/Users/buildslave/jenkins/sharedspace/clang-stage2-coverage-R@2/llvm/lib/Target/Hexagon/HexagonTargetObjectFile.cpp
Line | Count | Source (jump to first uncovered line) |
1 | | //===-- HexagonTargetObjectFile.cpp ---------------------------------------===// |
2 | | // |
3 | | // The LLVM Compiler Infrastructure |
4 | | // |
5 | | // This file is distributed under the University of Illinois Open Source |
6 | | // License. See LICENSE.TXT for details. |
7 | | // |
8 | | //===----------------------------------------------------------------------===// |
9 | | // |
10 | | // This file contains the declarations of the HexagonTargetAsmInfo properties. |
11 | | // |
12 | | //===----------------------------------------------------------------------===// |
13 | | |
14 | | #define DEBUG_TYPE "hexagon-sdata" |
15 | | |
16 | | #include "HexagonTargetObjectFile.h" |
17 | | #include "llvm/ADT/SmallString.h" |
18 | | #include "llvm/ADT/StringRef.h" |
19 | | #include "llvm/ADT/Twine.h" |
20 | | #include "llvm/BinaryFormat/ELF.h" |
21 | | #include "llvm/IR/DataLayout.h" |
22 | | #include "llvm/IR/DerivedTypes.h" |
23 | | #include "llvm/IR/GlobalObject.h" |
24 | | #include "llvm/IR/GlobalValue.h" |
25 | | #include "llvm/IR/GlobalVariable.h" |
26 | | #include "llvm/IR/Type.h" |
27 | | #include "llvm/MC/MCContext.h" |
28 | | #include "llvm/MC/SectionKind.h" |
29 | | #include "llvm/Support/Casting.h" |
30 | | #include "llvm/Support/CommandLine.h" |
31 | | #include "llvm/Support/Debug.h" |
32 | | #include "llvm/Support/raw_ostream.h" |
33 | | #include "llvm/Target/TargetMachine.h" |
34 | | |
35 | | using namespace llvm; |
36 | | |
37 | | static cl::opt<unsigned> SmallDataThreshold("hexagon-small-data-threshold", |
38 | | cl::init(8), cl::Hidden, |
39 | | cl::desc("The maximum size of an object in the sdata section")); |
40 | | |
41 | | static cl::opt<bool> NoSmallDataSorting("mno-sort-sda", cl::init(false), |
42 | | cl::Hidden, cl::desc("Disable small data sections sorting")); |
43 | | |
44 | | static cl::opt<bool> StaticsInSData("hexagon-statics-in-small-data", |
45 | | cl::init(false), cl::Hidden, cl::ZeroOrMore, |
46 | | cl::desc("Allow static variables in .sdata")); |
47 | | |
48 | | static cl::opt<bool> TraceGVPlacement("trace-gv-placement", |
49 | | cl::Hidden, cl::init(false), |
50 | | cl::desc("Trace global value placement")); |
51 | | |
52 | | static cl::opt<bool> |
53 | | EmitJtInText("hexagon-emit-jt-text", cl::Hidden, cl::init(false), |
54 | | cl::desc("Emit hexagon jump tables in function section")); |
55 | | |
56 | | static cl::opt<bool> |
57 | | EmitLutInText("hexagon-emit-lut-text", cl::Hidden, cl::init(false), |
58 | | cl::desc("Emit hexagon lookup tables in function section")); |
59 | | |
60 | | // TraceGVPlacement controls messages for all builds. For builds with assertions |
61 | | // (debug or release), messages are also controlled by the usual debug flags |
62 | | // (e.g. -debug and -debug-only=globallayout) |
63 | 0 | #define TRACE_TO(s, X) s << 0 X0 |
64 | | #ifdef NDEBUG |
65 | | #define TRACE(X) \ |
66 | 12.5k | do 12.5k { \ |
67 | 10.1k | if (TraceGVPlacement10.1k ) { \ |
68 | 0 | TRACE_TO(errs(), X); \ |
69 | 0 | } \ |
70 | 12.5k | } while (false) |
71 | | #else |
72 | | #define TRACE(X) \ |
73 | | do { \ |
74 | | if (TraceGVPlacement) { \ |
75 | | TRACE_TO(errs(), X); \ |
76 | | } else { \ |
77 | | DEBUG(TRACE_TO(dbgs(), X)); \ |
