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Reduce recompiler output memory usage, and added multi-threading to recomp process (#128)

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* feat(recomp): Reduce recompiler output memory usage

Stream output generation, add low-memory config controls, and avoid
pathological indirect-jump switch expansion in generated C++.

Low-memory mode now avoids retaining per-instruction disassembly strings
while still emitting asm comments during output generation. Output workers
are bounded/configurable, combined output is streamed, and decoded buffers
are released after generation.

Also document the new output memory settings.

* fix(recomp): added tests for unregistered JR/JALR, updated fallback logic to cover JR/JALR, moved Rabbitizer formatting into R5900Decoder
This commit is contained in:
Sinan
2026-06-06 05:15:14 +02:00
committed by GitHub
parent 93e221feaa
commit ed8b3ebee1
10 changed files with 659 additions and 126 deletions
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ps2xRecomp/include/ps2recomp/code_generator.h
+3
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@@ -39,6 +39,7 @@ namespace ps2recomp
std::unordered_set<uint32_t> entryPoints;
std::unordered_set<uint32_t> externalEntryPoints;
std::unordered_set<uint32_t> resumeEntryPoints;
std::unordered_set<uint32_t> indirectFallbackEntryPoints;
std::unordered_map<uint32_t, std::vector<uint32_t>> jumpTableTargets;
};
@@ -52,6 +53,7 @@ namespace ps2recomp
void setRelocationCallNames(const std::unordered_map<uint32_t, std::string> &callNames);
void setConfiguredJumpTables(const std::vector<JumpTable> &jumpTables);
void setResumeEntryTargets(const std::unordered_map<uint32_t, std::vector<uint32_t>> &resumeTargetsByOwner);
void setEmitInstructionComments(bool emitInstructionComments);
AnalysisResult collectInternalBranchTargets(const Function &function,
const std::vector<Instruction> &instructions,
@@ -65,6 +67,7 @@ namespace ps2recomp
std::unordered_map<uint32_t, std::vector<uint32_t>> m_resumeEntryTargetsByOwner;
const std::vector<Section>& m_sections;
BootstrapInfo m_bootstrapInfo;
bool m_emitInstructionComments = true;
std::string translateInstruction(const Instruction &inst);
std::string translateMMIInstruction(const Instruction &inst);
ps2xRecomp/include/ps2recomp/r5900_decoder.h
+6 -2
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@@ -4,6 +4,7 @@
#include "ps2recomp/types.h"
#include "ps2recomp/instructions.h"
#include <cstdint>
#include <string>
namespace ps2recomp
{
@@ -14,7 +15,10 @@ namespace ps2recomp
R5900Decoder();
~R5900Decoder();
Instruction decodeInstruction(uint32_t address, uint32_t rawInstruction) const;
static std::string disassembleInstruction(uint32_t address, uint32_t rawInstruction);
static std::string disassembleInstruction(const Instruction &inst);
Instruction decodeInstruction(uint32_t address, uint32_t rawInstruction, bool includeDisassembly = true) const;
bool isBranchInstruction(const Instruction &inst) const;
bool isJumpInstruction(const Instruction &inst) const;
@@ -52,4 +56,4 @@ namespace ps2recomp
} // namespace ps2recomp
#endif // PS2RECOMP_R5900_DECODER_H
#endif // PS2RECOMP_R5900_DECODER_H
ps2xRecomp/include/ps2recomp/types.h
+2
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@@ -173,6 +173,8 @@ namespace ps2recomp
std::string outputPath;
std::string ghidraMapPath;
bool singleFileOutput = false;
bool lowMemoryMode = false;
uint32_t outputWorkerThreads = 0;
bool patchSyscalls = false;
bool patchCop0 = true;
bool patchCache = true;