forked from OSchip/llvm-project
40 lines
1.5 KiB
C++
40 lines
1.5 KiB
C++
//===- MipsCallingConv.td - Calling Conventions for Mips --------*- C++ -*-===//
|
|
//
|
|
// 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 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>>
|
|
]>;
|
|
|