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Diffstat (limited to 'gcc-4.2.1/gcc/ada/exp_vfpt.adb')
| -rw-r--r-- | gcc-4.2.1/gcc/ada/exp_vfpt.adb | 569 |
1 files changed, 0 insertions, 569 deletions
diff --git a/gcc-4.2.1/gcc/ada/exp_vfpt.adb b/gcc-4.2.1/gcc/ada/exp_vfpt.adb deleted file mode 100644 index de2fae104..000000000 --- a/gcc-4.2.1/gcc/ada/exp_vfpt.adb +++ /dev/null @@ -1,569 +0,0 @@ ------------------------------------------------------------------------------- --- -- --- GNAT COMPILER COMPONENTS -- --- -- --- E X P _ V F P T -- --- -- --- B o d y -- --- -- --- Copyright (C) 1997-2005, Free Software Foundation, Inc. -- --- -- --- GNAT is free software; you can redistribute it and/or modify it under -- --- terms of the GNU General Public License as published by the Free Soft- -- --- ware Foundation; either version 2, or (at your option) any later ver- -- --- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- --- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- --- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License -- --- for more details. You should have received a copy of the GNU General -- --- Public License distributed with GNAT; see file COPYING. If not, write -- --- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, -- --- Boston, MA 02110-1301, USA. -- --- -- --- GNAT was originally developed by the GNAT team at New York University. -- --- Extensive contributions were provided by Ada Core Technologies Inc. -- --- -- ------------------------------------------------------------------------------- - -with Atree; use Atree; -with Einfo; use Einfo; -with Nlists; use Nlists; -with Nmake; use Nmake; -with Rtsfind; use Rtsfind; -with Sem_Res; use Sem_Res; -with Sinfo; use Sinfo; -with Stand; use Stand; -with Tbuild; use Tbuild; -with Ttypef; use Ttypef; -with Uintp; use Uintp; -with Urealp; use Urealp; - -package body Exp_VFpt is - - ---------------------- - -- Expand_Vax_Arith -- - ---------------------- - - procedure Expand_Vax_Arith (N : Node_Id) is - Loc : constant Source_Ptr := Sloc (N); - Typ : constant Entity_Id := Base_Type (Etype (N)); - Typc : Character; - Atyp : Entity_Id; - Func : RE_Id; - Args : List_Id; - - begin - -- Get arithmetic type, note that we do D stuff in G - - if Digits_Value (Typ) = VAXFF_Digits then - Typc := 'F'; - Atyp := RTE (RE_F); - else - Typc := 'G'; - Atyp := RTE (RE_G); - end if; - - case Nkind (N) is - - when N_Op_Abs => - if Typc = 'F' then - Func := RE_Abs_F; - else - Func := RE_Abs_G; - end if; - - when N_Op_Add => - if Typc = 'F' then - Func := RE_Add_F; - else - Func := RE_Add_G; - end if; - - when N_Op_Divide => - if Typc = 'F' then - Func := RE_Div_F; - else - Func := RE_Div_G; - end if; - - when N_Op_Multiply => - if Typc = 'F' then - Func := RE_Mul_F; - else - Func := RE_Mul_G; - end if; - - when N_Op_Minus => - if Typc = 'F' then - Func := RE_Neg_F; - else - Func := RE_Neg_G; - end if; - - when N_Op_Subtract => - if Typc = 'F' then - Func := RE_Sub_F; - else - Func := RE_Sub_G; - end if; - - when others => - Func := RE_Null; - raise Program_Error; - - end case; - - Args := New_List; - - if Nkind (N) in N_Binary_Op then - Append_To (Args, - Convert_To (Atyp, Left_Opnd (N))); - end if; - - Append_To (Args, - Convert_To (Atyp, Right_Opnd (N))); - - Rewrite (N, - Convert_To (Typ, - Make_Function_Call (Loc, - Name => New_Occurrence_Of (RTE (Func), Loc), - Parameter_Associations => Args))); - - Analyze_And_Resolve (N, Typ, Suppress => All_Checks); - end Expand_Vax_Arith; - - --------------------------- - -- Expand_Vax_Comparison -- - --------------------------- - - procedure Expand_Vax_Comparison (N : Node_Id) is - Loc : constant Source_Ptr := Sloc (N); - Typ : constant Entity_Id := Base_Type (Etype (Left_Opnd (N))); - Typc : Character; - Func : RE_Id; - Atyp : Entity_Id; - Revrs : Boolean := False; - Args : List_Id; - - begin - -- Get arithmetic type, note that we do D stuff in G - - if Digits_Value (Typ) = VAXFF_Digits then - Typc := 'F'; - Atyp := RTE (RE_F); - else - Typc := 'G'; - Atyp := RTE (RE_G); - end if; - - case Nkind (N) is - - when N_Op_Eq => - if Typc = 'F' then - Func := RE_Eq_F; - else - Func := RE_Eq_G; - end if; - - when N_Op_Ge => - if Typc = 'F' then - Func := RE_Le_F; - else - Func := RE_Le_G; - end if; - - Revrs := True; - - when N_Op_Gt => - if Typc = 'F' then - Func := RE_Lt_F; - else - Func := RE_Lt_G; - end if; - - Revrs := True; - - when N_Op_Le => - if Typc = 'F' then - Func := RE_Le_F; - else - Func := RE_Le_G; - end if; - - when N_Op_Lt => - if Typc = 'F' then - Func := RE_Lt_F; - else - Func := RE_Lt_G; - end if; - - when N_Op_Ne => - if Typc = 'F' then - Func := RE_Ne_F; - else - Func := RE_Ne_G; - end if; - - when others => - Func := RE_Null; - raise Program_Error; - - end case; - - if not Revrs then - Args := New_List ( - Convert_To (Atyp, Left_Opnd (N)), - Convert_To (Atyp, Right_Opnd (N))); - - else - Args := New_List ( - Convert_To (Atyp, Right_Opnd (N)), - Convert_To (Atyp, Left_Opnd (N))); - end if; - - Rewrite (N, - Make_Function_Call (Loc, - Name => New_Occurrence_Of (RTE (Func), Loc), - Parameter_Associations => Args)); - - Analyze_And_Resolve (N, Standard_Boolean, Suppress => All_Checks); - end Expand_Vax_Comparison; - - --------------------------- - -- Expand_Vax_Conversion -- - --------------------------- - - procedure Expand_Vax_Conversion (N : Node_Id) is - Loc : constant Source_Ptr := Sloc (N); - Expr : constant Node_Id := Expression (N); - S_Typ : constant Entity_Id := Base_Type (Etype (Expr)); - T_Typ : constant Entity_Id := Base_Type (Etype (N)); - - CallS : RE_Id; - CallT : RE_Id; - Func : RE_Id; - - function Call_Type (T : Entity_Id; Otyp : Entity_Id) return RE_Id; - -- Given one of the two types T, determines the coresponding call - -- type, i.e. the type to be used for the call (or the result of - -- the call). The actual operand is converted to (or from) this type. - -- Otyp is the other type, which is useful in figuring out the result. - -- The result returned is the RE_Id value for the type entity. - - function Equivalent_Integer_Type (T : Entity_Id) return Entity_Id; - -- Find the predefined integer type that has the same size as the - -- fixed-point type T, for use in fixed/float conversions. - - --------------- - -- Call_Type -- - --------------- - - function Call_Type (T : Entity_Id; Otyp : Entity_Id) return RE_Id is - begin - -- Vax float formats - - if Vax_Float (T) then - if Digits_Value (T) = VAXFF_Digits then - return RE_F; - - elsif Digits_Value (T) = VAXGF_Digits then - return RE_G; - - -- For D_Float, leave it as D float if the other operand is - -- G_Float, since this is the one conversion that is properly - -- supported for D_Float, but otherwise, use G_Float. - - else pragma Assert (Digits_Value (T) = VAXDF_Digits); - - if Vax_Float (Otyp) - and then Digits_Value (Otyp) = VAXGF_Digits - then - return RE_D; - else - return RE_G; - end if; - end if; - - -- For all discrete types, use 64-bit integer - - elsif Is_Discrete_Type (T) then - return RE_Q; - - -- For all real types (other than Vax float format), we use the - -- IEEE float-type which corresponds in length to the