78 | | } \ |
79 | | } while (false) |
80 | | #endif |
81 | | |
82 | | // Returns true if the section name is such that the symbol will be put |
83 | | // in a small data section. |
84 | | // For instance, global variables with section attributes such as ".sdata" |
85 | | // ".sdata.*", ".sbss", and ".sbss.*" will go into small data. |
86 | 15 | static bool isSmallDataSection(StringRef Sec) { |
87 | 15 | // sectionName is either ".sdata" or ".sbss". Looking for an exact match |
88 | 15 | // obviates the need for checks for section names such as ".sdatafoo". |
89 | 15 | if (Sec.equals(".sdata") || 15 Sec.equals(".sbss")13 || Sec.equals(".scommon")11 ) |
90 | 4 | return true; |
91 | 11 | // If either ".sdata." or ".sbss." is a substring of the section name |
92 | 11 | // then put the symbol in small data. |
93 | 11 | return Sec.find(".sdata.") != StringRef::npos || |
94 | 9 | Sec.find(".sbss.") != StringRef::npos || |
95 | 7 | Sec.find(".scommon.") != StringRef::npos; |
96 | 15 | } |
97 | | |
98 | 36 | static const char *getSectionSuffixForSize(unsigned Size) { |
99 | 36 | switch (Size) { |
100 | 0 | default: |
101 | 0 | return ""; |
102 | 4 | case 1: |
103 | 4 | return ".1"; |
104 | 0 | case 2: |
105 | 0 | return ".2"; |
106 | 19 | case 4: |
107 | 19 | return ".4"; |
108 | 13 | case 8: |
109 | 13 | return ".8"; |
110 | 0 | } |
111 | 0 | } |
112 | | |
113 | | void HexagonTargetObjectFile::Initialize(MCContext &Ctx, |
114 | 440 | const TargetMachine &TM) { |
115 | 440 | TargetLoweringObjectFileELF::Initialize(Ctx, TM); |
116 | 440 | InitializeELF(TM.Options.UseInitArray); |
117 | 440 | |
118 | 440 | SmallDataSection = |
119 | 440 | getContext().getELFSection(".sdata", ELF::SHT_PROGBITS, |
120 | 440 | ELF::SHF_WRITE | ELF::SHF_ALLOC | |
121 | 440 | ELF::SHF_HEX_GPREL); |
122 | 440 | SmallBSSSection = |
123 | 440 | getContext().getELFSection(".sbss", ELF::SHT_NOBITS, |
124 | 440 | ELF::SHF_WRITE | ELF::SHF_ALLOC | |
125 | 440 | ELF::SHF_HEX_GPREL); |
126 | 440 | } |
127 | | |
128 | | MCSection *HexagonTargetObjectFile::SelectSectionForGlobal( |
129 | 2.50k | const GlobalObject *GO, SectionKind Kind, const TargetMachine &TM) const { |
130 | 2.50k | TRACE("[SelectSectionForGlobal] GO(" << GO->getName() << ") "); |
131 | 2.50k | TRACE("input section(" << GO->getSection() << ") "); |
132 | 2.50k | |
133 | 2.50k | TRACE((GO->hasPrivateLinkage() ? "private_linkage " : "") |
134 | 2.50k | << (GO->hasLocalLinkage() ? "local_linkage " : "") |
135 | 2.50k | << (GO->hasInternalLinkage() ? "internal " : "") |
136 | 2.50k | << (GO->hasExternalLinkage() ? "external " : "") |
137 | 2.50k | << (GO->hasCommonLinkage() ? "common_linkage " : "") |
138 | 2.50k | << (GO->hasCommonLinkage() ? "common " : "" ) |
139 | 2.50k | << (Kind.isCommon() ? "kind_common " : "" ) |
140 | 2.50k | << (Kind.isBSS() ? "kind_bss " : "" ) |
141 | 2.50k | << (Kind.isBSSLocal() ? "kind_bss_local " : "" )); |
142 | 2.50k | |
143 | 2.50k | // If the lookup table is used by more than one function, do not place |
144 | 2.50k | // it in text section. |
145 | 2.50k | if (EmitLutInText && 2.50k GO->getName().startswith("switch.table")11 ) { |
146 | 5 | if (const Function *Fn = getLutUsedFunction(GO)) |
147 | 4 | return selectSectionForLookupTable(GO, TM, Fn); |
148 | 2.50k | } |
149 | 2.50k | |
150 | 2.50k | if (2.50k isGlobalInSmallSection(GO, TM)2.50k ) |
