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-- LLVM back-end for ortho.
-- Copyright (C) 2014 Tristan Gingold
--
-- GHDL is free software; you can redistribute it and/or modify it under
-- the terms of the GNU General Public License as published by the Free
-- Software Foundation; either version 2, or (at your option) any later
-- version.
--
-- GHDL is distributed in the hope that it will be useful, but WITHOUT 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
-- along with GCC; see the file COPYING. If not, write to the Free
-- Software Foundation, 59 Temple Place - Suite 330, Boston, MA
-- 02111-1307, USA.
with System;
with Interfaces; use Interfaces;
with Interfaces.C; use Interfaces.C;
with Ortho_Ident; use Ortho_Ident;
-- Interface to create nodes.
package Ortho_LLVM is
procedure Init (Filename : String; Filename_Length : Natural);
pragma Import (C, Init, "ortho_llvm_init");
type Opaque_Type is null record;
procedure Set_Optimization_Level (Level : Natural);
pragma Import (C, Set_Optimization_Level);
procedure Set_Debug_Level (Level : Natural);
pragma Import (C, Set_Debug_Level);
procedure Set_Dump_LLVM (Flag : Natural);
pragma Import (C, Set_Dump_LLVM);
procedure Set_Verify_LLVM (Flag : Natural);
pragma Import (C, Set_Verify_LLVM);
procedure Set_PIC_Flag (Flag : Natural);
pragma Import (C, Set_PIC_Flag);
procedure Generate_Object (Filename : System.Address);
pragma Import (C, Generate_Object);
procedure Generate_Assembly (Filename : System.Address);
pragma Import (C, Generate_Assembly);
procedure Generate_Llvm (Filename : System.Address);
pragma Import (C, Generate_Llvm);
procedure Generate_Bitcode (Filename : System.Address);
pragma Import (C, Generate_Bitcode);
-- LLVM specific: the module.
-- Module : ModuleRef;
-- Descriptor for the layout.
-- Target_Data : LLVM.Target.TargetDataRef;
-- Target_Machine : LLVM.TargetMachine.TargetMachineRef;
-- Optimization level
-- Optimization : LLVM.TargetMachine.CodeGenOptLevel :=
-- LLVM.TargetMachine.CodeGenLevelDefault;
private
pragma Convention (C, O_Storage);
-- No support for nested subprograms in LLVM.
Has_Nested_Subprograms : constant Boolean := False;
type TypeRef is access Opaque_Type;
pragma Convention (C, TypeRef);
type BasicBlockRef is access Opaque_Type;
pragma Convention (C, BasicBlockRef);
Null_BasicBlockRef : constant BasicBlockRef := null;
type ValueRef is access Opaque_Type;
pragma Convention (C, ValueRef);
Null_ValueRef : constant ValueRef := null;
type O_Tnode is access Opaque_Type;
pragma Convention (C, O_Tnode);
O_Tnode_Null : constant O_Tnode := null;
type O_Dnode is access Opaque_Type;
pragma Convention (C, O_Dnode);
type On_Decl_Kind is
(ON_Type_Decl, ON_Completed_Type_Decl,
ON_Const_Decl,
ON_Var_Decl, ON_Local_Decl, ON_Interface_Decl,
ON_Subprg_Decl,
ON_No_Decl);
-- type O_Dnode (Kind : On_Decl_Kind := ON_No_Decl) is record
-- Dtype : O_Tnode;
-- LLVM : ValueRef;
-- case Kind is
-- when ON_Var_Decl
-- | ON_Const_Decl
-- | ON_Local_Decl =>
-- null;
-- when ON_Subprg_Decl =>
-- Subprg_Id : O_Ident;
-- Nbr_Args : unsigned;
-- Subprg_Inters : O_Inter_Acc;
-- when ON_Interface_Decl =>
-- Inter : O_Inter_Acc;
-- when others =>
-- null;
-- end case;
-- end record;
O_Dnode_Null : constant O_Dnode := null;
type OF_Kind is (OF_None, OF_Record, OF_Union);
pragma Convention (C, OF_Kind);
type O_Fnode is access Opaque_Type;
pragma Convention (C, O_Fnode);
O_Fnode_Null : constant O_Fnode := null;
type O_Anode_Type;
type O_Anode is access O_Anode_Type;
type O_Anode_Type is record
Next : O_Anode;
Formal : O_Dnode;
Actual : O_Enode;
end record;
type O_Cnode is record
LLVM : ValueRef;
Ctype : O_Tnode;
end record;
-- Note: this record is always passed by reference.
pragma Convention (C, O_Cnode);
O_Cnode_Null : constant O_Cnode := (LLVM => Null_ValueRef,
Ctype => O_Tnode_Null);
type O_Enode is record
LLVM : ValueRef;
Etype : O_Tnode;
end record;
pragma Convention (C_Pass_By_Copy, O_Enode);
O_Enode_Null : constant O_Enode := (LLVM => Null_ValueRef,
Etype => O_Tnode_Null);
type O_Lnode is record
-- If True, the LLVM component is the value (used for arguments).
