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Avoid overhead calling __KernelIdle().

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~1.8% improvement in Zettai Hero Project.
This commit is contained in:
Unknown W. Brackets 2013-08-15 01:35:17 -07:00
parent 51e5cfab40
commit 2758634a0f
2 changed files with 23 additions and 11 deletions
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11
Core/MIPS/ARM/ArmCompBranch.cpp
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@ -18,6 +18,7 @@
#include "Core/Reporting.h"
#include "Core/HLE/HLE.h"
#include "Core/HLE/HLETables.h"
#include "Core/MIPS/MIPS.h"
#include "Core/MIPS/MIPSCodeUtils.h"
@ -421,9 +422,15 @@ void Jit::Comp_Syscall(u32 op)
WriteDownCount(offset);
js.downcountAmount = -offset;
MOVI2R(R0, op);
SaveDowncount();
QuickCallFunction(R1, (void *)&CallSyscall);
// Skip the CallSyscall overhead for __KernelIdle, which is called a lot.
if (op == GetSyscallOp("FakeSysCalls", NID_IDLE))
QuickCallFunction(R1, (void *)GetFunc("FakeSysCalls", NID_IDLE)->func);
else
{
MOVI2R(R0, op);
QuickCallFunction(R1, (void *)&CallSyscall);
}
RestoreDowncount();
WriteSyscallExit();

23
Core/MIPS/x86/CompBranch.cpp
View file

@ -17,16 +17,17 @@
#include "Core/Reporting.h"
#include "../../HLE/HLE.h"
#include "../../Host.h"
#include "Core/HLE/HLE.h"
#include "Core/HLE/HLETables.h"
#include "Core/Host.h"
#include "../MIPS.h"
#include "../MIPSCodeUtils.h"
#include "../MIPSAnalyst.h"
#include "../MIPSTables.h"
#include "Core/MIPS/MIPS.h"
#include "Core/MIPS/MIPSCodeUtils.h"
#include "Core/MIPS/MIPSAnalyst.h"
#include "Core/MIPS/MIPSTables.h"
#include "Jit.h"
#include "RegCache.h"
#include "Core/MIPS/x86/Jit.h"
#include "Core/MIPS/x86/RegCache.h"
#include "Core/MIPS/JitCommon/JitBlockCache.h"
#define _RS ((op>>21) & 0x1F)
@ -513,7 +514,11 @@ void Jit::Comp_Syscall(u32 op)
WriteDowncount(offset);
js.downcountAmount = -offset;
ABI_CallFunctionC((void *)&CallSyscall, op);
// Skip the CallSyscall overhead for __KernelIdle, which is called a lot.
if (op == GetSyscallOp("FakeSysCalls", NID_IDLE))
ABI_CallFunction((void *)GetFunc("FakeSysCalls", NID_IDLE)->func);
else
ABI_CallFunctionC((void *)&CallSyscall, op);
WriteSyscallExit();
js.compiling = false;