151 | 36 | return selectSmallSectionForGlobal(GO, Kind, TM); |
152 | 2.46k | |
153 | 2.46k | if (2.46k Kind.isCommon()2.46k ) { |
154 | 0 | // This is purely for LTO+Linker Script because commons don't really have a |
155 | 0 | // section. However, the BitcodeSectionWriter pass will query for the |
156 | 0 | // sections of commons (and the linker expects us to know their section) so |
157 | 0 | // we'll return one here. |
158 | 0 | return BSSSection; |
159 | 0 | } |
160 | 2.46k | |
161 | 2.46k | TRACE2.46k ("default_ELF_section\n"); |
162 | 2.46k | // Otherwise, we work the same as ELF. |
163 | 2.46k | return TargetLoweringObjectFileELF::SelectSectionForGlobal(GO, Kind, TM); |
164 | 2.46k | } |
165 | | |
166 | | MCSection *HexagonTargetObjectFile::getExplicitSectionGlobal( |
167 | 12 | const GlobalObject *GO, SectionKind Kind, const TargetMachine &TM) const { |
168 | 12 | TRACE("[getExplicitSectionGlobal] GO(" << GO->getName() << ") from(" |
169 | 12 | << GO->getSection() << ") "); |
170 | 12 | TRACE((GO->hasPrivateLinkage() ? "private_linkage " : "") |
171 | 12 | << (GO->hasLocalLinkage() ? "local_linkage " : "") |
172 | 12 | << (GO->hasInternalLinkage() ? "internal " : "") |
173 | 12 | << (GO->hasExternalLinkage() ? "external " : "") |
174 | 12 | << (GO->hasCommonLinkage() ? "common_linkage " : "") |
175 | 12 | << (GO->hasCommonLinkage() ? "common " : "" ) |
176 | 12 | << (Kind.isCommon() ? "kind_common " : "" ) |
177 | 12 | << (Kind.isBSS() ? "kind_bss " : "" ) |
178 | 12 | << (Kind.isBSSLocal() ? "kind_bss_local " : "" )); |
179 | 12 | |
180 | 12 | if (GO->hasSection()12 ) { |
181 | 12 | StringRef Section = GO->getSection(); |
182 | 12 | if (Section.find(".access.text.group") != StringRef::npos) |
183 | 0 | return getContext().getELFSection(GO->getSection(), ELF::SHT_PROGBITS, |
184 | 0 | ELF::SHF_ALLOC | ELF::SHF_EXECINSTR); |
185 | 12 | if (12 Section.find(".access.data.group") != StringRef::npos12 ) |
186 | 0 | return getContext().getELFSection(GO->getSection(), ELF::SHT_PROGBITS, |
187 | 0 | ELF::SHF_WRITE | ELF::SHF_ALLOC); |
188 | 12 | } |
189 | 12 | |
190 | 12 | if (12 isGlobalInSmallSection(GO, TM)12 ) |
191 | 4 | return selectSmallSectionForGlobal(GO, Kind, TM); |
192 | 8 | |
193 | 8 | // Otherwise, we work the same as ELF. |
194 | 8 | TRACE8 ("default_ELF_section\n"); |
195 | 8 | return TargetLoweringObjectFileELF::getExplicitSectionGlobal(GO, Kind, TM); |
196 | 8 | } |
197 | | |
198 | | /// Return true if this global value should be placed into small data/bss |
199 | | /// section. |
200 | | bool HexagonTargetObjectFile::isGlobalInSmallSection(const GlobalObject *GO, |
201 | 2.96k | const TargetMachine &TM) const { |
202 | 2.96k | // Only global variables, not functions. |
203 | 2.96k | DEBUG(dbgs() << "Checking if value is in small-data, -G" |
204 | 2.96k | << SmallDataThreshold << ": \"" << GO->getName() << "\": "); |
205 | 2.96k | const GlobalVariable *GVar = dyn_cast<GlobalVariable>(GO); |
206 | 2.96k | if (!GVar2.96k ) { |
207 | 2.41k | DEBUG(dbgs() << "no, not a global variable\n"); |
208 | 2.41k | return false; |
209 | 2.41k | } |
210 | 547 | |
211 | 547 | // Globals with external linkage that have an original section set must be |
212 | 547 | // emitted to that section, regardless of whether we would put them into |
213 | 547 | // small data or not. This is how we can support mixing -G0/-G8 in LTO. |
