33388ae866
This patch introduces basic tablegen infra such as
LoongArch{InstrFormats,InstrInfo,RegisterInfo,CallingConv,}.td.
For now, only add instruction definitions for LoongArch basic integer
operations.
Our initial target is a working MC layer rather than codegen,
so appropriate SelectionDAG patterns will come later.
Differential revision: https://reviews.llvm.org/D115861
24 lines
922 B
TableGen
24 lines
922 B
TableGen
//=- LoongArchCallingConv.td - Calling Conventions LoongArch -*- tablegen -*-=//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This describes the calling conventions for the LoongArch architecture.
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//
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//===----------------------------------------------------------------------===//
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def CSR_ILP32S_LP64S
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: CalleeSavedRegs<(add R1, (sequence "R%u", 22, 31))>;
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def CSR_ILP32F_LP64F
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: CalleeSavedRegs<(add CSR_ILP32S_LP64S, (sequence "F%u", 24, 31))>;
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def CSR_ILP32D_LP64D
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: CalleeSavedRegs<(add CSR_ILP32S_LP64S, (sequence "F%u_64", 24, 31))>;
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// Needed for implementation of LoongArchRegisterInfo::getNoPreservedMask()
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def CSR_NoRegs : CalleeSavedRegs<(add)>;
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