other type - -- (which is Vax Float). - - else pragma Assert (Is_Real_Type (T)); - - if Digits_Value (Otyp) = VAXFF_Digits then - return RE_S; - else - return RE_T; - end if; - end if; - end Call_Type; - - ------------------------------------------------- - -- Expand_Multiply_Fixed_By_Fixed_Giving_Fixed -- - ------------------------------------------------- - - function Equivalent_Integer_Type (T : Entity_Id) return Entity_Id is - begin - if Esize (T) = Esize (Standard_Long_Long_Integer) then - return Standard_Long_Long_Integer; - elsif Esize (T) = Esize (Standard_Long_Integer) then - return Standard_Long_Integer; - else - return Standard_Integer; - end if; - end Equivalent_Integer_Type; - - -- Start of processing for Expand_Vax_Conversion; - - begin - -- If input and output are the same Vax type, we change the - -- conversion to be an unchecked conversion and that's it. - - if Vax_Float (S_Typ) and then Vax_Float (T_Typ) - and then Digits_Value (S_Typ) = Digits_Value (T_Typ) - then - Rewrite (N, - Unchecked_Convert_To (T_Typ, Expr)); - - -- Case of conversion of fixed-point type to Vax_Float type - - elsif Is_Fixed_Point_Type (S_Typ) then - - -- If Conversion_OK set, then we introduce an intermediate IEEE - -- target type since we are expecting the code generator to handle - -- the case of integer to IEEE float. - - if Conversion_OK (N) then - Rewrite (N, - Convert_To (T_Typ, OK_Convert_To (Universal_Real, Expr))); - - -- Otherwise, convert the scaled integer value to the target type, - -- and multiply by 'Small of type. - - else - Rewrite (N, - Make_Op_Multiply (Loc, - Left_Opnd => - Make_Type_Conversion (Loc, - Subtype_Mark => New_Occurrence_Of (T_Typ, Loc), - Expression => - Unchecked_Convert_To ( - Equivalent_Integer_Type (S_Typ), Expr)), - Right_Opnd => - Make_Real_Literal (Loc, Realval => Small_Value (S_Typ)))); - end if; - - -- Case of conversion of Vax_Float type to fixed-point type - - elsif Is_Fixed_Point_Type (T_Typ) then - - -- If Conversion_OK set, then we introduce an intermediate IEEE - -- target type, since we are expecting the code generator to handle - -- the case of IEEE float to integer. - - if Conversion_OK (N) then - Rewrite (N, - OK_Convert_To (T_Typ, Convert_To (Universal_Real, Expr))); - - -- Otherwise, multiply value by 'small of type, and convert to the - -- corresponding integer type. - - else - Rewrite (N, - Unchecked_Convert_To (T_Typ, - Make_Type_Conversion (Loc, - Subtype_Mark => - New_Occurrence_Of (Equivalent_Integer_Type (T_Typ), Loc), - Expression => - Make_Op_Multiply (Loc, - Left_Opnd => Expr, - Right_Opnd => - Make_Real_Literal (Loc, - Realval => Ureal_1 / Small_Value (T_Typ)))))); - end if; - - -- All other cases - - else - -- Compute types for call - - CallS := Call_Type (S_Typ, T_Typ); - CallT := Call_Type (T_Typ, S_Typ); - - -- Get function and its types - - if CallS = RE_D and then CallT = RE_G then - Func := RE_D_To_G; - - elsif CallS = RE_G and then CallT = RE_D then - Func := RE_G_To_D; - - elsif CallS = RE_G and then CallT = RE_F then - Func := RE_G_To_F; - - elsif CallS = RE_F and then CallT = RE_G then - Func := RE_F_To_G; - - elsif CallS = RE_F and then CallT = RE_S then - Func := RE_F_To_S; - - elsif CallS = RE_S and then CallT = RE_F then - Func := RE_S_To_F; - - elsif CallS = RE_G and then CallT = RE_T then - Func := RE_G_To_T; - - elsif CallS = RE_T and then CallT = RE_G then - Func := RE_T_To_G; - - elsif CallS = RE_F and then CallT = RE_Q then - Func := RE_F_To_Q; - - elsif CallS = RE_Q and then CallT = RE_F then - Func := RE_Q_To_F; - - elsif CallS = RE_G