[Bug middle-end/68878] [6 Regression] 471.omnetpp in SPEC CPU 2006 is miscompiled with LTO

2015-12-28 Thread pinskia at gcc dot gnu.org
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68878 Andrew Pinski changed: What|Removed |Added Keywords||wrong-code Status|NEW

[Bug middle-end/68878] [6 Regression] 471.omnetpp in SPEC CPU 2006 is miscompiled with LTO

2015-12-15 Thread hubicka at gcc dot gnu.org
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68878 --- Comment #9 from Jan Hubicka --- Author: hubicka Date: Wed Dec 16 04:58:13 2015 New Revision: 231671 URL: https://gcc.gnu.org/viewcvs?rev=231671=gcc=rev Log: PR lto/68878 * lto-symtab.c (lto_symtab_prevailing_virtual_decl):

[Bug middle-end/68878] [6 Regression] 471.omnetpp in SPEC CPU 2006 is miscompiled with LTO

2015-12-14 Thread rguenth at gcc dot gnu.org
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68878 Richard Biener changed: What|Removed |Added Target Milestone|--- |6.0

[Bug middle-end/68878] [6 Regression] 471.omnetpp in SPEC CPU 2006 is miscompiled with LTO

2015-12-13 Thread hubicka at gcc dot gnu.org
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68878 --- Comment #8 from Jan Hubicka --- OK, the bug is caused by fact that new decl merging won't merge decls without symbol table entries. Devirtualization uses them and it means we lose a ctor. I have fix for the merging, but it seems to be a

[Bug middle-end/68878] [6 Regression] 471.omnetpp in SPEC CPU 2006 is miscompiled with LTO

2015-12-12 Thread hubicka at gcc dot gnu.org
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68878 Jan Hubicka changed: What|Removed |Added CC||hubicka at gcc dot gnu.org --- Comment #1

[Bug middle-end/68878] [6 Regression] 471.omnetpp in SPEC CPU 2006 is miscompiled with LTO

2015-12-12 Thread miyuki at gcc dot gnu.org
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68878 Mikhail Maltsev changed: What|Removed |Added Status|UNCONFIRMED |NEW Last reconfirmed|

[Bug middle-end/68878] [6 Regression] 471.omnetpp in SPEC CPU 2006 is miscompiled with LTO

2015-12-12 Thread miyuki at gcc dot gnu.org
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68878 --- Comment #3 from Mikhail Maltsev --- Created attachment 37013 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=37013=edit cSimpleModule ctor before transformation - good revision

[Bug middle-end/68878] [6 Regression] 471.omnetpp in SPEC CPU 2006 is miscompiled with LTO

2015-12-12 Thread miyuki at gcc dot gnu.org
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68878 --- Comment #4 from Mikhail Maltsev --- Created attachment 37014 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=37014=edit cSimpleModule ctor after transformation - good revision

[Bug middle-end/68878] [6 Regression] 471.omnetpp in SPEC CPU 2006 is miscompiled with LTO

2015-12-12 Thread miyuki at gcc dot gnu.org
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68878 --- Comment #5 from Mikhail Maltsev --- Created attachment 37015 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=37015=edit cSimpleModule ctor before transformation - bad revision Almost identical to "good revision"

[Bug middle-end/68878] [6 Regression] 471.omnetpp in SPEC CPU 2006 is miscompiled with LTO

2015-12-12 Thread miyuki at gcc dot gnu.org
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68878 --- Comment #6 from Mikhail Maltsev --- Created attachment 37016 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=37016=edit cSimpleModule ctor after transformation - bad revision Note that lots of code is removed and we fall through BB4 to

[Bug middle-end/68878] [6 Regression] 471.omnetpp in SPEC CPU 2006 is miscompiled with LTO

2015-12-12 Thread hubicka at ucw dot cz
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68878 --- Comment #7 from Jan Hubicka --- Looks like a result of redirection to builtin_unreachable. Can you check the WPA dumps if there is difference in redirections, please? Honza