[Bug rtl-optimization/24899] [4.1/4.2 Regression] loop.c miscompiles libgnomecanvas

[jakub at gcc dot gnu dot org]

------- Comment #24 from jakub at gcc dot gnu dot org  2005-12-16 12:12 -------
Subject: Bug 24899

Author: jakub
Date: Fri Dec 16 12:12:41 2005
New Revision: 108642

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=108642
Log:
        PR rtl-optimization/24899
        * loop.c (strength_reduce): Don't reduce giv that is not always
        computable and where add_val or mult_val can trap.

        * gcc.c-torture/execute/20051215-1.c: New test.

Added:
    trunk/gcc/testsuite/gcc.c-torture/execute/20051215-1.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/loop.c
    trunk/gcc/testsuite/ChangeLog


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24899