commit 3654abe1c43bb77b33278463bf892a7b1effac1f
author Gheorghe-Teodor Bercea <gheorghe-teod.bercea@ibm.com> Wed Aug 07 17:29:45 2019 +0000
committer Gheorghe-Teodor Bercea <gheorghe-teod.bercea@ibm.com> Wed Aug 07 17:29:45 2019 +0000
tree f98fbccb5871e0e129a9ddd606f80dcdb125f1f2
parent 2535f2b25498d11c34b4c3affa4985ae977fc0ac

[OpenMP][libomptarget] Add support for unified memory for regular maps

Summary:
This patch adds support for using unified memory in the case of regular maps that happen when a target region is offloaded to the device.

For cases where only a single version of the data is required then the host address can be used. When variables need to be privatized in any way or globalized, then the copy to the device is still required for correctness.

Reviewers: ABataev, jdoerfert, Hahnfeld, AlexEichenberger, caomhin, grokos

Reviewed By: Hahnfeld

Subscribers: mgorny, guansong, openmp-commits

Tags: #openmp

Differential Revision: https://reviews.llvm.org/D65001

git-svn-id: https://llvm.org/svn/llvm-project/openmp/trunk@368192 91177308-0d34-0410-b5e6-96231b3b80d8