* if-conversion passes
@ 2013-06-18 15:30 Abdul Wahid Memon
2013-06-18 18:41 ` Abdul Wahid Memon
0 siblings, 1 reply; 3+ messages in thread
From: Abdul Wahid Memon @ 2013-06-18 15:30 UTC (permalink / raw)
To: gcc-help
Hello all
Can someone please specify the pass related to if-conversion optimization?
Best regards
Abdul
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: if-conversion passes
2013-06-18 15:30 if-conversion passes Abdul Wahid Memon
@ 2013-06-18 18:41 ` Abdul Wahid Memon
2013-06-18 20:24 ` Ian Lance Taylor
0 siblings, 1 reply; 3+ messages in thread
From: Abdul Wahid Memon @ 2013-06-18 18:41 UTC (permalink / raw)
To: gcc-help
I searched in gcc source and found that there are three passes related
to if-conversion optimization in ifcvt.c i.e. ce1, ce2, and ce3.
My question is that if I compile any program with if-conversion
disabled then why ce1 is being executed?
$ -O3 -fno-if-conversion *.c
Regards
Abdul++
On Tue, Jun 18, 2013 at 5:30 PM, Abdul Wahid Memon
<engrwahidmemon@gmail.com> wrote:
> Hello all
>
> Can someone please specify the pass related to if-conversion optimization?
>
> Best regards
>
> Abdul
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: if-conversion passes
2013-06-18 18:41 ` Abdul Wahid Memon
@ 2013-06-18 20:24 ` Ian Lance Taylor
0 siblings, 0 replies; 3+ messages in thread
From: Ian Lance Taylor @ 2013-06-18 20:24 UTC (permalink / raw)
To: Abdul Wahid Memon; +Cc: gcc-help
On Tue, Jun 18, 2013 at 11:40 AM, Abdul Wahid Memon
<engrwahidmemon@gmail.com> wrote:
> I searched in gcc source and found that there are three passes related
> to if-conversion optimization in ifcvt.c i.e. ce1, ce2, and ce3.
>
> My question is that if I compile any program with if-conversion
> disabled then why ce1 is being executed?
>
> $ -O3 -fno-if-conversion *.c
If you use -fno-if-conversion then the ce1 pass won't do anything, but
it will still be executed. See rest_of_handle_if_conversion in
ifcvt.c.
Ian
^ permalink raw reply [flat|nested] 3+ messages in thread
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2013-06-18 15:30 if-conversion passes Abdul Wahid Memon
2013-06-18 18:41 ` Abdul Wahid Memon
2013-06-18 20:24 ` Ian Lance Taylor
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