1//===-- llvm/MC/MCAsmInfo.h - Asm info --------------------------*- C++ -*-===// 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 a class to be used as the basis for target specific 11// asm writers. This class primarily takes care of global printing constants, 12// which are used in very similar ways across all targets. 13// 14//===----------------------------------------------------------------------===// 15 16#ifndef LLVM_MC_MCASMINFO_H 17#define LLVM_MC_MCASMINFO_H 18 19#include "llvm/ADT/StringRef.h" 20#include "llvm/MC/MCDirectives.h" 21#include "llvm/MC/MCDwarf.h" 22#include "llvm/MC/MCTargetOptions.h" 23#include <vector> 24 25namespace llvm { 26 27class MCContext; 28class MCExpr; 29class MCSection; 30class MCStreamer; 31class MCSymbol; 32 33namespace WinEH { 34 35enum class EncodingType { 36 Invalid, /// Invalid 37 Alpha, /// Windows Alpha 38 Alpha64, /// Windows AXP64 39 ARM, /// Windows NT (Windows on ARM) 40 CE, /// Windows CE ARM, PowerPC, SH3, SH4 41 Itanium, /// Windows x64, Windows Itanium (IA-64) 42 X86, /// Windows x86, uses no CFI, just EH tables 43 MIPS = Alpha, 44}; 45 46} // end namespace WinEH 47 48namespace LCOMM { 49 50enum LCOMMType { NoAlignment, ByteAlignment, Log2Alignment }; 51 52} // end namespace LCOMM 53 54/// This class is intended to be used as a base class for asm 55/// properties and features specific to the target. 56class MCAsmInfo { 57protected: 58 //===------------------------------------------------------------------===// 59 // Properties to be set by the target writer, used to configure asm printer. 60 // 61 62 /// Code pointer size in bytes. Default is 4. 63 unsigned CodePointerSize = 4; 64 65 /// Size of the stack slot reserved for callee-saved registers, in bytes. 66 /// Default is same as pointer size. 67 unsigned CalleeSaveStackSlotSize = 4; 68 69 /// True if target is little endian. Default is true. 70 bool IsLittleEndian = true; 71 72 /// True if target stack grow up. Default is false. 73 bool StackGrowsUp = false; 74 75 /// True if this target has the MachO .subsections_via_symbols directive. 76 /// Default is false. 77 bool HasSubsectionsViaSymbols = false; 78 79 /// True if this is a MachO target that supports the macho-specific .zerofill 80 /// directive for emitting BSS Symbols. Default is false. 81 bool HasMachoZeroFillDirective = false; 82 83 /// True if this is a MachO target that supports the macho-specific .tbss 84 /// directive for emitting thread local BSS Symbols. Default is false. 85 bool HasMachoTBSSDirective = false; 86 87 /// This is the maximum possible length of an instruction, which is needed to 88 /// compute the size of an inline asm. Defaults to 4. 89 unsigned MaxInstLength = 4; 90 91 /// Every possible instruction length is a multiple of this value. Factored 92 /// out in .debug_frame and .debug_line. Defaults to 1. 93 unsigned MinInstAlignment = 1; 94 95 /// The '$' token, when not referencing an identifier or constant, refers to 96 /// the current PC. Defaults to false. 97 bool DollarIsPC = false; 98 99 /// This string, if specified, is used to separate instructions from each 100 /// other when on the same line. Defaults to ';' 101 const char *SeparatorString; 102 103 /// This indicates the comment character used by the assembler. Defaults to 104 /// "#" 105 StringRef CommentString; 106 107 /// This is appended to emitted labels. Defaults to ":" 108 const char *LabelSuffix; 109 110 // Print the EH begin symbol with an assignment. Defaults to false. 111 bool UseAssignmentForEHBegin = false; 112 113 // Do we need to create a local symbol for .size? 114 bool NeedsLocalForSize = false; 115 116 /// This prefix is used for globals like constant pool entries that are 117 /// completely private to the .s file and should not have names in the .o 118 /// file. Defaults to "L" 119 StringRef PrivateGlobalPrefix; 120 121 /// This prefix is used for labels for basic blocks. Defaults to the same as 122 /// PrivateGlobalPrefix. 