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//===- 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>
]>;
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