Merge pull request #9767 from JosJuice/jitarm64-fpr-callee-saved
JitArm64: Improve Arm64FPRCache::GetCallerSavedUsed
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commit
8ad7508620
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@ -742,6 +742,17 @@ bool Arm64FPRCache::IsCalleeSaved(ARM64Reg reg) const
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return std::find(callee_regs.begin(), callee_regs.end(), reg) != callee_regs.end();
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}
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bool Arm64FPRCache::IsTopHalfUsed(ARM64Reg reg) const
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{
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for (const OpArg& r : m_guest_registers)
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{
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if (r.GetReg() != ARM64Reg::INVALID_REG && DecodeReg(r.GetReg()) == DecodeReg(reg))
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return r.GetType() == RegType::Register;
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}
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return false;
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}
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void Arm64FPRCache::FlushRegister(size_t preg, bool maintain_state, ARM64Reg tmp_reg)
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{
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OpArg& reg = m_guest_registers[preg];
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@ -846,7 +857,7 @@ BitSet32 Arm64FPRCache::GetCallerSavedUsed() const
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BitSet32 registers(0);
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for (const auto& it : m_host_registers)
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{
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if (it.IsLocked())
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if (it.IsLocked() && (!IsCalleeSaved(it.GetReg()) || IsTopHalfUsed(it.GetReg())))
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registers[DecodeReg(it.GetReg())] = true;
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}
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return registers;
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@ -351,6 +351,7 @@ protected:
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private:
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bool IsCalleeSaved(Arm64Gen::ARM64Reg reg) const;
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bool IsTopHalfUsed(Arm64Gen::ARM64Reg reg) const;
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void FlushRegisters(BitSet32 regs, bool maintain_state, Arm64Gen::ARM64Reg tmp_reg);
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};
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