[Bug middle-end/63155] [4.9/5 Regression] memory hog

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63155

--- Comment #10 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Thu Mar 19 13:36:18 2015
New Revision: 221515

URL: https://gcc.gnu.org/viewcvs?rev=221515&root=gcc&view=rev
Log:
2015-03-19  Richard Biener  <rguenther@suse.de>

    Revert
    2015-03-10  Richard Biener  <rguenther@suse.de>

    PR middle-end/63155
    * tree-ssa-coalesce.h (verify_ssa_coalescing): Declare.
    * tree-ssa-coalesce.c: Include timevar.h.
    (attempt_coalesce): Handle graph being NULL.
    (coalesce_partitions): Call verify_ssa_coalescing if ENABLE_CHECKING.
    Split out abnormal coalescing to ...
    (perform_abnormal_coalescing): ... this function.
    (coalesce_ssa_name): Perform abnormal coalescing without computing
    live/conflict.
    (verify_ssa_coalescing_worker): New function.
    (verify_ssa_coalescing): Likewise.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/tree-ssa-coalesce.c
    trunk/gcc/tree-ssa-coalesce.h