http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55467
Hans-Peter Nilsson <hp at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |REOPENED
Last reconfirmed| |2012-11-26
Resolution|INVALID |
Ever Confirmed|0 |1
--- Comment #5 from Hans-Peter Nilsson <hp at gcc dot gnu.org> 2012-11-26
14:13:24 UTC ---
(In reply to comment #4)
> That is not a bug. Without volatile and nothing using the result of the asm,
> both the second inline asm and x[0] = 25 store are optimized away (by RTL
> DSE1), there is not even anything on the line 14 anymore.
> As it is optimized away quite late, the variable x is not optimized away, it
> exists, just is completely uninitialized. What you see in the debugger than
> is
> exactly what you would see before the x[0] = 25; store then.
Your reply matches only for the attachment named pr55467-1.c. I'd hope to see
the value being optimized out, but ok.
A bit too quick on closing, methinks: see the (first) attachment, named
gcc.dg/guality/pr55467-2.c, where x[0] is used at the return (after being
magically changed by the asm). So, reopened.
