Hello! I have a question regarding the Haifa Scheduler in gcc-3.2.3 and your help would be very appreciated.
Goal: I would need to get the assembly representation for a single instruction in haifa-sched.c. The reason for this is that it would be important to get the opcode which will be produced by a single instruction (ie ADDU or something) for chosing the right candidate in the ready-list. For instructions that are represented by patterns evaluating to more lines of asm-code it would be necessary to get at least the very first and the last opcode. It would be best to have all opcodes for sure. In its final pass gcc-3.2.3 emits assembly code using functions in final.c. As far as I have seen the work is always done for a single function at once using the following calls (main.c) main --> (toplev.c) toplev_main --> (toplev.c) do_compile --> (toplev.c) compile-file --> (c-parse.c) yyparse --> then ie: (c-decl.c) finish_function --> (c-decl.c) c_expand_body --> (toplev.c) rest_of_compilation --> where there are several passes and in the end: (final.c) final --> (final.c) final_scan_insn I would need something similar for outputting a single instruction such that the internal representation of the program being parsed is not hurt. It seems that I somehow need that functionality or some suitable macro for use within the scheduler. Somehow I will have to invoke the output part of the patterns assigned to an 'rtx insn', but I just can't figure out how to do that. A Macro returning some char* would be fine; or some function that writes to Disk (not to asm_out_file but somewhere else) would still do the job. Please feel free to correct mistakes I have made in the description above; I did not find too much documentation regarding that problem. Thanks a lot, Philipp Glatz. -- Philipp Maria Glatz student of telematics @ TUGraz [EMAIL PROTECTED] [EMAIL PROTECTED]
