1 //===-- LoongArchSubtarget.cpp - LoongArch Subtarget Information -*- C++ -*--=//
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 file implements the LoongArch specific subclass of TargetSubtargetInfo.
10 //
11 //===----------------------------------------------------------------------===//
12
13 #include "LoongArchSubtarget.h"
14 #include "LoongArchFrameLowering.h"
15
16 using namespace llvm;
17
18 #define DEBUG_TYPE "loongarch-subtarget"
19
20 #define GET_SUBTARGETINFO_TARGET_DESC
21 #define GET_SUBTARGETINFO_CTOR
22 #include "LoongArchGenSubtargetInfo.inc"
23
anchor()24 void LoongArchSubtarget::anchor() {}
25
initializeSubtargetDependencies(const Triple & TT,StringRef CPU,StringRef TuneCPU,StringRef FS,StringRef ABIName)26 LoongArchSubtarget &LoongArchSubtarget::initializeSubtargetDependencies(
27 const Triple &TT, StringRef CPU, StringRef TuneCPU, StringRef FS,
28 StringRef ABIName) {
29 bool Is64Bit = TT.isArch64Bit();
30 if (CPU.empty() || CPU == "generic")
31 CPU = Is64Bit ? "generic-la64" : "generic-la32";
32
33 if (TuneCPU.empty())
34 TuneCPU = CPU;
35
36 ParseSubtargetFeatures(CPU, TuneCPU, FS);
37 if (Is64Bit) {
38 GRLenVT = MVT::i64;
39 GRLen = 64;
40 }
41
42 if (HasLA32 == HasLA64)
43 report_fatal_error("Please use one feature of 32bit and 64bit.");
44
45 if (Is64Bit && HasLA32)
46 report_fatal_error("Feature 32bit should be used for loongarch32 target.");
47
48 if (!Is64Bit && HasLA64)
49 report_fatal_error("Feature 64bit should be used for loongarch64 target.");
50
51 // TODO: ILP32{S,F} LP64{S,F}
52 TargetABI = Is64Bit ? LoongArchABI::ABI_LP64D : LoongArchABI::ABI_ILP32D;
53 return *this;
54 }
55
LoongArchSubtarget(const Triple & TT,StringRef CPU,StringRef TuneCPU,StringRef FS,StringRef ABIName,const TargetMachine & TM)56 LoongArchSubtarget::LoongArchSubtarget(const Triple &TT, StringRef CPU,
57 StringRef TuneCPU, StringRef FS,
58 StringRef ABIName,
59 const TargetMachine &TM)
60 : LoongArchGenSubtargetInfo(TT, CPU, TuneCPU, FS),
61 FrameLowering(
62 initializeSubtargetDependencies(TT, CPU, TuneCPU, FS, ABIName)),
63 InstrInfo(*this), RegInfo(getHwMode()), TLInfo(TM, *this) {}
64