[Bug c++/107097] Implement floating point excess precision in C++

["cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107097

--- Comment #8 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Jakub Jelinek <jakub@gcc.gnu.org>:

https://gcc.gnu.org/g:16ec267063c8ce60769888d4097bcd158410adc8

commit r13-3291-g16ec267063c8ce60769888d4097bcd158410adc8
Author: Jakub Jelinek <jakub@redhat.com>
Date:   Fri Oct 14 09:33:23 2022 +0200

    c++: Excess precision for ? int : float or int == float [PR107097, PR82071,
PR87390]

    The following incremental patch implements the C11 behavior (for all C++
    versions) for
    cond ? int : float
    cond ? float : int
    int cmp float
    float cmp int
    where int is any integral type, float any floating point type with
    excess precision and cmp ==, !=, >, <, >=, <= and <=>.

    2022-10-14  Jakub Jelinek  <jakub@redhat.com>

            PR c/82071
            PR c/87390
            PR c++/107097
    gcc/cp/
            * cp-tree.h (cp_ep_convert_and_check): Remove.
            * cvt.cc (cp_ep_convert_and_check): Remove.
            * call.cc (build_conditional_expr): Use excess precision for ?:
with
            one arm floating and another integral.  Don't convert first to
            semantic result type from integral types.
            (convert_like_internal): Don't call cp_ep_convert_and_check,
instead
            just strip EXCESS_PRECISION_EXPR before calling
cp_convert_and_check
            or cp_convert.
            * typeck.cc (cp_build_binary_op): Set may_need_excess_precision
            for comparisons or SPACESHIP_EXPR with at least one operand
integral.
            Don't compute semantic_result_type if build_type is non-NULL.  Call
            cp_convert_and_check instead of cp_ep_convert_and_check.
    gcc/testsuite/
            * gcc.target/i386/excess-precision-8.c: For C++ wrap abort and
            exit declarations into extern "C" block.
            * gcc.target/i386/excess-precision-10.c: Likewise.
            * g++.target/i386/excess-precision-7.C: Remove.
            * g++.target/i386/excess-precision-8.C: New test.
            * g++.target/i386/excess-precision-9.C: Remove.
            * g++.target/i386/excess-precision-10.C: New test.
            * g++.target/i386/excess-precision-12.C: New test.