* peephole2 and insn question
@ 2002-10-22 9:50 Dmitry
2002-10-22 12:12 ` Richard Henderson
0 siblings, 1 reply; 2+ messages in thread
From: Dmitry @ 2002-10-22 9:50 UTC (permalink / raw)
To: gcc
HI Folks,
Just faced with some problem:
If I define peephole2 and use 'insn' variable in condition, to which
instruction parrern in a sequence 'insn' refers?
From gccint.info (Node: define_peephole) follows, that insn refers to the last
insn being matched.
How about peephole2 ?
If I stick on a condition in a debugger I see that in p2 'insn' refers to the
first insn being matched.
Am I wrong?
cheers,
Dmitry.
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^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: peephole2 and insn question
2002-10-22 9:50 peephole2 and insn question Dmitry
@ 2002-10-22 12:12 ` Richard Henderson
0 siblings, 0 replies; 2+ messages in thread
From: Richard Henderson @ 2002-10-22 12:12 UTC (permalink / raw)
To: Dmitry; +Cc: gcc
On Tue, Oct 22, 2002 at 04:51:33PM +0400, Dmitry wrote:
> If I define peephole2 and use 'insn' variable in condition, to which
> instruction parrern in a sequence 'insn' refers?
I don't remember; I think the first.
Use peep2_next_insn(i), 0 <= i < n, to refer to the
N instructions of the sequence.
r~
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