1 //===- XCoreCallingConv.td - Calling Conventions for XCore -*- 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 // This describes the calling conventions for XCore architecture. 10 //===----------------------------------------------------------------------===// 11 12 //===----------------------------------------------------------------------===// 13 // XCore Return Value Calling Convention 14 //===----------------------------------------------------------------------===// 15 def RetCC_XCore : CallingConv<[ 16 // i32 are returned in registers R0, R1, R2, R3 17 CCIfType<[i32], CCAssignToReg<[R0, R1, R2, R3]>>, 18 19 // Integer values get stored in stack slots that are 4 bytes in 20 // size and 4-byte aligned. 21 CCIfType<[i32], CCAssignToStack<4, 4>> 22 ]>; 23 24 //===----------------------------------------------------------------------===// 25 // XCore Argument Calling Conventions 26 //===----------------------------------------------------------------------===// 27 def CC_XCore : CallingConv<[ 28 // Promote i8/i16 arguments to i32. 29 CCIfType<[i8, i16], CCPromoteToType<i32>>, 30 31 // The 'nest' parameter, if any, is passed in R11. 32 CCIfNest<CCAssignToReg<[R11]>>, 33 34 // The first 4 integer arguments are passed in integer registers. 35 CCIfType<[i32], CCAssignToReg<[R0, R1, R2, R3]>>, 36 37 // Integer values get stored in stack slots that are 4 bytes in 38 // size and 4-byte aligned. 39 CCIfType<[i32], CCAssignToStack<4, 4>> 40 ]>; 41
