[Bug tree-optimization/50744] [4.7 Regression] ice in good_cloning_opportunity_p

[jamborm at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50744

--- Comment #7 from Martin Jambor <jamborm at gcc dot gnu.org> 2011-12-07 10:30:55 UTC ---
Author: jamborm
Date: Wed Dec  7 10:30:49 2011
New Revision: 182076

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=182076
Log:
2011-12-07  Martin Jambor  <mjambor@suse.cz>

    PR tree-optimization/50744
    * ipa-cp.c (good_cloning_opportunity_p): Assert size_cost is positive,
    compute evaluation in HOST_WIDEST_INT.
    (safe_add): New function
    (propagate_effects): Use safe_add to accumulate effects.

    * testsuite/gcc.dg/ipa/pr50744.c: New test.


Added:
    trunk/gcc/testsuite/gcc.dg/ipa/pr50744.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/ipa-cp.c
    trunk/gcc/testsuite/ChangeLog