Revision 52764a70462f2c0499c982a97e2bb134185aba52 authored by Jameson Nash on 01 August 2018, 02:13:14 UTC, committed by Jameson Nash on 01 August 2018, 21:43:56 UTC
1 parent 8d343d8
abi_win32.cpp
//===-- abi_win32.cpp - x86 ABI description ---------------------*- C++ -*-===//
//
// LDC – the LLVM D compiler
//
// This file is distributed under the BSD-style LDC license:
//
// Copyright (c) 2007-2012 LDC Team.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// * Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
// * Neither the name of the LDC Team nor the names of its contributors may be
// used to endorse or promote products derived from this software without
// specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// 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;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
// ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
//===----------------------------------------------------------------------===//
//
// The ABI implementation used for 32 bit x86 targets on Windows.
//
//===----------------------------------------------------------------------===//
struct ABI_Win32Layout : AbiLayout {
bool use_sret(jl_datatype_t *dt) override
{
// Use sret if the size of the argument is not one of 1, 2, 4, 8 bytes
// This covers the special case of ComplexF32
size_t size = jl_datatype_size(dt);
if (size == 1 || size == 2 || size == 4 || size == 8)
return false;
return true;
}
bool needPassByRef(jl_datatype_t *dt, AttrBuilder &ab) override
{
// Use pass by reference for all structs
if (dt->layout->nfields > 0) {
ab.addAttribute(Attribute::ByVal);
return true;
}
return false;
}
Type *preferred_llvm_type(jl_datatype_t *dt, bool isret) const override
{
// Arguments are either scalar or passed by value
// rewrite integer sized (non-sret) struct to the corresponding integer
if (!dt->layout->nfields)
return NULL;
return Type::getIntNTy(jl_LLVMContext, jl_datatype_nbits(dt));
}
};
![swh spinner](/static/img/swh-spinner.gif)
Computing file changes ...