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Some targets have a specific calling convention that should be used for
generated calls to runtime functions.
Pass that down and use it.
Signed-off-by: Nick Sarnie <nick.sarnie@intel.com>
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First, for internal variables, they are always global, so use the global
AS by default unless specified otherwise. We can't really use `0` as a
default like we do now because that has an actual meaning on some
targets, so we really need specified vs unspecified, so I used
`std::optional` which is already used in many places in OMPIRBuilder.
Second, for the critical lock variable, add an addrspace cast if needed.
Signed-off-by: Nick Sarnie <nick.sarnie@intel.com>
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support (#125920)
As Intel is working to add support for SPIR-V OpenMP device offloading
in upstream clang/liboffload, we need to modify the OpenMP frontend to
allow SPIR-V as well as generate valid IR for SPIR-V. For example, we
need the frontend to generate code to define and interact with device
globals used in the DeviceRTL.
This is the beginning of what I expect will be (many) other changes, but
let's get started with something simple.
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Signed-off-by: Sarnie, Nick <nick.sarnie@intel.com>
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