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rec-cpp: optimize small block checks

This commit is contained in:
Flyinghead 2018-08-03 15:49:20 +02:00
parent 2489a72588
commit 2cc55dfce4
1 changed files with 38 additions and 5 deletions
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43
core/rec-cpp/rec_cpp.cpp
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@ -817,6 +817,7 @@ struct opcode_blockend : public opcodeExec {
}
};
template <int sz>
struct opcode_check_block : public opcodeExec {
RuntimeBlockInfo* block;
vector<u8> code;
@ -825,15 +826,32 @@ struct opcode_check_block : public opcodeExec {
opcodeExec* setup(RuntimeBlockInfo* block) {
this->block = block;
ptr = GetMemPtr(block->addr, 4);
code.resize(block->sh4_code_size);
memcpy(&code[0], ptr, block->sh4_code_size);
code.resize(sz == -1 ? block->sh4_code_size : sz);
memcpy(&code[0], ptr, sz == -1 ? block->sh4_code_size : sz);
return this;
}
void execute() {
if (memcmp(ptr, &code[0], block->sh4_code_size) != 0)
ngen_blockcheckfail(block->addr);
switch (sz)
{
case 4:
if (*(u32 *)ptr != *(u32 *)&code[0])
ngen_blockcheckfail(block->addr);
break;
case 6:
if (*(u32 *)ptr != *(u32 *)&code[0] || *((u16 *)ptr + 2) != *((u16 *)&code[0] + 2))
ngen_blockcheckfail(block->addr);
break;
case 8:
if (*(u32 *)ptr != *(u32 *)&code[0] || *((u32 *)ptr + 1) != *((u32 *)&code[0] + 1))
ngen_blockcheckfail(block->addr);
break;
default:
if (memcmp(ptr, &code[0], block->sh4_code_size) != 0)
ngen_blockcheckfail(block->addr);
break;
}
}
};
@ -1204,7 +1222,22 @@ public:
size_t i = 0;
if (force_checks)
{
opcodeExec* op = (new opcode_check_block())->setup(block);
opcodeExec* op;
switch (block->sh4_code_size)
{
case 4:
op = (new opcode_check_block<4>())->setup(block);
break;
case 6:
op = (new opcode_check_block<6>())->setup(block);
break;
case 8:
op = (new opcode_check_block<8>())->setup(block);
break;
default:
op = (new opcode_check_block<-1>())->setup(block);
break;
}
ptrs.ptrs[i++] = op;
}
for (size_t opnum = 0; opnum < block->oplist.size(); opnum++, i++) {