1 //===- SPUCallingConv.td - Calling Conventions for CellSPU -*- tablegen -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This describes the calling conventions for the STI Cell SPU architecture.
12 //===----------------------------------------------------------------------===//
14 /// CCIfSubtarget - Match if the current subtarget has a feature F.
15 class CCIfSubtarget<string F, CCAction A>
16 : CCIf<!strconcat("State.getTarget().getSubtarget<PPCSubtarget>().", F), A>;
18 //===----------------------------------------------------------------------===//
19 // Return Value Calling Convention
20 //===----------------------------------------------------------------------===//
22 // Return-value convention for Cell SPU: Everything can be passed back via $3:
23 def RetCC_SPU : CallingConv<[
24 CCIfType<[i8], CCAssignToReg<[R3]>>,
25 CCIfType<[i16], CCAssignToReg<[R3]>>,
26 CCIfType<[i32], CCAssignToReg<[R3]>>,
27 CCIfType<[i64], CCAssignToReg<[R3]>>,
28 CCIfType<[i128], CCAssignToReg<[R3]>>,
29 CCIfType<[f32, f64], CCAssignToReg<[R3]>>,
30 CCIfType<[v16i8, v8i16, v4i32, v2i64, v4f32, v2f64], CCAssignToReg<[R3]>>,
31 CCIfType<[v2i32, v2f32], CCAssignToReg<[R3]>>
35 //===----------------------------------------------------------------------===//
36 // CellSPU Argument Calling Conventions
37 //===----------------------------------------------------------------------===//
38 def CCC_SPU : CallingConv<[
39 CCIfType<[i8, i16, i32, i64, i128, f32, f64,
40 v16i8, v8i16, v4i32, v4f32, v2i64, v2f64, v2i32, v2f32],
41 CCAssignToReg<[R3, R4, R5, R6, R7, R8, R9, R10, R11,
42 R12, R13, R14, R15, R16, R17, R18, R19, R20,
43 R21, R22, R23, R24, R25, R26, R27, R28, R29,
44 R30, R31, R32, R33, R34, R35, R36, R37, R38,
45 R39, R40, R41, R42, R43, R44, R45, R46, R47,
46 R48, R49, R50, R51, R52, R53, R54, R55, R56,
47 R57, R58, R59, R60, R61, R62, R63, R64, R65,
48 R66, R67, R68, R69, R70, R71, R72, R73, R74,
49 R75, R76, R77, R78, R79]>>,
50 // Integer/FP values get stored in stack slots that are 8 bytes in size and
51 // 8-byte aligned if there are no more registers to hold them.
52 CCIfType<[i32, i64, f32, f64], CCAssignToStack<8, 8>>,
54 // Vectors get 16-byte stack slots that are 16-byte aligned.
55 CCIfType<[v16i8, v8i16, v4i32, v2i64, v4f32, v2f64],
56 CCAssignToStack<16, 16>>