mirror of
https://git.suyu.dev/suyu/suyu.git
synced 2024-11-17 12:22:46 +01:00
24 lines
753 B
C++
24 lines
753 B
C++
|
// Copyright 2021 yuzu Emulator Project
|
||
|
|
// Licensed under GPLv2 or any later version
|
||
|
|
// Refer to the license.txt file included.
|
||
|
|
|
||
|
|
#include <ranges>
|
||
|
|
|
||
|
|
#include "shader_recompiler/frontend/ir/basic_block.h"
|
||
|
|
#include "shader_recompiler/frontend/ir/microinstruction.h"
|
||
|
|
#include "shader_recompiler/ir_opt/passes.h"
|
||
|
|
|
||
|
|
namespace Shader::Optimization {
|
||
|
|
|
||
|
|
void DeadCodeEliminationPass(IR::Block& block) {
|
||
|
|
// We iterate over the instructions in reverse order.
|
||
|
|
// This is because removing an instruction reduces the number of uses for earlier instructions.
|
||
|
|
for (IR::Inst& inst : std::views::reverse(block)) {
|
||
|
|
if (!inst.HasUses() && !inst.MayHaveSideEffects()) {
|
||
|
|
inst.Invalidate();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
} // namespace Shader::Optimization
|