Re: [patch, libgfortran] PR53029 missed optimization in internal read (without implied-do-loop)

[Jerry DeLisle]

On 05/29/2017 09:51 AM, Thomas Koenig wrote:

Hi Jerry,

Regression tested on x86_64. I have added a test case which will check the execution time of the loop. The previous results of the REAd were correct, just took a long time on large arrays.

OK for trunk?

OK.

It might be good if you followed Manfred's suggestion and turned
down the timeout to something like 0.5 seconds.

Thanks for the patch!

I would also consider backporting, the speedup is just so
large.  What do others think?

Regards

     Thomas

Committed.

        A       gcc/testsuite/gfortran.dg/read_5.f90
        M       gcc/testsuite/ChangeLog
        M       libgfortran/ChangeLog
        M       libgfortran/io/list_read.c
Committed r248577

Thanks,

Jerry