eb485fbc71
This patch adds the SVE built-in types defined by the Procedure Call Standard for the Arm Architecture: https://developer.arm.com/docs/100986/0000 It handles the types in all relevant places that deal with built-in types. At the moment, some of these places bail out with an error, including: (1) trying to generate LLVM IR for the types (2) trying to generate debug info for the types (3) trying to mangle the types using the Microsoft C++ ABI (4) trying to @encode the types in Objective C (1) and (2) are fixed by follow-on patches but (unlike this patch) they deal mostly with target-specific LLVM details, so seemed like a logically separate change. There is currently no spec for (3) and (4), so reporting an error seems like the correct behaviour for now. The intention is that the types will become sizeless types: http://lists.llvm.org/pipermail/cfe-dev/2019-June/062523.html The main purpose of the sizeless type extension is to diagnose impossible or dangerous uses of the types, such as any that would require sizeof to have a meaningful defined value. Until then, the patch sets the alignments of the types to the values specified in the link above. It also sets the sizes of the types to zero, which is chosen to be consistently wrong and shouldn't affect correctly-written code (i.e. code that would compile even with the sizeless type extension). The patch adds the common subset of functionality needed to test the sizeless type extension on the one hand and to provide SVE intrinsic functions on the other. After this patch, the two pieces of work are essentially independent. The patch is based on one by Graham Hunter: https://reviews.llvm.org/D59245 Differential Revision: https://reviews.llvm.org/D62960 llvm-svn: 368413
453 lines
13 KiB
C++
453 lines
13 KiB
C++
//===--- ASTCommon.cpp - Common stuff for ASTReader/ASTWriter----*- C++ -*-===//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file defines common functions that both ASTReader and ASTWriter use.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "ASTCommon.h"
|
|
#include "clang/AST/DeclCXX.h"
|
|
#include "clang/AST/DeclObjC.h"
|
|
#include "clang/Basic/IdentifierTable.h"
|
|
#include "clang/Serialization/ASTDeserializationListener.h"
|
|
#include "llvm/Support/DJB.h"
|
|
|
|
using namespace clang;
|
|
|
|
// Give ASTDeserializationListener's VTable a home.
|
|
ASTDeserializationListener::~ASTDeserializationListener() { }
|
|
|
|
serialization::TypeIdx
|
|
serialization::TypeIdxFromBuiltin(const BuiltinType *BT) {
|
|
unsigned ID = 0;
|
|
switch (BT->getKind()) {
|
|
case BuiltinType::Void:
|
|
ID = PREDEF_TYPE_VOID_ID;
|
|
break;
|
|
case BuiltinType::Bool:
|
|
ID = PREDEF_TYPE_BOOL_ID;
|
|
break;
|
|
case BuiltinType::Char_U:
|
|
ID = PREDEF_TYPE_CHAR_U_ID;
|
|
break;
|
|
case BuiltinType::UChar:
|
|
