1//===- ARMConstantPoolValue.cpp - ARM constantpool value ------------------===//
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 ARM specific constantpool value class.
10//
11//===----------------------------------------------------------------------===//
12
13#include "ARMConstantPoolValue.h"
14#include "llvm/ADT/FoldingSet.h"
15#include "llvm/CodeGen/MachineBasicBlock.h"
16#include "llvm/Config/llvm-config.h"
17#include "llvm/IR/Constant.h"
18#include "llvm/IR/Constants.h"
19#include "llvm/IR/GlobalValue.h"
20#include "llvm/IR/GlobalVariable.h"
21#include "llvm/IR/Type.h"
22#include "llvm/Support/Casting.h"
23#include "llvm/Support/Compiler.h"
24#include "llvm/Support/ErrorHandling.h"
25#include "llvm/Support/raw_ostream.h"
26
27using namespace llvm;
28
29//===----------------------------------------------------------------------===//
30// ARMConstantPoolValue
31//===----------------------------------------------------------------------===//
32
33ARMConstantPoolValue::ARMConstantPoolValue(Type *Ty, unsigned id,
34 ARMCP::ARMCPKind kind,
35 unsigned char PCAdj,
36 ARMCP::ARMCPModifier modifier,
37 bool addCurrentAddress)
38 : MachineConstantPoolValue(Ty), LabelId(id), Kind(kind),
39 PCAdjust(PCAdj), Modifier(modifier),
40 AddCurrentAddress(addCurrentAddress) {}
41
42ARMConstantPoolValue::ARMConstantPoolValue(LLVMContext &C, unsigned id,
43 ARMCP::ARMCPKind kind,
44 unsigned char PCAdj,
45 ARMCP::ARMCPModifier modifier,
46 bool addCurrentAddress)
47 : MachineConstantPoolValue((Type*)Type::getInt32Ty(C)),
48 LabelId(id), Kind(kind), PCAdjust(PCAdj), Modifier(modifier),
49 AddCurrentAddress(addCurrentAddress) {}
50
51ARMConstantPoolValue::~ARMConstantPoolValue() = default;
52
53StringRef ARMConstantPoolValue::getModifierText() const {
54 switch (Modifier) {
55 // FIXME: Are these case sensitive? It'd be nice to lower-case all the
56 // strings if that's legal.
57 case ARMCP::no_modifier:
58 return "none";
59 case ARMCP::TLSGD:
60 return "tlsgd";
61 case ARMCP::GOT_PREL:
62 return "GOT_PREL";
63 case ARMCP::GOTTPOFF:
64 return "gottpoff";
65 case ARMCP::TPOFF:
66 return "tpoff";
67 case ARMCP::SBREL:
68 return "SBREL";
69 case ARMCP::SECREL:
70 return "secrel32";
71 }
72 llvm_unreachable("Unknown modifier!");
73}
74
75int ARMConstantPoolValue::getExistingMachineCPValue(MachineConstantPool *CP,
76 Align Alignment) {
77 llvm_unreachable("Shouldn't be calling this directly!");
78}
79
80void
81ARMConstantPoolValue::addSelectionDAGCSEId(FoldingSetNodeID &ID) {
82 ID.AddInteger(I: LabelId);
83 ID.AddInteger(I: PCAdjust);
84}
85
86bool
87ARMConstantPoolValue::hasSameValue(ARMConstantPoolValue *ACPV) {
88 if (ACPV->Kind == Kind &&
89 ACPV->PCAdjust == PCAdjust &&
90 ACPV->Modifier == Modifier &&
91 ACPV->LabelId == LabelId &&
92 ACPV->AddCurrentAddress == AddCurrentAddress) {
93 // Two PC relative constpool entries containing the same GV address or
94 // external symbols. FIXME: What about blockaddress?
