1326938Sdim//===- ARCCallingConv.td - Calling Conventions for ARC -----*- tablegen -*-===// 2326938Sdim// 3353358Sdim// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4353358Sdim// See https://llvm.org/LICENSE.txt for license information. 5353358Sdim// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6326938Sdim// 7326938Sdim//===----------------------------------------------------------------------===// 8326938Sdim// This describes the calling conventions for ARC architecture. 9326938Sdim//===----------------------------------------------------------------------===// 10326938Sdim 11326938Sdim//===----------------------------------------------------------------------===// 12326938Sdim// ARC Return Value Calling Convention 13326938Sdim//===----------------------------------------------------------------------===// 14326938Sdimdef RetCC_ARC : CallingConv<[ 15326938Sdim // i32 are returned in registers R0, R1, R2, R3 16326938Sdim CCIfType<[i32, i64], CCAssignToReg<[R0, R1, R2, R3]>>, 17326938Sdim 18326938Sdim // Integer values get stored in stack slots that are 4 bytes in 19326938Sdim // size and 4-byte aligned. 20326938Sdim CCIfType<[i64], CCAssignToStack<8, 4>>, 21326938Sdim CCIfType<[i32], CCAssignToStack<4, 4>> 22326938Sdim]>; 23326938Sdim 24326938Sdim//===----------------------------------------------------------------------===// 25326938Sdim// ARC Argument Calling Conventions 26326938Sdim//===----------------------------------------------------------------------===// 27326938Sdimdef CC_ARC : CallingConv<[ 28326938Sdim // Promote i8/i16 arguments to i32. 29326938Sdim CCIfType<[i8, i16], CCPromoteToType<i32>>, 30326938Sdim 31326938Sdim // The first 8 integer arguments are passed in integer registers. 32326938Sdim CCIfType<[i32, i64], CCAssignToReg<[R0, R1, R2, R3, R4, R5, R6, R7]>>, 33326938Sdim 34326938Sdim // Integer values get stored in stack slots that are 4 bytes in 35326938Sdim // size and 4-byte aligned. 36326938Sdim CCIfType<[i64], CCAssignToStack<8, 4>>, 37326938Sdim CCIfType<[i32], CCAssignToStack<4, 4>> 38326938Sdim]>; 39326938Sdim 40326938Sdimdef CSR_ARC : CalleeSavedRegs<(add (sequence "R%u", 13, 25), GP, FP)>; 41