On 10/20/14 14:30, Bernd Schmidt wrote:
ptx assembly requires that declarations are written for undefined
variables. This adds that functionality.
Bernd
008-undefdecl.diff
gcc/
* target.def (assemble_undefined_decl): New hooks.
* hooks.c (hook_void_FILEptr_constcharptr_const_tree): New function.
* hooks.h (hook_void_FILEptr_constcharptr_const_tree): Declare.
* doc/tm.texi.in (TARGET_ASM_ASSEMBLE_UNDEFINED_DECL): Add.
* doc/tm.texi: Regenerate.
* output.h (assemble_undefined_decl): Declare.
(get_fnname_from_decl): Declare.
* varasm.c (assemble_undefined_decl): New function.
(get_fnname_from_decl): New function.
* final.c (rest_of_handle_final): Use it.
* varpool.c (varpool_output_variables): Call assemble_undefined_decl
for nodes without a definition.
Does this need to happen at the use site, or can it be deferred?
THe PA had to do something similar. We built up a vector of every
external object in ASM_OUTPUT_EXTERNAL, but did not emit anything.
Then in ASM_FILE_END, we walked that vector and anything that was
actually referenced (as opposed to just just declared) we would emit the
magic .IMPORT lines.
Jeff
