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.



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

1 files changed, 9 insertions, 0 deletions

diff --git a/libgfortran/configure.ac b/libgfortran/configure.ac
index 57e26ce9e48..be4b7beba04 100644
--- a/libgfortran/configure.ac
+++ b/libgfortran/configure.ac
@@ -530,6 +530,10 @@ AC_CHECK_TYPES([fp_rnd,fp_rnd_t], [], [], [[
 #include <math.h>
 ]])
 
+# Check whether we have fpsetsticky or fpresetsticky
+AC_CHECK_FUNC([fpsetsticky],[have_fpsetsticky=yes AC_DEFINE([HAVE_FPSETSTICKY],[1],[fpsetsticky is present])])
+AC_CHECK_FUNC([fpresetsticky],[have_fpresetsticky=yes AC_DEFINE([HAVE_FPRESETSTICKY],[1],[fpresetsticky is present])])
+
 # Check for AIX fp_trap and fp_enable
 AC_CHECK_FUNC([fp_trap],[have_fp_trap=yes AC_DEFINE([HAVE_FP_TRAP],[1],[fp_trap is present])])
 AC_CHECK_FUNC([fp_enable],[have_fp_enable=yes AC_DEFINE([HAVE_FP_ENABLE],[1],[fp_enable is present])])
@@ -539,9 +543,14 @@ AC_CHECK_FUNC([fp_enable],[have_fp_enable=yes AC_DEFINE([HAVE_FP_ENABLE],[1],[fp
 # build chain.
 . ${srcdir}/configure.host
 AC_MSG_NOTICE([FPU dependent file will be ${fpu_host}.h])
+AC_MSG_NOTICE([Support for IEEE modules: ${ieee_support}])
 FPU_HOST_HEADER=config/${fpu_host}.h
 AC_SUBST(FPU_HOST_HEADER)
 
+# Whether we will build the IEEE modules
+AM_CONDITIONAL(IEEE_SUPPORT,[test x${ieee_support} = xyes])
+AC_SUBST(IEEE_SUPPORT)
+
 # Some targets require additional compiler options for IEEE compatibility.
 IEEE_FLAGS="${ieee_flags}"
 AC_SUBST(IEEE_FLAGS)