ORCJIT expects every functions prototypes to be present even when using
object caches. Code for adding stubs for entry point functions was added
previously when implementing shader cache for ORCJIT, but when using
OpenCL, extra functions could be present in compute shaders which need
stubs too.
Reuse the code for constructing references for extra functions to
generate function stubs for them.
This fixes function calls with Rusticl on llvmpipe with ORCJIT.
Fixes: bb0efdd4d8 ("llvmpipe: add shader cache support for ORCJIT implementation")
Signed-off-by: Icenowy Zheng <zhengxingda@iscas.ac.cn>
Reviewed-by: Dave Airlie <airlied@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/41532>
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