clang  9.0.0svn
TargetInfo.h
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1 //===--- TargetInfo.h - Expose information about the target -----*- 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 /// \file
10 /// Defines the clang::TargetInfo interface.
11 ///
12 //===----------------------------------------------------------------------===//
13 
14 #ifndef LLVM_CLANG_BASIC_TARGETINFO_H
15 #define LLVM_CLANG_BASIC_TARGETINFO_H
16 
18 #include "clang/Basic/LLVM.h"
19 #include "clang/Basic/Specifiers.h"
22 #include "llvm/ADT/APInt.h"
23 #include "llvm/ADT/IntrusiveRefCntPtr.h"
24 #include "llvm/ADT/Optional.h"
25 #include "llvm/ADT/SmallSet.h"
26 #include "llvm/ADT/StringMap.h"
27 #include "llvm/ADT/StringRef.h"
28 #include "llvm/ADT/Triple.h"
29 #include "llvm/IR/DataLayout.h"
30 #include "llvm/Support/DataTypes.h"
31 #include "llvm/Support/VersionTuple.h"
32 #include <cassert>
33 #include <string>
34 #include <vector>
35 
36 namespace llvm {
37 struct fltSemantics;
38 }
39 
40 namespace clang {
41 class DiagnosticsEngine;
42 class LangOptions;
43 class CodeGenOptions;
44 class MacroBuilder;
45 class QualType;
46 class SourceLocation;
47 class SourceManager;
48 
49 namespace Builtin { struct Info; }
50 
51 /// Fields controlling how types are laid out in memory; these may need to
52 /// be copied for targets like AMDGPU that base their ABIs on an auxiliary
53 /// CPU target.
55  unsigned char PointerWidth, PointerAlign;
56  unsigned char BoolWidth, BoolAlign;
57  unsigned char IntWidth, IntAlign;
58  unsigned char HalfWidth, HalfAlign;
59  unsigned char FloatWidth, FloatAlign;
60  unsigned char DoubleWidth, DoubleAlign;
61  unsigned char LongDoubleWidth, LongDoubleAlign, Float128Align;
62  unsigned char LargeArrayMinWidth, LargeArrayAlign;
63  unsigned char LongWidth, LongAlign;
64  unsigned char LongLongWidth, LongLongAlign;
65 
66  // Fixed point bit widths
67  unsigned char ShortAccumWidth, ShortAccumAlign;
68  unsigned char AccumWidth, AccumAlign;
69  unsigned char LongAccumWidth, LongAccumAlign;
70  unsigned char ShortFractWidth, ShortFractAlign;
71  unsigned char FractWidth, FractAlign;
72  unsigned char LongFractWidth, LongFractAlign;
73 
74  // If true, unsigned fixed point types have the same number of fractional bits
75  // as their signed counterparts, forcing the unsigned types to have one extra
76  // bit of padding. Otherwise, unsigned fixed point types have
77  // one more fractional bit than its corresponding signed type. This is false
78  // by default.
80 
81  // Fixed point integral and fractional bit sizes
82  // Saturated types share the same integral/fractional bits as their
83  // corresponding unsaturated types.
84  // For simplicity, the fractional bits in a _Fract type will be one less the
85  // width of that _Fract type. This leaves all signed _Fract types having no
86  // padding and unsigned _Fract types will only have 1 bit of padding after the
87  // sign if PaddingOnUnsignedFixedPoint is set.
88  unsigned char ShortAccumScale;
89  unsigned char AccumScale;
90  unsigned char LongAccumScale;
91 
92  unsigned char SuitableAlign;
94  unsigned char MinGlobalAlign;
95 
96  unsigned short NewAlign;
97  unsigned short MaxVectorAlign;
98  unsigned short MaxTLSAlign;
99 
100  const llvm::fltSemantics *HalfFormat, *FloatFormat, *DoubleFormat,
101  *LongDoubleFormat, *Float128Format;
102 
103  ///===---- Target Data Type Query Methods -------------------------------===//
104  enum IntType {
105  NoInt = 0,
115  UnsignedLongLong
116  };
117 
118  enum RealType {
119  NoFloat = 255,
120  Float = 0,
123  Float128
124  };
125 protected:
126  IntType SizeType, IntMaxType, PtrDiffType, IntPtrType, WCharType,
127  WIntType, Char16Type, Char32Type, Int64Type, SigAtomicType,
128  ProcessIDType;
129 
130  /// Whether Objective-C's built-in boolean type should be signed char.
131  ///
132  /// Otherwise, when this flag is not set, the normal built-in boolean type is
133  /// used.
135 
136  /// Control whether the alignment of bit-field types is respected when laying
137  /// out structures. If true, then the alignment of the bit-field type will be
138  /// used to (a) impact the alignment of the containing structure, and (b)
139  /// ensure that the individual bit-field will not straddle an alignment
140  /// boundary.
142 
143  /// Whether zero length bitfields (e.g., int : 0;) force alignment of
144  /// the next bitfield.
145  ///
146  /// If the alignment of the zero length bitfield is greater than the member
147  /// that follows it, `bar', `bar' will be aligned as the type of the
148  /// zero-length bitfield.
150 
151  /// Whether explicit bit field alignment attributes are honored.
153 
154  /// If non-zero, specifies a fixed alignment value for bitfields that follow
155  /// zero length bitfield, regardless of the zero length bitfield type.
157 };
158 
159 /// Exposes information about the current target.
160 ///
161 class TargetInfo : public virtual TransferrableTargetInfo,
162  public RefCountedBase<TargetInfo> {
163  std::shared_ptr<TargetOptions> TargetOpts;
164  llvm::Triple Triple;
165 protected:
166  // Target values set by the ctor of the actual target implementation. Default
167  // values are specified by the TargetInfo constructor.
168  bool BigEndian;
171  bool NoAsmVariants; // True if {|} are normal characters.
172  bool HasLegalHalfType; // True if the backend supports operations on the half
173  // LLVM IR type.
176 
177  unsigned char MaxAtomicPromoteWidth, MaxAtomicInlineWidth;
178  unsigned short SimdDefaultAlign;
179  std::unique_ptr<llvm::DataLayout> DataLayout;
180  const char *MCountName;
181  unsigned char RegParmMax, SSERegParmMax;
184 
185  mutable StringRef PlatformName;
186  mutable VersionTuple PlatformMinVersion;
187 
188  unsigned HasAlignMac68kSupport : 1;
189  unsigned RealTypeUsesObjCFPRet : 3;
191 
192  unsigned HasBuiltinMSVaList : 1;
193 
194  unsigned IsRenderScriptTarget : 1;
195 
196  // TargetInfo Constructor. Default initializes all fields.
197  TargetInfo(const llvm::Triple &T);
198 
199  void resetDataLayout(StringRef DL) {
200  DataLayout.reset(new llvm::DataLayout(DL));
201  }
202 
203 public:
204  /// Construct a target for the given options.
205  ///
206  /// \param Opts - The options to use to initialize the target. The target may
207  /// modify the options to canonicalize the target feature information to match
208  /// what the backend expects.
209  static TargetInfo *
210  CreateTargetInfo(DiagnosticsEngine &Diags,
211  const std::shared_ptr<TargetOptions> &Opts);
212 
213  virtual ~TargetInfo();
214 
215  /// Retrieve the target options.
217  assert(TargetOpts && "Missing target options");
218  return *TargetOpts;
219  }
220 
221  /// The different kinds of __builtin_va_list types defined by
222  /// the target implementation.
224  /// typedef char* __builtin_va_list;
225  CharPtrBuiltinVaList = 0,
226 
227  /// typedef void* __builtin_va_list;
229 
230  /// __builtin_va_list as defined by the AArch64 ABI
231  /// http://infocenter.arm.com/help/topic/com.arm.doc.ihi0055a/IHI0055A_aapcs64.pdf
233 
234  /// __builtin_va_list as defined by the PNaCl ABI:
235  /// http://www.chromium.org/nativeclient/pnacl/bitcode-abi#TOC-Machine-Types
237 
238  /// __builtin_va_list as defined by the Power ABI:
239  /// https://www.power.org
240  /// /resources/downloads/Power-Arch-32-bit-ABI-supp-1.0-Embedded.pdf
242 
243  /// __builtin_va_list as defined by the x86-64 ABI:
244  /// http://refspecs.linuxbase.org/elf/x86_64-abi-0.21.pdf
246 
247  /// __builtin_va_list as defined by ARM AAPCS ABI
248  /// http://infocenter.arm.com
249  // /help/topic/com.arm.doc.ihi0042d/IHI0042D_aapcs.pdf
251 
252  // typedef struct __va_list_tag
253  // {
254  // long __gpr;
255  // long __fpr;
256  // void *__overflow_arg_area;
257  // void *__reg_save_area;
258  // } va_list[1];
259  SystemZBuiltinVaList
260  };
261 
262 protected:
263  /// Specify if mangling based on address space map should be used or
264  /// not for language specific address spaces
266 
267 public:
268  IntType getSizeType() const { return SizeType; }
270  switch (SizeType) {
271  case UnsignedShort:
272  return SignedShort;
273  case UnsignedInt:
274  return SignedInt;
275  case UnsignedLong:
276  return SignedLong;
277  case UnsignedLongLong:
278  return SignedLongLong;
279  default:
280  llvm_unreachable("Invalid SizeType");
281  }
282  }
283  IntType getIntMaxType() const { return IntMaxType; }
285  return getCorrespondingUnsignedType(IntMaxType);
286  }
287  IntType getPtrDiffType(unsigned AddrSpace) const {
288  return AddrSpace == 0 ? PtrDiffType : getPtrDiffTypeV(AddrSpace);
289  }
290  IntType getUnsignedPtrDiffType(unsigned AddrSpace) const {
291  return getCorrespondingUnsignedType(getPtrDiffType(AddrSpace));
292  }
293  IntType getIntPtrType() const { return IntPtrType; }
295  return getCorrespondingUnsignedType(IntPtrType);
296  }
297  IntType getWCharType() const { return WCharType; }
298  IntType getWIntType() const { return WIntType; }
299  IntType getChar16Type() const { return Char16Type; }
300  IntType getChar32Type() const { return Char32Type; }
301  IntType getInt64Type() const { return Int64Type; }
303  return getCorrespondingUnsignedType(Int64Type);
304  }
305  IntType getSigAtomicType() const { return SigAtomicType; }
306  IntType getProcessIDType() const { return ProcessIDType; }
307 
309  switch (T) {
310  case SignedChar:
311  return UnsignedChar;
312  case SignedShort:
313  return UnsignedShort;
314  case SignedInt:
315  return UnsignedInt;
316  case SignedLong:
317  return UnsignedLong;
318  case SignedLongLong:
319  return UnsignedLongLong;
320  default:
321  llvm_unreachable("Unexpected signed integer type");
322  }
323  }
324 
325  /// In the event this target uses the same number of fractional bits for its
326  /// unsigned types as it does with its signed counterparts, there will be
327  /// exactly one bit of padding.
