* condition codes question
@ 2002-10-29 10:24 Dmitry
2002-10-31 11:41 ` Richard Henderson
0 siblings, 1 reply; 2+ messages in thread
From: Dmitry @ 2002-10-29 10:24 UTC (permalink / raw)
To: gcc
Fellows,
My arch has no SImode comparison instructions. So, I have to perform them as
subsi and then branch. In this case a scratch register required. But, if the
CC is NE or EQ, sub insn and scratch are not required.
I can define two insn patterns - one for ne/eq comparisons and another for
others. Then call them from expander. But there I have to know a condition
code.
Therefore the question is:
Is it possible to get a condition code in CC expander?
Thanks in advance,
Dmitry.
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: condition codes question
2002-10-29 10:24 condition codes question Dmitry
@ 2002-10-31 11:41 ` Richard Henderson
0 siblings, 0 replies; 2+ messages in thread
From: Richard Henderson @ 2002-10-31 11:41 UTC (permalink / raw)
To: Dmitry; +Cc: gcc
On Tue, Oct 29, 2002 at 02:21:02PM +0300, Dmitry wrote:
> Is it possible to get a condition code in CC expander?
Nope. See how this is handled in the x86 backend.
r~
^ permalink raw reply [flat|nested] 2+ messages in thread
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