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more fixes for flag optimisation

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+ small cycle counting optimisation
This commit is contained in:
RSDuck
2019-09-08 14:09:00 +02:00
parent 5202c505ab
commit 2ef776883f
5 changed files with 86 additions and 44 deletions
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28
src/ARMJIT_x64/ARMJIT_Compiler.cpp
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@ -447,6 +447,8 @@ CompiledBlock Compiler::CompileBlock(ARM* cpu, FetchedInstr instrs[], int instrs
Comp_AddCycles_C();
else
{
IrregularCycles = false;
FixupBranch skipExecute;
if (cond < 0xE)
skipExecute = CheckCondition(cond);
@ -463,13 +465,19 @@ CompiledBlock Compiler::CompileBlock(ARM* cpu, FetchedInstr instrs[], int instrs
if (CurInstr.Cond() < 0xE)
{
FixupBranch skipFailed = J();
SetJumpTarget(skipExecute);
if (IrregularCycles)
{
FixupBranch skipFailed = J();
SetJumpTarget(skipExecute);
Comp_AddCycles_C();
Comp_AddCycles_C(true);
SetJumpTarget(skipFailed);
SetJumpTarget(skipFailed);
}
else
SetJumpTarget(skipExecute);
}
}
}
@ -518,8 +526,16 @@ void Compiler::Comp_AddCycles_CI(Gen::X64Reg i, int add)
NDS::ARM7MemTimings[CurInstr.CodeCycles][Thumb ? 0 : 2]
: ((R15 & 0x2) ? 0 : CurInstr.CodeCycles);
LEA(32, RSCRATCH, MDisp(i, add + cycles));
ADD(32, MDisp(RCPU, offsetof(ARM, Cycles)), R(RSCRATCH));
if (!Thumb && CurInstr.Cond() < 0xE)
{
LEA(32, RSCRATCH, MDisp(i, add + cycles));
ADD(32, MDisp(RCPU, offsetof(ARM, Cycles)), R(RSCRATCH));
}
else
{
ConstantCycles += i + cycles;
ADD(32, MDisp(RCPU, offsetof(ARM, Cycles)), R(i));
}
}
}