95 if (Kind == ARMCP::CPValue || Kind == ARMCP::CPExtSymbol)
96 return true;
97 }
98 return false;
99}
100
101#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
102LLVM_DUMP_METHOD void ARMConstantPoolValue::dump() const {
103 errs() << " " << *this;
104}
105#endif
106
107void ARMConstantPoolValue::print(raw_ostream &O) const {
108 if (Modifier) O << "(" << getModifierText() << ")";
109 if (PCAdjust != 0) {
110 O << "-(LPC" << LabelId << "+" << (unsigned)PCAdjust;
111 if (AddCurrentAddress) O << "-.";
112 O << ")";
113 }
114}
115
116//===----------------------------------------------------------------------===//
117// ARMConstantPoolConstant
118//===----------------------------------------------------------------------===//
119
120ARMConstantPoolConstant::ARMConstantPoolConstant(Type *Ty,
121 const Constant *C,
122 unsigned ID,
123 ARMCP::ARMCPKind Kind,
124 unsigned char PCAdj,
125 ARMCP::ARMCPModifier Modifier,
126 bool AddCurrentAddress)
127 : ARMConstantPoolValue(Ty, ID, Kind, PCAdj, Modifier, AddCurrentAddress),
128 CVal(C) {}
129
130ARMConstantPoolConstant::ARMConstantPoolConstant(const Constant *C,
131 unsigned ID,
132 ARMCP::ARMCPKind Kind,
133 unsigned char PCAdj,
134 ARMCP::ARMCPModifier Modifier,
135 bool AddCurrentAddress)
136 : ARMConstantPoolValue((Type*)C->getType(), ID, Kind, PCAdj, Modifier,
137 AddCurrentAddress),
138 CVal(C) {}
139
140ARMConstantPoolConstant::ARMConstantPoolConstant(const GlobalVariable *GV,
141 const Constant *C)
142 : ARMConstantPoolValue((Type *)C->getType(), 0, ARMCP::CPPromotedGlobal, 0,
143 ARMCP::no_modifier, false), CVal(C) {
144 GVars.insert(Ptr: GV);
145}
146
147ARMConstantPoolConstant *
148ARMConstantPoolConstant::Create(const Constant *C, unsigned ID) {
149 return new ARMConstantPoolConstant(C, ID, ARMCP::CPValue, 0,
150 ARMCP::no_modifier, false);
151}
152
153ARMConstantPoolConstant *
154ARMConstantPoolConstant::Create(const GlobalVariable *GVar,
155 const Constant *Initializer) {
156 return new ARMConstantPoolConstant(GVar, Initializer);
157}
158
159ARMConstantPoolConstant *
160ARMConstantPoolConstant::Create(const GlobalValue *GV,
161 ARMCP::ARMCPModifier Modifier) {
162 return new ARMConstantPoolConstant((Type*)Type::getInt32Ty(C&: GV->getContext()),
163 GV, 0, ARMCP::CPValue, 0,
164 Modifier, false);
165}
166
167ARMConstantPoolConstant *
168ARMConstantPoolConstant::Create(const Constant *C, unsigned ID,
169 ARMCP::ARMCPKind Kind, unsigned char PCAdj) {
170 return new ARMConstantPoolConstant(C, ID, Kind, PCAdj,
171 ARMCP::no_modifier, false);
172}
173
174ARMConstantPoolConstant *
175ARMConstantPoolConstant::Create(const Constant *C, unsigned ID,
176 ARMCP::ARMCPKind Kind, unsigned char PCAdj,
177 ARMCP::ARMCPModifier Modifier,
178 bool AddCurrentAddress) {
179 return new ARMConstantPoolConstant(C, ID, Kind, PCAdj, Modifier,
180 AddCurrentAddress);
181}
182
183const GlobalValue *ARMConstantPoolConstant::getGV() const {
184 return dyn_cast_or_null<GlobalValue>(Val: CVal);
185}
186
187const BlockAddress *ARMConstantPoolConstant::getBlockAddress() const {
188 return dyn_cast_or_null<BlockAddress>(Val: CVal);
189}
190
191int ARMConstantPoolConstant::getExistingMachineCPValue(MachineConstantPool *CP,
192 Align Alignment) {
193 int index =
194 getExistingMachineCPValueImpl<ARMConstantPoolConstant>(CP, Alignment);
195 if (index != -1) {
196 auto *CPV = static_cast<ARMConstantPoolValue*>(
197 CP->getConstants()[index].Val.MachineCPVal);
198 auto *Constant = cast<ARMConstantPoolConstant>(Val: CPV);
199 Constant->GVars.insert_range(R&: GVars);
200 }