328  /// Return true if unsigned fixed point types have padding for this target.
330  return PaddingOnUnsignedFixedPoint;
331  }
332 
333  /// Return the width (in bits) of the specified integer type enum.
334  ///
335  /// For example, SignedInt -> getIntWidth().
336  unsigned getTypeWidth(IntType T) const;
337 
338  /// Return integer type with specified width.
339  virtual IntType getIntTypeByWidth(unsigned BitWidth, bool IsSigned) const;
340 
341  /// Return the smallest integer type with at least the specified width.
342  virtual IntType getLeastIntTypeByWidth(unsigned BitWidth,
343  bool IsSigned) const;
344 
345  /// Return floating point type with specified width.
346  RealType getRealTypeByWidth(unsigned BitWidth) const;
347 
348  /// Return the alignment (in bits) of the specified integer type enum.
349  ///
350  /// For example, SignedInt -> getIntAlign().
351  unsigned getTypeAlign(IntType T) const;
352 
353  /// Returns true if the type is signed; false otherwise.
354  static bool isTypeSigned(IntType T);
355 
356  /// Return the width of pointers on this target, for the
357  /// specified address space.
358  uint64_t getPointerWidth(unsigned AddrSpace) const {
359  return AddrSpace == 0 ? PointerWidth : getPointerWidthV(AddrSpace);
360  }
361  uint64_t getPointerAlign(unsigned AddrSpace) const {
362  return AddrSpace == 0 ? PointerAlign : getPointerAlignV(AddrSpace);
363  }
364 
365  /// Return the maximum width of pointers on this target.
366  virtual uint64_t getMaxPointerWidth() const {
367  return PointerWidth;
368  }
369 
370  /// Get integer value for null pointer.
371  /// \param AddrSpace address space of pointee in source language.
372  virtual uint64_t getNullPointerValue(LangAS AddrSpace) const { return 0; }
373 
374  /// Return the size of '_Bool' and C++ 'bool' for this target, in bits.
375  unsigned getBoolWidth() const { return BoolWidth; }
376 
377  /// Return the alignment of '_Bool' and C++ 'bool' for this target.
378  unsigned getBoolAlign() const { return BoolAlign; }
379 
380  unsigned getCharWidth() const { return 8; } // FIXME
381  unsigned getCharAlign() const { return 8; } // FIXME
382 
383  /// Return the size of 'signed short' and 'unsigned short' for this
384  /// target, in bits.
385  unsigned getShortWidth() const { return 16; } // FIXME
386 
387  /// Return the alignment of 'signed short' and 'unsigned short' for
388  /// this target.
389  unsigned getShortAlign() const { return 16; } // FIXME
390 
391  /// getIntWidth/Align - Return the size of 'signed int' and 'unsigned int' for
392  /// this target, in bits.
393  unsigned getIntWidth() const { return IntWidth; }
394  unsigned getIntAlign() const { return IntAlign; }
395 
396  /// getLongWidth/Align - Return the size of 'signed long' and 'unsigned long'
397  /// for this target, in bits.
398  unsigned getLongWidth() const { return LongWidth; }
399  unsigned getLongAlign() const { return LongAlign; }
400 
401  /// getLongLongWidth/Align - Return the size of 'signed long long' and
402  /// 'unsigned long long' for this target, in bits.
403  unsigned getLongLongWidth() const { return LongLongWidth; }
404  unsigned getLongLongAlign() const { return LongLongAlign; }
405 
406  /// getShortAccumWidth/Align - Return the size of 'signed short _Accum' and
407  /// 'unsigned short _Accum' for this target, in bits.
408  unsigned getShortAccumWidth() const { return ShortAccumWidth; }
409  unsigned getShortAccumAlign() const { return ShortAccumAlign; }
410 
411  /// getAccumWidth/Align - Return the size of 'signed _Accum' and
412  /// 'unsigned _Accum' for this target, in bits.
413  unsigned getAccumWidth() const { return AccumWidth; }
414  unsigned getAccumAlign() const { return AccumAlign; }
415 
416  /// getLongAccumWidth/Align - Return the size of 'signed long _Accum' and
417  /// 'unsigned long _Accum' for this target, in bits.
418  unsigned getLongAccumWidth() const { return LongAccumWidth; }
419  unsigned getLongAccumAlign() const { return LongAccumAlign; }
420 
421  /// getShortFractWidth/Align - Return the size of 'signed short _Fract' and
422  /// 'unsigned short _Fract' for this target, in bits.
423  unsigned getShortFractWidth() const { return ShortFractWidth; }
424  unsigned getShortFractAlign() const { return ShortFractAlign; }
425 
426  /// getFractWidth/Align - Return the size of 'signed _Fract' and
427  /// 'unsigned _Fract' for this target, in bits.
428  unsigned getFractWidth() const { return FractWidth; }
429  unsigned getFractAlign() const { return FractAlign; }
430 
431  /// getLongFractWidth/Align - Return the size of 'signed long _Fract' and
432  /// 'unsigned long _Fract' for this target, in bits.
433  unsigned getLongFractWidth() const { return LongFractWidth; }
434  unsigned getLongFractAlign() const { return LongFractAlign; }
435 
436  /// getShortAccumScale/IBits - Return the number of fractional/integral bits
437  /// in a 'signed short _Accum' type.
438  unsigned getShortAccumScale() const { return ShortAccumScale; }
439  unsigned getShortAccumIBits() const {
440  return ShortAccumWidth - ShortAccumScale - 1;
441  }
442 
443  /// getAccumScale/IBits - Return the number of fractional/integral bits
444  /// in a 'signed _Accum' type.
445  unsigned getAccumScale() const { return AccumScale; }
446  unsigned getAccumIBits() const { return AccumWidth - AccumScale - 1; }
447 
448  /// getLongAccumScale/IBits - Return the number of fractional/integral bits
449  /// in a 'signed long _Accum' type.
450  unsigned getLongAccumScale() const { return LongAccumScale; }
451  unsigned getLongAccumIBits() const {
452  return LongAccumWidth - LongAccumScale - 1;
453  }
454 
455  /// getUnsignedShortAccumScale/IBits - Return the number of
456  /// fractional/integral bits in a 'unsigned short _Accum' type.
457  unsigned getUnsignedShortAccumScale() const {
458  return PaddingOnUnsignedFixedPoint ? ShortAccumScale : ShortAccumScale + 1;
459  }
460  unsigned getUnsignedShortAccumIBits() const {
461  return PaddingOnUnsignedFixedPoint
462  ? getShortAccumIBits()
463  : ShortAccumWidth - getUnsignedShortAccumScale();
464  }
465 
466  /// getUnsignedAccumScale/IBits - Return the number of fractional/integral
467  /// bits in a 'unsigned _Accum' type.
468  unsigned getUnsignedAccumScale() const {
469  return PaddingOnUnsignedFixedPoint ? AccumScale : AccumScale + 1;
470  }
471  unsigned getUnsignedAccumIBits() const {
472  return PaddingOnUnsignedFixedPoint ? getAccumIBits()
473  : AccumWidth - getUnsignedAccumScale();
474  }
475 
476  /// getUnsignedLongAccumScale/IBits - Return the number of fractional/integral
477  /// bits in a 'unsigned long _Accum' type.
478  unsigned getUnsignedLongAccumScale() const {
479  return PaddingOnUnsignedFixedPoint ? LongAccumScale : LongAccumScale + 1;
480  }
481  unsigned getUnsignedLongAccumIBits() const {
482  return PaddingOnUnsignedFixedPoint
483  ? getLongAccumIBits()
484  : LongAccumWidth - getUnsignedLongAccumScale();
485  }
486 
487  /// getShortFractScale - Return the number of fractional bits
488  /// in a 'signed short _Fract' type.
489  unsigned getShortFractScale() const { return ShortFractWidth - 1; }
490 
491  /// getFractScale - Return the number of fractional bits
492  /// in a 'signed _Fract' type.
493  unsigned getFractScale() const { return FractWidth - 1; }
494 
495  /// getLongFractScale - Return the number of fractional bits
496  /// in a 'signed long _Fract' type.
497  unsigned getLongFractScale() const { return LongFractWidth - 1; }
498 
499  /// getUnsignedShortFractScale - Return the number of fractional bits
500  /// in a 'unsigned short _Fract' type.
501  unsigned getUnsignedShortFractScale() const {
502  return PaddingOnUnsignedFixedPoint ? getShortFractScale()
503  : getShortFractScale() + 1;
504  }
505 
506  /// getUnsignedFractScale - Return the number of fractional bits
507  /// in a 'unsigned _Fract' type.
508  unsigned getUnsignedFractScale() const {
509  return PaddingOnUnsignedFixedPoint ? getFractScale() : getFractScale() + 1;
510  }
511 
512  /// getUnsignedLongFractScale - Return the number of fractional bits
513  /// in a 'unsigned long _Fract' type.
514  unsigned getUnsignedLongFractScale() const {
515  return PaddingOnUnsignedFixedPoint ? getLongFractScale()
516  : getLongFractScale() + 1;
517  }
518 
519  /// Determine whether the __int128 type is supported on this target.
520  virtual bool hasInt128Type() const {
521  return (getPointerWidth(0) >= 64) || getTargetOpts().ForceEnableInt128;
522  } // FIXME
523 
524  /// Determine whether _Float16 is supported on this target.
525  virtual bool hasLegalHalfType() const { return HasLegalHalfType; }
526 
527  /// Determine whether the __float128 type is supported on this target.
528  virtual bool hasFloat128Type() const { return HasFloat128; }
529 
530  /// Determine whether the _Float16 type is supported on this target.
531  virtual bool hasFloat16Type() const { return HasFloat16; }
532 
533  /// Return the alignment that is suitable for storing any
534  /// object with a fundamental alignment requirement.
535  unsigned getSuitableAlign() const { return SuitableAlign; }
536 
537  /// Return the default alignment for __attribute__((aligned)) on
538  /// this target, to be used if no alignment value is specified.
