| //===- HexagonCallingConv.td - Calling Conventions Hexagon -*- 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 Hexagon architectures. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| //===----------------------------------------------------------------------===// |
| // Return Value Calling Conventions |
| //===----------------------------------------------------------------------===// |
| |
| // Hexagon 32-bit C return-value convention. |
| def RetCC_Hexagon32 : CallingConv<[ |
| CCIfType<[i32, f32], CCAssignToReg<[R0, R1, R2, R3, R4, R5]>>, |
| CCIfType<[i64, f64], CCAssignToReg<[D0, D1, D2]>>, |
| |
| // Alternatively, they are assigned to the stack in 4-byte aligned units. |
| CCAssignToStack<4, 4> |
| ]>; |
| |
| // Hexagon 32-bit C Calling convention. |
| def CC_Hexagon32 : CallingConv<[ |
| // All arguments get passed in integer registers if there is space. |
| CCIfType<[f32, i32, i16, i8], CCAssignToReg<[R0, R1, R2, R3, R4, R5]>>, |
| CCIfType<[f64, i64], CCAssignToReg<[D0, D1, D2]>>, |
| |
| // Alternatively, they are assigned to the stack in 4-byte aligned units. |
| CCAssignToStack<4, 4> |
| ]>; |
