Question about rtx format for insn, call_insn and junp_insn

[kito]

sorry I get incorrect gcc version info

the correct version which doing dump is gcc 4.1.2

I dump rtl with the gcc 4.4.1 have the line info

thanks for you reply

2010/5/20 Ian Lance Taylor <iant@google.com>:
> kito <npickito@gmail.com> writes:
>
>> Hello every body
>> I have read the rtl.h & rtl.c,
>> but I don't realize the format for  insn, call_insn and junp_insn
>>
>> it's define in rtl.def
>>
>> DEF_RTL_EXPR(JUMP_INSN, "jump_insn", "iuuBieie0", RTX_INSN)
>>
>> and it's dump by some real program
>>
>> (jump_insn 14  /*  i */
>>            13         /*  u */
>>            15         /* u  */
>>            1           /* B */
>>            (set (pc)
>>                 (if_then_else (le (reg:CCGC 17 flags)
>>                                   (const_int 0 [0x0]))
>>                               (label_ref 24)
>>                               (pc)))                        /*   e?? */
>>           -1     /* i? */
>>           (nil)  /* e?  */
>>           (nil)  /* 0? */ )
>>
>> so my question is where is the i after B ??
>
> Which program is doing the dump?  The generator programs (genattrtab,
> etc.) produce different dumps from the compilers.
>
> The 'i' after the 'B' represents an insn locator, a value of type
> source_location aka location_t aka unsigned int.  A generator program
> will never print that value.  A compiler will print it only if it has
> a value--if the instruction has a known location.  It will be printed
> as filename:lineno when available.
>
> The corresponding code in print-rtl.c is:
>
>      case 'i':
>        if (i == 4 && INSN_P (in_rtx))
>          {
> #ifndef GENERATOR_FILE
>            /*  Pretty-print insn locators.  Ignore scoping as it is mostly
>                redundant with line number information and do not print anything
>                when there is no location information available.  */
>            if (INSN_LOCATOR (in_rtx) && insn_file (in_rtx))
>              fprintf(outfile, " %s:%i", insn_file (in_rtx), insn_line (in_rtx));
> #endif
>
> Ian
>