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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.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@212102 138bc75d-0d04-0410-961f-82ee72b054a4
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