//===-- abi_win64.cpp - Windows x86_64 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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//       this list of conditions and the following disclaimer in the documentation
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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 64 bit x86 (i.e. x86_64/AMD64/x64) targets
// on Windows.
//
//===----------------------------------------------------------------------===//


struct AbiState {
};

const AbiState default_abi_state = {};


bool use_sret(AbiState *state, jl_value_t *ty)
{
    // Assume (jl_is_datatype(ty) && !jl_is_abstracttype(ty) &&
    //         !jl_is_array_type(ty))
    if (jl_is_cpointer_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, bool *byRefAttr)
{
    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)
        *byRefAttr = *byRef = true;
}

Type *preferred_llvm_type(jl_value_t *ty, bool isret)
{
    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;
}

// Windows needs all types pased byRef to be passed in caller allocated memory
bool need_private_copy(jl_value_t *ty, bool byRef)
{
    return byRef;
}
