[Bug middle-end/50060] intrinsics not folded by the middle-end

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=50060

--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Wed Jul 20 14:00:02 2016
New Revision: 238520

URL: https://gcc.gnu.org/viewcvs?rev=238520&root=gcc&view=rev
Log:
        PR c++/50060
        * constexpr.c (cxx_eval_builtin_function_call): Pass false as lval
        when evaluating call arguments.  Use fold_builtin_call_array instead
        of fold_build_call_array_loc, return t if it returns NULL.  Otherwise
        check the result with potential_constant_expression and call
        cxx_eval_constant_expression on it.

        * g++.dg/cpp0x/constexpr-50060.C: New test.
        * g++.dg/cpp1y/constexpr-50060.C: New test.

Added:
    trunk/gcc/testsuite/g++.dg/cpp0x/constexpr-50060.C
    trunk/gcc/testsuite/g++.dg/cpp1y/constexpr-50060.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/constexpr.c
    trunk/gcc/testsuite/ChangeLog