tree bf4d3c4443079e52cb8ea503b15b51cc137469e7
parent 5f1a59c41d832beebb1955947105feb17ef519d9
author Yaxun (Sam) Liu <yaxun.liu@amd.com> 1616012043 -0400
committer Copybara-Service <copybara-worker@google.com> 1618719587 -0700

[CUDA][HIP] Mark device var used by host only

Add device variables to llvm.compiler.used if they are
ODR-used by either host or device functions.

This is necessary to prevent them from being
eliminated by whole-program optimization
where the compiler has no way to know a device
variable is used by some host code.

Reviewed by: Artem Belevich

Differential Revision: https://reviews.llvm.org/D98814

GitOrigin-RevId: d5c0f00e216aa6797499bb4c8aacac930d8a819b