qzdoom/tools/drawergen/ssa/ssa_value.cpp

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2016-11-01 20:44:33 +00:00
/*
** SSA value
** 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.
**
*/
2016-11-28 16:31:56 +00:00
#include "precomp.h"
#include "ssa_value.h"
#include "ssa_int.h"
#include "ssa_scope.h"
SSAValue SSAValue::load(bool constantScopeDomain)
{
auto loadInst = SSAScope::builder().CreateLoad(v, false);
if (constantScopeDomain)
loadInst->setMetadata(llvm::LLVMContext::MD_alias_scope, SSAScope::constant_scope_list());
return SSAValue::from_llvm(loadInst);
}
void SSAValue::store(llvm::Value *value)
{
auto inst = SSAScope::builder().CreateStore(value, v, false);
inst->setMetadata(llvm::LLVMContext::MD_noalias, SSAScope::constant_scope_list());
}
SSAIndexLookup SSAValue::operator[](int index)
{
SSAIndexLookup result;
result.v = v;
result.indexes.push_back(SSAInt(index).v);
return result;
}
SSAIndexLookup SSAValue::operator[](SSAInt index)
{
SSAIndexLookup result;
result.v = v;
result.indexes.push_back(index.v);
return result;
}
/////////////////////////////////////////////////////////////////////////////
SSAIndexLookup::operator SSAValue()
{
return SSAValue::from_llvm(SSAScope::builder().CreateGEP(v, indexes));
}
SSAIndexLookup SSAIndexLookup::operator[](int index)
{
SSAIndexLookup result;
result.v = v;
result.indexes = indexes;
result.indexes.push_back(SSAInt(index).v);
return result;
}
SSAIndexLookup SSAIndexLookup::operator[](SSAInt index)
{
SSAIndexLookup result;
result.v = v;
result.indexes = indexes;
result.indexes.push_back(index.v);
return result;
}