[OpenMP][libomptarget] Enable requires flags for target libraries.
Target link variables are currently implemented by creating a copy of the variables on the device side and unified memory never gets exploited.
When the prgram uses the:
#pragma omp requires unified_shared_memory
directive in conjunction with a declare target link, the linked variable is no longer allocated on the device and the host version is used instead.
This behavior is overridden by performing an explicit mapping.
A Clang side patch is required.
Reviewers: ABataev, AlexEichenberger, grokos, Hahnfeld
Reviewed By: AlexEichenberger, grokos, Hahnfeld
Subscribers: Hahnfeld, jfb, guansong, jdoerfert, openmp-commits
Differential Revision: https://reviews.llvm.org/D60223
git-svn-id: https://llvm.org/svn/llvm-project/openmp/trunk@361294 91177308-0d34-0410-b5e6-96231b3b80d8
8 files changed