540  return DefaultAlignForAttributeAligned;
541  }
542 
543  /// getMinGlobalAlign - Return the minimum alignment of a global variable,
544  /// unless its alignment is explicitly reduced via attributes.
545  unsigned getMinGlobalAlign() const { return MinGlobalAlign; }
546 
547  /// Return the largest alignment for which a suitably-sized allocation with
548  /// '::operator new(size_t)' is guaranteed to produce a correctly-aligned
549  /// pointer.
550  unsigned getNewAlign() const {
551  return NewAlign ? NewAlign : std::max(LongDoubleAlign, LongLongAlign);
552  }
553 
554  /// getWCharWidth/Align - Return the size of 'wchar_t' for this target, in
555  /// bits.
556  unsigned getWCharWidth() const { return getTypeWidth(WCharType); }
557  unsigned getWCharAlign() const { return getTypeAlign(WCharType); }
558 
559  /// getChar16Width/Align - Return the size of 'char16_t' for this target, in
560  /// bits.
561  unsigned getChar16Width() const { return getTypeWidth(Char16Type); }
562  unsigned getChar16Align() const { return getTypeAlign(Char16Type); }
563 
564  /// getChar32Width/Align - Return the size of 'char32_t' for this target, in
565  /// bits.
566  unsigned getChar32Width() const { return getTypeWidth(Char32Type); }
567  unsigned getChar32Align() const { return getTypeAlign(Char32Type); }
568 
569  /// getHalfWidth/Align/Format - Return the size/align/format of 'half'.
570  unsigned getHalfWidth() const { return HalfWidth; }
571  unsigned getHalfAlign() const { return HalfAlign; }
572  const llvm::fltSemantics &getHalfFormat() const { return *HalfFormat; }
573 
574  /// getFloatWidth/Align/Format - Return the size/align/format of 'float'.
575  unsigned getFloatWidth() const { return FloatWidth; }
576  unsigned getFloatAlign() const { return FloatAlign; }
577  const llvm::fltSemantics &getFloatFormat() const { return *FloatFormat; }
578 
579  /// getDoubleWidth/Align/Format - Return the size/align/format of 'double'.
580  unsigned getDoubleWidth() const { return DoubleWidth; }
581  unsigned getDoubleAlign() const { return DoubleAlign; }
582  const llvm::fltSemantics &getDoubleFormat() const { return *DoubleFormat; }
583 
584  /// getLongDoubleWidth/Align/Format - Return the size/align/format of 'long
585  /// double'.
586  unsigned getLongDoubleWidth() const { return LongDoubleWidth; }
587  unsigned getLongDoubleAlign() const { return LongDoubleAlign; }
588  const llvm::fltSemantics &getLongDoubleFormat() const {
589  return *LongDoubleFormat;
590  }
591 
592  /// getFloat128Width/Align/Format - Return the size/align/format of
593  /// '__float128'.
594  unsigned getFloat128Width() const { return 128; }
595  unsigned getFloat128Align() const { return Float128Align; }
596  const llvm::fltSemantics &getFloat128Format() const {
597  return *Float128Format;
598  }
599 
600  /// Return true if the 'long double' type should be mangled like
601  /// __float128.
602  virtual bool useFloat128ManglingForLongDouble() const { return false; }
603 
604  /// Return the value for the C99 FLT_EVAL_METHOD macro.
605  virtual unsigned getFloatEvalMethod() const { return 0; }
606 
607  // getLargeArrayMinWidth/Align - Return the minimum array size that is
608  // 'large' and its alignment.
609  unsigned getLargeArrayMinWidth() const { return LargeArrayMinWidth; }
610  unsigned getLargeArrayAlign() const { return LargeArrayAlign; }
611 
612  /// Return the maximum width lock-free atomic operation which will
613  /// ever be supported for the given target
614  unsigned getMaxAtomicPromoteWidth() const { return MaxAtomicPromoteWidth; }
615  /// Return the maximum width lock-free atomic operation which can be
616  /// inlined given the supported features of the given target.
617  unsigned getMaxAtomicInlineWidth() const { return MaxAtomicInlineWidth; }
618  /// Set the maximum inline or promote width lock-free atomic operation
619  /// for the given target.
620  virtual void setMaxAtomicWidth() {}
621  /// Returns true if the given target supports lock-free atomic
622  /// operations at the specified width and alignment.
623  virtual bool hasBuiltinAtomic(uint64_t AtomicSizeInBits,
624  uint64_t AlignmentInBits) const {
625  return AtomicSizeInBits <= AlignmentInBits &&
626  AtomicSizeInBits <= getMaxAtomicInlineWidth() &&
627  (AtomicSizeInBits <= getCharWidth() ||
628  llvm::isPowerOf2_64(AtomicSizeInBits / getCharWidth()));
629  }
630 
631  /// Return the maximum vector alignment supported for the given target.
632  unsigned getMaxVectorAlign() const { return MaxVectorAlign; }
633  /// Return default simd alignment for the given target. Generally, this
634  /// value is type-specific, but this alignment can be used for most of the
635  /// types for the given target.
636  unsigned getSimdDefaultAlign() const { return SimdDefaultAlign; }
637 
638  /// Return the size of intmax_t and uintmax_t for this target, in bits.
639  unsigned getIntMaxTWidth() const {
640  return getTypeWidth(IntMaxType);
641  }
642 
643  // Return the size of unwind_word for this target.
644  virtual unsigned getUnwindWordWidth() const { return getPointerWidth(0); }
645 
646  /// Return the "preferred" register width on this target.
647  virtual unsigned getRegisterWidth() const {
648  // Currently we assume the register width on the target matches the pointer
649  // width, we can introduce a new variable for this if/when some target wants
650  // it.
651  return PointerWidth;
652  }
653 
654  /// Returns the name of the mcount instrumentation function.
655  const char *getMCountName() const {
656  return MCountName;
657  }
658 
659  /// Check if the Objective-C built-in boolean type should be signed
660  /// char.
661  ///
662  /// Otherwise, if this returns false, the normal built-in boolean type
663  /// should also be used for Objective-C.
665  return UseSignedCharForObjCBool;
666  }
668  UseSignedCharForObjCBool = false;
669  }
670 
671  /// Check whether the alignment of bit-field types is respected
672  /// when laying out structures.
674  return UseBitFieldTypeAlignment;
675  }
676 
677  /// Check whether zero length bitfields should force alignment of
678  /// the next member.
680  return UseZeroLengthBitfieldAlignment;
681  }
682 
683  /// Get the fixed alignment value in bits for a member that follows
684  /// a zero length bitfield.
685  unsigned getZeroLengthBitfieldBoundary() const {
686  return ZeroLengthBitfieldBoundary;
687  }
688 
689  /// Check whether explicit bitfield alignment attributes should be
690  // honored, as in "__attribute__((aligned(2))) int b : 1;".
692  return UseExplicitBitFieldAlignment;
693  }
694 
695  /// Check whether this target support '\#pragma options align=mac68k'.
696  bool hasAlignMac68kSupport() const {
697  return HasAlignMac68kSupport;
698  }
699 
700  /// Return the user string for the specified integer type enum.
701  ///
702  /// For example, SignedShort -> "short".
703  static const char *getTypeName(IntType T);
704 
705  /// Return the constant suffix for the specified integer type enum.
706  ///
707  /// For example, SignedLong -> "L".
708  const char *getTypeConstantSuffix(IntType T) const;
709 
710  /// Return the printf format modifier for the specified
711  /// integer type enum.
712  ///
713  /// For example, SignedLong -> "l".
714  static const char *getTypeFormatModifier(IntType T);
715 
716  /// Check whether the given real type should use the "fpret" flavor of
717  /// Objective-C message passing on this target.
719  return RealTypeUsesObjCFPRet & (1 << T);
720  }
721 
722  /// Check whether _Complex long double should use the "fp2ret" flavor
723  /// of Objective-C message passing on this target.
725  return ComplexLongDoubleUsesFP2Ret;
726  }
727 
728  /// Check whether llvm intrinsics such as llvm.convert.to.fp16 should be used
729  /// to convert to and from __fp16.
730  /// FIXME: This function should be removed once all targets stop using the
731  /// conversion intrinsics.
732  virtual bool useFP16ConversionIntrinsics() const {
733  return true;
734  }
735 
736  /// Specify if mangling based on address space map should be used or
737  /// not for language specific address spaces
739  return UseAddrSpaceMapMangling;
740  }
741 
742  ///===---- Other target property query methods --------------------------===//
743 
744  /// Appends the target-specific \#define values for this
745  /// target set to the specified buffer.
746  virtual void getTargetDefines(const LangOptions &Opts,
747  MacroBuilder &Builder) const = 0;
748 
749 
750  /// Return information about target-specific builtins for
751  /// the current primary target, and info about which builtins are non-portable
752  /// across the current set of primary and secondary targets.
753  virtual ArrayRef<Builtin::Info> getTargetBuiltins() const = 0;
754 
755  /// The __builtin_clz* and __builtin_ctz* built-in
756  /// functions are specified to have undefined results for zero inputs, but
757  /// on targets that support these operations in a way that provides
758  /// well-defined results for zero without loss of performance, it is a good
759  /// idea to avoid optimizing based on that undef behavior.
760  virtual bool isCLZForZeroUndef() const { return true; }
761 
762  /// Returns the kind of __builtin_va_list type that should be used
763  /// with this target.
764  virtual BuiltinVaListKind getBuiltinVaListKind() const = 0;
765 
766  /// Returns whether or not type \c __builtin_ms_va_list type is
767  /// available on this target.
768  bool hasBuiltinMSVaList() const { return HasBuiltinMSVaList; }
769 
770  /// Returns true for RenderScript.
771  bool isRenderScriptTarget() const { return IsRenderScriptTarget; }
772 
773  /// Returns whether the passed in string is a valid clobber in an
774  /// inline asm statement.
775  ///
776  /// This is used by Sema.
777  bool isValidClobber(StringRef Name) const;
778 
779  /// Returns whether the passed in string is a valid register name
780  /// according to GCC.
781  ///
782  /// This is used by Sema for inline asm statements.
783  virtual bool isValidGCCRegisterName(StringRef Name) const;
784 
785  /// Returns the "normalized" GCC register name.
786  ///
787  /// ReturnCannonical true will return the register name without any additions
788  /// such as "{}" or "%" in it's canonical form, for example:
789  /// ReturnCanonical = true and Name = "rax", will return "ax".
