From b10cf64c486d8730fcfeb53a333814915b3b5fbe Mon Sep 17 00:00:00 2001
From: ReinUsesLisp <reinuseslisp@airmail.cc>
Date: Wed, 5 May 2021 02:19:08 -0300
Subject: glasm: Add GLASM backend infrastructure
---
src/shader_recompiler/backend/glasm/emit_glasm.cpp | 95 ++++++++++++++++++++++
1 file changed, 95 insertions(+)
create mode 100644 src/shader_recompiler/backend/glasm/emit_glasm.cpp
(limited to 'src/shader_recompiler/backend/glasm/emit_glasm.cpp')
diff --git a/src/shader_recompiler/backend/glasm/emit_glasm.cpp b/src/shader_recompiler/backend/glasm/emit_glasm.cpp
new file mode 100644
index 0000000000..59d7c0f966
--- /dev/null
+++ b/src/shader_recompiler/backend/glasm/emit_glasm.cpp
@@ -0,0 +1,95 @@
+// Copyright 2021 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include <string>
+#include <tuple>
+
+#include "shader_recompiler/backend/bindings.h"
+#include "shader_recompiler/backend/glasm/emit_context.h"
+#include "shader_recompiler/backend/glasm/emit_glasm.h"
+#include "shader_recompiler/backend/glasm/emit_glasm_instructions.h"
+#include "shader_recompiler/frontend/ir/program.h"
+#include "shader_recompiler/profile.h"
+
+namespace Shader::Backend::GLASM {
+namespace {
+template <class Func>
+struct FuncTraits {};
+
+template <class ReturnType_, class... Args>
+struct FuncTraits<ReturnType_ (*)(Args...)> {
+ using ReturnType = ReturnType_;
+
+ static constexpr size_t NUM_ARGS = sizeof...(Args);
+
+ template <size_t I>
+ using ArgType = std::tuple_element_t<I, std::tuple<Args...>>;
+};
+
+template <typename ArgType>
+auto Arg(EmitContext& ctx, const IR::Value& arg) {
+ if constexpr (std::is_same_v<ArgType, std::string_view>) {
+ return ctx.reg_alloc.Consume(arg);
+ } else if constexpr (std::is_same_v<ArgType, const IR::Value&>) {
+ return arg;
+ } else if constexpr (std::is_same_v<ArgType, u32>) {
+ return arg.U32();
+ } else if constexpr (std::is_same_v<ArgType, IR::Block*>) {
+ return arg.Label();
+ } else if constexpr (std::is_same_v<ArgType, IR::Attribute>) {
+ return arg.Attribute();
+ } else if constexpr (std::is_same_v<ArgType, IR::Patch>) {
+ return arg.Patch();
+ } else if constexpr (std::is_same_v<ArgType, IR::Reg>) {
+ return arg.Reg();
+ }
+}
+
+template <auto func, bool is_first_arg_inst, size_t... I>
+void Invoke(EmitContext& ctx, IR::Inst* inst, std::index_sequence<I...>) {
+ using Traits = FuncTraits<decltype(func)>;
+ if constexpr (is_first_arg_inst) {
+ func(ctx, inst, Arg<typename Traits::template ArgType<I + 2>>(ctx, inst->Arg(I))...);
+ } else {
+ func(ctx, Arg<typename Traits::template ArgType<I + 1>>(ctx, inst->Arg(I))...);
+ }
+}
+
+template <auto func>
+void Invoke(EmitContext& ctx, IR::Inst* inst) {
+ using Traits = FuncTraits<decltype(func)>;
+ static_assert(Traits::NUM_ARGS >= 1, "Insufficient arguments");
+ if constexpr (Traits::NUM_ARGS == 1) {
+ Invoke<func, false>(ctx, inst, std::make_index_sequence<0>{});
+ } else {
+ using FirstArgType = typename Traits::template ArgType<1>;
+ static constexpr bool is_first_arg_inst = std::is_same_v<FirstArgType, IR::Inst*>;
+ using Indices = std::make_index_sequence<Traits::NUM_ARGS - (is_first_arg_inst ? 2 : 1)>;
+ Invoke<func, is_first_arg_inst>(ctx, inst, Indices{});
+ }
+}
+
+void EmitInst(EmitContext& ctx, IR::Inst* inst) {
+ switch (inst->GetOpcode()) {
+#define OPCODE(name, result_type, ...) \
+ case IR::Opcode::name: \
+ return Invoke<&Emit##name>(ctx, inst);
+#include "shader_recompiler/frontend/ir/opcodes.inc"
+#undef OPCODE
+ }
+ throw LogicError("Invalid opcode {}", inst->GetOpcode());
+}
+} // Anonymous namespace
+
+std::string EmitGLASM(const Profile&, IR::Program& program, Bindings&) {
+ EmitContext ctx;
+ for (IR::Block* const block : program.blocks) {
+ for (IR::Inst& inst : block->Instructions()) {
+ EmitInst(ctx, &inst);
+ }
+ }
+ return ctx.code;
+}
+
+} // namespace Shader::Backend::GLASM
--
cgit v1.2.3-70-g09d2