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Re: [Patch PR44576]: Don't do further analysis if we could know prefetching is not benefitial

From: Jakub Jelinek <jakub at redhat dot com>
To: Christian Borntraeger <borntraeger at de dot ibm dot com>
Cc: Sebastian Pop <sebpop at gmail dot com>, "Fang, Changpeng" <Changpeng dot Fang at amd dot com>, Zdenek Dvorak <rakdver at kam dot mff dot cuni dot cz>, Richard Guenther <richard dot guenther at gmail dot com>, "gcc-patches at gcc dot gnu dot org" <gcc-patches at gcc dot gnu dot org>, "uweigand at de dot ibm dot com" <uweigand at de dot ibm dot com>
Date: Mon, 12 Jul 2010 12:33:54 +0200
Subject: Re: [Patch PR44576]: Don't do further analysis if we could know prefetching is not benefitial
References: <D4C76825A6780047854A11E93CDE84D02F7769@SAUSEXMBP01.amd.com> <201007110726.15038.borntraeger@de.ibm.com> <AANLkTim5MTKAAGC0qrXDbtwcts-uIS1BnMlv2HhbJHgK@mail.gmail.com> <201007121229.46685.borntraeger@de.ibm.com>
Reply-to: Jakub Jelinek <jakub at redhat dot com>

On Mon, Jul 12, 2010 at 12:29:46PM +0200, Christian Borntraeger wrote:
> Am Montag 12 Juli 2010, 00:52:10 schrieb Sebastian Pop:
> Index: gcc/testsuite/gcc.dg/prefetch-empty.c
> ===================================================================
> *** /dev/null
> --- gcc/testsuite/gcc.dg/tree-ssa/prefetch-empty.c
> ***************
> *** 0 ****
> --- 1,24 ----
> + /* This test case causes tree_num_loop_insns to return 0.  This has created
> +    problems when this value was used as divisor.  */
> + /* { dg-do compile } */
> + /* { dg-options "-c -O1 -fprefetch-loop-arrays -march=core2" { target { i?86-*-* x86_64-*-* } } } */
> + /* { dg-options "-c -O1 -fprefetch-loop-arrays -march=z10" { target { s390x-*-* } } } */

-c doesn't belong into dg-options.

	Jakub

Follow-Ups:
- Re: [Patch PR44576]: Don't do further analysis if we could know prefetching is not benefitial
  - From: Christian Borntraeger

References:
- [Patch PR44576]: Don't do further analysis if we could know prefetching is not benefitial
  - From: Fang, Changpeng
- Re: [Patch PR44576]: Don't do further analysis if we could know prefetching is not benefitial
  - From: Christian Borntraeger
- Re: [Patch PR44576]: Don't do further analysis if we could know prefetching is not benefitial
  - From: Sebastian Pop
- Re: [Patch PR44576]: Don't do further analysis if we could know prefetching is not benefitial
  - From: Christian Borntraeger

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