From ecb30c907266921818d5b6b03e341028fa2ea082 Mon Sep 17 00:00:00 2001
From: FernandoS27 <fsahmkow27@gmail.com>
Date: Thu, 1 Apr 2021 22:20:57 +0200
Subject: shader: Improve VOTE.VTG stub

---
 src/shader_recompiler/ir_opt/ssa_rewrite_pass.cpp | 51 ++++++++++++++++++++++-
 1 file changed, 50 insertions(+), 1 deletion(-)

(limited to 'src/shader_recompiler/ir_opt/ssa_rewrite_pass.cpp')

diff --git a/src/shader_recompiler/ir_opt/ssa_rewrite_pass.cpp b/src/shader_recompiler/ir_opt/ssa_rewrite_pass.cpp
index 259233746..7dab33034 100644
--- a/src/shader_recompiler/ir_opt/ssa_rewrite_pass.cpp
+++ b/src/shader_recompiler/ir_opt/ssa_rewrite_pass.cpp
@@ -38,6 +38,10 @@ struct ZeroFlagTag : FlagTag {};
 struct SignFlagTag : FlagTag {};
 struct CarryFlagTag : FlagTag {};
 struct OverflowFlagTag : FlagTag {};
+struct FCSMFlagTag : FlagTag {};
+struct TAFlagTag : FlagTag {};
+struct TRFlagTag : FlagTag {};
+struct MXFlagTag : FlagTag {};
 
 struct GotoVariable : FlagTag {
     GotoVariable() = default;
@@ -53,7 +57,8 @@ struct IndirectBranchVariable {
 };
 
 using Variant = std::variant<IR::Reg, IR::Pred, ZeroFlagTag, SignFlagTag, CarryFlagTag,
-                             OverflowFlagTag, GotoVariable, IndirectBranchVariable>;
+                             OverflowFlagTag, FCSMFlagTag, TAFlagTag, TRFlagTag, MXFlagTag,
+                             GotoVariable, IndirectBranchVariable>;
 using ValueMap = boost::container::flat_map<IR::Block*, IR::Value, std::less<IR::Block*>>;
 
 struct DefTable {
@@ -89,6 +94,22 @@ struct DefTable {
         return overflow_flag;
     }
 
+    [[nodiscard]] ValueMap& operator[](FCSMFlagTag) noexcept {
+        return fcsm_flag;
+    }
+
+    [[nodiscard]] ValueMap& operator[](TAFlagTag) noexcept {
+        return ta_flag;
+    }
+
+    [[nodiscard]] ValueMap& operator[](TRFlagTag) noexcept {
+        return tr_flag;
+    }
+
+    [[nodiscard]] ValueMap& operator[](MXFlagTag) noexcept {
+        return mr_flag;
+    }
+
     std::array<ValueMap, IR::NUM_USER_REGS> regs;
     std::array<ValueMap, IR::NUM_USER_PREDS> preds;
     boost::container::flat_map<u32, ValueMap> goto_vars;
@@ -97,6 +118,10 @@ struct DefTable {
     ValueMap sign_flag;
     ValueMap carry_flag;
     ValueMap overflow_flag;
+    ValueMap fcsm_flag;
+    ValueMap ta_flag;
+    ValueMap tr_flag;
+    ValueMap mr_flag;
 };
 
 IR::Opcode UndefOpcode(IR::Reg) noexcept {
@@ -247,6 +272,18 @@ void VisitInst(Pass& pass, IR::Block* block, IR::Inst& inst) {
     case IR::Opcode::SetOFlag:
         pass.WriteVariable(OverflowFlagTag{}, block, inst.Arg(0));
         break;
+    case IR::Opcode::SetFCSMFlag:
+        pass.WriteVariable(FCSMFlagTag{}, block, inst.Arg(0));
+        break;
+    case IR::Opcode::SetTAFlag:
+        pass.WriteVariable(TAFlagTag{}, block, inst.Arg(0));
+        break;
+    case IR::Opcode::SetTRFlag:
+        pass.WriteVariable(TRFlagTag{}, block, inst.Arg(0));
+        break;
+    case IR::Opcode::SetMXFlag:
+        pass.WriteVariable(MXFlagTag{}, block, inst.Arg(0));
+        break;
     case IR::Opcode::GetRegister:
         if (const IR::Reg reg{inst.Arg(0).Reg()}; reg != IR::Reg::RZ) {
             inst.ReplaceUsesWith(pass.ReadVariable(reg, block));
@@ -275,6 +312,18 @@ void VisitInst(Pass& pass, IR::Block* block, IR::Inst& inst) {
     case IR::Opcode::GetOFlag:
         inst.ReplaceUsesWith(pass.ReadVariable(OverflowFlagTag{}, block));
         break;
+    case IR::Opcode::GetFCSMFlag:
+        inst.ReplaceUsesWith(pass.ReadVariable(FCSMFlagTag{}, block));
+        break;
+    case IR::Opcode::GetTAFlag:
+        inst.ReplaceUsesWith(pass.ReadVariable(TAFlagTag{}, block));
+        break;
+    case IR::Opcode::GetTRFlag:
+        inst.ReplaceUsesWith(pass.ReadVariable(TRFlagTag{}, block));
+        break;
+    case IR::Opcode::GetMXFlag:
+        inst.ReplaceUsesWith(pass.ReadVariable(MXFlagTag{}, block));
+        break;
     default:
         break;
     }
-- 
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