123 StringRef PrivateLabelPrefix; 124 125 /// This prefix is used for symbols that should be passed through the 126 /// assembler but be removed by the linker. This is 'l' on Darwin, currently 127 /// used for some ObjC metadata. The default of "" meast that for this system 128 /// a plain private symbol should be used. Defaults to "". 129 StringRef LinkerPrivateGlobalPrefix; 130 131 /// If these are nonempty, they contain a directive to emit before and after 132 /// an inline assembly statement. Defaults to "#APP\n", "#NO_APP\n" 133 const char *InlineAsmStart; 134 const char *InlineAsmEnd; 135 136 /// These are assembly directives that tells the assembler to interpret the 137 /// following instructions differently. Defaults to ".code16", ".code32", 138 /// ".code64". 139 const char *Code16Directive; 140 const char *Code32Directive; 141 const char *Code64Directive; 142 143 /// Which dialect of an assembler variant to use. Defaults to 0 144 unsigned AssemblerDialect = 0; 145 146 /// This is true if the assembler allows @ characters in symbol names. 147 /// Defaults to false. 148 bool AllowAtInName = false; 149 150 /// If this is true, symbol names with invalid characters will be printed in 151 /// quotes. 152 bool SupportsQuotedNames = true; 153 154 /// This is true if data region markers should be printed as 155 /// ".data_region/.end_data_region" directives. If false, use "$d/$a" labels 156 /// instead. 157 bool UseDataRegionDirectives = false; 158 159 //===--- Data Emission Directives -------------------------------------===// 160 161 /// This should be set to the directive used to get some number of zero bytes 162 /// emitted to the current section. Common cases are "\t.zero\t" and 163 /// "\t.space\t". If this is set to null, the Data*bitsDirective's will be 164 /// used to emit zero bytes. Defaults to "\t.zero\t" 165 const char *ZeroDirective; 166 167 /// This directive allows emission of an ascii string with the standard C 168 /// escape characters embedded into it. Defaults to "\t.ascii\t" 169 const char *AsciiDirective; 170 171 /// If not null, this allows for special handling of zero terminated strings 172 /// on this target. This is commonly supported as ".asciz". If a target 173 /// doesn't support this, it can be set to null. Defaults to "\t.asciz\t" 174 const char *AscizDirective; 175 176 /// These directives are used to output some unit of integer data to the 177 /// current section. If a data directive is set to null, smaller data 178 /// directives will be used to emit the large sizes. Defaults to "\t.byte\t", 179 /// "\t.short\t", "\t.long\t", "\t.quad\t" 180 const char *Data8bitsDirective; 181 const char *Data16bitsDirective; 182 const char *Data32bitsDirective; 183 const char *Data64bitsDirective; 184 185 /// If non-null, a directive that is used to emit a word which should be 186 /// relocated as a 64-bit GP-relative offset, e.g. .gpdword on Mips. Defaults 187 /// to nullptr. 188 const char *GPRel64Directive = nullptr; 189 190 /// If non-null, a directive that is used to emit a word which should be 191 /// relocated as a 32-bit GP-relative offset, e.g. .gpword on Mips or .gprel32 192 /// on Alpha. Defaults to nullptr. 193 const char *GPRel32Directive = nullptr; 194 195 /// If non-null, directives that are used to emit a word/dword which should 196 /// be relocated as a 32/64-bit DTP/TP-relative offset, e.g. .dtprelword/ 197 /// .dtpreldword/.tprelword/.tpreldword on Mips. 198 const char *DTPRel32Directive = nullptr; 199 const char *DTPRel64Directive = nullptr; 200 const char *TPRel32Directive = nullptr; 201 const char *TPRel64Directive = nullptr; 202 203 /// This is true if this target uses "Sun Style" syntax for section switching 204 /// ("#alloc,#write" etc) instead of the normal ELF syntax (,"a,w") in 205 /// .section directives. Defaults to false. 206 bool SunStyleELFSectionSwitchSyntax = false; 207 208 /// This is true if this target uses ELF '.section' directive before the 209 /// '.bss' one. It's used for PPC/Linux which doesn't support the '.bss' 210 /// directive only. Defaults to false. 