[Bug tree-optimization/88074] [7 Regression] g++ hangs on math expression

[jb at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88074

--- Comment #38 from Janne Blomqvist <jb at gcc dot gnu.org> ---
Author: jb
Date: Wed Nov 20 20:08:29 2019
New Revision: 278525

URL: https://gcc.gnu.org/viewcvs?rev=278525&root=gcc&view=rev
Log:
PR 92463 MPFR modernization: Revert r269139

Commit r269139 fixed an accidental dependency on MPFR 3.0. As we now
require at least MPFR 3.1.0+ we can revert it and instead use the
simpler MPFR 3.0+ code.

ChangeLog entry of the original commit was:

2019-02-23  David Malcolm  <dmalcolm@redhat.com>
            Jakub Jelinek  <jakub@redhat.com>

        PR middle-end/88074
        * simplify.c (norm2_do_sqrt, gfc_simplify_norm2): Use
        mpfr_number_p && !mpfr_zero_p instead of mpfr_regular_p.
        (norm2_add_squared): Likewise.  Use mp_exp_t rather than mpfr_exp_t.

ChangeLog for this commit:

2019-11-20  Janne Blomqvist  <jb@gcc.gnu.org>

        PR fortran/92463
        Revert r269139
        * simplify.c (norm2_do_sqrt, gfc_simplify_norm2): Use
        mpfr_regular_p instead of mpfr_number_p && !mpfr_zero_p.
        (norm2_add_squared): Likewise.  Use mpfr_exp_t rather than
        mp_exp_t.

Modified:
    trunk/gcc/fortran/ChangeLog
    trunk/gcc/fortran/simplify.c