1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
|
// SPDX-FileCopyrightText: Copyright 2021 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#pragma once
#include <bitset>
#include <fmt/format.h>
#include "common/bit_cast.h"
#include "common/bit_field.h"
#include "common/common_types.h"
#include "shader_recompiler/exception.h"
namespace Shader::IR {
class Inst;
class Value;
} // namespace Shader::IR
namespace Shader::Backend::GLASM {
class EmitContext;
enum class Type : u32 {
Void,
Register,
U32,
U64,
};
struct Id {
union {
u32 raw;
BitField<0, 1, u32> is_valid;
BitField<1, 1, u32> is_long;
BitField<2, 1, u32> is_spill;
BitField<3, 1, u32> is_condition_code;
BitField<4, 1, u32> is_null;
BitField<5, 27, u32> index;
};
bool operator==(Id rhs) const noexcept {
return raw == rhs.raw;
}
bool operator!=(Id rhs) const noexcept {
return !operator==(rhs);
}
};
static_assert(sizeof(Id) == sizeof(u32));
struct Value {
Type type;
union {
Id id;
u32 imm_u32;
u64 imm_u64;
};
bool operator==(const Value& rhs) const noexcept {
if (type != rhs.type) {
return false;
}
switch (type) {
case Type::Void:
return true;
case Type::Register:
return id == rhs.id;
case Type::U32:
return imm_u32 == rhs.imm_u32;
case Type::U64:
return imm_u64 == rhs.imm_u64;
}
return false;
}
bool operator!=(const Value& rhs) const noexcept {
return !operator==(rhs);
}
};
struct Register : Value {};
struct ScalarRegister : Value {};
struct ScalarU32 : Value {};
struct ScalarS32 : Value {};
struct ScalarF32 : Value {};
struct ScalarF64 : Value {};
class RegAlloc {
public:
RegAlloc() = default;
Register Define(IR::Inst& inst);
Register LongDefine(IR::Inst& inst);
[[nodiscard]] Value Peek(const IR::Value& value);
Value Consume(const IR::Value& value);
void Unref(IR::Inst& inst);
[[nodiscard]] Register AllocReg();
[[nodiscard]] Register AllocLongReg();
void FreeReg(Register reg);
void InvalidateConditionCodes() {
// This does nothing for now
}
[[nodiscard]] size_t NumUsedRegisters() const noexcept {
return num_used_registers;
}
[[nodiscard]] size_t NumUsedLongRegisters() const noexcept {
return num_used_long_registers;
}
[[nodiscard]] bool IsEmpty() const noexcept {
return register_use.none() && long_register_use.none();
}
/// Returns true if the instruction is expected to be aliased to another
static bool IsAliased(const IR::Inst& inst);
/// Returns the underlying value out of an alias sequence
static IR::Inst& AliasInst(IR::Inst& inst);
private:
static constexpr size_t NUM_REGS = 4096;
static constexpr size_t NUM_ELEMENTS = 4;
Value MakeImm(const IR::Value& value);
Register Define(IR::Inst& inst, bool is_long);
Value PeekInst(IR::Inst& inst);
Value ConsumeInst(IR::Inst& inst);
Id Alloc(bool is_long);
void Free(Id id);
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>
auto FormatTo(FormatContext& ctx, Id id) {
if (id.is_condition_code != 0) {
throw NotImplementedException("Condition code emission");
}
if (id.is_spill != 0) {
throw NotImplementedException("Spill emission");
}
if constexpr (scalar) {
if (id.is_null != 0) {
return fmt::format_to(ctx.out(), "{}", id.is_long != 0 ? "DC.x" : "RC.x");
}
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 {
if (id.is_null != 0) {
return fmt::format_to(ctx.out(), "{}", id.is_long != 0 ? "DC" : "RC");
}
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());
}
}
}
} // namespace Shader::Backend::GLASM
template <>
struct fmt::formatter<Shader::Backend::GLASM::Id> {
constexpr auto parse(format_parse_context& ctx) {