211 bool UsesELFSectionDirectiveForBSS = false; 212 213 bool NeedsDwarfSectionOffsetDirective = false; 214 215 //===--- Alignment Information ----------------------------------------===// 216 217 /// If this is true (the default) then the asmprinter emits ".align N" 218 /// directives, where N is the number of bytes to align to. Otherwise, it 219 /// emits ".align log2(N)", e.g. 3 to align to an 8 byte boundary. Defaults 220 /// to true. 221 bool AlignmentIsInBytes = true; 222 223 /// If non-zero, this is used to fill the executable space created as the 224 /// result of a alignment directive. Defaults to 0 225 unsigned TextAlignFillValue = 0; 226 227 //===--- Global Variable Emission Directives --------------------------===// 228 229 /// This is the directive used to declare a global entity. Defaults to 230 /// ".globl". 231 const char *GlobalDirective; 232 233 /// True if the expression 234 /// .long f - g 235 /// uses a relocation but it can be suppressed by writing 236 /// a = f - g 237 /// .long a 238 bool SetDirectiveSuppressesReloc = false; 239 240 /// False if the assembler requires that we use 241 /// \code 242 /// Lc = a - b 243 /// .long Lc 244 /// \endcode 245 // 246 /// instead of 247 // 248 /// \code 249 /// .long a - b 250 /// \endcode 251 /// 252 /// Defaults to true. 253 bool HasAggressiveSymbolFolding = true; 254 255 /// True is .comm's and .lcomms optional alignment is to be specified in bytes 256 /// instead of log2(n). Defaults to true. 257 bool COMMDirectiveAlignmentIsInBytes = true; 258 259 /// Describes if the .lcomm directive for the target supports an alignment 260 /// argument and how it is interpreted. Defaults to NoAlignment. 261 LCOMM::LCOMMType LCOMMDirectiveAlignmentType = LCOMM::NoAlignment; 262 263 // True if the target allows .align directives on functions. This is true for 264 // most targets, so defaults to true. 265 bool HasFunctionAlignment = true; 266 267 /// True if the target has .type and .size directives, this is true for most 268 /// ELF targets. Defaults to true. 269 bool HasDotTypeDotSizeDirective = true; 270 271 /// True if the target has a single parameter .file directive, this is true 272 /// for ELF targets. Defaults to true. 273 bool HasSingleParameterDotFile = true; 274 275 /// True if the target has a .ident directive, this is true for ELF targets. 276 /// Defaults to false. 277 bool HasIdentDirective = false; 278 279 /// True if this target supports the MachO .no_dead_strip directive. Defaults 280 /// to false. 281 bool HasNoDeadStrip = false; 282 283 /// True if this target supports the MachO .alt_entry directive. Defaults to 284 /// false. 285 bool HasAltEntry = false; 286 287 /// Used to declare a global as being a weak symbol. Defaults to ".weak". 288 const char *WeakDirective; 289 290 /// This directive, if non-null, is used to declare a global as being a weak 291 /// undefined symbol. Defaults to nullptr. 292 const char *WeakRefDirective = nullptr; 293 294 /// True if we have a directive to declare a global as being a weak defined 295 /// symbol. Defaults to false. 296 bool HasWeakDefDirective = false; 297 298 /// True if we have a directive to declare a global as being a weak defined 299 /// symbol that can be hidden (unexported). Defaults to false. 300 bool HasWeakDefCanBeHiddenDirective = false; 301 302 /// True if we have a .linkonce directive. This is used on cygwin/mingw. 303 /// Defaults to false. 304 bool HasLinkOnceDirective = false; 305 306 /// This attribute, if not MCSA_Invalid, is used to declare a symbol as having 307 /// hidden visibility. Defaults to MCSA_Hidden. 308 MCSymbolAttr HiddenVisibilityAttr = MCSA_Hidden; 309 310 /// This attribute, if not MCSA_Invalid, is used to declare an undefined 311 /// symbol as having hidden visibility. Defaults to MCSA_Hidden. 312 MCSymbolAttr HiddenDeclarationVisibilityAttr = MCSA_Hidden; 313 314 /// This attribute, if not MCSA_Invalid, is used to declare a symbol as having 315 /// protected visibility. Defaults to MCSA_Protected 316 MCSymbolAttr ProtectedVisibilityAttr = MCSA_Protected; 317 318 //===--- Dwarf Emission Directives -----------------------------------===// 319 320 /// True if target supports emission of debugging information. Defaults to 321 /// false. 