[Bug target/34888] Stack patterns for AVR not optimal

[rth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34888

Richard Henderson <rth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
                 CC|                            |rth at gcc dot gnu.org
         Depends on|                            |49864
         AssignedTo|unassigned at gcc dot       |rth at gcc dot gnu.org
                   |gnu.org                     |

--- Comment #3 from Richard Henderson <rth at gcc dot gnu.org> 2011-08-02 21:04:52 UTC ---
(1) was fixed at r171295.
(2) is done.
(3) is done.
(4) is hopefully mostly irrelevant now, or shortly post PR49864.

As of r177196 (PR49881), we should be generating many more PUSH
insns than before, and queueing more stack space to be popped
all at once.  For the testcase mentioned in that PR, we seem to
wait for ~40 bytes to get pushed, and pop them all at once.