[Bug middle-end/54704] [4.8 Regression] three-fold increase in compile-time between r191483 and r191569

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54704

Richard Guenther <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|bernds at gcc dot gnu.org   |
   Target Milestone|---                         |4.8.0
            Summary|three-fold increase in      |[4.8 Regression] three-fold
                   |compile-time between        |increase in compile-time
                   |r191483 and r191569         |between r191483 and r191569

--- Comment #2 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-09-25 14:09:37 UTC ---
 integration             :  40.95 (45%) usr   0.20 ( 6%) sys  41.31 (43%) wall 
 79770 kB ( 7%) ggc

thus the inliner (and here probably allocating new locations for the blocks)
is responsible.  With tramp3d you have around 1000 calls per assembler
instruction emitted.