Patchwork Speed up gfortran.dg/vect/fast-math-pr38968.f90 testcase

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Submitter Jakub Jelinek
Date Dec. 11, 2012, 6:41 p.m.
Message ID <20121211184106.GW2315@tucnak.redhat.com>
Download mbox | patch
Permalink /patch/205291/
State New
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Comments

Jakub Jelinek - Dec. 11, 2012, 6:41 p.m.
Hi!

Lately this testcase often timesout for me on a busy box,
I don't see a point iterating 2000^3 times, with 400^3 it is much faster
and I still could reproduce the problem before the corresponding fix
and the vectorizer r145171 fix fixed it.

Bootstrapped/regtested on x86_64-linux and i686-linux, ok for trunk?

2012-12-11  Jakub Jelinek  <jakub@redhat.com>

	* gfortran.dg/vect/fast-math-pr38968.f90: Decrease n
	from 2000 to 400.


	Jakub
Richard Guenther - Dec. 12, 2012, 9:20 a.m.
On Tue, 11 Dec 2012, Jakub Jelinek wrote:

> Hi!
> 
> Lately this testcase often timesout for me on a busy box,
> I don't see a point iterating 2000^3 times, with 400^3 it is much faster
> and I still could reproduce the problem before the corresponding fix
> and the vectorizer r145171 fix fixed it.
> 
> Bootstrapped/regtested on x86_64-linux and i686-linux, ok for trunk?

Ok.

Thanks,
Richard.

> 2012-12-11  Jakub Jelinek  <jakub@redhat.com>
> 
> 	* gfortran.dg/vect/fast-math-pr38968.f90: Decrease n
> 	from 2000 to 400.
> 
> --- gcc/testsuite/gfortran.dg/vect/fast-math-pr38968.f90.jj	2011-01-25 18:39:53.000000000 +0100
> +++ gcc/testsuite/gfortran.dg/vect/fast-math-pr38968.f90	2012-12-11 16:19:45.222105217 +0100
> @@ -7,7 +7,7 @@
>  program mymatmul
>    implicit none
>    integer, parameter :: kp = 4
> -  integer, parameter :: n = 2000
> +  integer, parameter :: n = 400
>    real(kp), dimension(n,n) :: rr, ri
>    complex(kp), dimension(n,n) :: a,b,c
>    real :: t1, t2
> 
> 	Jakub
> 
>

Patch

--- gcc/testsuite/gfortran.dg/vect/fast-math-pr38968.f90.jj	2011-01-25 18:39:53.000000000 +0100
+++ gcc/testsuite/gfortran.dg/vect/fast-math-pr38968.f90	2012-12-11 16:19:45.222105217 +0100
@@ -7,7 +7,7 @@ 
 program mymatmul
   implicit none
   integer, parameter :: kp = 4
-  integer, parameter :: n = 2000
+  integer, parameter :: n = 400
   real(kp), dimension(n,n) :: rr, ri
   complex(kp), dimension(n,n) :: a,b,c
   real :: t1, t2