| //===- MipsCallingConv.td - Calling Conventions for Mips --------*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file was developed by Bruno Cardoso Lopes and is distributed under the |
| // University of Illinois Open Source License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // This describes the calling conventions for Mips architecture. |
| //===----------------------------------------------------------------------===// |
| |
| /// CCIfSubtarget - Match if the current subtarget has a feature F. |
| class CCIfSubtarget<string F, CCAction A>: |
| CCIf<!strconcat("State.getTarget().getSubtarget<MipsSubtarget>().", F), A>; |
| |
| //===----------------------------------------------------------------------===// |
| // Mips Return Value Calling Convention |
| //===----------------------------------------------------------------------===// |
| def RetCC_Mips : CallingConv<[ |
| // i32 are returned in registers V0, V1 |
| CCIfType<[i32], CCAssignToReg<[V0, V1]>> |
| ]>; |
| |
| |
| //===----------------------------------------------------------------------===// |
| // Mips Argument Calling Conventions |
| //===----------------------------------------------------------------------===// |
| def CC_Mips : CallingConv<[ |
| // Promote i8/i16 arguments to i32. |
| CCIfType<[i8, i16], CCPromoteToType<i32>>, |
| |
| // The first 4 integer arguments are passed in integer registers. |
| CCIfType<[i32], CCAssignToReg<[A0, A1, A2, A3]>>, |
| |
| // Integer values get stored in stack slots that are 4 bytes in |
| // size and 4-byte aligned. |
| CCIfType<[i32], CCAssignToStack<4, 4>> |
| ]>; |
| |