//===-- abi_win32.cpp - x86 ABI description ---------------------*- C++ -*-===//
//
//                         LDC – the LLVM D compiler
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// modification, are permitted provided that the following conditions are met:
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//       this list of conditions and the following disclaimer.
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// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
// ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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//===----------------------------------------------------------------------===//
//
// The ABI implementation used for 32 bit x86 targets on Windows.
//
//===----------------------------------------------------------------------===//


typedef bool AbiState;
AbiState default_abi_state = 0;

bool use_sret(AbiState *state, jl_value_t *ty)
{
    if (!jl_is_datatype(ty) || jl_is_abstracttype(ty) || jl_is_cpointer_type(ty) || jl_is_array_type(ty))
        return false;
    size_t size = jl_datatype_size(ty);
    if (size <= 8)
        return false;
    return true;
}

void needPassByRef(AbiState *state, jl_value_t *ty, bool *byRef, bool *inReg)
{
    if (!jl_is_datatype(ty) || jl_is_abstracttype(ty) || jl_is_cpointer_type(ty) || jl_is_array_type(ty))
        return;
    size_t size = jl_datatype_size(ty);
    if (size <= 8)
        return;
    *byRef = true;
}

Type *preferred_llvm_type(jl_value_t *ty, bool isret)
{
    if (!isret)
        return NULL;
    if (!jl_is_datatype(ty) || jl_is_abstracttype(ty) || jl_is_cpointer_type(ty) || jl_is_array_type(ty))
        return NULL;
    size_t size = jl_datatype_size(ty);
    if (size > 0 && size <= 8 && !jl_is_bitstype(ty))
        return Type::getIntNTy(getGlobalContext(), size*8);
    return NULL;
}

bool need_private_copy(jl_value_t *ty, bool byRef)
{
    return false;
}