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x64: andn() needs BMI1 cpu feature 

Issue #198
This commit is contained in:
Flyinghead 2021-03-09 14:37:59 +01:00
parent 99e37500e9
commit cb52d0b6ec
1 changed files with 20 additions and 1 deletions
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21
core/hw/arm7/arm7_rec_x64.cpp
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@ -90,6 +90,7 @@ class Arm7Compiler : public Xbyak::CodeGenerator
static const u32 C_FLAG = 1 << 29;
static const u32 V_FLAG = 1 << 28;
Xbyak::util::Cpu cpu;
Xbyak::Operand getOperand(const ArmOp::Operand& arg, Xbyak::Reg32 scratch_reg)
{
@ -438,7 +439,25 @@ class Arm7Compiler : public Xbyak::CodeGenerator
mov(eax, op.arg[1].getImmediate());
arg1 = eax;
}
andn(rd, static_cast<Xbyak::Reg32&>(arg1), arg0);
if (cpu.has(Cpu::tBMI1))
andn(rd, static_cast<Xbyak::Reg32&>(arg1), arg0);
else
{
if (rd == arg0)
{
if (arg1 != r9d)
mov(r9d, arg1);
not_(r9d);
and_(rd, r9d);
}
else
{
if (arg1 != rd)
mov(rd, static_cast<Xbyak::Reg32&>(arg1));
not_(rd);
and_(rd, arg0);
}
}
save_v_flag = false;
break;