-- If False, the LLVM component is the address of the value (used
-- for everything else).
Direct : Boolean;
LLVM : ValueRef;
Ltype : O_Tnode;
end record;
-- Note: this record is always passed by reference.
pragma Convention (C, O_Lnode);
O_Lnode_Null : constant O_Lnode := (False, Null_ValueRef, O_Tnode_Null);
type O_Gnode is record
Ref : ValueRef;
Ltype : O_Tnode;
end record;
pragma Convention (C_Pass_By_Copy, O_Gnode);
O_Gnode_Null : constant O_Gnode := (Null_ValueRef, O_Tnode_Null);
type O_Snode is record
-- First BB in the loop body.
Bb_Entry : BasicBlockRef;
-- BB after the loop.
Bb_Exit : BasicBlockRef;
end record;
pragma Convention (C, O_Snode);
O_Snode_Null : constant O_Snode := (Null_BasicBlockRef,
Null_BasicBlockRef);
type Opaque_Acc is access Opaque_Type;
type O_Inter_List is record
Ident : O_Ident;
Storage : O_Storage;
Res_Type : O_Tnode;
-- Vector of interfaces.
Inters : Opaque_Acc;
end record;
pragma Convention (C, O_Inter_List);
type O_Element_Vec is access Opaque_Type;
pragma Convention (C, O_Element_Vec);
-- Record and union builder.
type O_Element_List is record
Kind : OF_Kind;
-- Number of fields.
Nbr_Elements : Natural;
-- For record: the access to the incomplete (but named) type.
Rec_Type : O_Tnode;
-- For unions: biggest for size and alignment
Size : unsigned;
Align : Unsigned_32;
Align_Type : TypeRef;
Els : O_Element_Vec;
end record;
pragma Convention (C, O_Element_List);
type O_Element_Sublist is record
-- Number of fields.
Count : Natural;
Base_Els : O_Element_Vec;
Els : O_Element_Vec;
end record;
pragma Convention (C, O_Element_Sublist);
type ValueRefArray_Acc is access Opaque_Type;
pragma Convention (C, ValueRefArray_Acc);
type O_Record_Aggr_List is record
-- Current number of elements in Vals.
Len : unsigned;
-- Value of elements.
Vals : ValueRefArray_Acc;
-- Type of the aggregate.
Atype : O_Tnode;
end record;
pragma Convention (C, O_Record_Aggr_List);
type O_Array_Aggr_List is record
-- Current number of elements in Vals.
Len : unsigned;
-- Value of elements.
Vals : ValueRefArray_Acc;
El_Type : TypeRef;
-- Type of the aggregate.
Atype : O_Tnode;
end record;
pragma Convention (C, O_Array_Aggr_List);
type O_Assoc_List is record
Subprg : O_Dnode;
Idx : unsigned;
Vals : ValueRefArray_Acc;
end record;
pragma Convention (C, O_Assoc_List);
type O_Enum_List is record
LLVM : TypeRef;
Num : Natural;
Etype : O_Tnode;
Dbg : ValueRefArray_Acc;
end record;
type O_Choice_Type is record
Low, High : ValueRef;
Bb : BasicBlockRef;
end record;
type O_Choice_Array is array (Natural range <>) of O_Choice_Type;
type O_Choice_Array_Acc is access O_Choice_Array;
type O_Case_Block is record
-- BB before the case.
BB_Prev : BasicBlockRef;
-- Select expression
Value : ValueRef;
Vtype : O_Tnode;
-- BB after the case statement.
BB_Next : BasicBlockRef;
-- BB for others
BB_Others : BasicBlockRef;
-- BB for the current choice
BB_Choice : BasicBlockRef;
-- List of choices.
Choices : O_Choice_Array_Acc;
end record;
pragma Convention (C, O_Case_Block);
type O_If_Block is record
-- The next basic block.
-- After the 'If', this is the BB for the else part. If there is no
-- else part, this is the BB for statements after the if.
-- After the 'else', this is the BB for statements after the if.
