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//===- MBlazeCallingConv.td - Calling Conventions for MBlaze ----*- 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 MBlaze architecture.
//===----------------------------------------------------------------------===//
/// CCIfSubtarget - Match if the current subtarget has a feature F.
class CCIfSubtarget<string F, CCAction A>:
CCIf<!strconcat("State.getTarget().getSubtarget<MBlazeSubtarget>().", F), A>;
//===----------------------------------------------------------------------===//
// MBlaze ABI Calling Convention
//===----------------------------------------------------------------------===//
def CC_MBlaze : CallingConv<[
// Promote i8/i16 arguments to i32.
CCIfType<[i8, i16], CCPromoteToType<i32>>,
// Integer arguments are passed in integer registers.
CCIfType<[i32], CCAssignToReg<[R5, R6, R7, R8, R9, R10]>>,
// Single fp arguments are passed in floating point registers
CCIfType<[f32], CCAssignToReg<[F5, F6, F7, F8, F9, F10]>>,
// 32-bit values get stored in stack slots that are 4 bytes in
// size and 4-byte aligned.
CCIfType<[i32, f32], CCAssignToStack<4, 4>>
]>;
def RetCC_MBlaze : CallingConv<[
// i32 are returned in registers R3, R4
CCIfType<[i32], CCAssignToReg<[R3, R4]>>,
// f32 are returned in registers F3, F4
CCIfType<[f32], CCAssignToReg<[F3, F4]>>
]>;
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