Re: [gimplefe] hacking pass manager

[Richard Biener <richard dot guenther at gmail dot com>]

On June 29, 2016 6:20:29 PM GMT+02:00, Prathamesh Kulkarni <prathamesh.kulkarni@linaro.org> wrote:
>On 18 June 2016 at 12:02, Prasad Ghangal <prasad.ghangal@gmail.com>
>wrote:
>> Hi,
>>
>> I tried hacking pass manager to execute only given passes. For this I
>> am adding new member as opt_pass *custom_pass_list to the function
>> structure to store passes need to execute and providing the
>> custom_pass_list to execute_pass_list() function instead of all
>passes
>>
>> for test case like-
>>
>> int a;
>> void __GIMPLE (execute ("tree-ccp1", "tree-fre1")) foo()
>> {
>> bb_1:
>>   a = 1 + a;
>> }
>>
>> it will execute only given passes i.e. ccp1 and fre1 pass on the
>function
>>
>> and for test case like -
>>
>> int a;
>> void __GIMPLE (startwith ("tree-ccp1")) foo()
>> {
>> bb_1:
>>   a = 1 + a;
>> }
>>
>> it will act as a entry point to the pipeline and will execute passes
>> starting from given pass.
>Bike-shedding:
>Would it make sense to have syntax for defining pass ranges to execute
>?
>for instance:
>void __GIMPLE(execute (pass_start : pass_end))
>which would execute all the passes within range [pass_start, pass_end],
>which would be convenient if the range is large.

But it would rely on a particular pass pipeline, f.e. pass-start appearing before pass-end.

Currently control doesn't work 100% as it only replaces all_optimizations but not lowering passes or early opts, nor IPA opts.

Richard.

>Thanks,
>Prathamesh
>>
>>
>>
>> Thanks,
>> Prasad Ghangal