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glasm: Initial GLASM fp64 support

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This commit is contained in:
ReinUsesLisp 2021-05-09 18:03:01 -03:00 • committed by ameerj
parent 9f851e3832
commit 4502595bc2
9 changed files with 152 additions and 55 deletions
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63
src/shader_recompiler/backend/glasm/reg_alloc.h
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@ -27,12 +27,14 @@ enum class Type : u32 {
U32,
S32,
F32,
F64,
};
struct Id {
union {
u32 raw;
BitField<0, 30, u32> index;
BitField<0, 29, u32> index;
BitField<29, 1, u32> is_long;
BitField<30, 1, u32> is_spill;
BitField<31, 1, u32> is_condition_code;
};
@ -53,6 +55,7 @@ struct Value {
u32 imm_u32;
s32 imm_s32;
f32 imm_f32;
f64 imm_f64;
};
bool operator==(const Value& rhs) const noexcept {
@ -68,6 +71,8 @@ struct Value {
return imm_s32 == rhs.imm_s32;
case Type::F32:
return Common::BitCast<u32>(imm_f32) == Common::BitCast<u32>(rhs.imm_f32);
case Type::F64:
return Common::BitCast<u64>(imm_f64) == Common::BitCast<u64>(rhs.imm_f64);
}
return false;
}
@ -80,6 +85,7 @@ struct ScalarRegister : Value {};
struct ScalarU32 : Value {};
struct ScalarS32 : Value {};
struct ScalarF32 : Value {};
struct ScalarF64 : Value {};
class RegAlloc {
public:
@ -87,9 +93,13 @@ public:
Register Define(IR::Inst& inst);
Register LongDefine(IR::Inst& inst);
Value Consume(const IR::Value& value);
Register AllocReg();
[[nodiscard]] Register AllocReg();
[[nodiscard]] Register AllocLongReg();
void FreeReg(Register reg);
@ -97,19 +107,27 @@ public:
return num_used_registers;
}
[[nodiscard]] size_t NumUsedLongRegisters() const noexcept {
return num_used_long_registers;
}
private:
static constexpr size_t NUM_REGS = 4096;
static constexpr size_t NUM_ELEMENTS = 4;
Register Define(IR::Inst& inst, bool is_long);
Value Consume(IR::Inst& inst);
Id Alloc();
Id Alloc(bool is_long);
void Free(Id id);
EmitContext& ctx;
size_t num_used_registers{};
size_t num_used_long_registers{};
std::bitset<NUM_REGS> register_use{};
std::bitset<NUM_REGS> long_register_use{};
};
template <bool scalar, typename FormatContext>
@ -121,9 +139,17 @@ auto FormatTo(FormatContext& ctx, Id id) {
throw NotImplementedException("Spill emission");
}
if constexpr (scalar) {
return fmt::format_to(ctx.out(), "R{}.x", id.index.Value());
if (id.is_long != 0) {
return fmt::format_to(ctx.out(), "D{}.x", id.index.Value());
} else {
return fmt::format_to(ctx.out(), "R{}.x", id.index.Value());
}
} else {
return fmt::format_to(ctx.out(), "R{}", id.index.Value());
if (id.is_long != 0) {
return fmt::format_to(ctx.out(), "D{}", id.index.Value());
} else {
return fmt::format_to(ctx.out(), "R{}", id.index.Value());
}
}
}
@ -184,6 +210,8 @@ struct fmt::formatter<Shader::Backend::GLASM::ScalarU32> {
return fmt::format_to(ctx.out(), "{}", static_cast<u32>(value.imm_s32));
case Shader::Backend::GLASM::Type::F32:
return fmt::format_to(ctx.out(), "{}", Common::BitCast<u32>(value.imm_f32));
case Shader::Backend::GLASM::Type::F64:
break;
}
throw Shader::InvalidArgument("Invalid value type {}", value.type);
}
@ -205,6 +233,8 @@ struct fmt::formatter<Shader::Backend::GLASM::ScalarS32> {
return fmt::format_to(ctx.out(), "{}", value.imm_s32);
case Shader::Backend::GLASM::Type::F32:
return fmt::format_to(ctx.out(), "{}", Common::BitCast<s32>(value.imm_f32));
case Shader::Backend::GLASM::Type::F64:
break;
}
throw Shader::InvalidArgument("Invalid value type {}", value.type);
}
@ -226,6 +256,29 @@ struct fmt::formatter<Shader::Backend::GLASM::ScalarF32> {
return fmt::format_to(ctx.out(), "{}", Common::BitCast<s32>(value.imm_s32));
case Shader::Backend::GLASM::Type::F32:
return fmt::format_to(ctx.out(), "{}", value.imm_f32);
case Shader::Backend::GLASM::Type::F64:
break;
}
throw Shader::InvalidArgument("Invalid value type {}", value.type);
}
};
template <>
struct fmt::formatter<Shader::Backend::GLASM::ScalarF64> {
constexpr auto parse(format_parse_context& ctx) {
return ctx.begin();
}
template <typename FormatContext>
auto format(const Shader::Backend::GLASM::ScalarF64& value, FormatContext& ctx) {
switch (value.type) {
case Shader::Backend::GLASM::Type::Register:
return Shader::Backend::GLASM::FormatTo<true>(ctx, value.id);
case Shader::Backend::GLASM::Type::U32:
case Shader::Backend::GLASM::Type::S32:
case Shader::Backend::GLASM::Type::F32:
break;
case Shader::Backend::GLASM::Type::F64:
return format_to(ctx.out(), "{}", value.imm_f64);
}
throw Shader::InvalidArgument("Invalid value type {}", value.type);
}