On Thu, Nov 13, 2008 at 06:01:27PM +0200, Revital1 Eres wrote: > > Hello, > > I want print additional information for each branch insn which will be > used by the linker (for the SPU software i-cache), for example: > > brsl $lr,[EMAIL PROTECTED] > > and I wonder what is the best way to implement it in GCC. > > I defined a new note (in reg-notes.def) which can be attached to each > branch (using add_reg_note ()) and holds that info. I now want to print > the information of that note when emitting the branch, but I am not > sure exactly how to do that. Should I change the instruction template > to use the reg-notes?
Unfortunately, it is harder than it should be. The approach I would take is define FINAL_SCAN_INSN to set a global variable to the loop level, based on the notes being present or 0 if the note is not present. At present, FINAL_SCAN_INSN is not defined for the SPU. Then I would define PRINT_OPERAND_PUNCT_VALID_P to add a new punctuation character, such as '*' which will print the thing you want if the note is there, or nothing if it isn't. For example, here is the i386 version which adds 4 special formats: #define PRINT_OPERAND_PUNCT_VALID_P(CODE) \ ((CODE) == '*' || (CODE) == '+' || (CODE) == '&' || (CODE) == ';') Then in print_operand, add a new case statement for '*' to do what you want. -- Michael Meissner, IBM 4 Technology Place Drive, MS 2203A, Westford, MA, 01886, USA [EMAIL PROTECTED]
