[Bug middle-end/82479] missing popcount builtin detection

[kugan at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82479

--- Comment #13 from kugan at gcc dot gnu.org ---
Author: kugan
Date: Sat Jun 16 21:39:31 2018
New Revision: 261682

URL: https://gcc.gnu.org/viewcvs?rev=261682&root=gcc&view=rev
Log:
gcc/ChangeLog:

2018-06-16  Kugan Vivekanandarajah  <kug...@linaro.org>

        PR middle-end/82479
        * ipa-fnsummary.c (will_be_nonconstant_expr_predicate): Handle
CALL_EXPR.
        * tree-scalar-evolution.c (interpret_expr): Likewise.
        (expression_expensive_p): Likewise.
        * tree-ssa-loop-ivopts.c (contains_abnormal_ssa_name_p): Likewise.
        * tree-ssa-loop-niter.c (number_of_iterations_popcount): New.
        (number_of_iterations_exit_assumptions): Use
number_of_iterations_popcount.
        (ssa_defined_by_minus_one_stmt_p): New.

gcc/testsuite/ChangeLog:

2018-06-16  Kugan Vivekanandarajah  <kug...@linaro.org>

        PR middle-end/82479
        * gcc.dg/tree-ssa/popcount.c: New test.
        * gcc.dg/tree-ssa/popcount2.c: New test.


Added:
    trunk/gcc/testsuite/gcc.dg/tree-ssa/popcount.c
    trunk/gcc/testsuite/gcc.dg/tree-ssa/popcount2.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/ipa-fnsummary.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-scalar-evolution.c
    trunk/gcc/tree-ssa-loop-ivopts.c
    trunk/gcc/tree-ssa-loop-niter.c