mirror of
https://github.com/ZDoom/qzdoom-gpl.git
synced 2024-11-29 23:23:07 +00:00
76 lines
2.5 KiB
C++
76 lines
2.5 KiB
C++
/*
|
|
** LLVM function
|
|
** Copyright (c) 2016 Magnus Norddahl
|
|
**
|
|
** This software is provided 'as-is', without any express or implied
|
|
** warranty. In no event will the authors be held liable for any damages
|
|
** arising from the use of this software.
|
|
**
|
|
** Permission is granted to anyone to use this software for any purpose,
|
|
** including commercial applications, and to alter it and redistribute it
|
|
** freely, subject to the following restrictions:
|
|
**
|
|
** 1. The origin of this software must not be misrepresented; you must not
|
|
** claim that you wrote the original software. If you use this software
|
|
** in a product, an acknowledgment in the product documentation would be
|
|
** appreciated but is not required.
|
|
** 2. Altered source versions must be plainly marked as such, and must not be
|
|
** misrepresented as being the original software.
|
|
** 3. This notice may not be removed or altered from any source distribution.
|
|
**
|
|
*/
|
|
|
|
#include "precomp.h"
|
|
#include "ssa_function.h"
|
|
#include "ssa_int.h"
|
|
#include "ssa_scope.h"
|
|
#include "ssa_value.h"
|
|
|
|
SSAFunction::SSAFunction(const std::string name)
|
|
: func(), name(name), return_type(llvm::Type::getVoidTy(SSAScope::context()))
|
|
{
|
|
}
|
|
|
|
void SSAFunction::set_return_type(llvm::Type *type)
|
|
{
|
|
return_type = type;
|
|
}
|
|
|
|
void SSAFunction::add_parameter(llvm::Type *type)
|
|
{
|
|
parameters.push_back(type);
|
|
}
|
|
|
|
void SSAFunction::create_public()
|
|
{
|
|
func = SSAScope::module()->getFunction(name.c_str());
|
|
if (func == 0)
|
|
{
|
|
llvm::FunctionType *function_type = llvm::FunctionType::get(return_type, parameters, false);
|
|
func = llvm::Function::Create(function_type, llvm::Function::ExternalLinkage, name.c_str(), SSAScope::module());
|
|
//func->setCallingConv(llvm::CallingConv::X86_StdCall);
|
|
}
|
|
llvm::BasicBlock *entry = llvm::BasicBlock::Create(SSAScope::context(), "entry", func);
|
|
SSAScope::builder().SetInsertPoint(entry);
|
|
}
|
|
|
|
void SSAFunction::create_private()
|
|
{
|
|
func = SSAScope::module()->getFunction(name.c_str());
|
|
if (func == 0)
|
|
{
|
|
llvm::FunctionType *function_type = llvm::FunctionType::get(return_type, parameters, false);
|
|
func = llvm::Function::Create(function_type, llvm::Function::PrivateLinkage, name.c_str(), SSAScope::module());
|
|
func->addFnAttr(llvm::Attribute::AlwaysInline);
|
|
}
|
|
llvm::BasicBlock *entry = llvm::BasicBlock::Create(SSAScope::context(), "entry", func);
|
|
SSAScope::builder().SetInsertPoint(entry);
|
|
}
|
|
|
|
SSAValue SSAFunction::parameter(int index)
|
|
{
|
|
llvm::Function::arg_iterator arg_it = func->arg_begin();
|
|
for (int i = 0; i < index; i++)
|
|
++arg_it;
|
|
return SSAValue::from_llvm(static_cast<llvm::Argument*>(arg_it));
|
|
}
|