[Bug tree-optimization/64130] vrp: handle non zero constant divided by range cannot be zero.

Sun, 28 Jun 2015 17:16:54 -0700 

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64130

--- Comment #11 from kugan at gcc dot gnu.org ---
Author: kugan
Date: Mon Jun 29 00:15:41 2015
New Revision: 225108

URL: https://gcc.gnu.org/viewcvs?rev=225108&root=gcc&view=rev
Log:
gcc/ChangeLog:

2015-06-29  Kugan Vivekanandarajah  <kug...@linaro.org>

        PR middle-end/64130
        * tree-vrp.c (extract_range_from_binary_expr_1): For unsigned
        division, compute max and min when value ranges for dividend and
        divisor are available.


gcc/testsuite/ChangeLog:

2015-06-29  Kugan Vivekanandarajah  <kug...@linaro.org>

        PR middle-end/64130
        * gcc.dg/tree-ssa/pr64130.c: New test.


Added:
    trunk/gcc/testsuite/gcc.dg/tree-ssa/pr64130.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-vrp.c

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