[Bug ipa/44563] GCC uses a lot of RAM when compiling a large numbers of functions

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=44563

--- Comment #32 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Fri Mar 13 08:52:51 2015
New Revision: 221410

URL: https://gcc.gnu.org/viewcvs?rev=221410&root=gcc&view=rev
Log:
2015-03-12  Richard Biener  <rguenther@suse.de>

    PR middle-end/44563
    * tree-inline.c (gimple_expand_calls_inline): Walk BB backwards
    to avoid quadratic behavior with inline expansion splitting blocks.
    * tree-cfgcleanup.c (cleanup_tree_cfg_bb): Do not merge block
    with the successor if the predecessor will be merged with it.
    * tree-cfg.c (gimple_can_merge_blocks_p): We can't merge the
    entry block with its successor.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/tree-cfg.c
    trunk/gcc/tree-cfgcleanup.c
    trunk/gcc/tree-inline.c