[RISCV] Fix mgather -> riscv.masked.strided.load combine not extending indices (...
[llvm-project.git] / llvm / lib / Target / RISCV / RISCVCallingConv.td
blob11b716f20f37166cdbb455d2c3917106cdfd7b88
1 //===-- RISCVCallingConv.td - Calling Conventions RISC-V ---*- tablegen -*-===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 // This describes the calling conventions for the RISC-V architecture.
11 //===----------------------------------------------------------------------===//
13 // The RISC-V calling convention is handled with custom code in
14 // RISCVISelLowering.cpp (CC_RISCV).
16 def CSR_ILP32E_LP64E : CalleeSavedRegs<(add X1, X8, X9)>;
18 def CSR_ILP32_LP64
19     : CalleeSavedRegs<(add CSR_ILP32E_LP64E, (sequence "X%u", 18, 27))>;
21 def CSR_ILP32F_LP64F
22     : CalleeSavedRegs<(add CSR_ILP32_LP64,
23                        F8_F, F9_F, (sequence "F%u_F", 18, 27))>;
25 def CSR_ILP32D_LP64D
26     : CalleeSavedRegs<(add CSR_ILP32_LP64,
27                        F8_D, F9_D, (sequence "F%u_D", 18, 27))>;
29 // Needed for implementation of RISCVRegisterInfo::getNoPreservedMask()
30 def CSR_NoRegs : CalleeSavedRegs<(add)>;
32 // Interrupt handler needs to save/restore all registers that are used,
33 // both Caller and Callee saved registers.
34 def CSR_Interrupt : CalleeSavedRegs<(add X1, (sequence "X%u", 5, 31))>;
36 // Same as CSR_Interrupt, but including all 32-bit FP registers.
37 def CSR_XLEN_F32_Interrupt: CalleeSavedRegs<(add CSR_Interrupt,
38                                              (sequence "F%u_F", 0, 31))>;
40 // Same as CSR_Interrupt, but including all 64-bit FP registers.
41 def CSR_XLEN_F64_Interrupt: CalleeSavedRegs<(add CSR_Interrupt,
42                                              (sequence "F%u_D", 0, 31))>;
44 // Same as CSR_Interrupt, but excluding X16-X31.
45 def CSR_Interrupt_RVE : CalleeSavedRegs<(sub CSR_Interrupt,
46                                         (sequence "X%u", 16, 31))>;
48 // Same as CSR_XLEN_F32_Interrupt, but excluding X16-X31.
49 def CSR_XLEN_F32_Interrupt_RVE: CalleeSavedRegs<(sub CSR_XLEN_F32_Interrupt,
50                                                 (sequence "X%u", 16, 31))>;
52 // Same as CSR_XLEN_F64_Interrupt, but excluding X16-X31.
53 def CSR_XLEN_F64_Interrupt_RVE: CalleeSavedRegs<(sub CSR_XLEN_F64_Interrupt,
54                                                 (sequence "X%u", 16, 31))>;