790  StringRef getNormalizedGCCRegisterName(StringRef Name,
791  bool ReturnCanonical = false) const;
792 
793  /// Extracts a register from the passed constraint (if it is a
794  /// single-register constraint) and the asm label expression related to a
795  /// variable in the input or output list of an inline asm statement.
796  ///
797  /// This function is used by Sema in order to diagnose conflicts between
798  /// the clobber list and the input/output lists.
799  virtual StringRef getConstraintRegister(StringRef Constraint,
800  StringRef Expression) const {
801  return "";
802  }
803 
804  struct ConstraintInfo {
805  enum {
806  CI_None = 0x00,
807  CI_AllowsMemory = 0x01,
808  CI_AllowsRegister = 0x02,
809  CI_ReadWrite = 0x04, // "+r" output constraint (read and write).
810  CI_HasMatchingInput = 0x08, // This output operand has a matching input.
811  CI_ImmediateConstant = 0x10, // This operand must be an immediate constant
812  CI_EarlyClobber = 0x20, // "&" output constraint (early clobber).
813  };
814  unsigned Flags;
816  struct {
817  int Min;
818  int Max;
820  } ImmRange;
821  llvm::SmallSet<int, 4> ImmSet;
822 
823  std::string ConstraintStr; // constraint: "=rm"
824  std::string Name; // Operand name: [foo] with no []'s.
825  public:
826  ConstraintInfo(StringRef ConstraintStr, StringRef Name)
827  : Flags(0), TiedOperand(-1), ConstraintStr(ConstraintStr.str()),
828  Name(Name.str()) {
829  ImmRange.Min = ImmRange.Max = 0;
830  ImmRange.isConstrained = false;
831  }
832 
833  const std::string &getConstraintStr() const { return ConstraintStr; }
834  const std::string &getName() const { return Name; }
835  bool isReadWrite() const { return (Flags & CI_ReadWrite) != 0; }
836  bool earlyClobber() { return (Flags & CI_EarlyClobber) != 0; }
837  bool allowsRegister() const { return (Flags & CI_AllowsRegister) != 0; }
838  bool allowsMemory() const { return (Flags & CI_AllowsMemory) != 0; }
839 
840  /// Return true if this output operand has a matching
841  /// (tied) input operand.
842  bool hasMatchingInput() const { return (Flags & CI_HasMatchingInput) != 0; }
843 
844  /// Return true if this input operand is a matching
845  /// constraint that ties it to an output operand.
846  ///
847  /// If this returns true then getTiedOperand will indicate which output
848  /// operand this is tied to.
849  bool hasTiedOperand() const { return TiedOperand != -1; }
850  unsigned getTiedOperand() const {
851  assert(hasTiedOperand() && "Has no tied operand!");
852  return (unsigned)TiedOperand;
853  }
854 
856  return (Flags & CI_ImmediateConstant) != 0;
857  }
858  bool isValidAsmImmediate(const llvm::APInt &Value) const {
859  if (!ImmSet.empty())
860  return Value.isSignedIntN(32) &&
861  ImmSet.count(Value.getZExtValue()) != 0;
862  return !ImmRange.isConstrained ||
863  (Value.sge(ImmRange.Min) && Value.sle(ImmRange.Max));
864  }
865 
866  void setIsReadWrite() { Flags |= CI_ReadWrite; }
867  void setEarlyClobber() { Flags |= CI_EarlyClobber; }
868  void setAllowsMemory() { Flags |= CI_AllowsMemory; }
869  void setAllowsRegister() { Flags |= CI_AllowsRegister; }
870  void setHasMatchingInput() { Flags |= CI_HasMatchingInput; }
871  void setRequiresImmediate(int Min, int Max) {
872  Flags |= CI_ImmediateConstant;
873  ImmRange.Min = Min;
874  ImmRange.Max = Max;
875  ImmRange.isConstrained = true;
876  }
878  Flags |= CI_ImmediateConstant;
879  for (int Exact : Exacts)
880  ImmSet.insert(Exact);
881  }
882  void setRequiresImmediate(int Exact) {
883  Flags |= CI_ImmediateConstant;
884  ImmSet.insert(Exact);
885  }
887  Flags |= CI_ImmediateConstant;
888  }
889 
890  /// Indicate that this is an input operand that is tied to
891  /// the specified output operand.
892  ///
893  /// Copy over the various constraint information from the output.
894  void setTiedOperand(unsigned N, ConstraintInfo &Output) {
895  Output.setHasMatchingInput();
896  Flags = Output.Flags;
897  TiedOperand = N;
898  // Don't copy Name or constraint string.
899  }
900  };
901 
902  /// Validate register name used for global register variables.
903  ///
904  /// This function returns true if the register passed in RegName can be used
905  /// for global register variables on this target. In addition, it returns
906  /// true in HasSizeMismatch if the size of the register doesn't match the
907  /// variable size passed in RegSize.
908  virtual bool validateGlobalRegisterVariable(StringRef RegName,
909  unsigned RegSize,
910  bool &HasSizeMismatch) const {
911  HasSizeMismatch = false;
912  return true;
913  }
914 
915  // validateOutputConstraint, validateInputConstraint - Checks that
916  // a constraint is valid and provides information about it.
917  // FIXME: These should return a real error instead of just true/false.
918  bool validateOutputConstraint(ConstraintInfo &Info) const;
919  bool validateInputConstraint(MutableArrayRef<ConstraintInfo> OutputConstraints,
920  ConstraintInfo &info) const;
921 
922  virtual bool validateOutputSize(StringRef /*Constraint*/,
923  unsigned /*Size*/) const {
924  return true;
925  }
926 
927  virtual bool validateInputSize(StringRef /*Constraint*/,
928  unsigned /*Size*/) const {
929  return true;
930  }
931  virtual bool
932  validateConstraintModifier(StringRef /*Constraint*/,
933  char /*Modifier*/,
934  unsigned /*Size*/,
935  std::string &/*SuggestedModifier*/) const {
936  return true;
937  }
938  virtual bool
939  validateAsmConstraint(const char *&Name,
940  TargetInfo::ConstraintInfo &info) const = 0;
941 
942  bool resolveSymbolicName(const char *&Name,
943  ArrayRef<ConstraintInfo> OutputConstraints,
944  unsigned &Index) const;
945 
946  // Constraint parm will be left pointing at the last character of
947  // the constraint. In practice, it won't be changed unless the
948  // constraint is longer than one character.
949  virtual std::string convertConstraint(const char *&Constraint) const {
950  // 'p' defaults to 'r', but can be overridden by targets.
951  if (*Constraint == 'p')
952  return std::string("r");
953  return std::string(1, *Constraint);
954  }
955 
956  /// Returns a string of target-specific clobbers, in LLVM format.
957  virtual const char *getClobbers() const = 0;
958 
959  /// Returns true if NaN encoding is IEEE 754-2008.
960  /// Only MIPS allows a different encoding.
961  virtual bool isNan2008() const {
962  return true;
963  }
964 
965  /// Returns the target triple of the primary target.
966  const llvm::Triple &getTriple() const {
967  return Triple;
968  }
969 
970  const llvm::DataLayout &getDataLayout() const {
971  assert(DataLayout && "Uninitialized DataLayout!");
972  return *DataLayout;
973  }
974 
975  struct GCCRegAlias {
976  const char * const Aliases[5];
977  const char * const Register;
978  };
979 
980  struct AddlRegName {
981  const char * const Names[5];
982  const unsigned RegNum;
983  };
984 
985  /// Does this target support "protected" visibility?
986  ///
987  /// Any target which dynamic libraries will naturally support
988  /// something like "default" (meaning that the symbol is visible
989  /// outside this shared object) and "hidden" (meaning that it isn't)
990  /// visibilities, but "protected" is really an ELF-specific concept
991  /// with weird semantics designed around the convenience of dynamic
992  /// linker implementations. Which is not to suggest that there's
993  /// consistent target-independent semantics for "default" visibility
994  /// either; the entire thing is pretty badly mangled.
995  virtual bool hasProtectedVisibility() const { return true; }
996 
997  /// An optional hook that targets can implement to perform semantic
998  /// checking on attribute((section("foo"))) specifiers.
999  ///
1000  /// In this case, "foo" is passed in to be checked. If the section
1001  /// specifier is invalid, the backend should return a non-empty string
1002  /// that indicates the problem.
1003  ///
1004  /// This hook is a simple quality of implementation feature to catch errors
1005  /// and give good diagnostics in cases when the assembler or code generator
1006  /// would otherwise reject the section specifier.
1007  ///
1008  virtual std::string isValidSectionSpecifier(StringRef SR) const {
1009  return "";
1010  }
1011 
1012  /// Set forced language options.
1013  ///
1014  /// Apply changes to the target information with respect to certain
1015  /// language options which change the target configuration and adjust
1016  /// the language based on the target options where applicable.
1017  virtual void adjust(LangOptions &Opts);
1018 
1019  /// Adjust target options based on codegen options.
1020  virtual void adjustTargetOptions(const CodeGenOptions &CGOpts,
1021  TargetOptions &TargetOpts) const {}
1022 
1023  /// Initialize the map with the default set of target features for the
1024  /// CPU this should include all legal feature strings on the target.
1025  ///
1026  /// \return False on error (invalid features).
1027  virtual bool initFeatureMap(llvm::StringMap<bool> &Features,
1028  DiagnosticsEngine &Diags, StringRef CPU,
1029  const std::vector<std::string> &FeatureVec) const;
1030 
1031  /// Get the ABI currently in use.
1032  virtual StringRef getABI() const { return StringRef(); }
1033 
1034  /// Get the C++ ABI currently in use.
1036  return TheCXXABI;
1037  }
1038 
1039  /// Target the specified CPU.
1040  ///
1041  /// \return False on error (invalid CPU name).
1042  virtual bool setCPU(const std::string &Name) {
1043  return false;
1044  }
1045 
1046  /// Fill a SmallVectorImpl with the valid values to setCPU.
1047  virtual void fillValidCPUList(SmallVectorImpl<StringRef> &Values) const {}
1048 
1049  /// brief Determine whether this TargetInfo supports the given CPU name.
1050  virtual bool isValidCPUName(StringRef Name) const {
1051  return true;
1052  }
1053 
1054  /// Use the specified ABI.
1055  ///
1056  /// \return False on error (invalid ABI name).
1057  virtual bool setABI(const std::string &Name) {
1058  return false;
1059  }
1060 
1061  /// Use the specified unit for FP math.
1062  ///
1063  /// \return False on error (invalid unit name).
