From d24a16045f0f6b0b873d5e3b5bf187c1a8c4343f Mon Sep 17 00:00:00 2001
From: ReinUsesLisp <reinuseslisp@airmail.cc>
Date: Wed, 3 Feb 2021 16:43:04 -0300
Subject: shader: Initial instruction support

---
 .../ir_opt/get_set_elimination_pass.cpp            | 87 ----------------------
 src/shader_recompiler/ir_opt/passes.h              |  1 -
 2 files changed, 88 deletions(-)
 delete mode 100644 src/shader_recompiler/ir_opt/get_set_elimination_pass.cpp

(limited to 'src/shader_recompiler/ir_opt')

diff --git a/src/shader_recompiler/ir_opt/get_set_elimination_pass.cpp b/src/shader_recompiler/ir_opt/get_set_elimination_pass.cpp
deleted file mode 100644
index 21b8526cd..000000000
--- a/src/shader_recompiler/ir_opt/get_set_elimination_pass.cpp
+++ /dev/null
@@ -1,87 +0,0 @@
-// Copyright 2021 yuzu Emulator Project
-// Licensed under GPLv2 or any later version
-// Refer to the license.txt file included.
-
-#include <array>
-
-#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 {
-namespace {
-using Iterator = IR::Block::iterator;
-
-enum class TrackingType {
-    Reg,
-};
-
-struct RegisterInfo {
-    IR::Value register_value;
-    TrackingType tracking_type;
-    Iterator last_set_instruction;
-    bool set_instruction_present = false;
-};
-
-void DoSet(IR::Block& block, RegisterInfo& info, IR::Value value, Iterator set_inst,
-           TrackingType tracking_type) {
-    if (info.set_instruction_present) {
-        info.last_set_instruction->Invalidate();
-        block.Instructions().erase(info.last_set_instruction);
-    }
-    info.register_value = value;
-    info.tracking_type = tracking_type;
-    info.set_instruction_present = true;
-    info.last_set_instruction = set_inst;
-}
-
-RegisterInfo Nothing(Iterator get_inst, TrackingType tracking_type) {
-    RegisterInfo info{};
-    info.register_value = IR::Value{&*get_inst};
-    info.tracking_type = tracking_type;
-    return info;
-}
-
-void DoGet(RegisterInfo& info, Iterator get_inst, TrackingType tracking_type) {
-    if (info.register_value.IsEmpty()) {
-        info = Nothing(get_inst, tracking_type);
-        return;
-    }
-    if (info.tracking_type == tracking_type) {
-        get_inst->ReplaceUsesWith(info.register_value);
-        return;
-    }
-    info = Nothing(get_inst, tracking_type);
-}
-} // Anonymous namespace
-
-void GetSetElimination(IR::Block& block) {
-    std::array<RegisterInfo, 255> reg_info;
-
-    for (Iterator inst = block.begin(); inst != block.end(); ++inst) {
-        switch (inst->Opcode()) {
-        case IR::Opcode::GetRegister: {
-            const IR::Reg reg{inst->Arg(0).Reg()};
-            if (reg == IR::Reg::RZ) {
-                break;
-            }
-            const size_t index{static_cast<size_t>(reg)};
-            DoGet(reg_info.at(index), inst, TrackingType::Reg);
-            break;
-        }
-        case IR::Opcode::SetRegister: {
-            const IR::Reg reg{inst->Arg(0).Reg()};
-            if (reg == IR::Reg::RZ) {
-                break;
-            }
-            const size_t index{static_cast<size_t>(reg)};
-            DoSet(block, reg_info.at(index), inst->Arg(1), inst, TrackingType::Reg);
-            break;
-        }
-        default:
-            break;
-        }
-    }
-}
-
-} // namespace Shader::Optimization
diff --git a/src/shader_recompiler/ir_opt/passes.h b/src/shader_recompiler/ir_opt/passes.h
index 83f094d73..7ed4005ed 100644
--- a/src/shader_recompiler/ir_opt/passes.h
+++ b/src/shader_recompiler/ir_opt/passes.h
@@ -17,7 +17,6 @@ void Invoke(Func&& func, IR::Function& function) {
 }
 
 void DeadCodeEliminationPass(IR::Block& block);
-void GetSetElimination(IR::Block& block);
 void IdentityRemovalPass(IR::Block& block);
 void SsaRewritePass(IR::Function& function);
 void VerificationPass(const IR::Block& block);
-- 
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