This switches everything to use the memory attribute proposed in
https://discourse.llvm.org/t/rfc-unify-memory-effect-attributes/65579.
The old argmemonly, inaccessiblememonly and inaccessiblemem_or_argmemonly
attributes are dropped. The readnone, readonly and writeonly attributes
are restricted to parameters only.
The old attributes are auto-upgraded both in bitcode and IR.
The bitcode upgrade is a policy requirement that has to be retained
indefinitely. The IR upgrade is mainly there so it's not necessary
to update all tests using memory attributes in this patch, which
is already large enough. We could drop that part after migrating
tests, or retain it longer term, to make it easier to import IR
from older LLVM versions.
High-level Function/CallBase APIs like doesNotAccessMemory() or
setDoesNotAccessMemory() are mapped transparently to the memory
attribute. Code that directly manipulates attributes (e.g. via
AttributeList) on the other hand needs to switch to working with
the memory attribute instead.
Differential Revision: https://reviews.llvm.org/D135780
Currently, -fdeclare-opencl-builtins always adds the generic address
space overloads of e.g. the vload builtin functions in OpenCL 3.0
mode, even when the generic address space feature is disabled.
Guard the generic address space overloads by the
`__opencl_c_generic_address_space` feature instead of by OpenCL
version.
Guard the private, global, and local overloads using the internal
`__opencl_c_named_address_space_builtins` feature.
Differential Revision: https://reviews.llvm.org/D107769
IR produced using TableGen builtin function declarations
(`fdeclare-opencl-builtins.cl`) did not have the target's calling
convention applied to builtin calls.
Fix this, and update the codegen test to check that IR produced using
opencl-c.h and `-fdeclare-opencl-builtins` is identical with respect
to the builtin calls.
Differential Revision: https://reviews.llvm.org/D98039
`mix` is subtly different from `clamp`: in the overloads where the
last argument is a scalar, the second argument should be a gentype for
`mix`.
As scalars can be implicitly converted to vectors, this cannot be
caught in the Sema test. Hence adding a CodeGen test, where we can
verify the types using the mangled name.
Commit 9a8d477a0e0 ("[OpenCL] Add builtin function attribute
handling", 2019-11-05) stopped Clang from mangling single-overload
builtins, which is incorrect.
Add handling for the "pure", "const" and "convergent" function
attributes for OpenCL builtin functions.
Patch by Pierre Gondois and Sven van Haastregt.
Differential Revision: https://reviews.llvm.org/D64319
