[Bug middle-end/53823] [4.8 Regression] FAIL: gcc.c-torture/execute/930921-1.c execution at -O0 and -O1

[danglin at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53823

--- Comment #24 from John David Anglin <danglin at gcc dot gnu.org> 2012-08-18 23:16:57 UTC ---
Author: danglin
Date: Sat Aug 18 23:16:53 2012
New Revision: 190505

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=190505
Log:
    PR middle-end/53823
    * expmed.c (expand_mult): Skip synth_mult for negative coefficients
    if the mode is larger than a wide int and it is too costly to multiply
    by a positive multiplier and negate the result.


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/expmed.c