[PATCH] D20979: [OpenCL] Use function attribute/metadata to represent kernel attributes

[Yaxun Liu via cfe-commits]

yaxunl created this revision.
yaxunl added reviewers: Anastasia, bader, pxli168.
yaxunl added subscribers: cfe-commits, tstellarAMD.

This patch attempts to use target-dependent function attribute to represent reqd_work_group_size, work_group_size_hint and vector_type_hint kernel attributes and use function metadata to represent kernel argument info.

This is to elicit further discussion about a better way to represent kernel attributes.

The cfe-dev discussion is at http://lists.llvm.org/pipermail/cfe-dev/2016-June/049223.html

http://reviews.llvm.org/D20979

Files:
  lib/CodeGen/CodeGenFunction.cpp
  test/CodeGenOpenCL/kernel-arg-info.cl
  test/CodeGenOpenCL/kernel-attributes.cl
  test/CodeGenOpenCL/kernel-metadata.cl

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