//===-- abi_x86.cpp - x86 ABI description -----------------------*- C++ -*-===//
//
// LDC – the LLVM D compiler
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//===----------------------------------------------------------------------===//
//
// The ABI implementation used for 32 bit x86 targets.
//
//===----------------------------------------------------------------------===//
struct ABI_x86Layout : AbiLayout {
STATIC_INLINE bool is_complex_type(jl_datatype_t *dt)
{
static jl_sym_t *Complex_sym = NULL;
if (Complex_sym == NULL)
Complex_sym = jl_symbol("Complex");
return jl_is_datatype(dt) && dt->name->name == Complex_sym && dt->name->module == jl_base_module;
}
inline bool is_complex64(jl_datatype_t *dt) const
{
return is_complex_type(dt) && jl_tparam0(dt) == (jl_value_t*)jl_float32_type;
}
inline bool is_complex128(jl_datatype_t *dt) const
{
return is_complex_type(dt) && jl_tparam0(dt) == (jl_value_t*)jl_float64_type;
}
bool use_sret(jl_datatype_t *dt, LLVMContext &ctx) override
{
size_t size = jl_datatype_size(dt);
if (size == 0)
return false;
if (is_complex64(dt) || (jl_is_primitivetype(dt) && size <= 8))
return false;
return true;
}
bool needPassByRef(jl_datatype_t *dt, AttrBuilder &ab, LLVMContext &ctx, Type *Ty) override
{
size_t size = jl_datatype_size(dt);
if (is_complex64(dt) || is_complex128(dt) || (jl_is_primitivetype(dt) && size <= 8))
return false;
ab.addByValAttr(Ty);
return true;
}
Type *preferred_llvm_type(jl_datatype_t *dt, bool isret, LLVMContext &ctx) const override
{
if (!isret)
return NULL;
// special case Complex{Float32} as a return type
if (is_complex64(dt))
return llvm::Type::getInt64Ty(ctx);
return NULL;
}
};