llvm-6502/lib/Target/Hexagon/HexagonCallingConv.td
Tony Linthicum b4b54153ad Hexagon backend support
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146412 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-12 21:14:40 +00:00

36 lines
1.3 KiB
TableGen

//===- 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], CCAssignToReg<[R0, R1, R2, R3, R4, R5]>>,
CCIfType<[i64], 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<[i32, i16, i8], CCAssignToReg<[R0, R1, R2, R3, R4, R5]>>,
CCIfType<[i64], CCAssignToReg<[D0, D1, D2]>>,
// Alternatively, they are assigned to the stack in 4-byte aligned units.
CCAssignToStack<4, 4>
]>;