2020 05 18 sync

Agenda

• Opens
• GitHub issues/PRs
  • https://github.com/intel/llvm/pull/1704 - New address spaces for USM pointers
• Patches in review for llorg:
  • https://reviews.llvm.org/D74387 - [SYCL] Do not diagnose use of __float128
  • https://reviews.llvm.org/D71016 - [SYCL] Implement OpenCL kernel function generation
  • https://reviews.llvm.org/D77220 - [SYCL] Enable OpenCL types required for implementing the SYCL headers.

Meeting notes

Participants: Alexey Bader (Intel), Mariya Podchischaeva (Intel), Dmitry Sidorov (Intel), Ronan Keryell (Xilinx), Hal Finkel (ANL), Victor Lomuller (Codeplay)

• Opens
  • AR Alexey - upstream SYCL pointer lowering to address spaces.
• GitHub issues/PRs
  • https://github.com/intel/llvm/pull/1704 - New address spaces for USM pointers
    • SYCL generates global pointer for usm pointers.
    • Buffer accessor are also mapped to OpenCL global memory
    • USM allows host and device side allocations.
    • We are going to add two storage mode to let the FPGA compiler emit efficient memory access instructions for device allocations.
    • Address space: what is more efficient : new AS or new attribute?
    • Dmitry: it's easy to loose LLVM metadata and it's more natural for SPIR-V to use.
• Patches in review for llorg:
  • https://reviews.llvm.org/D74387 - [SYCL] Do not diagnose use of __float128
    • Got clarification from Johaness. I haven't finished yet. WIP
  • https://reviews.llvm.org/D71016 - [SYCL] Implement OpenCL kernel function generation
    • Victor to create an issue to unify the way SYCL types are being handled in SemaSYCL.cpp.
  • https://reviews.llvm.org/D77220 - [SYCL] Enable OpenCL types required for implementing the SYCL headers.
    • No updates