Hi and thanks for the patch.
I would rather avoid having to hard-code the types of built-in
functions, especially since we can already access them via the function
gcc_jit_context_get_target_builtin_function that is available in this
patch: https://gcc.gnu.org/pipermail/jit/2023q4/001725.html
This patch adds dynamic alloca stubs support to GCCJIT.
DEF_BUILTIN_STUB only defines the enum for builtins instead of
providing the type. Therefore, builtins with stub will lead to
ICE before this patch. This applies to `alloca_with_align`,
`stack_save` and `stack_restore`.
This patch adds speci