diff options
Diffstat (limited to 'gcc/fortran/trans-intrinsic.cc')
| -rw-r--r-- | gcc/fortran/trans-intrinsic.cc | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/gcc/fortran/trans-intrinsic.cc b/gcc/fortran/trans-intrinsic.cc index 9d91278..1c45f75 100644 --- a/gcc/fortran/trans-intrinsic.cc +++ b/gcc/fortran/trans-intrinsic.cc @@ -10013,6 +10013,83 @@ conv_intrinsic_ieee_copy_sign (gfc_se * se, gfc_expr * expr) } +/* Generate code for IEEE_CLASS. */ + +static void +conv_intrinsic_ieee_class (gfc_se *se, gfc_expr *expr) +{ + tree arg, c, t1, t2, t3, t4; + + /* Convert arg, evaluate it only once. */ + conv_ieee_function_args (se, expr, &arg, 1); + arg = gfc_evaluate_now (arg, &se->pre); + + c = build_call_expr_loc (input_location, + builtin_decl_explicit (BUILT_IN_FPCLASSIFY), 6, + build_int_cst (integer_type_node, IEEE_QUIET_NAN), + build_int_cst (integer_type_node, + IEEE_POSITIVE_INF), + build_int_cst (integer_type_node, + IEEE_POSITIVE_NORMAL), + build_int_cst (integer_type_node, + IEEE_POSITIVE_DENORMAL), + build_int_cst (integer_type_node, + IEEE_POSITIVE_ZERO), + arg); + c = gfc_evaluate_now (c, &se->pre); + t1 = fold_build2_loc (input_location, EQ_EXPR, logical_type_node, + c, build_int_cst (integer_type_node, + IEEE_QUIET_NAN)); + t2 = build_call_expr_loc (input_location, + builtin_decl_explicit (BUILT_IN_ISSIGNALING), 1, + arg); + t2 = fold_build2_loc (input_location, NE_EXPR, logical_type_node, + t2, build_zero_cst (TREE_TYPE (t2))); + t1 = fold_build2_loc (input_location, TRUTH_AND_EXPR, + logical_type_node, t1, t2); + t3 = fold_build2_loc (input_location, GE_EXPR, logical_type_node, + c, build_int_cst (integer_type_node, + IEEE_POSITIVE_ZERO)); + t4 = build_call_expr_loc (input_location, + builtin_decl_explicit (BUILT_IN_SIGNBIT), 1, + arg); + t4 = fold_build2_loc (input_location, NE_EXPR, logical_type_node, + t4, build_zero_cst (TREE_TYPE (t4))); + t3 = fold_build2_loc (input_location, TRUTH_AND_EXPR, + logical_type_node, t3, t4); + int s = IEEE_NEGATIVE_ZERO + IEEE_POSITIVE_ZERO; + gcc_assert (IEEE_NEGATIVE_INF == s - IEEE_POSITIVE_INF); + gcc_assert (IEEE_NEGATIVE_NORMAL == s - IEEE_POSITIVE_NORMAL); + gcc_assert (IEEE_NEGATIVE_DENORMAL == s - IEEE_POSITIVE_DENORMAL); + gcc_assert (IEEE_NEGATIVE_SUBNORMAL == s - IEEE_POSITIVE_SUBNORMAL); + gcc_assert (IEEE_NEGATIVE_ZERO == s - IEEE_POSITIVE_ZERO); + t4 = fold_build2_loc (input_location, MINUS_EXPR, TREE_TYPE (c), + build_int_cst (TREE_TYPE (c), s), c); + t3 = fold_build3_loc (input_location, COND_EXPR, TREE_TYPE (c), + t3, t4, c); + t1 = fold_build3_loc (input_location, COND_EXPR, TREE_TYPE (c), t1, + build_int_cst (TREE_TYPE (c), IEEE_SIGNALING_NAN), + t3); + tree type = gfc_typenode_for_spec (&expr->ts); + /* Perform a quick sanity check that the return type is + IEEE_CLASS_TYPE derived type defined in + libgfortran/ieee/ieee_arithmetic.F90 + Primarily check that it is a derived type with a single + member in it. */ + gcc_assert (TREE_CODE (type) == RECORD_TYPE); + tree field = NULL_TREE; + for (tree f = TYPE_FIELDS (type); f != NULL_TREE; f = DECL_CHAIN (f)) + if (TREE_CODE (f) == FIELD_DECL) + { + gcc_assert (field == NULL_TREE); + field = f; + } + gcc_assert (field); + t1 = fold_convert (TREE_TYPE (field), t1); + se->expr = build_constructor_single (type, field, t1); +} + + /* Generate code for an intrinsic function from the IEEE_ARITHMETIC module. */ @@ -10043,6 +10120,8 @@ gfc_conv_ieee_arithmetic_function (gfc_se * se, gfc_expr * expr) conv_intrinsic_ieee_logb_rint (se, expr, BUILT_IN_LOGB); else if (startswith (name, "_gfortran_ieee_rint")) conv_intrinsic_ieee_logb_rint (se, expr, BUILT_IN_RINT); + else if (startswith (name, "ieee_class_") && ISDIGIT (name[11])) + conv_intrinsic_ieee_class (se, expr); else /* It is not among the functions we translate directly. We return false, so a library function call is emitted. */ |