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1//==- MSP430CallingConv.td - Calling Conventions for MSP430 -*- tablegen -*-==//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8// This describes the calling conventions for MSP430 architecture.9//===----------------------------------------------------------------------===//10 11//===----------------------------------------------------------------------===//12// MSP430 Return Value Calling Convention13//===----------------------------------------------------------------------===//14def RetCC_MSP430 : CallingConv<[15 // i8 are returned in registers R12B, R13B, R14B, R15B16 CCIfType<[i8], CCAssignToReg<[R12B, R13B, R14B, R15B]>>,17 18 // i16 are returned in registers R12, R13, R14, R1519 CCIfType<[i16], CCAssignToReg<[R12, R13, R14, R15]>>20]>;21 22//===----------------------------------------------------------------------===//23// MSP430 Argument Calling Conventions24//===----------------------------------------------------------------------===//25def CC_MSP430_AssignStack : CallingConv<[26 // Pass by value if the byval attribute is given27 CCIfByVal<CCPassByVal<2, 2>>,28 29 // Promote i8 arguments to i16.30 CCIfType<[i8], CCPromoteToType<i16>>,31 32 // Integer values get stored in stack slots that are 2 bytes in33 // size and 2-byte aligned.34 CCIfType<[i16], CCAssignToStack<2, 2>>35]>;36 37