mirror of
https://github.com/ZDoom/gzdoom.git
synced 2024-12-11 05:00:58 +00:00
58 lines
2.1 KiB
C++
58 lines
2.1 KiB
C++
/*
|
|
** LLVM if statement branching
|
|
** 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_if_block.h"
|
|
#include "ssa_scope.h"
|
|
|
|
SSAIfBlock::SSAIfBlock()
|
|
: if_basic_block(0), else_basic_block(0), end_basic_block(0)
|
|
{
|
|
}
|
|
|
|
void SSAIfBlock::if_block(SSABool true_condition)
|
|
{
|
|
if_basic_block = llvm::BasicBlock::Create(SSAScope::context(), "if", SSAScope::builder().GetInsertBlock()->getParent());
|
|
else_basic_block = llvm::BasicBlock::Create(SSAScope::context(), "else", SSAScope::builder().GetInsertBlock()->getParent());
|
|
end_basic_block = else_basic_block;
|
|
SSAScope::builder().CreateCondBr(true_condition.v, if_basic_block, else_basic_block);
|
|
SSAScope::builder().SetInsertPoint(if_basic_block);
|
|
}
|
|
|
|
void SSAIfBlock::else_block()
|
|
{
|
|
end_basic_block = llvm::BasicBlock::Create(SSAScope::context(), "end", SSAScope::builder().GetInsertBlock()->getParent());
|
|
SSAScope::builder().CreateBr(end_basic_block);
|
|
SSAScope::builder().SetInsertPoint(else_basic_block);
|
|
}
|
|
|
|
void SSAIfBlock::end_block()
|
|
{
|
|
SSAScope::builder().CreateBr(end_basic_block);
|
|
SSAScope::builder().SetInsertPoint(end_basic_block);
|
|
}
|
|
|
|
void SSAIfBlock::end_retvoid()
|
|
{
|
|
SSAScope::builder().CreateRetVoid();
|
|
SSAScope::builder().SetInsertPoint(end_basic_block);
|
|
}
|