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Create drawergen tool

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Magnus Norddahl 2016-11-28 17:31:56 +01:00
commit e9e7839133
72 changed files with 1407 additions and 1108 deletions
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src/r_compiler/ssa/ssa_function.cpp
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/*
** 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 "r_compiler/llvm_include.h"
#include "ssa_function.h"
#include "ssa_int.h"
#include "ssa_scope.h"
#include "ssa_value.h"
SSAFunction::SSAFunction(const std::string name)
: name(name), return_type(llvm::Type::getVoidTy(SSAScope::context())), func()
{
}
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));
}