214 | 547 | if (547 GVar->hasSection()547 ) { |
215 | 15 | bool IsSmall = isSmallDataSection(GVar->getSection()); |
216 | 15 | DEBUG(dbgs() << (IsSmall ? "yes" : "no") << ", has section: " |
217 | 15 | << GVar->getSection() << '\n'); |
218 | 15 | return IsSmall; |
219 | 15 | } |
220 | 532 | |
221 | 532 | if (532 GVar->isConstant()532 ) { |
222 | 84 | DEBUG(dbgs() << "no, is a constant\n"); |
223 | 84 | return false; |
224 | 84 | } |
225 | 448 | |
226 | 448 | bool IsLocal = GVar->hasLocalLinkage(); |
227 | 448 | if (!StaticsInSData && 448 IsLocal448 ) { |
228 | 5 | DEBUG(dbgs() << "no, is static\n"); |
229 | 5 | return false; |
230 | 5 | } |
231 | 443 | |
232 | 443 | Type *GType = GVar->getType(); |
233 | 443 | if (PointerType *PT = dyn_cast<PointerType>(GType)) |
234 | 443 | GType = PT->getElementType(); |
235 | 443 | |
236 | 443 | if (isa<ArrayType>(GType)443 ) { |
237 | 179 | DEBUG(dbgs() << "no, is an array\n"); |
238 | 179 | return false; |
239 | 179 | } |
240 | 264 | |
241 | 264 | // If the type is a struct with no body provided, treat is conservatively. |
242 | 264 | // There cannot be actual definitions of object of such a type in this CU |
243 | 264 | // (only references), so assuming that they are not in sdata is safe. If |
244 | 264 | // these objects end up in the sdata, the references will still be valid. |
245 | 264 | if (StructType *264 ST264 = dyn_cast<StructType>(GType)) { |
246 | 21 | if (ST->isOpaque()21 ) { |
247 | 0 | DEBUG(dbgs() << "no, has opaque type\n"); |
248 | 0 | return false; |
249 | 0 | } |
250 | 264 | } |
251 | 264 | |
252 | 264 | unsigned Size = GVar->getParent()->getDataLayout().getTypeAllocSize(GType); |
253 | 264 | if (Size == 0264 ) { |
254 | 0 | DEBUG(dbgs() << "no, has size 0\n"); |
255 | 0 | return false; |
256 | 0 | } |
257 | 264 | if (264 Size > SmallDataThreshold264 ) { |
258 | 76 | DEBUG(dbgs() << "no, size exceeds sdata threshold: " << Size << '\n'); |
259 | 76 | return false; |
260 | 76 | } |
261 | 188 | |
262 | 188 | DEBUG188 (dbgs() << "yes\n"); |
263 | 188 | return true; |
264 | 188 | } |
265 | | |
266 | 2.41k | bool HexagonTargetObjectFile::isSmallDataEnabled() const { |
267 | 2.41k | return SmallDataThreshold > 0; |
268 | 2.41k | } |
269 | | |
270 | 0 | unsigned HexagonTargetObjectFile::getSmallDataSize() const { |
271 | 0 | return SmallDataThreshold; |
272 | 0 | } |
273 | | |
274 | | bool HexagonTargetObjectFile::shouldPutJumpTableInFunctionSection( |
275 | 4 | bool UsesLabelDifference, const Function &F) const { |
276 | 4 | return EmitJtInText; |
277 | 4 | } |
278 | | |
279 | | /// Descends any type down to "elementary" components, |
280 | | /// discovering the smallest addressable one. |
281 | | /// If zero is returned, declaration will not be modified. |
282 | | unsigned HexagonTargetObjectFile::getSmallestAddressableSize(const Type *Ty, |
283 | 40 | const GlobalValue *GV, const TargetMachine &TM) const { |
284 | 40 | // Assign the smallest element access size to the highest |
285 | 40 | // value which assembler can handle. |
286 | 40 | unsigned SmallestElement = 8; |
287 | 40 | |
288 | 40 | if (!Ty) |
289 | 0 | return 0; |
290 | 40 | switch (Ty->getTypeID()) { |
291 | 0 | case Type::StructTyID: { |
292 | 0 | const StructType *STy = cast<const StructType>(Ty); |
293 | 0 | for (auto &E : STy->elements()) { |
294 | 0 | unsigned AtomicSize = getSmallestAddressableSize(E, GV, TM); |