and then CallT = RE_Q then - Func := RE_G_To_Q; - - else pragma Assert (CallS = RE_Q and then CallT = RE_G); - Func := RE_Q_To_G; - end if; - - Rewrite (N, - Convert_To (T_Typ, - Make_Function_Call (Loc, - Name => New_Occurrence_Of (RTE (Func), Loc), - Parameter_Associations => New_List ( - Convert_To (RTE (CallS), Expr))))); - end if; - - Analyze_And_Resolve (N, T_Typ, Suppress => All_Checks); - end Expand_Vax_Conversion; - - ----------------------------- - -- Expand_Vax_Real_Literal -- - ----------------------------- - - procedure Expand_Vax_Real_Literal (N : Node_Id) is - Loc : constant Source_Ptr := Sloc (N); - Typ : constant Entity_Id := Etype (N); - Btyp : constant Entity_Id := Base_Type (Typ); - Stat : constant Boolean := Is_Static_Expression (N); - Nod : Node_Id; - - RE_Source : RE_Id; - RE_Target : RE_Id; - RE_Fncall : RE_Id; - -- Entities for source, target and function call in conversion - - begin - -- We do not know how to convert Vax format real literals, so what - -- we do is to convert these to be IEEE literals, and introduce the - -- necessary conversion operation. - - if Vax_Float (Btyp) then - -- What we want to construct here is - - -- x!(y_to_z (1.0E0)) - - -- where - - -- x is the base type of the literal (Btyp) - - -- y_to_z is - - -- s_to_f for F_Float - -- t_to_g for G_Float - -- t_to_d for D_Float - - -- The literal is typed as S (for F_Float) or T otherwise - - -- We do all our own construction, analysis, and expansion here, - -- since things are at too low a level to use Analyze or Expand - -- to get this built (we get circularities and other strange - -- problems if we try!) - - if Digits_Value (Btyp) = VAXFF_Digits then - RE_Source := RE_S; - RE_Target := RE_F; - RE_Fncall := RE_S_To_F; - - elsif Digits_Value (Btyp) = VAXDF_Digits then - RE_Source := RE_T; - RE_Target := RE_D; - RE_Fncall := RE_T_To_D; - - else pragma Assert (Digits_Value (Btyp) = VAXGF_Digits); - RE_Source := RE_T; - RE_Target := RE_G; - RE_Fncall := RE_T_To_G; - end if; - - Nod := Relocate_Node (N); - - Set_Etype (Nod, RTE (RE_Source)); - Set_Analyzed (Nod, True); - - Nod := - Make_Function_Call (Loc, - Name => New_Occurrence_Of (RTE (RE_Fncall), Loc), - Parameter_Associations => New_List (Nod)); - - Set_Etype (Nod, RTE (RE_Target)); - Set_Analyzed (Nod, True); - - Nod := - Make_Unchecked_Type_Conversion (Loc, - Subtype_Mark => New_Occurrence_Of (Typ, Loc), - Expression => Nod); - - Set_Etype (Nod, Typ); - Set_Analyzed (Nod, True); - Rewrite (N, Nod); - - -- This odd expression is still a static expression. Note that - -- the routine Sem_Eval.Expr_Value_R understands this. - - Set_Is_Static_Expression (N, Stat); - end if; - end Expand_Vax_Real_Literal; - - ---------------------- - -- Expand_Vax_Valid -- - ---------------------- - - procedure Expand_Vax_Valid (N : Node_Id) is - Loc : constant Source_Ptr := Sloc (N); - Pref : constant Node_Id := Prefix (N); - Ptyp : constant Entity_Id := Root_Type (Etype (Pref)); - Rtyp : constant Entity_Id := Etype (N); - Vtyp : RE_Id; - Func : RE_Id; - - begin - if Digits_Value (Ptyp) = VAXFF_Digits then - Func := RE_Valid_F; - Vtyp := RE_F; - elsif Digits_Value (Ptyp) = VAXDF_Digits then - Func := RE_Valid_D; - Vtyp := RE_D; - else pragma Assert (Digits_Value (Ptyp) = VAXGF_Digits); - Func := RE_Valid_G; - Vtyp := RE_G; - end if; - - Rewrite (N, - Convert_To (Rtyp, - Make_Function_Call (Loc, - Name => New_Occurrence_Of (RTE (Func), Loc), - Parameter_Associations => New_List ( - Convert_To (RTE (Vtyp), Pref))))); - - Analyze_And_Resolve (N); - end Expand_Vax_Valid; - -end Exp_VFpt; |