[Bug c/73450] [7 Regression] wrong code at -Os and above on x86_64-linux-gnu in both 32-bit and 64-bit modes (executable hangs)

[amker at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=73450

--- Comment #4 from amker at gcc dot gnu.org ---
Author: amker
Date: Tue Aug 16 09:13:50 2016
New Revision: 239494

URL: https://gcc.gnu.org/viewcvs?rev=239494&root=gcc&view=rev
Log:
        PR tree-optimization/72817
        PR tree-optimization/73450
        * tree-ssa-loop-niter.c (number_of_iterations_ne): Check
        multiple_of_p for adjusted IV.base.

        gcc/testsuite
        * gcc.dg/tree-ssa/pr72817.c: New test.
        * gcc.dg/tree-ssa/pr73450.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/tree-ssa/pr72817.c
    trunk/gcc/testsuite/gcc.dg/tree-ssa/pr73450.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-loop-niter.c