1064  virtual bool setFPMath(StringRef Name) {
1065  return false;
1066  }
1067 
1068  /// Enable or disable a specific target feature;
1069  /// the feature name must be valid.
1070  virtual void setFeatureEnabled(llvm::StringMap<bool> &Features,
1071  StringRef Name,
1072  bool Enabled) const {
1073  Features[Name] = Enabled;
1074  }
1075 
1076  /// Determine whether this TargetInfo supports the given feature.
1077  virtual bool isValidFeatureName(StringRef Feature) const {
1078  return true;
1079  }
1080 
1081  /// Perform initialization based on the user configured
1082  /// set of features (e.g., +sse4).
1083  ///
1084  /// The list is guaranteed to have at most one entry per feature.
1085  ///
1086  /// The target may modify the features list, to change which options are
1087  /// passed onwards to the backend.
1088  /// FIXME: This part should be fixed so that we can change handleTargetFeatures
1089  /// to merely a TargetInfo initialization routine.
1090  ///
1091  /// \return False on error.
1092  virtual bool handleTargetFeatures(std::vector<std::string> &Features,
1093  DiagnosticsEngine &Diags) {
1094  return true;
1095  }
1096 
1097  /// Determine whether the given target has the given feature.
1098  virtual bool hasFeature(StringRef Feature) const {
1099  return false;
1100  }
1101 
1102  /// Identify whether this target supports multiversioning of functions,
1103  /// which requires support for cpu_supports and cpu_is functionality.
1105  return getTriple().getArch() == llvm::Triple::x86 ||
1106  getTriple().getArch() == llvm::Triple::x86_64;
1107  }
1108 
1109  /// Identify whether this target supports IFuncs.
1110  bool supportsIFunc() const { return getTriple().isOSBinFormatELF(); }
1111 
1112  // Validate the contents of the __builtin_cpu_supports(const char*)
1113  // argument.
1114  virtual bool validateCpuSupports(StringRef Name) const { return false; }
1115 
1116  // Return the target-specific priority for features/cpus/vendors so
1117  // that they can be properly sorted for checking.
1118  virtual unsigned multiVersionSortPriority(StringRef Name) const {
1119  return 0;
1120  }
1121 
1122  // Validate the contents of the __builtin_cpu_is(const char*)
1123  // argument.
1124  virtual bool validateCpuIs(StringRef Name) const { return false; }
1125 
1126  // Validate a cpu_dispatch/cpu_specific CPU option, which is a different list
1127  // from cpu_is, since it checks via features rather than CPUs directly.
1128  virtual bool validateCPUSpecificCPUDispatch(StringRef Name) const {
1129  return false;
1130  }
1131 
1132  // Get the character to be added for mangling purposes for cpu_specific.
1133  virtual char CPUSpecificManglingCharacter(StringRef Name) const {
1134  llvm_unreachable(
1135  "cpu_specific Multiversioning not implemented on this target");
1136  }
1137 
1138  // Get a list of the features that make up the CPU option for
1139  // cpu_specific/cpu_dispatch so that it can be passed to llvm as optimization
1140  // options.
1142  StringRef Name, llvm::SmallVectorImpl<StringRef> &Features) const {
1143  llvm_unreachable(
1144  "cpu_specific Multiversioning not implemented on this target");
1145  }
1146 
1147  // Returns maximal number of args passed in registers.
1148  unsigned getRegParmMax() const {
1149  assert(RegParmMax < 7 && "RegParmMax value is larger than AST can handle");
1150  return RegParmMax;
1151  }
1152 
1153  /// Whether the target supports thread-local storage.
1154  bool isTLSSupported() const {
1155  return TLSSupported;
1156  }
1157 
1158  /// Return the maximum alignment (in bits) of a TLS variable
1159  ///
1160  /// Gets the maximum alignment (in bits) of a TLS variable on this target.
1161  /// Returns zero if there is no such constraint.
1162  unsigned short getMaxTLSAlign() const {
1163  return MaxTLSAlign;
1164  }
1165 
1166  /// Whether target supports variable-length arrays.
1167  bool isVLASupported() const { return VLASupported; }
1168 
1169  /// Whether the target supports SEH __try.
1170  bool isSEHTrySupported() const {
1171  return getTriple().isOSWindows() &&
1172  (getTriple().getArch() == llvm::Triple::x86 ||
1173  getTriple().getArch() == llvm::Triple::x86_64 ||
1174  getTriple().getArch() == llvm::Triple::aarch64);
1175  }
1176 
1177  /// Return true if {|} are normal characters in the asm string.
1178  ///
1179  /// If this returns false (the default), then {abc|xyz} is syntax
1180  /// that says that when compiling for asm variant #0, "abc" should be
1181  /// generated, but when compiling for asm variant #1, "xyz" should be
1182  /// generated.
1183  bool hasNoAsmVariants() const {
1184  return NoAsmVariants;
1185  }
1186 
1187  /// Return the register number that __builtin_eh_return_regno would
1188  /// return with the specified argument.
1189  /// This corresponds with TargetLowering's getExceptionPointerRegister
1190  /// and getExceptionSelectorRegister in the backend.
1191  virtual int getEHDataRegisterNumber(unsigned RegNo) const {
1192  return -1;
1193  }
1194 
1195  /// Return the section to use for C++ static initialization functions.
1196  virtual const char *getStaticInitSectionSpecifier() const {
1197  return nullptr;
1198  }
1199 
1200  const LangASMap &getAddressSpaceMap() const { return *AddrSpaceMap; }
1201 
1202  /// Map from the address space field in builtin description strings to the
1203  /// language address space.
1204  virtual LangAS getOpenCLBuiltinAddressSpace(unsigned AS) const {
1205  return getLangASFromTargetAS(AS);
1206  }
1207 
1208  /// Map from the address space field in builtin description strings to the
1209  /// language address space.
1210  virtual LangAS getCUDABuiltinAddressSpace(unsigned AS) const {
1211  return getLangASFromTargetAS(AS);
1212  }
1213 
1214  /// Return an AST address space which can be used opportunistically
1215  /// for constant global memory. It must be possible to convert pointers into
1216  /// this address space to LangAS::Default. If no such address space exists,
1217  /// this may return None, and such optimizations will be disabled.
1219  return LangAS::Default;
1220  }
1221 
1222  /// Retrieve the name of the platform as it is used in the
1223  /// availability attribute.
1224  StringRef getPlatformName() const { return PlatformName; }
1225 
1226  /// Retrieve the minimum desired version of the platform, to
1227  /// which the program should be compiled.
1228  VersionTuple getPlatformMinVersion() const { return PlatformMinVersion; }
1229 
1230  bool isBigEndian() const { return BigEndian; }
1231  bool isLittleEndian() const { return !BigEndian; }
1232 
1236  CCMT_NonMember
1237  };
1238 
1239  /// Gets the default calling convention for the given target and
1240  /// declaration context.
1242  // Not all targets will specify an explicit calling convention that we can
1243  // express. This will always do the right thing, even though it's not
1244  // an explicit calling convention.
1245  return CC_C;
1246  }
1247 
1252  };
1253 
1254  /// Determines whether a given calling convention is valid for the
1255  /// target. A calling convention can either be accepted, produce a warning
1256  /// and be substituted with the default calling convention, or (someday)
1257  /// produce an error (such as using thiscall on a non-instance function).
1259  switch (CC) {
1260  default:
1261  return CCCR_Warning;
1262  case CC_C:
1263  return CCCR_OK;
1264  }
1265  }
1266 
1270  CCK_MicrosoftWin64
1271  };
1272 
1273  virtual CallingConvKind getCallingConvKind(bool ClangABICompat4) const;
1274 
1275  /// Controls if __builtin_longjmp / __builtin_setjmp can be lowered to
1276  /// llvm.eh.sjlj.longjmp / llvm.eh.sjlj.setjmp.
1277  virtual bool hasSjLjLowering() const {
1278  return false;
1279  }
1280 
1281  /// Check if the target supports CFProtection branch.
1282  virtual bool
1283  checkCFProtectionBranchSupported(DiagnosticsEngine &Diags) const;
1284 
1285  /// Check if the target supports CFProtection branch.
1286  virtual bool
1287  checkCFProtectionReturnSupported(DiagnosticsEngine &Diags) const;
1288 
1289  /// Whether target allows to overalign ABI-specified preferred alignment
1290  virtual bool allowsLargerPreferedTypeAlignment() const { return true; }
1291 
1292  /// Set supported OpenCL extensions and optional core features.
1293  virtual void setSupportedOpenCLOpts() {}
1294 
1295  /// Set supported OpenCL extensions as written on command line
1296  virtual void setOpenCLExtensionOpts() {
1297  for (const auto &Ext : getTargetOpts().OpenCLExtensionsAsWritten) {
1298  getTargetOpts().SupportedOpenCLOptions.support(Ext);
1299  }
1300  }
1301 
1302  /// Get supported OpenCL extensions and optional core features.
1304  return getTargetOpts().SupportedOpenCLOptions;
1305  }
1306 
1307  /// Get const supported OpenCL extensions and optional core features.
1309  return getTargetOpts().SupportedOpenCLOptions;
1310  }
1311 
1321  };
1322 
1323  /// Get address space for OpenCL type.
1324  virtual LangAS getOpenCLTypeAddrSpace(OpenCLTypeKind TK) const;
1325 
1326  /// \returns Target specific vtbl ptr address space.
1327  virtual unsigned getVtblPtrAddressSpace() const {
1328  return 0;
1329  }
1330 
1331  /// \returns If a target requires an address within a target specific address
1332  /// space \p AddressSpace to be converted in order to be used, then return the
1333  /// corresponding target specific DWARF address space.
1334  ///
1335  /// \returns Otherwise return None and no conversion will be emitted in the
1336  /// DWARF.
1337  virtual Optional<unsigned> getDWARFAddressSpace(unsigned AddressSpace) const {
1338  return None;
1339  }
1340 
1341  /// \returns The version of the SDK which was used during the compilation if
1342  /// one was specified, or an empty version otherwise.
1343  const llvm::VersionTuple &getSDKVersion() const {
1344  return getTargetOpts().SDKVersion;
1345  }
1346 
1347  /// Check the target is valid after it is fully initialized.
1348  virtual bool validateTarget(DiagnosticsEngine &Diags) const {
1349  return true;
1350  }
1351 
1352  virtual void setAuxTarget(const TargetInfo *Aux) {}
1353 
1354 protected:
1355  /// Copy type and layout related info.