322 bool SupportsDebugInformation = false; 323 324 /// Exception handling format for the target. Defaults to None. 325 ExceptionHandling ExceptionsType = ExceptionHandling::None; 326 327 /// Windows exception handling data (.pdata) encoding. Defaults to Invalid. 328 WinEH::EncodingType WinEHEncodingType = WinEH::EncodingType::Invalid; 329 330 /// True if Dwarf2 output generally uses relocations for references to other 331 /// .debug_* sections. 332 bool DwarfUsesRelocationsAcrossSections = true; 333 334 /// True if DWARF FDE symbol reference relocations should be replaced by an 335 /// absolute difference. 336 bool DwarfFDESymbolsUseAbsDiff = false; 337 338 /// True if dwarf register numbers are printed instead of symbolic register 339 /// names in .cfi_* directives. Defaults to false. 340 bool DwarfRegNumForCFI = false; 341 342 /// True if target uses parens to indicate the symbol variant instead of @. 343 /// For example, foo(plt) instead of foo@plt. Defaults to false. 344 bool UseParensForSymbolVariant = false; 345 346 //===--- Prologue State ----------------------------------------------===// 347 348 std::vector<MCCFIInstruction> InitialFrameState; 349 350 //===--- Integrated Assembler Information ----------------------------===// 351 352 /// Should we use the integrated assembler? 353 /// The integrated assembler should be enabled by default (by the 354 /// constructors) when failing to parse a valid piece of assembly (inline 355 /// or otherwise) is considered a bug. It may then be overridden after 356 /// construction (see LLVMTargetMachine::initAsmInfo()). 357 bool UseIntegratedAssembler; 358 359 /// Preserve Comments in assembly 360 bool PreserveAsmComments; 361 362 /// Compress DWARF debug sections. Defaults to no compression. 363 DebugCompressionType CompressDebugSections = DebugCompressionType::None; 364 365 /// True if the integrated assembler should interpret 'a >> b' constant 366 /// expressions as logical rather than arithmetic. 367 bool UseLogicalShr = true; 368 369 // If true, emit GOTPCRELX/REX_GOTPCRELX instead of GOTPCREL, on 370 // X86_64 ELF. 371 bool RelaxELFRelocations = true; 372 373 // If true, then the lexer and expression parser will support %neg(), 374 // %hi(), and similar unary operators. 375 bool HasMipsExpressions = false; 376 377public: 378 explicit MCAsmInfo(); 379 virtual ~MCAsmInfo(); 380 381 /// Get the code pointer size in bytes. 382 unsigned getCodePointerSize() const { return CodePointerSize; } 383 384 /// Get the callee-saved register stack slot 385 /// size in bytes. 386 unsigned getCalleeSaveStackSlotSize() const { 387 return CalleeSaveStackSlotSize; 388 } 389 390 /// True if the target is little endian. 391 bool isLittleEndian() const { return IsLittleEndian; } 392 393 /// True if target stack grow up. 394 bool isStackGrowthDirectionUp() const { return StackGrowsUp; } 395 396 bool hasSubsectionsViaSymbols() const { return HasSubsectionsViaSymbols; } 397 398 // Data directive accessors. 399 400 const char *getData8bitsDirective() const { return Data8bitsDirective; } 401 const char *getData16bitsDirective() const { return Data16bitsDirective; } 402 const char *getData32bitsDirective() const { return Data32bitsDirective; } 403 const char *getData64bitsDirective() const { return Data64bitsDirective; } 404 const char *getGPRel64Directive() const { return GPRel64Directive; } 405 const char *getGPRel32Directive() const { return GPRel32Directive; } 406 const char *getDTPRel64Directive() const { return DTPRel64Directive; } 407 const char *getDTPRel32Directive() const { return DTPRel32Directive; } 408 const char *getTPRel64Directive() const { return TPRel64Directive; } 409 const char *getTPRel32Directive() const { return TPRel32Directive; } 410 411 /// Targets can implement this method to specify a section to switch to if the 412 /// translation unit doesn't have any trampolines that require an executable 413 /// stack. 