diff options
| author | ReinUsesLisp <reinuseslisp@airmail.cc> | 2021-05-05 02:19:08 -0300 |
|---|---|---|
| committer | ameerj <52414509+ameerj@users.noreply.github.com> | 2021-07-22 21:51:30 -0400 |
| commit | b10cf64c486d8730fcfeb53a333814915b3b5fbe (patch) | |
| tree | 59cb4f62ac806071e0f0a341589c164017520f3a /src/shader_recompiler/backend/glasm/emit_glasm.cpp | |
| parent | 09dc23f97188a4fa5ea03556a9187bfbefef1d78 (diff) | |
glasm: Add GLASM backend infrastructure
Diffstat (limited to 'src/shader_recompiler/backend/glasm/emit_glasm.cpp')
| -rw-r--r-- | src/shader_recompiler/backend/glasm/emit_glasm.cpp | 95 |
1 files changed, 95 insertions, 0 deletions
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 |