Bb : BasicBlockRef;
end record;
pragma Convention (C, O_If_Block);
-- function Get_LLVM_Type (Atype : O_Tnode) return TypeRef;
pragma Import (C, New_Dyadic_Op);
pragma Import (C, New_Monadic_Op);
pragma Import (C, New_Compare_Op);
pragma Import (C, New_Convert_Ov);
pragma Import (C, New_Convert);
pragma Import (C, New_Alloca);
pragma Import (C, New_Signed_Literal);
pragma Import (C, New_Unsigned_Literal);
pragma Import (C, New_Float_Literal);
pragma Import (C, New_Null_Access);
pragma Import (C, Start_Record_Type);
pragma Import (C, New_Record_Field);
pragma Import (C, Finish_Record_Type);
pragma Import (C, New_Uncomplete_Record_Type);
pragma Import (C, Start_Uncomplete_Record_Type);
pragma Import (C, Start_Record_Subtype);
pragma Import (C, New_Subrecord_Field);
pragma Import (C, Finish_Record_Subtype);
pragma Import (C, Start_Union_Type);
pragma Import (C, New_Union_Field);
pragma Import (C, Finish_Union_Type);
pragma Import (C, New_Unsigned_Type);
pragma Import (C, New_Signed_Type);
pragma Import (C, New_Float_Type);
pragma Import (C, New_Access_Type);
pragma Import (C, Finish_Access_Type);
pragma Import (C, New_Array_Type);
pragma Import (C, New_Array_Subtype);
pragma Import (C, New_Boolean_Type);
pragma Import (C, Start_Enum_Type);
pragma Import (C, New_Enum_Literal);
pragma Import (C, Finish_Enum_Type);
pragma Import (C, Start_Record_Aggr);
pragma Import (C, New_Record_Aggr_El);
pragma Import (C, Finish_Record_Aggr);
pragma Import (C, Start_Array_Aggr);
pragma Import (C, New_Array_Aggr_El);
pragma Import (C, Finish_Array_Aggr);
pragma Import (C, New_Union_Aggr);
pragma Import (C, New_Default_Value);
pragma Import (C, New_Indexed_Element);
pragma Import (C, New_Slice);
pragma Import (C, New_Selected_Element);
pragma Import (C, New_Access_Element);
pragma Import (C, New_Sizeof);
pragma Import (C, New_Record_Sizeof);
pragma Import (C, New_Alignof);
pragma Import (C, New_Offsetof);
pragma Import (C, New_Address);
pragma Import (C, New_Global_Address);
pragma Import (C, New_Unchecked_Address);
pragma Import (C, New_Global_Unchecked_Address);
pragma Import (C, New_Subprogram_Address);
pragma Import (C, New_Lit);
pragma Import (C, New_Obj);
pragma Import (C, New_Obj_Value);
pragma Import (C, New_Global);
pragma Import (C, New_Global_Selected_Element);
pragma Import (C, New_Value);
pragma Import (C, New_Type_Decl);
pragma Import (C, New_Debug_Line_Decl);
pragma Import (C, New_Const_Decl);
pragma Import (C, New_Var_Decl);
pragma Import (C, Start_Init_Value);
pragma Import (C, Finish_Init_Value);
pragma Import (C, Start_Function_Decl);
pragma Import (C, Start_Procedure_Decl);
pragma Import (C, New_Interface_Decl);
pragma Import (C, Finish_Subprogram_Decl);
pragma Import (C, Start_Subprogram_Body);
pragma Import (C, Finish_Subprogram_Body);
pragma Import (C, New_Debug_Line_Stmt);
pragma Import (C, Start_Declare_Stmt);
pragma Import (C, Finish_Declare_Stmt);
pragma Import (C, Start_Association);
pragma Import (C, New_Association);
pragma Import (C, New_Function_Call);
pragma Import (C, New_Procedure_Call);
pragma Import (C, New_Assign_Stmt);
pragma Import (C, Start_If_Stmt);
pragma Import (C, New_Else_Stmt);
pragma Import (C, Finish_If_Stmt);
pragma Import (C, New_Return_Stmt);
pragma Import_Procedure (New_Return_Stmt,
"new_func_return_stmt", (O_Enode));
pragma Import_Procedure (New_Return_Stmt,
"new_proc_return_stmt", null);
pragma Import (C, Start_Loop_Stmt);
pragma Import (C, Finish_Loop_Stmt);
pragma Import (C, New_Exit_Stmt);
pragma Import (C, New_Next_Stmt);
pragma Import (C, Start_Case_Stmt);
pragma Import (C, Start_Choice);
pragma Import (C, New_Expr_Choice);
pragma Import (C, New_Range_Choice);
pragma Import (C, New_Default_Choice);
pragma Import (C, Finish_Choice);
pragma Import (C, Finish_Case_Stmt);
end Ortho_LLVM;
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