/runtime/test/ompt/misc/control_tool.c:26:17: error: CHECK-NEXT: >> expected string not found in input >> // CHECK-NEXT: {{^}}[[MASTER_ID]]: >> current_address={{.*}}[[RETURN_ADDRESS]] >&g...

...ollowed by a barrier intrinsic. - Tasks - Explicit tasks are also lowered as functions similar to other special handling regions. Their call site(s) are marked with 'parallel' metadata. Depending on the implementation, they may not actually start executing until the main thread executes a taskwait intrinsic or reaches the end of the parallel region. The task metadata has: - The string "task" - A reference to the function specifying the task - A metadata reference to the parent region, task, loop, etc. - Optionally, an affinity mode: "untied" or "tied" (t...

...| OMP_CRITICAL > | OMP_END_CRITICAL > ------------------------------------------------------------ > barrier | OMP_BARRIER > ------------------------------------------------------------ > taskwait | OMP_PTASKWAIT > ------------------------------------------------------------ > atomic | OMP_ATOMIC > | OMP_END_ATOMIC > ------------------------------------------------------------ &g...

...------------ critical | OMP_CRITICAL | OMP_END_CRITICAL ------------------------------------------------------------ barrier | OMP_BARRIER ------------------------------------------------------------ taskwait | OMP_PTASKWAIT ------------------------------------------------------------ atomic | OMP_ATOMIC | OMP_END_ATOMIC ------------------------------------------------------------ flush...

...| OMP_CRITICAL > | OMP_END_CRITICAL > ------------------------------------------------------------ > barrier | OMP_BARRIER > ------------------------------------------------------------ > taskwait | OMP_PTASKWAIT > ------------------------------------------------------------ > atomic | OMP_ATOMIC > | OMP_END_ATOMIC > ------------------------------------------------------------ &gt...

...| OMP_CRITICAL > | OMP_END_CRITICAL > ------------------------------------------------------------ > barrier | OMP_BARRIER > ------------------------------------------------------------ > taskwait | OMP_PTASKWAIT > ------------------------------------------------------------ > atomic | OMP_ATOMIC > | OMP_END_ATOMIC > ------------------------------------------------------------ &gt...