ID = PREDEF_TYPE_UCHAR_ID;
|
|
break;
|
|
case BuiltinType::UShort:
|
|
ID = PREDEF_TYPE_USHORT_ID;
|
|
break;
|
|
case BuiltinType::UInt:
|
|
ID = PREDEF_TYPE_UINT_ID;
|
|
break;
|
|
case BuiltinType::ULong:
|
|
ID = PREDEF_TYPE_ULONG_ID;
|
|
break;
|
|
case BuiltinType::ULongLong:
|
|
ID = PREDEF_TYPE_ULONGLONG_ID;
|
|
break;
|
|
case BuiltinType::UInt128:
|
|
ID = PREDEF_TYPE_UINT128_ID;
|
|
break;
|
|
case BuiltinType::Char_S:
|
|
ID = PREDEF_TYPE_CHAR_S_ID;
|
|
break;
|
|
case BuiltinType::SChar:
|
|
ID = PREDEF_TYPE_SCHAR_ID;
|
|
break;
|
|
case BuiltinType::WChar_S:
|
|
case BuiltinType::WChar_U:
|
|
ID = PREDEF_TYPE_WCHAR_ID;
|
|
break;
|
|
case BuiltinType::Short:
|
|
ID = PREDEF_TYPE_SHORT_ID;
|
|
break;
|
|
case BuiltinType::Int:
|
|
ID = PREDEF_TYPE_INT_ID;
|
|
break;
|
|
case BuiltinType::Long:
|
|
ID = PREDEF_TYPE_LONG_ID;
|
|
break;
|
|
case BuiltinType::LongLong:
|
|
ID = PREDEF_TYPE_LONGLONG_ID;
|
|
break;
|
|
case BuiltinType::Int128:
|
|
ID = PREDEF_TYPE_INT128_ID;
|
|
break;
|
|
case BuiltinType::Half:
|
|
ID = PREDEF_TYPE_HALF_ID;
|
|
break;
|
|
case BuiltinType::Float:
|
|
ID = PREDEF_TYPE_FLOAT_ID;
|
|
break;
|
|
case BuiltinType::Double:
|
|
ID = PREDEF_TYPE_DOUBLE_ID;
|
|
break;
|
|
case BuiltinType::LongDouble:
|
|
ID = PREDEF_TYPE_LONGDOUBLE_ID;
|
|
break;
|
|
case BuiltinType::ShortAccum:
|
|
ID = PREDEF_TYPE_SHORT_ACCUM_ID;
|
|
break;
|
|
case BuiltinType::Accum:
|
|
ID = PREDEF_TYPE_ACCUM_ID;
|
|
break;
|
|
case BuiltinType::LongAccum:
|
|
ID = PREDEF_TYPE_LONG_ACCUM_ID;
|
|
break;
|
|
case BuiltinType::UShortAccum:
|
|
ID = PREDEF_TYPE_USHORT_ACCUM_ID;
|
|
break;
|
|
case BuiltinType::UAccum:
|
|
ID = PREDEF_TYPE_UACCUM_ID;
|
|
break;
|
|
case BuiltinType::ULongAccum:
|
|
ID = PREDEF_TYPE_ULONG_ACCUM_ID;
|
|
break;
|
|
case BuiltinType::ShortFract:
|
|
ID = PREDEF_TYPE_SHORT_FRACT_ID;
|
|
break;
|
|
case BuiltinType::Fract:
|
|
ID = PREDEF_TYPE_FRACT_ID;
|
|
break;
|
|
case BuiltinType::LongFract:
|
|
ID = PREDEF_TYPE_LONG_FRACT_ID;
|
|
break;
|
|
case BuiltinType::UShortFract:
|
|
ID = PREDEF_TYPE_USHORT_FRACT_ID;
|
|
break;
|
|
case BuiltinType::UFract:
|
|
ID = PREDEF_TYPE_UFRACT_ID;
|
|
break;
|
|
case BuiltinType::ULongFract:
|
|
ID = PREDEF_TYPE_ULONG_FRACT_ID;
|
|
break;
|
|
case BuiltinType::SatShortAccum:
|
|
ID = PREDEF_TYPE_SAT_SHORT_ACCUM_ID;
|
|
break;
|
|
case BuiltinType::SatAccum:
|
|
ID = PREDEF_TYPE_SAT_ACCUM_ID;
|
|
break;
|
|
case BuiltinType::SatLongAccum:
|
|
ID = PREDEF_TYPE_SAT_LONG_ACCUM_ID;
|
|
break;
|
|
case BuiltinType::SatUShortAccum:
|
|
ID = PREDEF_TYPE_SAT_USHORT_ACCUM_ID;
|
|
break;
|
|
case BuiltinType::SatUAccum:
|
|
ID = PREDEF_TYPE_SAT_UACCUM_ID;
|
|
break;
|
|
case BuiltinType::SatULongAccum:
|
|
ID = PREDEF_TYPE_SAT_ULONG_ACCUM_ID;
|
|
break;
|
|
case BuiltinType::SatShortFract:
|
|
ID = PREDEF_TYPE_SAT_SHORT_FRACT_ID;
|
|
break;
