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

	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.

From-SVN: r212102

1 files changed, 25 insertions, 1 deletions

diff --git a/libgfortran/libgfortran.h b/libgfortran/libgfortran.h
index c8c09f6910c..8179ceab739 100644
--- a/libgfortran/libgfortran.h
+++ b/libgfortran/libgfortran.h
@@ -754,15 +754,39 @@ internal_proto(gf_strerror);
 extern void set_fpu (void);
 internal_proto(set_fpu);
 
+extern int get_fpu_trap_exceptions (void);
+internal_proto(get_fpu_trap_exceptions);
+
+extern void set_fpu_trap_exceptions (int, int);
+internal_proto(set_fpu_trap_exceptions);
+
+extern int support_fpu_trap (int);
+internal_proto(support_fpu_trap);
+
 extern int get_fpu_except_flags (void);
 internal_proto(get_fpu_except_flags);
 
-extern void set_fpu_rounding_mode (int round);
+extern void set_fpu_except_flags (int, int);
+internal_proto(set_fpu_except_flags);
+
+extern int support_fpu_flag (int);
+internal_proto(support_fpu_flag);
+
+extern void set_fpu_rounding_mode (int);
 internal_proto(set_fpu_rounding_mode);
 
 extern int get_fpu_rounding_mode (void);
 internal_proto(get_fpu_rounding_mode);
 
+extern int support_fpu_rounding_mode (int);
+internal_proto(support_fpu_rounding_mode);
+
+extern void get_fpu_state (void *);
+internal_proto(get_fpu_state);
+
+extern void set_fpu_state (void *);
+internal_proto(set_fpu_state);
+
 /* memory.c */
 
 extern void *xmalloc (size_t) __attribute__ ((malloc));