1356  void copyAuxTarget(const TargetInfo *Aux);
1357  virtual uint64_t getPointerWidthV(unsigned AddrSpace) const {
1358  return PointerWidth;
1359  }
1360  virtual uint64_t getPointerAlignV(unsigned AddrSpace) const {
1361  return PointerAlign;
1362  }
1363  virtual enum IntType getPtrDiffTypeV(unsigned AddrSpace) const {
1364  return PtrDiffType;
1365  }
1366  virtual ArrayRef<const char *> getGCCRegNames() const = 0;
1367  virtual ArrayRef<GCCRegAlias> getGCCRegAliases() const = 0;
1369  return None;
1370  }
1371 
1372  private:
1373  // Assert the values for the fractional and integral bits for each fixed point
1374  // type follow the restrictions given in clause 6.2.6.3 of N1169.
1375  void CheckFixedPointBits() const;
1376 };
1377 
1378 } // end namespace clang
1379 
1380 #endif
unsigned getRegParmMax() const
Definition: TargetInfo.h:1148
TargetOptions & getTargetOpts() const
Retrieve the target options.
Definition: TargetInfo.h:216
IntType getInt64Type() const
Definition: TargetInfo.h:301
unsigned getHalfWidth() const
getHalfWidth/Align/Format - Return the size/align/format of &#39;half&#39;.
Definition: TargetInfo.h:570
unsigned getFloatWidth() const
getFloatWidth/Align/Format - Return the size/align/format of &#39;float&#39;.
Definition: TargetInfo.h:575
VersionTuple getPlatformMinVersion() const
Retrieve the minimum desired version of the platform, to which the program should be compiled...
Definition: TargetInfo.h:1228
unsigned getLongFractAlign() const
Definition: TargetInfo.h:434
bool hasBuiltinMSVaList() const
Returns whether or not type __builtin_ms_va_list type is available on this target.
Definition: TargetInfo.h:768
unsigned getLongAccumIBits() const
Definition: TargetInfo.h:451
unsigned char LargeArrayMinWidth
Definition: TargetInfo.h:62
The basic abstraction for the target C++ ABI.
Definition: TargetCXXABI.h:23
unsigned getBoolWidth() const
Return the size of &#39;_Bool&#39; and C++ &#39;bool&#39; for this target, in bits.
Definition: TargetInfo.h:375
unsigned getLongWidth() const
getLongWidth/Align - Return the size of &#39;signed long&#39; and &#39;unsigned long&#39; for this target...
Definition: TargetInfo.h:398
OpenCL supported extensions and optional core features.
Definition: OpenCLOptions.h:23
unsigned getSuitableAlign() const
Return the alignment that is suitable for storing any object with a fundamental alignment requirement...
Definition: TargetInfo.h:535
DominatorTree GraphTraits specialization so the DominatorTree can be iterable by generic graph iterat...
Definition: Dominators.h:29
bool isBigEndian() const
Definition: TargetInfo.h:1230
virtual unsigned getVtblPtrAddressSpace() const
Definition: TargetInfo.h:1327
unsigned getMaxVectorAlign() const
Return the maximum vector alignment supported for the given target.
Definition: TargetInfo.h:632
unsigned getLargeArrayAlign() const
Definition: TargetInfo.h:610
unsigned getFloat128Align() const
Definition: TargetInfo.h:595
const llvm::Triple & getTriple() const
Returns the target triple of the primary target.
Definition: TargetInfo.h:966
__builtin_va_list as defined by the PNaCl ABI: http://www.chromium.org/nativeclient/pnacl/bitcode-abi...
Definition: TargetInfo.h:236
unsigned getLongAlign() const
Definition: TargetInfo.h:399
virtual bool isValidFeatureName(StringRef Feature) const
Determine whether this TargetInfo supports the given feature.
Definition: TargetInfo.h:1077
virtual void setMaxAtomicWidth()
Set the maximum inline or promote width lock-free atomic operation for the given target.
Definition: TargetInfo.h:620
unsigned getDefaultAlignForAttributeAligned() const
Return the default alignment for attribute((aligned)) on this target, to be used if no alignment valu...
Definition: TargetInfo.h:539
unsigned getFractWidth() const
getFractWidth/Align - Return the size of &#39;signed _Fract&#39; and &#39;unsigned _Fract&#39; for this target...
Definition: TargetInfo.h:428
unsigned getAccumIBits() const
Definition: TargetInfo.h:446
__builtin_va_list as defined by the x86-64 ABI: http://refspecs.linuxbase.org/elf/x86_64-abi-0.21.pdf
Definition: TargetInfo.h:245
unsigned getCharWidth() const
Definition: TargetInfo.h:380
virtual CallingConvCheckResult checkCallingConvention(CallingConv CC) const
Determines whether a given calling convention is valid for the target.
Definition: TargetInfo.h:1258
unsigned short SimdDefaultAlign
Definition: TargetInfo.h:178
unsigned getLargeArrayMinWidth() const
Definition: TargetInfo.h:609
llvm::SmallSet< int, 4 > ImmSet
Definition: TargetInfo.h:821
virtual void adjustTargetOptions(const CodeGenOptions &CGOpts, TargetOptions &TargetOpts) const
Adjust target options based on codegen options.
Definition: TargetInfo.h:1020
unsigned getShortAccumIBits() const
Definition: TargetInfo.h:439
void setRequiresImmediate(int Min, int Max)
Definition: TargetInfo.h:871
LangAS getLangASFromTargetAS(unsigned TargetAS)
Definition: AddressSpaces.h:66
const char *const Register
Definition: TargetInfo.h:977
Options for controlling the target.
Definition: TargetOptions.h:26
unsigned getCharAlign() const
Definition: TargetInfo.h:381
unsigned getWCharAlign() const
Definition: TargetInfo.h:557
const llvm::fltSemantics & getHalfFormat() const
Definition: TargetInfo.h:572
unsigned UseSignedCharForObjCBool
Whether Objective-C&#39;s built-in boolean type should be signed char.
Definition: TargetInfo.h:134
LangAS
Defines the address space values used by the address space qualifier of QualType. ...
Definition: AddressSpaces.h:25
__builtin_va_list as defined by the AArch64 ABI http://infocenter.arm.com/help/topic/com.arm.doc.ihi0055a/IHI0055A_aapcs64.pdf
Definition: TargetInfo.h:232
virtual bool isCLZForZeroUndef() const
The __builtin_clz* and __builtin_ctz* built-in functions are specified to have undefined results for ...
Definition: TargetInfo.h:760
bool supportsIFunc() const
Identify whether this target supports IFuncs.
Definition: TargetInfo.h:1110
virtual void setFeatureEnabled(llvm::StringMap< bool > &Features, StringRef Name, bool Enabled) const
Enable or disable a specific target feature; the feature name must be valid.
Definition: TargetInfo.h:1070
unsigned getAccumAlign() const
Definition: TargetInfo.h:414
unsigned getZeroLengthBitfieldBoundary() const
Get the fixed alignment value in bits for a member that follows a zero length bitfield.
Definition: TargetInfo.h:685
unsigned getLongDoubleAlign() const
Definition: TargetInfo.h:587
uint64_t getPointerWidth(unsigned AddrSpace) const
Return the width of pointers on this target, for the specified address space.
Definition: TargetInfo.h:358
TargetCXXABI getCXXABI() const
Get the C++ ABI currently in use.
Definition: TargetInfo.h:1035
unsigned getIntAlign() const
Definition: TargetInfo.h:394
IntType getUnsignedPtrDiffType(unsigned AddrSpace) const
Definition: TargetInfo.h:290
unsigned getChar32Width() const
getChar32Width/Align - Return the size of &#39;char32_t&#39; for this target, in bits.
Definition: TargetInfo.h:566
virtual bool validateConstraintModifier(StringRef, char, unsigned, std::string &) const
Definition: TargetInfo.h:932
IntType getChar32Type() const
Definition: TargetInfo.h:300
const char * MCountName
Definition: TargetInfo.h:180
const std::string & getName() const
Definition: TargetInfo.h:834
bool supportsMultiVersioning() const
Identify whether this target supports multiversioning of functions, which requires support for cpu_su...
Definition: TargetInfo.h:1104
virtual bool useFloat128ManglingForLongDouble() const
Return true if the &#39;long double&#39; type should be mangled like __float128.
Definition: TargetInfo.h:602
unsigned getNewAlign() const
Return the largest alignment for which a suitably-sized allocation with &#39;::operator new(size_t)&#39; is g...
Definition: TargetInfo.h:550
IntType getSizeType() const
Definition: TargetInfo.h:268
unsigned getUnsignedLongAccumIBits() const
Definition: TargetInfo.h:481
bool hasNoAsmVariants() const
Return true if {|} are normal characters in the asm string.
Definition: TargetInfo.h:1183
Keeps track of the various options that can be enabled, which controls the dialect of C or C++ that i...
Definition: LangOptions.h:49
virtual void setOpenCLExtensionOpts()
Set supported OpenCL extensions as written on command line.
Definition: TargetInfo.h:1296
unsigned getMaxAtomicPromoteWidth() const
Return the maximum width lock-free atomic operation which will ever be supported for the given target...
Definition: TargetInfo.h:614
virtual bool hasLegalHalfType() const
Determine whether _Float16 is supported on this target.
Definition: TargetInfo.h:525
virtual StringRef getABI() const
Get the ABI currently in use.
Definition: TargetInfo.h:1032
virtual std::string isValidSectionSpecifier(StringRef SR) const
An optional hook that targets can implement to perform semantic checking on attribute((section("foo")...
Definition: TargetInfo.h:1008
unsigned char MaxAtomicPromoteWidth
Definition: TargetInfo.h:177
bool hasMatchingInput() const
Return true if this output operand has a matching (tied) input operand.
Definition: TargetInfo.h:842
const LangASMap & getAddressSpaceMap() const
Definition: TargetInfo.h:1200
unsigned char SSERegParmMax
Definition: TargetInfo.h:181
virtual bool hasBuiltinAtomic(uint64_t AtomicSizeInBits, uint64_t AlignmentInBits) const
Returns true if the given target supports lock-free atomic operations at the specified width and alig...
Definition: TargetInfo.h:623
virtual bool validateTarget(DiagnosticsEngine &Diags) const
Check the target is valid after it is fully initialized.
Definition: TargetInfo.h:1348
Forward-declares and imports various common LLVM datatypes that clang wants to use unqualified...
Concrete class used by the front-end to report problems and issues.
