/**************************************************************************
 *
 * Copyright 2009 VMware, Inc.
 * All Rights Reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sub license, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice (including the
 * next paragraph) shall be included in all copies or substantial portions
 * of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
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 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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/**
 * @file
 * Helper functions for calling intrinsics.
 *
 * @author Jose Fonseca <jfonseca@vmware.com>
 */


#ifndef LP_BLD_INTR_H
#define LP_BLD_INTR_H


#include "gallivm/lp_bld.h"
#include "gallivm/lp_bld_init.h"


/**
 * Max number of arguments in an intrinsic.
 */
#define LP_MAX_FUNC_ARGS 32

enum lp_func_attr {
   LP_FUNC_ATTR_ALWAYSINLINE = (1 << 0),
   LP_FUNC_ATTR_BYVAL        = (1 << 1),
   LP_FUNC_ATTR_INREG        = (1 << 2),
   LP_FUNC_ATTR_NOALIAS      = (1 << 3),
   LP_FUNC_ATTR_NOUNWIND     = (1 << 4),
   LP_FUNC_ATTR_READNONE     = (1 << 5),
   LP_FUNC_ATTR_READONLY     = (1 << 6),
   LP_FUNC_ATTR_WRITEONLY    = HAVE_LLVM >= 0x0400 ? (1 << 7) : 0,
   LP_FUNC_ATTR_INACCESSIBLE_MEM_ONLY = HAVE_LLVM >= 0x0400 ? (1 << 8) : 0,

   /* Legacy intrinsic that needs attributes on function declarations
    * and they must match the internal LLVM definition exactly, otherwise
    * intrinsic selection fails.
    */
   LP_FUNC_ATTR_LEGACY       = (1u << 31),
};

void
lp_format_intrinsic(char *name,
                    size_t size,
                    const char *name_root,
                    LLVMTypeRef type);

LLVMValueRef
lp_declare_intrinsic(LLVMModuleRef module,
                     const char *name,
                     LLVMTypeRef ret_type,
                     LLVMTypeRef *arg_types,
                     unsigned num_args);

void
lp_add_function_attr(LLVMValueRef function_or_call,
                     int attr_idx, enum lp_func_attr attr);

LLVMValueRef
lp_build_intrinsic(LLVMBuilderRef builder,
                   const char *name,
                   LLVMTypeRef ret_type,
                   LLVMValueRef *args,
                   unsigned num_args,
                   unsigned attr_mask);


LLVMValueRef
lp_build_intrinsic_unary(LLVMBuilderRef builder,
                         const char *name,
                         LLVMTypeRef ret_type,
                         LLVMValueRef a);


LLVMValueRef
lp_build_intrinsic_binary(LLVMBuilderRef builder,
                          const char *name,
                          LLVMTypeRef ret_type,
                          LLVMValueRef a,
                          LLVMValueRef b);


LLVMValueRef
lp_build_intrinsic_binary_anylength(struct gallivm_state *gallivm,
                                    const char *name,
                                    struct lp_type src_type,
                                    unsigned intr_size,
                                    LLVMValueRef a,
                                    LLVMValueRef b);


LLVMValueRef
lp_build_intrinsic_map(struct gallivm_state *gallivm,
                       const char *name,
                       LLVMTypeRef ret_type,
                       LLVMValueRef *args,
                       unsigned num_args);


LLVMValueRef
lp_build_intrinsic_map_unary(struct gallivm_state *gallivm,
                             const char *name,
                             LLVMTypeRef ret_type,
                             LLVMValueRef a);


LLVMValueRef
lp_build_intrinsic_map_binary(struct gallivm_state *gallivm,
                              const char *name,
                              LLVMTypeRef ret_type,
                              LLVMValueRef a,
                              LLVMValueRef b);


#endif /* !LP_BLD_INTR_H */