[Bug ipa/68981] [4.9/5/6 Regression] g++.dg/ipa/pr60640-4.C FAILs with -ftree-vectorize

2016-01-12 Thread rguenth at gcc dot gnu.org 
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68981

Richard Biener  changed:

   What|Removed |Added

 Status|ASSIGNED|RESOLVED
 Resolution|--- |DUPLICATE

--- Comment #2 from Richard Biener  ---
Program received signal SIGSEGV, Segmentation fault.
B::foo (this=0xfffd, p=4) at t.ii:21
21go = fi;
(gdb) disassemble
Dump of assembler code for function B::foo(int):
=> 0x08048600 <+0>: mov0x8(%eax),%eax
   0x08048603 <+3>: mov%eax,0x804a088
   0x08048608 <+8>: ret

I don't see any vectorization happening and on the GCC 5 branch (where I can
reproduce only) the segfault also happens with -fno-tree-vectorize.  Note
that -O3 already includes -ftree-vectorize.

So to me this looks like a dup of PR66616, fixed on the branches as well after
that backport.

*** This bug has been marked as a duplicate of bug 66616 ***

[Bug ipa/68981] [4.9/5/6 Regression] g++.dg/ipa/pr60640-4.C FAILs with -ftree-vectorize

2016-01-12 Thread zsojka at seznam dot cz 
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68981

--- Comment #3 from Zdenek Sojka  ---
(In reply to Richard Biener from comment #2)
> I don't see any vectorization happening and on the GCC 5 branch (where I can
> reproduce only) the segfault also happens with -fno-tree-vectorize.  Note
> that -O3 already includes -ftree-vectorize.

-ftree-vectorize was needed for reproducing.
I am not trying to explain why it was so.

> So to me this looks like a dup of PR66616, fixed on the branches as well
> after
> that backport.

Indeed.

[Bug ipa/68981] [4.9/5/6 Regression] g++.dg/ipa/pr60640-4.C FAILs with -ftree-vectorize

2016-01-11 Thread rguenth at gcc dot gnu.org 
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68981

Richard Biener  changed:

   What|Removed |Added

 Target||i?86-*-*
 Status|UNCONFIRMED |ASSIGNED
   Last reconfirmed||2016-01-11
   Assignee|unassigned at gcc dot gnu.org  |rguenth at gcc dot 
gnu.org
 Ever confirmed|0   |1

--- Comment #1 from Richard Biener  ---
I will have a look.

[Bug ipa/68981] [4.9/5/6 Regression] g++.dg/ipa/pr60640-4.C FAILs with -ftree-vectorize

2016-01-08 Thread rguenth at gcc dot gnu.org 
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68981

Richard Biener  changed:

   What|Removed |Added

   Target Milestone|--- |4.9.4