Hello, I am trying to improve OpenMP task implementation. At first I thought I just have to modify ABIs (such as GOMP_task) internal but I realised I have to change the translation of OpenMP.
My question is how to change the translation of OpenMP. (I guess I should edit gcc/omp-low.c:create_omp_child_function() but how?) I checked the current translation by $ gcc -O2 -fopenmp -fdump-tree-ompexp omp_fib.c and realised a problem that limits flexibility of internal implementation. I want "GOMP_taskexit" ABI which is called just before functions bound to tasks (*._omp_fn.[0-9]) ends. Here a task finishes its work. My task scheduling implementation needs GOMP_taskexit ABI. For example, when the last child task of a parent task finishes its work, it tells to the parent that all of children finished their work so the parent should resume its work. Tell me how to add "GOMP_taskexit" ABI. Sho Nakatani
