From 0bb35fa2306a66f1f0baf118619b5c1640ed9c01 Mon Sep 17 00:00:00 2001 From: Richard-Qin-X Date: Wed, 12 Aug 2026 21:56:37 +0800 Subject: [GlobalISel] Split the generic pipeline components --- backend/include/rcc/CodeGen/RegisterBankInfo.h | 39 ++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) create mode 100644 backend/include/rcc/CodeGen/RegisterBankInfo.h (limited to 'backend/include/rcc/CodeGen/RegisterBankInfo.h') diff --git a/backend/include/rcc/CodeGen/RegisterBankInfo.h b/backend/include/rcc/CodeGen/RegisterBankInfo.h new file mode 100644 index 0000000..70b7340 --- /dev/null +++ b/backend/include/rcc/CodeGen/RegisterBankInfo.h @@ -0,0 +1,39 @@ +// SPDX-License-Identifier: GPL-3.0-or-later + +#ifndef RCC_CODEGEN_REGISTERBANKINFO_H +#define RCC_CODEGEN_REGISTERBANKINFO_H + +#include "rcc/CodeGen/MachineIRTypes.h" +#include "rcc/CodeGen/Register.h" +#include "rcc/Support/Error.h" + +namespace rcc { + +class MachineFunction; +class MachineInstr; +class TargetDescription; +struct VirtualRegisterInfo; + +class RegisterBankInfo { +public: + virtual ~RegisterBankInfo() = default; + + [[nodiscard]] virtual Expected + selectBank(const MachineFunction &Function, Register Reg, const VirtualRegisterInfo &Info, + const MachineInstr *Context, const TargetDescription &Target) const = 0; + + [[nodiscard]] virtual Expected + constrainInstruction(MachineInstr &Instruction, MachineFunction &Function, + const TargetDescription &Target) const = 0; + + // This hook rejects invalid mappings before bank or register-class state is published. + [[nodiscard]] virtual Expected validateInstruction(const MachineInstr &, + const MachineFunction &, + const TargetDescription &) const { + return {}; + } +}; + +} // namespace rcc + +#endif // RCC_CODEGEN_REGISTERBANKINFO_H -- cgit v1.2.3