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Re: Abt an RTL expression
- From: Revital1 Eres <ERES at il dot ibm dot com>
- To: "Mohamed Shafi" <shafitvm at gmail dot com>
- Cc: gcc at gcc dot gnu dot org
- Date: Tue, 31 Oct 2006 13:12:14 +0200
- Subject: Re: Abt an RTL expression
gcc-owner@gcc.gnu.org wrote on 31/10/2006 12:01:20:
> Hello all,
>
> Can anyone tell me what the below expression means ?
>
>
> (insn 38 37 40 4 (parallel [
> (asm_operands/v ("") ("") 0 [ //line
2
> (reg:SI 32 [ s5.1 ])
> //line 3
> ]
> [
> (asm_input:SI ("r"))
> //line 6
> ] ("test55.c") 42)
> //line 7
> (clobber (mem:BLK (scratch) [0 A8]))
> //line 8
> ]) -1 (nil)
> (nil))
>
> in line 2, what is the 0 for?
>
> what does line 3 mean?what is it purpose ?
>
> In line 7 test55.c is the file name . why is it needed and what is 42?
ASM_OPERANDS operands contains
line number and source file. Please see
http://gcc.gnu.org/onlinedocs/gccint/Assembler.html#Assembler
for the structure of assembler instructions.
> In line 8 what does [0 A8] mean?
[0 A8] contains information on the memory expression.
Please see the last sentence in
http://gcc.gnu.org/ml/gcc/2006-10/msg00462.html.
Hope it helps,
Revital