llvm-mirror/lib/Target/RISCV/RISCVCallingConv.td

//===-- RISCVCallingConv.td - Calling Conventions RISCV ----*- tablegen -*-===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This describes the calling conventions for the RISCV architecture.
//
//===----------------------------------------------------------------------===//

// The RISC-V calling convention is handled with custom code in
// RISCVISelLowering.cpp (CC_RISCV).

def CSR : CalleeSavedRegs<(add X1, X3, X4, X8, X9, (sequence "X%u", 18, 27))>;

// Needed for implementation of RISCVRegisterInfo::getNoPreservedMask()
def CSR_NoRegs : CalleeSavedRegs<(add)>;