[Bug fortran/29383] Fortran 2003/F95[TR15580:1999]: Floating point exception (IEEE) support

[fxcoudert at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=29383

--- Comment #15 from Francois-Xavier Coudert <fxcoudert at gcc dot gnu.org> ---
Author: fxcoudert
Date: Sat Jun 28 14:17:41 2014
New Revision: 212102

URL: https://gcc.gnu.org/viewcvs?rev=212102&root=gcc&view=rev
Log:
    PR fortran/29383

gcc/fortran/
    * gfortran.h (gfc_simplify_ieee_selected_real_kind): New prototype.
    * libgfortran.h (GFC_FPE_*): Use simple integer values, valid in
    both C and Fortran.
    * expr.c (gfc_check_init_expr): Simplify IEEE_SELECTED_REAL_KIND.
    * simplify.c (gfc_simplify_ieee_selected_real_kind): New function.
    * module.c (mio_symbol): Keep track of symbols which came from
    intrinsic modules.
    (gfc_use_module): Keep track of the IEEE modules.
    * trans-decl.c (gfc_get_symbol_decl): Adjust code since
    we have new intrinsic modules.
    (gfc_build_builtin_function_decls): Build decls for
    ieee_procedure_entry and ieee_procedure_exit.
    (is_from_ieee_module, is_ieee_module_used, save_fp_state,
    restore_fp_state): New functions.
    (gfc_generate_function_code): Save and restore floating-point
    state on procedure entry/exit, when IEEE modules are used.
    * intrinsic.texi: Document the IEEE modules.

libgfortran/
    * configure.host: Add checks for IEEE support, rework priorities.
    * configure.ac: Define IEEE_SUPPORT, check for fpsetsticky and
    fpresetsticky.
    * configure: Regenerate.
    * Makefile.am: Build new ieee files, install IEEE_* modules.
    * Makefile.in: Regenerate.
    * gfortran.map (GFORTRAN_1.6): Add new symbols.
    * libgfortran.h (get_fpu_trap_exceptions, set_fpu_trap_exceptions,
    support_fpu_trap, set_fpu_except_flags, support_fpu_flag,
    support_fpu_rounding_mode, get_fpu_state, set_fpu_state): New
    prototypes.
    * config/fpu-*.h (get_fpu_trap_exceptions,
    set_fpu_trap_exceptions, support_fpu_trap, set_fpu_except_flags,
    support_fpu_flag, support_fpu_rounding_mode, get_fpu_state,
    set_fpu_state): New functions.
    * ieee/ieee_features.F90: New file.
    * ieee/ieee_exceptions.F90: New file.
    * ieee/ieee_arithmetic.F90: New file.
    * ieee/ieee_helper.c: New file.

gcc/testsuite/
    * lib/target-supports.exp (check_effective_target_fortran_ieee): 
    New function.
    * gfortran.dg/ieee/ieee.exp: New file.
    * gfortran.dg/ieee/ieee_1.F90: New file.
    * gfortran.dg/ieee/ieee_2.f90: New file.
    * gfortran.dg/ieee/ieee_3.f90: New file.
    * gfortran.dg/ieee/ieee_4.f90: New file.
    * gfortran.dg/ieee/ieee_5.f90: New file.
    * gfortran.dg/ieee/ieee_6.f90: New file.
    * gfortran.dg/ieee/ieee_7.f90: New file.
    * gfortran.dg/ieee/ieee_rounding_1.f90: New file.


Added:
    trunk/gcc/testsuite/gfortran.dg/ieee/
    trunk/gcc/testsuite/gfortran.dg/ieee/ieee.exp
    trunk/gcc/testsuite/gfortran.dg/ieee/ieee_1.F90
    trunk/gcc/testsuite/gfortran.dg/ieee/ieee_2.f90
    trunk/gcc/testsuite/gfortran.dg/ieee/ieee_3.f90
    trunk/gcc/testsuite/gfortran.dg/ieee/ieee_4.f90
    trunk/gcc/testsuite/gfortran.dg/ieee/ieee_5.f90
    trunk/gcc/testsuite/gfortran.dg/ieee/ieee_6.f90
    trunk/gcc/testsuite/gfortran.dg/ieee/ieee_7.f90
    trunk/gcc/testsuite/gfortran.dg/ieee/ieee_rounding_1.f90
    trunk/libgfortran/ieee/
    trunk/libgfortran/ieee/ieee_arithmetic.F90
    trunk/libgfortran/ieee/ieee_exceptions.F90
    trunk/libgfortran/ieee/ieee_features.F90
    trunk/libgfortran/ieee/ieee_helper.c
Modified:
    trunk/gcc/fortran/ChangeLog
    trunk/gcc/fortran/expr.c
    trunk/gcc/fortran/gfortran.h
    trunk/gcc/fortran/intrinsic.texi
    trunk/gcc/fortran/libgfortran.h
    trunk/gcc/fortran/module.c
    trunk/gcc/fortran/simplify.c
    trunk/gcc/fortran/trans-decl.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/lib/target-supports.exp
    trunk/libgfortran/ChangeLog
    trunk/libgfortran/Makefile.am
    trunk/libgfortran/Makefile.in
    trunk/libgfortran/config/fpu-387.h
    trunk/libgfortran/config/fpu-aix.h
    trunk/libgfortran/config/fpu-generic.h
    trunk/libgfortran/config/fpu-glibc.h
    trunk/libgfortran/config/fpu-sysv.h
    trunk/libgfortran/configure
    trunk/libgfortran/configure.ac
    trunk/libgfortran/configure.host
    trunk/libgfortran/gfortran.map
    trunk/libgfortran/libgfortran.h