414 virtual MCSection *getNonexecutableStackSection(MCContext &Ctx) const { 415 return nullptr; 416 } 417 418 /// \brief True if the section is atomized using the symbols in it. 419 /// This is false if the section is not atomized at all (most ELF sections) or 420 /// if it is atomized based on its contents (MachO' __TEXT,__cstring for 421 /// example). 422 virtual bool isSectionAtomizableBySymbols(const MCSection &Section) const; 423 424 virtual const MCExpr *getExprForPersonalitySymbol(const MCSymbol *Sym, 425 unsigned Encoding, 426 MCStreamer &Streamer) const; 427 428 virtual const MCExpr *getExprForFDESymbol(const MCSymbol *Sym, 429 unsigned Encoding, 430 MCStreamer &Streamer) const; 431 432 /// Return true if the identifier \p Name does not need quotes to be 433 /// syntactically correct. 434 virtual bool isValidUnquotedName(StringRef Name) const; 435 436 /// Return true if the .section directive should be omitted when 437 /// emitting \p SectionName. For example: 438 /// 439 /// shouldOmitSectionDirective(".text") 440 /// 441 /// returns false => .section .text,#alloc,#execinstr 442 /// returns true => .text 443 virtual bool shouldOmitSectionDirective(StringRef SectionName) const; 444 445 bool usesSunStyleELFSectionSwitchSyntax() const { 446 return SunStyleELFSectionSwitchSyntax; 447 } 448 449 bool usesELFSectionDirectiveForBSS() const { 450 return UsesELFSectionDirectiveForBSS; 451 } 452 453 bool needsDwarfSectionOffsetDirective() const { 454 return NeedsDwarfSectionOffsetDirective; 455 } 456 457 // Accessors. 458 459 bool hasMachoZeroFillDirective() const { return HasMachoZeroFillDirective; } 460 bool hasMachoTBSSDirective() const { return HasMachoTBSSDirective; } 461 unsigned getMaxInstLength() const { return MaxInstLength; } 462 unsigned getMinInstAlignment() const { return MinInstAlignment; } 463 bool getDollarIsPC() const { return DollarIsPC; } 464 const char *getSeparatorString() const { return SeparatorString; } 465 466 /// This indicates the column (zero-based) at which asm comments should be 467 /// printed. 468 unsigned getCommentColumn() const { return 40; } 469 470 StringRef getCommentString() const { return CommentString; } 471 const char *getLabelSuffix() const { return LabelSuffix; } 472 473 bool useAssignmentForEHBegin() const { return UseAssignmentForEHBegin; } 474 bool needsLocalForSize() const { return NeedsLocalForSize; } 475 StringRef getPrivateGlobalPrefix() const { return PrivateGlobalPrefix; } 476 StringRef getPrivateLabelPrefix() const { return PrivateLabelPrefix; } 477 478 bool hasLinkerPrivateGlobalPrefix() const { 479 return LinkerPrivateGlobalPrefix[0] != '\0'; 480 } 481 482 StringRef getLinkerPrivateGlobalPrefix() const { 483 if (hasLinkerPrivateGlobalPrefix()) 484 return LinkerPrivateGlobalPrefix; 485 return getPrivateGlobalPrefix(); 486 } 487 488 const char *getInlineAsmStart() const { return InlineAsmStart; } 489 const char *getInlineAsmEnd() const { return InlineAsmEnd; } 490 const char *getCode16Directive() const { return Code16Directive; } 491 const char *getCode32Directive() const { return Code32Directive; } 492 const char *getCode64Directive() const { return Code64Directive; } 493 unsigned getAssemblerDialect() const { return AssemblerDialect; } 494 bool doesAllowAtInName() const { return AllowAtInName; } 495 bool supportsNameQuoting() const { return SupportsQuotedNames; } 496 497 bool doesSupportDataRegionDirectives() const { 498 return UseDataRegionDirectives; 499 } 500 501 const char *getZeroDirective() const { return ZeroDirective; } 502 const char *getAsciiDirective() const { return AsciiDirective; } 503 const char *getAscizDirective() const { return AscizDirective; } 504 bool getAlignmentIsInBytes() const { return AlignmentIsInBytes; } 505 unsigned getTextAlignFillValue() const { return TextAlignFillValue; } 506 const char *getGlobalDirective() const { return GlobalDirective; } 507 508 bool doesSetDirectiveSuppressReloc() const { 509 return SetDirectiveSuppressesReloc; 510 } 511 512 bool hasAggressiveSymbolFolding() const { return HasAggressiveSymbolFolding; } 513 514 bool