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Jit64: avoid an unnecessary load

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This commit is contained in:
Tillmann Karras 2018-04-19 21:47:14 +01:00
parent 396204248d
commit 1737f1bee8
1 changed files with 3 additions and 1 deletions
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4
Source/Core/Core/PowerPC/Jit64/JitAsm.cpp
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@ -112,6 +112,8 @@ void Jit64AsmRoutineManager::Generate()
// Fast block number lookup.
// ((PC >> 2) & mask) * sizeof(JitBlock*) = (PC & (mask << 2)) * 2
MOV(32, R(RSCRATCH), PPCSTATE(pc));
// Keep a copy for later.
MOV(32, R(RSCRATCH_EXTRA), R(RSCRATCH));
u64 icache = reinterpret_cast<u64>(m_jit.GetBlockCache()->GetFastBlockMap());
AND(32, R(RSCRATCH), Imm32(JitBaseBlockCache::FAST_BLOCK_MAP_MASK << 2));
if (icache <= INT_MAX)
@ -132,7 +134,7 @@ void Jit64AsmRoutineManager::Generate()
MOV(32, R(RSCRATCH2), PPCSTATE(msr));
AND(32, R(RSCRATCH2), Imm32(JitBaseBlockCache::JIT_CACHE_MSR_MASK));
SHL(64, R(RSCRATCH2), Imm8(32));
MOV(32, R(RSCRATCH_EXTRA), PPCSTATE(pc));
// RSCRATCH_EXTRA still has the PC.
OR(64, R(RSCRATCH2), R(RSCRATCH_EXTRA));
CMP(64, R(RSCRATCH2), MDisp(RSCRATCH, static_cast<s32>(offsetof(JitBlock, effectiveAddress))));
FixupBranch state_mismatch = J_CC(CC_NE);