| //===- HexagonCallingConv.td ----------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| class CCIfArgIsVarArg<CCAction A> |
| : CCIf<"State.isVarArg() && " |
| "ValNo >= static_cast<HexagonCCState&>(State)" |
| ".getNumNamedVarArgParams()", A>; |
| |
| def CC_HexagonStack: CallingConv<[ |
| CCIfType<[i32,v2i16,v4i8], |
| CCAssignToStack<4,4>>, |
| CCIfType<[i64,v2i32,v4i16,v8i8], |
| CCAssignToStack<8,8>> |
| ]>; |
| |
| def CC_Hexagon: CallingConv<[ |
| CCIfType<[i1,i8,i16], |
| CCPromoteToType<i32>>, |
| CCIfType<[f32], |
| CCBitConvertToType<i32>>, |
| CCIfType<[f64], |
| CCBitConvertToType<i64>>, |
| |
| CCIfByVal< |
| CCPassByVal<8,8>>, |
| CCIfArgIsVarArg< |
| CCDelegateTo<CC_HexagonStack>>, |
| |
| // Pass split values in pairs, allocate odd register if necessary. |
| CCIfType<[i32], |
| CCIfSplit< |
| CCCustom<"CC_SkipOdd">>>, |
| |
| CCIfType<[i32,v2i16,v4i8], |
| CCAssignToReg<[R0,R1,R2,R3,R4,R5]>>, |
| // Make sure to allocate any skipped 32-bit register, so it does not get |
| // allocated to a subsequent 32-bit value. |
| CCIfType<[i64,v2i32,v4i16,v8i8], |
| CCCustom<"CC_SkipOdd">>, |
| CCIfType<[i64,v2i32,v4i16,v8i8], |
| CCAssignToReg<[D0,D1,D2]>>, |
| |
| CCDelegateTo<CC_HexagonStack> |
| ]>; |
| |
| def RetCC_Hexagon: CallingConv<[ |
| CCIfType<[i1,i8,i16], |
| CCPromoteToType<i32>>, |
| CCIfType<[f32], |
| CCBitConvertToType<i32>>, |
| CCIfType<[f64], |
| CCBitConvertToType<i64>>, |
| |
| // Small structures are returned in a pair of registers, (which is |
| // always r1:0). In such case, what is returned are two i32 values |
| // without any additional information (in ArgFlags) stating that |
| // they are parts of a structure. Because of that there is no way |
| // to differentiate that situation from an attempt to return two |
| // values, so always assign R0 and R1. |
| CCIfSplit< |
| CCAssignToReg<[R0,R1]>>, |
| CCIfType<[i32,v2i16,v4i8], |
| CCAssignToReg<[R0,R1]>>, |
| CCIfType<[i64,v2i32,v4i16,v8i8], |
| CCAssignToReg<[D0]>> |
| ]>; |
| |
| |
| class CCIfHvx64<CCAction A> |
| : CCIf<"State.getMachineFunction().getSubtarget<HexagonSubtarget>()" |
| ".useHVX64BOps()", A>; |
| |
| class CCIfHvx128<CCAction A> |
| : CCIf<"State.getMachineFunction().getSubtarget<HexagonSubtarget>()" |
| ".useHVX128BOps()", A>; |
| |
| def CC_Hexagon_HVX: CallingConv<[ |
| // HVX 64-byte mode |
| CCIfHvx64< |
| CCIfType<[v16i32,v32i16,v64i8], |
| CCAssignToReg<[V0,V1,V2,V3,V4,V5,V6,V7,V8,V9,V10,V11,V12,V13,V14,V15]>>>, |
| CCIfHvx64< |
| CCIfType<[v32i32,v64i16,v128i8], |
| CCAssignToReg<[W0,W1,W2,W3,W4,W5,W6,W7]>>>, |
| CCIfHvx64< |
| CCIfType<[v16i32,v32i16,v64i8], |
| CCAssignToStack<64,64>>>, |
| CCIfHvx64< |
| CCIfType<[v32i32,v64i16,v128i8], |
| CCAssignToStack<128,64>>>, |
| |
| // HVX 128-byte mode |
| CCIfHvx128< |
| CCIfType<[v32i32,v64i16,v128i8], |
| CCAssignToReg<[V0,V1,V2,V3,V4,V5,V6,V7,V8,V9,V10,V11,V12,V13,V14,V15]>>>, |
| CCIfHvx128< |
| CCIfType<[v64i32,v128i16,v256i8], |
| CCAssignToReg<[W0,W1,W2,W3,W4,W5,W6,W7]>>>, |
| CCIfHvx128< |
| CCIfType<[v32i32,v64i16,v128i8], |
| CCAssignToStack<128,128>>>, |
| CCIfHvx128< |
| CCIfType<[v64i32,v128i16,v256i8], |
| CCAssignToStack<256,128>>>, |
| |
| CCDelegateTo<CC_Hexagon> |
| ]>; |
| |
| def RetCC_Hexagon_HVX: CallingConv<[ |
| // HVX 64-byte mode |
| CCIfHvx64< |
| CCIfType<[v16i32,v32i16,v64i8], |
| CCAssignToReg<[V0]>>>, |
| CCIfHvx64< |
| CCIfType<[v32i32,v64i16,v128i8], |
| CCAssignToReg<[W0]>>>, |
| |
| // HVX 128-byte mode |
| CCIfHvx128< |
| CCIfType<[v32i32,v64i16,v128i8], |
| CCAssignToReg<[V0]>>>, |
| CCIfHvx128< |
| CCIfType<[v64i32,v128i16,v256i8], |
| CCAssignToReg<[W0]>>>, |
| |
| CCDelegateTo<RetCC_Hexagon> |
| ]>; |
| |