295 | 0 | if (AtomicSize < SmallestElement) |
296 | 0 | SmallestElement = AtomicSize; |
297 | 0 | } |
298 | 0 | return (STy->getNumElements() == 0) ? 00 : SmallestElement0 ; |
299 | 40 | } |
300 | 0 | case Type::ArrayTyID: { |
301 | 0 | const ArrayType *ATy = cast<const ArrayType>(Ty); |
302 | 0 | return getSmallestAddressableSize(ATy->getElementType(), GV, TM); |
303 | 40 | } |
304 | 0 | case Type::VectorTyID: { |
305 | 0 | const VectorType *PTy = cast<const VectorType>(Ty); |
306 | 0 | return getSmallestAddressableSize(PTy->getElementType(), GV, TM); |
307 | 40 | } |
308 | 40 | case Type::PointerTyID: |
309 | 40 | case Type::HalfTyID: |
310 | 40 | case Type::FloatTyID: |
311 | 40 | case Type::DoubleTyID: |
312 | 40 | case Type::IntegerTyID: { |
313 | 40 | const DataLayout &DL = GV->getParent()->getDataLayout(); |
314 | 40 | // It is unfortunate that DL's function take non-const Type*. |
315 | 40 | return DL.getTypeAllocSize(const_cast<Type*>(Ty)); |
316 | 40 | } |
317 | 0 | case Type::FunctionTyID: |
318 | 0 | case Type::VoidTyID: |
319 | 0 | case Type::X86_FP80TyID: |
320 | 0 | case Type::FP128TyID: |
321 | 0 | case Type::PPC_FP128TyID: |
322 | 0 | case Type::LabelTyID: |
323 | 0 | case Type::MetadataTyID: |
324 | 0 | case Type::X86_MMXTyID: |
325 | 0 | case Type::TokenTyID: |
326 | 0 | return 0; |
327 | 0 | } |
328 | 0 |
|
329 | 0 | return 0; |
330 | 0 | } |
331 | | |
332 | | MCSection *HexagonTargetObjectFile::selectSmallSectionForGlobal( |
333 | 40 | const GlobalObject *GO, SectionKind Kind, const TargetMachine &TM) const { |
334 | 40 | const Type *GTy = GO->getType()->getElementType(); |
335 | 40 | unsigned Size = getSmallestAddressableSize(GTy, GO, TM); |
336 | 40 | |
337 | 40 | // If we have -ffunction-section or -fdata-section then we should emit the |
338 | 40 | // global value to a unique section specifically for it... even for sdata. |
339 | 40 | bool EmitUniquedSection = TM.getDataSections(); |
340 | 40 | |
341 | 40 | TRACE("Small data. Size(" << Size << ")"); |
342 | 40 | // Handle Small Section classification here. |
343 | 40 | if (Kind.isBSS() || 40 Kind.isBSSLocal()20 ) { |
344 | 20 | // If -mno-sort-sda is not set, find out smallest accessible entity in |
345 | 20 | // declaration and add it to the section name string. |
346 | 20 | // Note. It does not track the actual usage of the value, only its de- |
347 | 20 | // claration. Also, compiler adds explicit pad fields to some struct |
348 | 20 | // declarations - they are currently counted towards smallest addres- |
349 | 20 | // sable entity. |
350 | 20 | if (NoSmallDataSorting20 ) { |
351 | 0 | TRACE(" default sbss\n"); |
352 | 0 | return SmallBSSSection; |
353 | 0 | } |
354 | 20 | |
355 | 20 | StringRef Prefix(".sbss"); |
356 | 20 | SmallString<128> Name(Prefix); |
357 | 20 | Name.append(getSectionSuffixForSize(Size)); |
358 | 20 | |
359 | 20 | if (EmitUniquedSection20 ) { |
360 | 0 | Name.append("."); |
361 | 0 | Name.append(GO->getName()); |
362 | 0 | } |
363 | 20 | TRACE(" unique sbss(" << Name << ")\n"); |
364 | 20 | return getContext().getELFSection(Name.str(), ELF::SHT_NOBITS, |
365 | 20 | ELF::SHF_WRITE | ELF::SHF_ALLOC | ELF::SHF_HEX_GPREL); |
366 | 20 | } |
367 | 20 | |
368 | 20 | if (20 Kind.isCommon()20 ) { |
369 | 0 | // This is purely for LTO+Linker Script because commons don't really have a |
370 | 0 | // section. However, the BitcodeSectionWriter pass will query for the |
