From 34c3ec2f8c69159fd61b42091ee3157c6e77fa30 Mon Sep 17 00:00:00 2001
From: ReinUsesLisp <reinuseslisp@airmail.cc>
Date: Mon, 25 Jan 2021 02:48:03 -0300
Subject: [PATCH] Revert "Start of Integer flags implementation"

This reverts #4713. The implementation in that PR is not accurate.
It does not reflect the behavior seen in hardware.
---
 src/video_core/shader/node.h        |  8 -----
 src/video_core/shader/shader_ir.cpp | 51 ++---------------------------
 src/video_core/shader/shader_ir.h   |  3 --
 3 files changed, 3 insertions(+), 59 deletions(-)

diff --git a/src/video_core/shader/node.h b/src/video_core/shader/node.h
index c9840b75e..b54d33763 100644
--- a/src/video_core/shader/node.h
+++ b/src/video_core/shader/node.h
@@ -465,14 +465,6 @@ public:
         return operands.size();
     }
 
-    NodeBlock& GetOperands() {
-        return operands;
-    }
-
-    const NodeBlock& GetOperands() const {
-        return operands;
-    }
-
     [[nodiscard]] const Node& operator[](std::size_t operand_index) const {
         return operands.at(operand_index);
     }
diff --git a/src/video_core/shader/shader_ir.cpp b/src/video_core/shader/shader_ir.cpp
index 625a5eb46..a4987ffc6 100644
--- a/src/video_core/shader/shader_ir.cpp
+++ b/src/video_core/shader/shader_ir.cpp
@@ -388,54 +388,9 @@ void ShaderIR::SetInternalFlagsFromInteger(NodeBlock& bb, Node value, bool sets_
     if (!sets_cc) {
         return;
     }
-    switch (value->index()) {
-    case 0: // Operation Node
-        SearchOperands(bb, value);
-        break;
-    case 2: // General Purpose Node
-        if (const auto* gpr = std::get_if<GprNode>(value.get())) {
-            LOG_DEBUG(HW_GPU, "GprNode: index={}", gpr->GetIndex());
-            Node zerop = Operation(OperationCode::LogicalIEqual, std::move(value),
-                                   Immediate(gpr->GetIndex()));
-            SetInternalFlag(bb, InternalFlag::Zero, std::move(zerop));
-        }
-        break;
-
-    default:
-        Node zerop = Operation(OperationCode::LogicalIEqual, std::move(value), Immediate(0));
-        SetInternalFlag(bb, InternalFlag::Zero, std::move(zerop));
-        LOG_WARNING(HW_GPU, "Node Type: {}", value->index());
-        break;
-    }
-}
-
-void ShaderIR::SearchOperands(NodeBlock& nb, Node var) {
-    const auto* op = std::get_if<OperationNode>(var.get());
-    if (op == nullptr) {
-        return;
-    }
-
-    if (op->GetOperandsCount() == 0) {
-        return;
-    }
-
-    for (auto& operand : op->GetOperands()) {
-        switch (operand->index()) {
-        case 0: // Operation Node
-            return SearchOperands(nb, operand);
-        case 2: // General Purpose Node
-            if (const auto* gpr = std::get_if<GprNode>(operand.get())) {
-                LOG_DEBUG(HW_GPU, "Child GprNode: index={}", gpr->GetIndex());
-                Node zerop = Operation(OperationCode::LogicalIEqual, std::move(operand),
-                                       Immediate(gpr->GetIndex()));
-                SetInternalFlag(nb, InternalFlag::Zero, std::move(zerop));
-            }
-            break;
-        default:
-            LOG_WARNING(HW_GPU, "Child Node Type: {}", operand->index());
-            break;
-        }
-    }
+    Node zerop = Operation(OperationCode::LogicalIEqual, std::move(value), Immediate(0));
+    SetInternalFlag(bb, InternalFlag::Zero, std::move(zerop));
+    LOG_WARNING(HW_GPU, "Condition codes implementation is incomplete");
 }
 
 Node ShaderIR::BitfieldExtract(Node value, u32 offset, u32 bits) {
diff --git a/src/video_core/shader/shader_ir.h b/src/video_core/shader/shader_ir.h
index 0afa39531..0c6ab0f07 100644
--- a/src/video_core/shader/shader_ir.h
+++ b/src/video_core/shader/shader_ir.h
@@ -346,9 +346,6 @@ private:
     /// Access a bindless image sampler.
     ImageEntry& GetBindlessImage(Tegra::Shader::Register reg, Tegra::Shader::ImageType type);
 
-    /// Recursive Iteration over the OperationNode operands, searching for GprNodes.
-    void SearchOperands(NodeBlock& nb, Node var);
-
     /// Extracts a sequence of bits from a node
     Node BitfieldExtract(Node value, u32 offset, u32 bits);