return ctx.begin();
}
template <typename FormatContext>
auto format(Shader::Backend::GLASM::Id id, FormatContext& ctx) {
return Shader::Backend::GLASM::FormatTo<true>(ctx, id);
}
};
template <>
struct fmt::formatter<Shader::Backend::GLASM::Register> {
constexpr auto parse(format_parse_context& ctx) {
return ctx.begin();
}
template <typename FormatContext>
auto format(const Shader::Backend::GLASM::Register& value, FormatContext& ctx) {
if (value.type != Shader::Backend::GLASM::Type::Register) {
throw Shader::InvalidArgument("Register value type is not register");
}
return Shader::Backend::GLASM::FormatTo<false>(ctx, value.id);
}
};
template <>
struct fmt::formatter<Shader::Backend::GLASM::ScalarRegister> {
constexpr auto parse(format_parse_context& ctx) {
return ctx.begin();
}
template <typename FormatContext>
auto format(const Shader::Backend::GLASM::ScalarRegister& value, FormatContext& ctx) {
if (value.type != Shader::Backend::GLASM::Type::Register) {
throw Shader::InvalidArgument("Register value type is not register");
}
return Shader::Backend::GLASM::FormatTo<true>(ctx, value.id);
}
};
template <>
struct fmt::formatter<Shader::Backend::GLASM::ScalarU32> {
constexpr auto parse(format_parse_context& ctx) {
return ctx.begin();
}
template <typename FormatContext>
auto format(const Shader::Backend::GLASM::ScalarU32& value, FormatContext& ctx) {
switch (value.type) {
case Shader::Backend::GLASM::Type::Void:
break;
case Shader::Backend::GLASM::Type::Register:
return Shader::Backend::GLASM::FormatTo<true>(ctx, value.id);
case Shader::Backend::GLASM::Type::U32:
return fmt::format_to(ctx.out(), "{}", value.imm_u32);
case Shader::Backend::GLASM::Type::U64:
break;
}
throw Shader::InvalidArgument("Invalid value type {}", value.type);
}
};
template <>
struct fmt::formatter<Shader::Backend::GLASM::ScalarS32> {
constexpr auto parse(format_parse_context& ctx) {
return ctx.begin();
}
template <typename FormatContext>
auto format(const Shader::Backend::GLASM::ScalarS32& value, FormatContext& ctx) {
switch (value.type) {
case Shader::Backend::GLASM::Type::Void:
break;
case Shader::Backend::GLASM::Type::Register:
return Shader::Backend::GLASM::FormatTo<true>(ctx, value.id);
case Shader::Backend::GLASM::Type::U32:
return fmt::format_to(ctx.out(), "{}", static_cast<s32>(value.imm_u32));
case Shader::Backend::GLASM::Type::U64:
break;
}
throw Shader::InvalidArgument("Invalid value type {}", value.type);
}
};
template <>
struct fmt::formatter<Shader::Backend::GLASM::ScalarF32> {
constexpr auto parse(format_parse_context& ctx) {
return ctx.begin();
}
template <typename FormatContext>
auto format(const Shader::Backend::GLASM::ScalarF32& value, FormatContext& ctx) {
switch (value.type) {
case Shader::Backend::GLASM::Type::Void:
break;
case Shader::Backend::GLASM::Type::Register:
return Shader::Backend::GLASM::FormatTo<true>(ctx, value.id);
case Shader::Backend::GLASM::Type::U32:
return fmt::format_to(ctx.out(), "{}", Common::BitCast<f32>(value.imm_u32));
case Shader::Backend::GLASM::Type::U64:
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::Void:
break;
case Shader::Backend::GLASM::Type::Register:
return Shader::Backend::GLASM::FormatTo<true>(ctx, value.id);
case Shader::Backend::GLASM::Type::U32:
break;
case Shader::Backend::GLASM::Type::U64:
return fmt::format_to(ctx.out(), "{}", Common::BitCast<f64>(value.imm_u64));
}
throw Shader::InvalidArgument("Invalid value type {}", value.type);
}
};
|
