From 2d48a7b4d0666ad16d03a22d85712617a0849046 Mon Sep 17 00:00:00 2001
From: ReinUsesLisp <reinuseslisp@airmail.cc>
Date: Sat, 9 Jan 2021 03:30:07 -0300
Subject: shader: Initial recompiler work

---
 src/shader_recompiler/frontend/maxwell/program.cpp | 69 ++++++++++++++++++++++
 1 file changed, 69 insertions(+)
 create mode 100644 src/shader_recompiler/frontend/maxwell/program.cpp

(limited to 'src/shader_recompiler/frontend/maxwell/program.cpp')

diff --git a/src/shader_recompiler/frontend/maxwell/program.cpp b/src/shader_recompiler/frontend/maxwell/program.cpp
new file mode 100644
index 000000000..67a98ba57
--- /dev/null
+++ b/src/shader_recompiler/frontend/maxwell/program.cpp
@@ -0,0 +1,69 @@
+// Copyright 2021 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include <algorithm>
+#include <memory>
+
+#include "shader_recompiler/frontend/maxwell/program.h"
+#include "shader_recompiler/frontend/maxwell/termination_code.h"
+#include "shader_recompiler/frontend/maxwell/translate/translate.h"
+
+namespace Shader::Maxwell {
+
+Program::Function::~Function() {
+    std::ranges::for_each(blocks, &std::destroy_at<IR::Block>);
+}
+
+Program::Program(Environment& env, const Flow::CFG& cfg) {
+    std::vector<IR::Block*> block_map;
+    functions.reserve(cfg.Functions().size());
+
+    for (const Flow::Function& cfg_function : cfg.Functions()) {
+        Function& function{functions.emplace_back()};
+
+        const size_t num_blocks{cfg_function.blocks.size()};
+        IR::Block* block_memory{block_alloc_pool.allocate(num_blocks)};
+        function.blocks.reserve(num_blocks);
+
+        block_map.resize(cfg_function.blocks_data.size());
+
+        // Visit the instructions of all blocks
+        for (const Flow::BlockId block_id : cfg_function.blocks) {
+            const Flow::Block& flow_block{cfg_function.blocks_data[block_id]};
+
+            IR::Block* const block{std::construct_at(block_memory, Translate(env, flow_block))};
+            ++block_memory;
+            function.blocks.push_back(block);
+            block_map[flow_block.id] = block;
+        }
+        // Now that all blocks are defined, emit the termination instructions
+        for (const Flow::BlockId block_id : cfg_function.blocks) {
+            const Flow::Block& flow_block{cfg_function.blocks_data[block_id]};
+            EmitTerminationCode(flow_block, block_map);
+        }
+    }
+}
+
+std::string DumpProgram(const Program& program) {
+    size_t index{0};
+    std::map<const IR::Inst*, size_t> inst_to_index;
+    std::map<const IR::Block*, size_t> block_to_index;
+
+    for (const Program::Function& function : program.functions) {
+        for (const IR::Block* const block : function.blocks) {
+            block_to_index.emplace(block, index);
+            ++index;
+        }
+    }
+    std::string ret;
+    for (const Program::Function& function : program.functions) {
+        ret += fmt::format("Function\n");
+        for (const IR::Block* const block : function.blocks) {
+            ret += IR::DumpBlock(*block, block_to_index, inst_to_index, index) + '\n';
+        }
+    }
+    return ret;
+}
+
+} // namespace Shader::Maxwell
-- 
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