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