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load register only if needed

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- do thumb bl long merge in the first step
- preparations for better branch jitting
This commit is contained in:
RSDuck
2019-09-08 14:48:20 +02:00
parent 85680d6fe5
commit 0e26aa4ede
7 changed files with 48 additions and 32 deletions
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12
src/ARMJIT_RegisterCache.h
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@ -38,7 +38,7 @@ public:
Mapping[reg] = (Reg)-1;
}
void LoadRegister(int reg)
void LoadRegister(int reg, bool loadValue)
{
assert(Mapping[reg] == -1);
for (int i = 0; i < NativeRegsAvailable; i++)
@ -50,7 +50,8 @@ public:
NativeRegsUsed |= 1 << (int)nativeReg;
LoadedRegs |= 1 << reg;
Compiler->LoadReg(reg, nativeReg);
if (loadValue)
Compiler->LoadReg(reg, nativeReg);
return;
}
@ -66,7 +67,7 @@ public:
UnloadRegister(reg);
}
void Prepare(int i)
void Prepare(bool thumb, int i)
{
u16 futureNeeded = 0;
int ranking[16];
@ -111,8 +112,11 @@ public:
loadedSet.m_val = LoadedRegs;
}
BitSet16 needValueLoaded(needToBeLoaded);
if (thumb || Instr.Cond() >= 0xE)
needValueLoaded = BitSet16(Instr.Info.SrcRegs);
for (int reg : needToBeLoaded)
LoadRegister(reg);
LoadRegister(reg, needValueLoaded[reg]);
}
DirtyRegs |= Instr.Info.DstRegs & ~(1 << 15);
}