[Bug rtl-optimization/47414] [4.6 Regression] wrong code with -O -freorder-blocks -fschedule-insns2 -fno-early-inlining -fstrict-aliasing -ftracer

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47414

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |jakub at gcc dot gnu.org

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-01-24 15:02:22 UTC ---
rtx_refs_may_alias_p (x=0x7ffff1969318, mem=0x7ffff1968360, tbaa_p=1 '\001')
for x
(mem/s/f:DI (reg/v/f:DI 2 cx [orig:59 nul ] [59]) [3 nul_23->D.2090.next+0 S8
A64])
and mem
(mem/s/f/c:DI (reg/f:DI 7 sp) [3 MEM[(struct A *)&s].next+0 S8 A64])
returns 0, although they clearly do alias.
*.alias says:
nul_23 = { NULL ESCAPED NONLOCAL s HEAP HEAP HEAP } same as nul_29