public inbox for gcc-bugs@sourceware.org
help / color / mirror / Atom feed
From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/52976] [4.8 Regression] Revision 186384 breaks the polyhedron tests aermod.f90 and doduc.f90 at -O3 -ffast-math
Date: Fri, 13 Apr 2012 22:11:00 -0000	[thread overview]
Message-ID: <bug-52976-4-K8MOL02z72@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-52976-4@http.gcc.gnu.org/bugzilla/>

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52976

--- Comment #5 from Dominique d'Humieres <dominiq at lps dot ens.fr> 2012-04-13 22:11:24 UTC ---
The patch in comment #4 fixes doduc.f90, but not aermod.f90 (the sources are
available at http://polyhedron.com/pb05-lin64-f90bench_SBhtml ). A reduced test
for aermod is

[macbook] lin/test% cat grdurban_red.f90
      SUBROUTINE GRDURBAN(URBWSTR, ZIURB, GRIDHT)

      IMPLICIT NONE
      INTEGER :: I
      REAL :: SW2, URBWSTR, ZIURB, GRIDHT(87)

      SAVE 

      SW2 = 1.6*(GRIDHT(I)/ZIURB)**0.667*URBWSTR**2

      END
[macbook] lin/test% gfc -c -O3 -ffast-math grdurban_red.f90
grdurban_red.f90: In function 'grdurban':
grdurban_red.f90:1:0: error: definition in block 2 follows the use
       SUBROUTINE GRDURBAN(URBWSTR, ZIURB, GRIDHT)
 ^
for SSA_NAME: reassocpow.4_1 in statement:
D.1875_14 = reassocpow.4_1 * D.1874_13;
grdurban_red.f90:1:0: internal compiler error: verify_ssa failed
       SUBROUTINE GRDURBAN(URBWSTR, ZIURB, GRIDHT)
 ^

Note that the ICE disappears if I remove the SAVE.


  parent reply	other threads:[~2012-04-13 22:11 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-04-13 15:49 [Bug tree-optimization/52976] New: " dominiq at lps dot ens.fr
2012-04-13 18:12 ` [Bug tree-optimization/52976] " dominiq at lps dot ens.fr
2012-04-13 19:07 ` wschmidt at gcc dot gnu.org
2012-04-13 19:46 ` wschmidt at gcc dot gnu.org
2012-04-13 20:47 ` wschmidt at gcc dot gnu.org
2012-04-13 22:11 ` dominiq at lps dot ens.fr [this message]
2012-04-14 15:06 ` wschmidt at gcc dot gnu.org
2012-04-14 15:14 ` wschmidt at gcc dot gnu.org
2012-04-14 16:54 ` wschmidt at gcc dot gnu.org
2012-04-15 10:42 ` dominiq at lps dot ens.fr
2012-04-16  9:47 ` rguenth at gcc dot gnu.org
2012-04-16 12:16 ` wschmidt at gcc dot gnu.org
2012-04-16 12:18 ` wschmidt at gcc dot gnu.org
2012-04-16 13:24 ` rguenth at gcc dot gnu.org
2012-04-16 13:54 ` vincenzo.innocente at cern dot ch
2012-04-16 13:58 ` rguenther at suse dot de
2012-04-18 10:46 ` rguenth at gcc dot gnu.org
2012-04-18 12:31 ` wschmidt at gcc dot gnu.org
2012-04-18 12:49 ` wschmidt at gcc dot gnu.org

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=bug-52976-4-K8MOL02z72@http.gcc.gnu.org/bugzilla/ \
    --to=gcc-bugzilla@gcc.gnu.org \
    --cc=gcc-bugs@gcc.gnu.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).