getCOMMDirectiveAlignmentIsInBytes() const { 515 return COMMDirectiveAlignmentIsInBytes; 516 } 517 518 LCOMM::LCOMMType getLCOMMDirectiveAlignmentType() const { 519 return LCOMMDirectiveAlignmentType; 520 } 521 522 bool hasFunctionAlignment() const { return HasFunctionAlignment; } 523 bool hasDotTypeDotSizeDirective() const { return HasDotTypeDotSizeDirective; } 524 bool hasSingleParameterDotFile() const { return HasSingleParameterDotFile; } 525 bool hasIdentDirective() const { return HasIdentDirective; } 526 bool hasNoDeadStrip() const { return HasNoDeadStrip; } 527 bool hasAltEntry() const { return HasAltEntry; } 528 const char *getWeakDirective() const { return WeakDirective; } 529 const char *getWeakRefDirective() const { return WeakRefDirective; } 530 bool hasWeakDefDirective() const { return HasWeakDefDirective; } 531 532 bool hasWeakDefCanBeHiddenDirective() const { 533 return HasWeakDefCanBeHiddenDirective; 534 } 535 536 bool hasLinkOnceDirective() const { return HasLinkOnceDirective; } 537 538 MCSymbolAttr getHiddenVisibilityAttr() const { return HiddenVisibilityAttr; } 539 540 MCSymbolAttr getHiddenDeclarationVisibilityAttr() const { 541 return HiddenDeclarationVisibilityAttr; 542 } 543 544 MCSymbolAttr getProtectedVisibilityAttr() const { 545 return ProtectedVisibilityAttr; 546 } 547 548 bool doesSupportDebugInformation() const { return SupportsDebugInformation; } 549 550 bool doesSupportExceptionHandling() const { 551 return ExceptionsType != ExceptionHandling::None; 552 } 553 554 ExceptionHandling getExceptionHandlingType() const { return ExceptionsType; } 555 WinEH::EncodingType getWinEHEncodingType() const { return WinEHEncodingType; } 556 557 void setExceptionsType(ExceptionHandling EH) { 558 ExceptionsType = EH; 559 } 560 561 /// Returns true if the exception handling method for the platform uses call 562 /// frame information to unwind. 563 bool usesCFIForEH() const { 564 return (ExceptionsType == ExceptionHandling::DwarfCFI || 565 ExceptionsType == ExceptionHandling::ARM || usesWindowsCFI()); 566 } 567 568 bool usesWindowsCFI() const { 569 return ExceptionsType == ExceptionHandling::WinEH && 570 (WinEHEncodingType != WinEH::EncodingType::Invalid && 571 WinEHEncodingType != WinEH::EncodingType::X86); 572 } 573 574 bool doesDwarfUseRelocationsAcrossSections() const { 575 return DwarfUsesRelocationsAcrossSections; 576 } 577 578 bool doDwarfFDESymbolsUseAbsDiff() const { return DwarfFDESymbolsUseAbsDiff; } 579 bool useDwarfRegNumForCFI() const { return DwarfRegNumForCFI; } 580 bool useParensForSymbolVariant() const { return UseParensForSymbolVariant; } 581 582 void addInitialFrameState(const MCCFIInstruction &Inst) { 583 InitialFrameState.push_back(Inst); 584 } 585 586 const std::vector<MCCFIInstruction> &getInitialFrameState() const { 587 return InitialFrameState; 588 } 589 590 /// Return true if assembly (inline or otherwise) should be parsed. 591 bool useIntegratedAssembler() const { return UseIntegratedAssembler; } 592 593 /// Set whether assembly (inline or otherwise) should be parsed. 594 virtual void setUseIntegratedAssembler(bool Value) { 595 UseIntegratedAssembler = Value; 596 } 597 598 /// Return true if assembly (inline or otherwise) should be parsed. 599 bool preserveAsmComments() const { return PreserveAsmComments; } 600 601 /// Set whether assembly (inline or otherwise) should be parsed. 602 virtual void setPreserveAsmComments(bool Value) { 603 PreserveAsmComments = Value; 604 } 605 606 DebugCompressionType compressDebugSections() const { 607 return CompressDebugSections; 608 } 609 610 void setCompressDebugSections(DebugCompressionType CompressDebugSections) { 611 this->CompressDebugSections = CompressDebugSections; 612 } 613 614 bool shouldUseLogicalShr() const { return UseLogicalShr; } 615 616 bool canRelaxRelocations() const { return RelaxELFRelocations; } 617 void setRelaxELFRelocations(bool V) { RelaxELFRelocations = V; } 618 bool hasMipsExpressions() const { return HasMipsExpressions; } 619}; 620 621} // end namespace llvm 622 623#endif // LLVM_MC_MCASMINFO_H 624