371 | 0 | // sections of commons (and the linker expects us to know their section) so |
372 | 0 | // we'll return one here. |
373 | 0 | if (NoSmallDataSorting) |
374 | 0 | return BSSSection; |
375 | 0 |
|
376 | 0 | Twine Name = Twine(".scommon") + getSectionSuffixForSize(Size); |
377 | 0 | TRACE(" small COMMON (" << Name << ")\n"); |
378 | 0 |
|
379 | 0 | return getContext().getELFSection(Name.str(), ELF::SHT_NOBITS, |
380 | 0 | ELF::SHF_WRITE | ELF::SHF_ALLOC | |
381 | 0 | ELF::SHF_HEX_GPREL); |
382 | 0 | } |
383 | 20 | |
384 | 20 | // We could have changed sdata object to a constant... in this |
385 | 20 | // case the Kind could be wrong for it. |
386 | 20 | if (20 Kind.isMergeableConst()20 ) { |
387 | 0 | TRACE(" const_object_as_data "); |
388 | 0 | const GlobalVariable *GVar = dyn_cast<GlobalVariable>(GO); |
389 | 0 | if (GVar->hasSection() && 0 isSmallDataSection(GVar->getSection())0 ) |
390 | 0 | Kind = SectionKind::getData(); |
391 | 0 | } |
392 | 20 | |
393 | 20 | if (Kind.isData()20 ) { |
394 | 16 | if (NoSmallDataSorting16 ) { |
395 | 0 | TRACE(" default sdata\n"); |
396 | 0 | return SmallDataSection; |
397 | 0 | } |
398 | 16 | |
399 | 16 | StringRef Prefix(".sdata"); |
400 | 16 | SmallString<128> Name(Prefix); |
401 | 16 | Name.append(getSectionSuffixForSize(Size)); |
402 | 16 | |
403 | 16 | if (EmitUniquedSection16 ) { |
404 | 0 | Name.append("."); |
405 | 0 | Name.append(GO->getName()); |
406 | 0 | } |
407 | 16 | TRACE(" unique sdata(" << Name << ")\n"); |
408 | 16 | return getContext().getELFSection(Name.str(), ELF::SHT_PROGBITS, |
409 | 16 | ELF::SHF_WRITE | ELF::SHF_ALLOC | ELF::SHF_HEX_GPREL); |
410 | 16 | } |
411 | 4 | |
412 | 4 | TRACE4 ("default ELF section\n"); |
413 | 4 | // Otherwise, we work the same as ELF. |
414 | 4 | return TargetLoweringObjectFileELF::SelectSectionForGlobal(GO, Kind, TM); |
415 | 4 | } |
416 | | |
417 | | // Return the function that uses the lookup table. If there are more |
418 | | // than one live function that uses this look table, bail out and place |
419 | | // the lookup table in default section. |
420 | | const Function * |
421 | 5 | HexagonTargetObjectFile::getLutUsedFunction(const GlobalObject *GO) const { |
422 | 5 | const Function *ReturnFn = nullptr; |
423 | 6 | for (auto U : GO->users()) { |
424 | 6 | // validate each instance of user to be a live function. |
425 | 6 | auto *I = dyn_cast<Instruction>(U); |
426 | 6 | if (!I) |
427 | 0 | continue; |
428 | 6 | auto *Bb = I->getParent(); |
429 | 6 | if (!Bb) |
430 | 0 | continue; |
431 | 6 | auto *UserFn = Bb->getParent(); |
432 | 6 | if (!ReturnFn) |
433 | 5 | ReturnFn = UserFn; |
434 | 1 | else if (1 ReturnFn != UserFn1 ) |
435 | 1 | return nullptr; |
436 | 4 | } |
437 | 4 | return ReturnFn; |
438 | 4 | } |
439 | | |
440 | | MCSection *HexagonTargetObjectFile::selectSectionForLookupTable( |
441 | 4 | const GlobalObject *GO, const TargetMachine &TM, const Function *Fn) const { |
442 | 4 | |
443 | 4 | SectionKind Kind = SectionKind::getText(); |
444 | 4 | // If the function has explicit section, place the lookup table in this |
445 | 4 | // explicit section. |
446 | 4 | if (Fn->hasSection()) |
447 | 2 | return getExplicitSectionGlobal(Fn, Kind, TM); |
448 | 2 | |
449 | 2 | const auto *FuncObj = dyn_cast<GlobalObject>(Fn); |
450 | 2 | return SelectSectionForGlobal(FuncObj, Kind, TM); |
451 | 2 | } |