commit 283f308bdb5893bab1f36791711346e746045f94
author Alexey Bader <alexey.bader@intel.com> Tue Feb 19 15:19:06 2019 +0000
committer Alexey Bader <alexey.bader@intel.com> Tue Feb 19 15:19:06 2019 +0000
tree 6233ea931ea76288f72d986d08f84d9876a86d9c
parent b492883ea31e2046d5725126318911465bc1374f

[OpenCL] Change type of block pointer for OpenCL

Summary:

For some reason OpenCL blocks in LLVM IR are represented as function pointers.
These pointers do not point to any real function and never get called. Actually
they point to some structure, which in turn contains pointer to the real block
invoke function.
This patch changes represntation of OpenCL blocks in LLVM IR from function
pointers to pointers to `%struct.__block_literal_generic`.
Such representation allows to avoid unnecessary bitcasts and simplifies
further processing (e.g. translation to SPIR-V ) of the module for targets
which do not support function pointers.

Patch by: Alexey Sotkin.

Reviewers: Anastasia, yaxunl, svenvh

Reviewed By: Anastasia

Subscribers: alexbatashev, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D58277

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@354337 91177308-0d34-0410-b5e6-96231b3b80d8