201 return index;
202}
203
204bool ARMConstantPoolConstant::hasSameValue(ARMConstantPoolValue *ACPV) {
205 const ARMConstantPoolConstant *ACPC = dyn_cast<ARMConstantPoolConstant>(Val: ACPV);
206 return ACPC && ACPC->CVal == CVal && ARMConstantPoolValue::hasSameValue(ACPV);
207}
208
209void ARMConstantPoolConstant::addSelectionDAGCSEId(FoldingSetNodeID &ID) {
210 ID.AddPointer(Ptr: CVal);
211 for (const auto *GV : GVars)
212 ID.AddPointer(Ptr: GV);
213 ARMConstantPoolValue::addSelectionDAGCSEId(ID);
214}
215
216void ARMConstantPoolConstant::print(raw_ostream &O) const {
217 O << CVal->getName();
218 ARMConstantPoolValue::print(O);
219}
220
221//===----------------------------------------------------------------------===//
222// ARMConstantPoolSymbol
223//===----------------------------------------------------------------------===//
224
225ARMConstantPoolSymbol::ARMConstantPoolSymbol(LLVMContext &C, StringRef s,
226 unsigned id, unsigned char PCAdj,
227 ARMCP::ARMCPModifier Modifier,
228 bool AddCurrentAddress)
229 : ARMConstantPoolValue(C, id, ARMCP::CPExtSymbol, PCAdj, Modifier,
230 AddCurrentAddress),
231 S(std::string(s)) {}
232
233ARMConstantPoolSymbol *ARMConstantPoolSymbol::Create(LLVMContext &C,
234 StringRef s, unsigned ID,
235 unsigned char PCAdj) {
236 return new ARMConstantPoolSymbol(C, s, ID, PCAdj, ARMCP::no_modifier, false);
237}
238
239int ARMConstantPoolSymbol::getExistingMachineCPValue(MachineConstantPool *CP,
240 Align Alignment) {
241 return getExistingMachineCPValueImpl<ARMConstantPoolSymbol>(CP, Alignment);
242}
243
244bool ARMConstantPoolSymbol::hasSameValue(ARMConstantPoolValue *ACPV) {
245 const ARMConstantPoolSymbol *ACPS = dyn_cast<ARMConstantPoolSymbol>(Val: ACPV);
246 return ACPS && ACPS->S == S && ARMConstantPoolValue::hasSameValue(ACPV);
247}
248
249void ARMConstantPoolSymbol::addSelectionDAGCSEId(FoldingSetNodeID &ID) {
250 ID.AddString(String: S);
251 ARMConstantPoolValue::addSelectionDAGCSEId(ID);
252}
253
254void ARMConstantPoolSymbol::print(raw_ostream &O) const {
255 O << S;
256 ARMConstantPoolValue::print(O);
257}
258
259//===----------------------------------------------------------------------===//
260// ARMConstantPoolMBB
261//===----------------------------------------------------------------------===//
262
263ARMConstantPoolMBB::ARMConstantPoolMBB(LLVMContext &C,
264 const MachineBasicBlock *mbb,
265 unsigned id, unsigned char PCAdj,
266 ARMCP::ARMCPModifier Modifier,
267 bool AddCurrentAddress)
268 : ARMConstantPoolValue(C, id, ARMCP::CPMachineBasicBlock, PCAdj,
269 Modifier, AddCurrentAddress),
270 MBB(mbb) {}
271
272ARMConstantPoolMBB *ARMConstantPoolMBB::Create(LLVMContext &C,
273 const MachineBasicBlock *mbb,
274 unsigned ID,
275 unsigned char PCAdj) {
276 return new ARMConstantPoolMBB(C, mbb, ID, PCAdj, ARMCP::no_modifier, false);
277}
278
279int ARMConstantPoolMBB::getExistingMachineCPValue(MachineConstantPool *CP,
280 Align Alignment) {
281 return getExistingMachineCPValueImpl<ARMConstantPoolMBB>(CP, Alignment);
282}
283
284bool ARMConstantPoolMBB::hasSameValue(ARMConstantPoolValue *ACPV) {
285 const ARMConstantPoolMBB *ACPMBB = dyn_cast<ARMConstantPoolMBB>(Val: ACPV);
286 return ACPMBB && ACPMBB->MBB == MBB &&
287 ARMConstantPoolValue::hasSameValue(ACPV);
288}
289
290void ARMConstantPoolMBB::addSelectionDAGCSEId(FoldingSetNodeID &ID) {
291 ID.AddPointer(Ptr: MBB);
292 ARMConstantPoolValue::addSelectionDAGCSEId(ID);
293}
294
295void ARMConstantPoolMBB::print(raw_ostream &O) const {
296 O << printMBBReference(MBB: *MBB);
297 ARMConstantPoolValue::print(O);
298}
299