1//===-- RISCVCallingConv.td - Calling Conventions RISCV ----*- tablegen -*-===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is distributed under the University of Illinois Open Source 6// License. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9// 10// This describes the calling conventions for the RISCV architecture. 11// 12//===----------------------------------------------------------------------===// 13 14// The RISC-V calling convention is handled with custom code in 15// RISCVISelLowering.cpp (CC_RISCV). 16 17def CSR : CalleeSavedRegs<(add X1, X3, X4, X8, X9, (sequence "X%u", 18, 27))>; 18 19// Needed for implementation of RISCVRegisterInfo::getNoPreservedMask() 20def CSR_NoRegs : CalleeSavedRegs<(add)>; 21