forked from OSchip/llvm-project
39 lines
1.7 KiB
TableGen
39 lines
1.7 KiB
TableGen
//===- AlphaCallingConv.td - Calling Conventions for Alpha -*- 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 Alpha architecture.
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Alpha Return Value Calling Convention
|
|
//===----------------------------------------------------------------------===//
|
|
def RetCC_Alpha : CallingConv<[
|
|
// i64 is returned in register R0
|
|
// R1 is an llvm extension, I don't know what gcc does
|
|
CCIfType<[i64], CCAssignToReg<[R0,R1]>>,
|
|
|
|
// f32 / f64 are returned in F0/F1
|
|
CCIfType<[f32, f64], CCAssignToReg<[F0, F1]>>
|
|
]>;
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Alpha Argument Calling Conventions
|
|
//===----------------------------------------------------------------------===//
|
|
def CC_Alpha : CallingConv<[
|
|
// The first 6 arguments are passed in registers, whether integer or
|
|
// floating-point
|
|
CCIfType<[i64], CCAssignToRegWithShadow<[R16, R17, R18, R19, R20, R21],
|
|
[F16, F17, F18, F19, F20, F21]>>,
|
|
|
|
CCIfType<[f32, f64], CCAssignToRegWithShadow<[F16, F17, F18, F19, F20, F21],
|
|
[R16, R17, R18, R19, R20, R21]>>,
|
|
|
|
// Stack slots are 8 bytes in size and 8-byte aligned.
|
|
CCIfType<[i64, f32, f64], CCAssignToStack<8, 8>>
|
|
]>;
|