Definition: Diagnostic.h:148
virtual StringRef getConstraintRegister(StringRef Constraint, StringRef Expression) const
Extracts a register from the passed constraint (if it is a single-register constraint) and the asm la...
Definition: TargetInfo.h:799
unsigned getShortAccumScale() const
getShortAccumScale/IBits - Return the number of fractional/integral bits in a &#39;signed short _Accum&#39; t...
Definition: TargetInfo.h:438
unsigned getShortWidth() const
Return the size of &#39;signed short&#39; and &#39;unsigned short&#39; for this target, in bits.
Definition: TargetInfo.h:385
unsigned getChar16Align() const
Definition: TargetInfo.h:562
unsigned getFractAlign() const
Definition: TargetInfo.h:429
VersionTuple PlatformMinVersion
Definition: TargetInfo.h:186
virtual unsigned getRegisterWidth() const
Return the "preferred" register width on this target.
Definition: TargetInfo.h:647
bool useZeroLengthBitfieldAlignment() const
Check whether zero length bitfields should force alignment of the next member.
Definition: TargetInfo.h:679
unsigned ComplexLongDoubleUsesFP2Ret
Definition: TargetInfo.h:190
unsigned getLongLongAlign() const
Definition: TargetInfo.h:404
unsigned UseZeroLengthBitfieldAlignment
Whether zero length bitfields (e.g., int : 0;) force alignment of the next bitfield.
Definition: TargetInfo.h:149
bool isSEHTrySupported() const
Whether the target supports SEH __try.
Definition: TargetInfo.h:1170
unsigned RealTypeUsesObjCFPRet
Definition: TargetInfo.h:189
bool isLittleEndian() const
Definition: TargetInfo.h:1231
unsigned getAccumScale() const
getAccumScale/IBits - Return the number of fractional/integral bits in a &#39;signed _Accum&#39; type...
Definition: TargetInfo.h:445
Provides definitions for the various language-specific address spaces.
unsigned getLongAccumScale() const
getLongAccumScale/IBits - Return the number of fractional/integral bits in a &#39;signed long _Accum&#39; typ...
Definition: TargetInfo.h:450
return Out str()
unsigned getMinGlobalAlign() const
getMinGlobalAlign - Return the minimum alignment of a global variable, unless its alignment is explic...
Definition: TargetInfo.h:545
StringRef PlatformName
Definition: TargetInfo.h:185
bool useExplicitBitFieldAlignment() const
Check whether explicit bitfield alignment attributes should be.
Definition: TargetInfo.h:691
const llvm::fltSemantics & getDoubleFormat() const
Definition: TargetInfo.h:582
unsigned char DefaultAlignForAttributeAligned
Definition: TargetInfo.h:93
const llvm::fltSemantics & getLongDoubleFormat() const
Definition: TargetInfo.h:588
typedef void* __builtin_va_list;
Definition: TargetInfo.h:228
unsigned HasBuiltinMSVaList
Definition: TargetInfo.h:192
void setRequiresImmediate(int Exact)
Definition: TargetInfo.h:882
Exposes information about the current target.
Definition: TargetInfo.h:161
Defines the TargetCXXABI class, which abstracts details of the C++ ABI that we&#39;re targeting...
unsigned HasAlignMac68kSupport
Definition: TargetInfo.h:188
const char * getTypeName(ID Id)
getTypeName - Return the name of the type for Id.
Definition: Types.cpp:38
unsigned getShortFractAlign() const
Definition: TargetInfo.h:424
virtual bool hasProtectedVisibility() const
Does this target support "protected" visibility?
Definition: TargetInfo.h:995
IntType getSignedSizeType() const
Definition: TargetInfo.h:269
IntType getUIntPtrType() const
Definition: TargetInfo.h:294
unsigned getIntWidth() const
getIntWidth/Align - Return the size of &#39;signed int&#39; and &#39;unsigned int&#39; for this target, in bits.
Definition: TargetInfo.h:393
bool useObjCFPRetForRealType(RealType T) const
Check whether the given real type should use the "fpret" flavor of Objective-C message passing on thi...
Definition: TargetInfo.h:718
virtual bool hasSjLjLowering() const
Controls if __builtin_longjmp / __builtin_setjmp can be lowered to llvm.eh.sjlj.longjmp / llvm...
Definition: TargetInfo.h:1277
unsigned UseBitFieldTypeAlignment
Control whether the alignment of bit-field types is respected when laying out structures.
Definition: TargetInfo.h:141
unsigned getShortAccumWidth() const
getShortAccumWidth/Align - Return the size of &#39;signed short _Accum&#39; and &#39;unsigned short _Accum&#39; for t...
Definition: TargetInfo.h:408
unsigned getAccumWidth() const
getAccumWidth/Align - Return the size of &#39;signed _Accum&#39; and &#39;unsigned _Accum&#39; for this target...
Definition: TargetInfo.h:413
unsigned getLongAccumWidth() const
getLongAccumWidth/Align - Return the size of &#39;signed long _Accum&#39; and &#39;unsigned long _Accum&#39; for this...
Definition: TargetInfo.h:418
unsigned short getMaxTLSAlign() const
Return the maximum alignment (in bits) of a TLS variable.
Definition: TargetInfo.h:1162
IntType getChar16Type() const
Definition: TargetInfo.h:299
virtual void fillValidCPUList(SmallVectorImpl< StringRef > &Values) const
Fill a SmallVectorImpl with the valid values to setCPU.
Definition: TargetInfo.h:1047
virtual bool handleTargetFeatures(std::vector< std::string > &Features, DiagnosticsEngine &Diags)
Perform initialization based on the user configured set of features (e.g., +sse4).
Definition: TargetInfo.h:1092
virtual bool validateCpuSupports(StringRef Name) const
Definition: TargetInfo.h:1114
virtual Optional< unsigned > getDWARFAddressSpace(unsigned AddressSpace) const
Definition: TargetInfo.h:1337
unsigned getShortAlign() const
Return the alignment of &#39;signed short&#39; and &#39;unsigned short&#39; for this target.
Definition: TargetInfo.h:389
virtual void getCPUSpecificCPUDispatchFeatures(StringRef Name, llvm::SmallVectorImpl< StringRef > &Features) const
Definition: TargetInfo.h:1141
virtual bool validateGlobalRegisterVariable(StringRef RegName, unsigned RegSize, bool &HasSizeMismatch) const
Validate register name used for global register variables.
Definition: TargetInfo.h:908
void resetDataLayout(StringRef DL)
Definition: TargetInfo.h:199
bool hasAlignMac68kSupport() const
Check whether this target support &#39;#pragma options align=mac68k&#39;.
Definition: TargetInfo.h:696
unsigned getDoubleAlign() const
Definition: TargetInfo.h:581
bool useAddressSpaceMapMangling() const
Specify if mangling based on address space map should be used or not for language specific address sp...
Definition: TargetInfo.h:738
IntType getUIntMaxType() const
Definition: TargetInfo.h:284
unsigned getDoubleWidth() const
getDoubleWidth/Align/Format - Return the size/align/format of &#39;double&#39;.
Definition: TargetInfo.h:580
CallingConv
CallingConv - Specifies the calling convention that a function uses.
Definition: Specifiers.h:235
const llvm::fltSemantics * LongDoubleFormat
Definition: TargetInfo.h:100
virtual bool allowsLargerPreferedTypeAlignment() const
Whether target allows to overalign ABI-specified preferred alignment.
Definition: TargetInfo.h:1290
unsigned getWCharWidth() const
getWCharWidth/Align - Return the size of &#39;wchar_t&#39; for this target, in bits.
Definition: TargetInfo.h:556
unsigned getLongAccumAlign() const
Definition: TargetInfo.h:419
virtual bool useFP16ConversionIntrinsics() const
Check whether llvm intrinsics such as llvm.convert.to.fp16 should be used to convert to and from __fp...
Definition: TargetInfo.h:732
const llvm::VersionTuple & getSDKVersion() const
Definition: TargetInfo.h:1343
virtual uint64_t getPointerAlignV(unsigned AddrSpace) const
Definition: TargetInfo.h:1360
IntType getPtrDiffType(unsigned AddrSpace) const
Definition: TargetInfo.h:287
unsigned getIntMaxTWidth() const
Return the size of intmax_t and uintmax_t for this target, in bits.
Definition: TargetInfo.h:639
IntType getSigAtomicType() const
Definition: TargetInfo.h:305
virtual bool setABI(const std::string &Name)
Use the specified ABI.
Definition: TargetInfo.h:1057
virtual bool isNan2008() const
Returns true if NaN encoding is IEEE 754-2008.
Definition: TargetInfo.h:961
StringRef getPlatformName() const
Retrieve the name of the platform as it is used in the availability attribute.
Definition: TargetInfo.h:1224
const LangASMap * AddrSpaceMap
Definition: TargetInfo.h:183
unsigned getMaxAtomicInlineWidth() const
Return the maximum width lock-free atomic operation which can be inlined given the supported features...
Definition: TargetInfo.h:617
unsigned getShortAccumAlign() const
Definition: TargetInfo.h:409
IntType getWIntType() const
Definition: TargetInfo.h:298
unsigned IsRenderScriptTarget
Definition: TargetInfo.h:194
virtual int getEHDataRegisterNumber(unsigned RegNo) const
Return the register number that __builtin_eh_return_regno would return with the specified argument...
Definition: TargetInfo.h:1191
unsigned UseExplicitBitFieldAlignment
Whether explicit bit field alignment attributes are honored.
Definition: TargetInfo.h:152
unsigned getChar16Width() const
getChar16Width/Align - Return the size of &#39;char16_t&#39; for this target, in bits.
Definition: TargetInfo.h:561
unsigned getLongLongWidth() const
getLongLongWidth/Align - Return the size of &#39;signed long long&#39; and &#39;unsigned long long&#39; for this targ...
Definition: TargetInfo.h:403
virtual LangAS getOpenCLBuiltinAddressSpace(unsigned AS) const
Map from the address space field in builtin description strings to the language address space...
Definition: TargetInfo.h:1204
unsigned getUnsignedAccumScale() const
getUnsignedAccumScale/IBits - Return the number of fractional/integral bits in a &#39;unsigned _Accum&#39; ty...
Definition: TargetInfo.h:468
IntType getIntMaxType() const
Definition: TargetInfo.h:283
unsigned getFloat128Width() const
getFloat128Width/Align/Format - Return the size/align/format of &#39;__float128&#39;.
