[Bug tree-optimization/34027] [4.3 regression] -Os code size nearly doubled

[rguenth at gcc dot gnu dot org]

------- Comment #8 from rguenth at gcc dot gnu dot org  2007-11-12 13:24 -------
Subject: Bug 34027

Author: rguenth
Date: Mon Nov 12 13:24:06 2007
New Revision: 130097

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=130097
Log:
2007-11-12  Richard Guenther  <rguenther@suse.de>

        PR middle-end/34027
        * fold-const.c (fold_binary): Fold n - (n / m) * m to n % m.
        (fold_binary): Fold unsinged FLOOR_DIV_EXPR to TRUNC_DIV_EXPR.

        * gcc.dg/pr34027-1.c: New testcase.
        * gcc.dg/pr34027-2.c: Likewise.

Added:
    trunk/gcc/testsuite/gcc.dg/pr34027-1.c
    trunk/gcc/testsuite/gcc.dg/pr34027-2.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/fold-const.c
    trunk/gcc/testsuite/ChangeLog


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34027