https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69709
Jakub Jelinek changed:
What|Removed |Added
Status|WAITING |RESOLVED
Resolution|---
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69709
--- Comment #14 from Andreas Krebbel ---
Author: krebbel
Date: Fri Feb 26 18:03:51 2016
New Revision: 233752
URL: https://gcc.gnu.org/viewcvs?rev=233752&root=gcc&view=rev
Log:
S/390: PR69709 Fix risbg splitter
This fixes a wrong code generation
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69709
--- Comment #13 from Andreas Krebbel ---
Yes. This was problem. Your patch fixes this. Thanks!
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69709
--- Comment #12 from Richard Henderson ---
Created attachment 37799
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=37799&action=edit
example patch
Or, for the purposes of combine, better like so.
This avoids creating a third (move) insn, w
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69709
Richard Henderson changed:
What|Removed |Added
CC||rth at gcc dot gnu.org
--- Comment #
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69709
--- Comment #10 from Dominik Vogt ---
We've located the bug in the s390 backend. No further help is needed.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69709
--- Comment #9 from Dominik Vogt ---
(-fpeel-loops is activated by -fprofile-use, so this is the connection to
profilesbootstrap.)
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69709
--- Comment #8 from Dominik Vogt ---
Created attachment 37790
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=37790&action=edit
Test case
The option -fpeel-loops triggers the bug. The attached program has a different
result with -fpeel-loo
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69709
--- Comment #7 from Dominik Vogt ---
The stage1 compiler does something wrong when compiling gcc/real.c (with
-fprofile-generate). The function div_significands() (inlined into
do_divide()) returns a wrong result due to bad register usage in thi
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69709
--- Comment #6 from Jakub Jelinek ---
FYI, profiledbootstrap works for me including Ada,
see
http://s390.koji.fedoraproject.org/packages/gcc/6.0.0/0.12.fc24/data/logs/s390x/build.log
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69709
--- Comment #5 from Dominik Vogt ---
@Matthias: So far it only happens for me when building a gcc rpm from source on
a (very slow VM), but not when compiling the same sources. Is there anything
special about your build machine or environment on
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69709
--- Comment #4 from Matthias Klose ---
still seen today; normal bootstrap works.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69709
Dominik Vogt changed:
What|Removed |Added
CC||vogt at linux dot vnet.ibm.com
--- Commen
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69709
Jakub Jelinek changed:
What|Removed |Added
Status|UNCONFIRMED |WAITING
Last reconfirmed|
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69709
Jakub Jelinek changed:
What|Removed |Added
CC||jakub at gcc dot gnu.org
--- Comment #1
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69709
Richard Biener changed:
What|Removed |Added
Keywords||build
Priority|P3
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