Definition: TargetInfo.h:594
Defines the clang::TargetOptions class.
unsigned getHalfAlign() const
Definition: TargetInfo.h:571
virtual uint64_t getPointerWidthV(unsigned AddrSpace) const
Definition: TargetInfo.h:1357
const llvm::DataLayout & getDataLayout() const
Definition: TargetInfo.h:970
virtual ArrayRef< AddlRegName > getGCCAddlRegNames() const
Definition: TargetInfo.h:1368
virtual unsigned getFloatEvalMethod() const
Return the value for the C99 FLT_EVAL_METHOD macro.
Definition: TargetInfo.h:605
__builtin_va_list as defined by the Power ABI: https://www.power.org /resources/downloads/Power-Arch-...
Definition: TargetInfo.h:241
bool useObjCFP2RetForComplexLongDouble() const
Check whether _Complex long double should use the "fp2ret" flavor of Objective-C message passing on t...
Definition: TargetInfo.h:724
bool useBitFieldTypeAlignment() const
Check whether the alignment of bit-field types is respected when laying out structures.
Definition: TargetInfo.h:673
IntType getUInt64Type() const
Definition: TargetInfo.h:302
virtual bool validateCpuIs(StringRef Name) const
Definition: TargetInfo.h:1124
unsigned getUnsignedAccumIBits() const
Definition: TargetInfo.h:471
bool isVLASupported() const
Whether target supports variable-length arrays.
Definition: TargetInfo.h:1167
bool isValidAsmImmediate(const llvm::APInt &Value) const
Definition: TargetInfo.h:858
unsigned getLongDoubleWidth() const
getLongDoubleWidth/Align/Format - Return the size/align/format of &#39;long double&#39;.
Definition: TargetInfo.h:586
__builtin_va_list as defined by ARM AAPCS ABI http://infocenter.arm.com
Definition: TargetInfo.h:250
unsigned getUnsignedLongAccumScale() const
getUnsignedLongAccumScale/IBits - Return the number of fractional/integral bits in a &#39;unsigned long _...
Definition: TargetInfo.h:478
IntType
===-— Target Data Type Query Methods ----------------------------—===//
Definition: TargetInfo.h:104
Defines various enumerations that describe declaration and type specifiers.
const llvm::fltSemantics & getFloat128Format() const
Definition: TargetInfo.h:596
unsigned getUnsignedShortAccumIBits() const
Definition: TargetInfo.h:460
Dataflow Directional Tag Classes.
unsigned ZeroLengthBitfieldBoundary
If non-zero, specifies a fixed alignment value for bitfields that follow zero length bitfield...
Definition: TargetInfo.h:156
virtual char CPUSpecificManglingCharacter(StringRef Name) const
Definition: TargetInfo.h:1133
ConstraintInfo(StringRef ConstraintStr, StringRef Name)
Definition: TargetInfo.h:826
unsigned[(unsigned) LangAS::FirstTargetAddressSpace] LangASMap
The type of a lookup table which maps from language-specific address spaces to target-specific ones...
Definition: AddressSpaces.h:53
unsigned getLongFractScale() const
getLongFractScale - Return the number of fractional bits in a &#39;signed long _Fract&#39; type...
Definition: TargetInfo.h:497
unsigned getUnsignedFractScale() const
getUnsignedFractScale - Return the number of fractional bits in a &#39;unsigned _Fract&#39; type...
Definition: TargetInfo.h:508
bool hasTiedOperand() const
Return true if this input operand is a matching constraint that ties it to an output operand...
Definition: TargetInfo.h:849
virtual bool hasFloat16Type() const
Determine whether the _Float16 type is supported on this target.
Definition: TargetInfo.h:531
Fields controlling how types are laid out in memory; these may need to be copied for targets like AMD...
Definition: TargetInfo.h:54
unsigned getShortFractWidth() const
getShortFractWidth/Align - Return the size of &#39;signed short _Fract&#39; and &#39;unsigned short _Fract&#39; for t...
Definition: TargetInfo.h:423
virtual bool hasFeature(StringRef Feature) const
Determine whether the given target has the given feature.
Definition: TargetInfo.h:1098
const std::string & getConstraintStr() const
Definition: TargetInfo.h:833
unsigned getUnsignedShortAccumScale() const
getUnsignedShortAccumScale/IBits - Return the number of fractional/integral bits in a &#39;unsigned short...
Definition: TargetInfo.h:457
unsigned getLongFractWidth() const
getLongFractWidth/Align - Return the size of &#39;signed long _Fract&#39; and &#39;unsigned long _Fract&#39; for this...
Definition: TargetInfo.h:433
virtual llvm::Optional< LangAS > getConstantAddressSpace() const
Return an AST address space which can be used opportunistically for constant global memory...
Definition: TargetInfo.h:1218
bool doUnsignedFixedPointTypesHavePadding() const
In the event this target uses the same number of fractional bits for its unsigned types as it does wi...
Definition: TargetInfo.h:329
bool useSignedCharForObjCBool() const
Check if the Objective-C built-in boolean type should be signed char.
Definition: TargetInfo.h:664
virtual unsigned multiVersionSortPriority(StringRef Name) const
Definition: TargetInfo.h:1118
unsigned getBoolAlign() const
Return the alignment of &#39;_Bool&#39; and C++ &#39;bool&#39; for this target.
Definition: TargetInfo.h:378
virtual const char * getStaticInitSectionSpecifier() const
Return the section to use for C++ static initialization functions.
Definition: TargetInfo.h:1196
CodeGenOptions - Track various options which control how the code is optimized and passed to the back...
virtual bool isValidCPUName(StringRef Name) const
brief Determine whether this TargetInfo supports the given CPU name.
Definition: TargetInfo.h:1050
virtual uint64_t getMaxPointerWidth() const
Return the maximum width of pointers on this target.
Definition: TargetInfo.h:366
unsigned getShortFractScale() const
getShortFractScale - Return the number of fractional bits in a &#39;signed short _Fract&#39; type...
Definition: TargetInfo.h:489
virtual bool hasFloat128Type() const
Determine whether the __float128 type is supported on this target.
Definition: TargetInfo.h:528
void setRequiresImmediate(llvm::ArrayRef< int > Exacts)
Definition: TargetInfo.h:877
BuiltinVaListKind
The different kinds of __builtin_va_list types defined by the target implementation.
Definition: TargetInfo.h:223
virtual bool hasInt128Type() const
Determine whether the __int128 type is supported on this target.
Definition: TargetInfo.h:520
virtual CallingConv getDefaultCallingConv(CallingConvMethodType MT) const
Gets the default calling convention for the given target and declaration context. ...
Definition: TargetInfo.h:1241
unsigned getUnsignedLongFractScale() const
getUnsignedLongFractScale - Return the number of fractional bits in a &#39;unsigned long _Fract&#39; type...
Definition: TargetInfo.h:514
static IntType getCorrespondingUnsignedType(IntType T)
Definition: TargetInfo.h:308
unsigned getFloatAlign() const
Definition: TargetInfo.h:576
virtual bool setCPU(const std::string &Name)
Target the specified CPU.
Definition: TargetInfo.h:1042
virtual bool validateOutputSize(StringRef, unsigned) const
Definition: TargetInfo.h:922
unsigned getFractScale() const
getFractScale - Return the number of fractional bits in a &#39;signed _Fract&#39; type.
Definition: TargetInfo.h:493
const llvm::fltSemantics & getFloatFormat() const
Definition: TargetInfo.h:577
bool isRenderScriptTarget() const
Returns true for RenderScript.
Definition: TargetInfo.h:771
unsigned getUnsignedShortFractScale() const
getUnsignedShortFractScale - Return the number of fractional bits in a &#39;unsigned short _Fract&#39; type...
Definition: TargetInfo.h:501
bool isTLSSupported() const
Whether the target supports thread-local storage.
Definition: TargetInfo.h:1154
IntType getWCharType() const
Definition: TargetInfo.h:297
static unsigned getCharWidth(tok::TokenKind kind, const TargetInfo &Target)
virtual LangAS getCUDABuiltinAddressSpace(unsigned AS) const
Map from the address space field in builtin description strings to the language address space...
Definition: TargetInfo.h:1210
TargetCXXABI TheCXXABI
Definition: TargetInfo.h:182
uint64_t getPointerAlign(unsigned AddrSpace) const
Definition: TargetInfo.h:361
unsigned getSimdDefaultAlign() const
Return default simd alignment for the given target.
Definition: TargetInfo.h:636
__DEVICE__ int max(int __a, int __b)
virtual void setSupportedOpenCLOpts()
Set supported OpenCL extensions and optional core features.
Definition: TargetInfo.h:1293
IntType getIntPtrType() const
Definition: TargetInfo.h:293
virtual void setAuxTarget(const TargetInfo *Aux)
Definition: TargetInfo.h:1352
void setTiedOperand(unsigned N, ConstraintInfo &Output)
Indicate that this is an input operand that is tied to the specified output operand.
Definition: TargetInfo.h:894
virtual bool validateInputSize(StringRef, unsigned) const
Definition: TargetInfo.h:927
unsigned getChar32Align() const
Definition: TargetInfo.h:567
const OpenCLOptions & getSupportedOpenCLOpts() const
Get const supported OpenCL extensions and optional core features.
Definition: TargetInfo.h:1308
virtual bool setFPMath(StringRef Name)
Use the specified unit for FP math.
Definition: TargetInfo.h:1064
virtual uint64_t getNullPointerValue(LangAS AddrSpace) const
Get integer value for null pointer.
Definition: TargetInfo.h:372
IntType getProcessIDType() const
Definition: TargetInfo.h:306
std::unique_ptr< llvm::DataLayout > DataLayout
Definition: TargetInfo.h:179
OpenCLOptions & getSupportedOpenCLOpts()
Get supported OpenCL extensions and optional core features.
Definition: TargetInfo.h:1303
const char * getMCountName() const
Returns the name of the mcount instrumentation function.
Definition: TargetInfo.h:655
void noSignedCharForObjCBool()
Definition: TargetInfo.h:667
virtual std::string convertConstraint(const char *&Constraint) const
Definition: TargetInfo.h:949
bool UseAddrSpaceMapMangling
Specify if mangling based on address space map should be used or not for language specific address sp...
Definition: TargetInfo.h:265
virtual unsigned getUnwindWordWidth() const
Definition: TargetInfo.h:644
virtual bool validateCPUSpecificCPUDispatch(StringRef Name) const
Definition: TargetInfo.h:1128
unsigned short MaxVectorAlign
Definition: TargetInfo.h:97