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JIT: JitBaseBlockCache::InvalidateICache no longer memsets iCache memory to INVALID_BYTE.

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This is redundant, since we reset the valid_block bits any way.
However, this was a source of a significant performance issues in some games.
In particular, Metal Gear Solid: Twin Snakes.
This commit is contained in:
Yuriy O'Donnell 2014-05-23 20:40:29 +02:00
parent de1e2127dc
commit d08abfc14e
1 changed files with 0 additions and 24 deletions
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24
Source/Core/Core/PowerPC/JitCommon/JitCache.cpp
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@ -376,30 +376,6 @@ using namespace Gen;
block_map.erase(it1, it2);
}
}
// invalidate iCache.
// icbi can be called with any address, so we should check
if ((address & ~JIT_ICACHE_MASK) != 0x80000000 && (address & ~JIT_ICACHE_MASK) != 0x00000000 &&
(address & ~JIT_ICACHE_MASK) != 0x7e000000 && // TLB area
(address & ~JIT_ICACHEEX_MASK) != 0x90000000 && (address & ~JIT_ICACHEEX_MASK) != 0x10000000)
{
return;
}
if (address & JIT_ICACHE_VMEM_BIT)
{
u32 cacheaddr = address & JIT_ICACHE_MASK;
memset(iCacheVMEM + cacheaddr, JIT_ICACHE_INVALID_BYTE, length);
}
else if (address & JIT_ICACHE_EXRAM_BIT)
{
u32 cacheaddr = address & JIT_ICACHEEX_MASK;
memset(iCacheEx + cacheaddr, JIT_ICACHE_INVALID_BYTE, length);
}
else
{
u32 cacheaddr = address & JIT_ICACHE_MASK;
memset(iCache + cacheaddr, JIT_ICACHE_INVALID_BYTE, length);
}
}
void JitBlockCache::WriteLinkBlock(u8* location, const u8* address)
{