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* decl.c (compatible_signatures_p): New function. The intended purpose is to check if two function signatures for a call-site and a callee are compatible enough for the call to be valid. The underlying purpose is to check if a call to a mapped builtin is using the right interface. The current code actually does not check antyhing - this a placeholder for future refinements. (gnat_to_gnu_entity) <E_Subprogram_Call>: Add preliminary bits to handle builtin calls for convention Intrinsic. * gigi.h (builtin_decl_for): Declare (new function). * utils.c (gnat_install_builtins): Install the target specific builtins. (builtin_decl_for): New function, provide a dummy body for now. From-SVN: r92833
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