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Optimize decoder

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This commit is contained in:
nmzik
2026-08-15 21:38:44 +02:00
parent f3cdf217ea
commit 5bfdf4267e
15 changed files with 471 additions and 485 deletions
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src/graphics/shader/recompiler/frontend/decode/ShaderDecoder.h
+9 -4
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@@ -5,6 +5,7 @@
#include "common/stringUtils.h"
#include <span>
#include <string_view>
#include <vector>
namespace Libs::Graphics::ShaderRecompiler::Decoder {
@@ -664,7 +665,7 @@ struct Instruction {
bool compr = false;
bool vm = false;
} exp;
std::string unsupported_reason;
std::string_view unsupported_reason;
};
struct Program {
@@ -672,13 +673,17 @@ struct Program {
std::vector<Instruction> instructions;
};
// Code spans are trusted to contain complete instructions, valid branch targets, and 32-bit PCs.
Family GetInstructionFamily(uint32_t word);
// The output object must be freshly initialized.
bool DecodeInstruction(std::span<const uint32_t> code, uint32_t word_index, Instruction& inst,
std::string* error);
bool DecodeProgram(std::span<const uint32_t> code, Program& program, std::string* error);
bool DecodeScalarSource(uint32_t code, uint32_t pc, Operand& operand, std::string* error);
bool DecodeScalarDestination(uint32_t code, uint32_t pc, Operand& operand, std::string* error);
bool DecodeVectorGpr(uint32_t reg, Operand& operand, std::string* error);
bool ReadLiteralOperands(std::span<const uint32_t> code, uint32_t word_index, Instruction& inst,
std::string* error);
void DecodeVectorGpr(uint32_t reg, Operand& operand);
void ReadLiteralOperands(std::span<const uint32_t> code, uint32_t word_index, Instruction& inst);
void SetRawWords(Instruction& inst, std::span<const uint32_t> code, uint32_t word_index,
uint32_t word_count);
void SetUnsupported(Instruction& inst, Family family, uint32_t opcode_id, const char* reason);