|
|
case BuiltinType::SatFract:
|
|
ID = PREDEF_TYPE_SAT_FRACT_ID;
|
|
break;
|
|
case BuiltinType::SatLongFract:
|
|
ID = PREDEF_TYPE_SAT_LONG_FRACT_ID;
|
|
break;
|
|
case BuiltinType::SatUShortFract:
|
|
ID = PREDEF_TYPE_SAT_USHORT_FRACT_ID;
|
|
break;
|
|
case BuiltinType::SatUFract:
|
|
ID = PREDEF_TYPE_SAT_UFRACT_ID;
|
|
break;
|
|
case BuiltinType::SatULongFract:
|
|
ID = PREDEF_TYPE_SAT_ULONG_FRACT_ID;
|
|
break;
|
|
case BuiltinType::Float16:
|
|
ID = PREDEF_TYPE_FLOAT16_ID;
|
|
break;
|
|
case BuiltinType::Float128:
|
|
ID = PREDEF_TYPE_FLOAT128_ID;
|
|
break;
|
|
case BuiltinType::NullPtr:
|
|
ID = PREDEF_TYPE_NULLPTR_ID;
|
|
break;
|
|
case BuiltinType::Char8:
|
|
ID = PREDEF_TYPE_CHAR8_ID;
|
|
break;
|
|
case BuiltinType::Char16:
|
|
ID = PREDEF_TYPE_CHAR16_ID;
|
|
break;
|
|
case BuiltinType::Char32:
|
|
ID = PREDEF_TYPE_CHAR32_ID;
|
|
break;
|
|
case BuiltinType::Overload:
|
|
ID = PREDEF_TYPE_OVERLOAD_ID;
|
|
break;
|
|
case BuiltinType::BoundMember:
|
|
ID = PREDEF_TYPE_BOUND_MEMBER;
|
|
break;
|
|
case BuiltinType::PseudoObject:
|
|
ID = PREDEF_TYPE_PSEUDO_OBJECT;
|
|
break;
|
|
case BuiltinType::Dependent:
|
|
ID = PREDEF_TYPE_DEPENDENT_ID;
|
|
break;
|
|
case BuiltinType::UnknownAny:
|
|
ID = PREDEF_TYPE_UNKNOWN_ANY;
|
|
break;
|
|
case BuiltinType::ARCUnbridgedCast:
|
|
ID = PREDEF_TYPE_ARC_UNBRIDGED_CAST;
|
|
break;
|
|
case BuiltinType::ObjCId:
|
|
ID = PREDEF_TYPE_OBJC_ID;
|
|
break;
|
|
case BuiltinType::ObjCClass:
|
|
ID = PREDEF_TYPE_OBJC_CLASS;
|
|
break;
|
|
case BuiltinType::ObjCSel:
|
|
ID = PREDEF_TYPE_OBJC_SEL;
|
|
break;
|
|
#define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) \
|
|
case BuiltinType::Id: \
|
|
ID = PREDEF_TYPE_##Id##_ID; \
|
|
break;
|
|
#include "clang/Basic/OpenCLImageTypes.def"
|
|
#define EXT_OPAQUE_TYPE(ExtType, Id, Ext) \
|
|
case BuiltinType::Id: \
|
|
ID = PREDEF_TYPE_##Id##_ID; \
|
|
break;
|
|
#include "clang/Basic/OpenCLExtensionTypes.def"
|
|
case BuiltinType::OCLSampler:
|
|
ID = PREDEF_TYPE_SAMPLER_ID;
|
|
break;
|
|
case BuiltinType::OCLEvent:
|
|
ID = PREDEF_TYPE_EVENT_ID;
|
|
break;
|
|
case BuiltinType::OCLClkEvent:
|
|
ID = PREDEF_TYPE_CLK_EVENT_ID;
|
|
break;
|
|
case BuiltinType::OCLQueue:
|
|
ID = PREDEF_TYPE_QUEUE_ID;
|
|
break;
|
|
case BuiltinType::OCLReserveID:
|
|
ID = PREDEF_TYPE_RESERVE_ID_ID;
|
|
break;
|
|
#define SVE_TYPE(Name, Id, SingletonId) \
|
|
case BuiltinType::Id: \
|
|
ID = PREDEF_TYPE_##Id##_ID; \
|
|
break;
|
|
#include "clang/Basic/AArch64SVEACLETypes.def"
|
|
case BuiltinType::BuiltinFn:
|
|
ID = PREDEF_TYPE_BUILTIN_FN;
|
|
break;
|
|
case BuiltinType::OMPArraySection:
|
|
ID = PREDEF_TYPE_OMP_ARRAY_SECTION;
|
|
break;
|
|
}
|
|
|
|
return TypeIdx(ID);
|
|
}
|
|
|
|
unsigned serialization::ComputeHash(Selector Sel) {
|
|
unsigned N = Sel.getNumArgs();
|
|
if (N == 0)
|
|
++N;
|
|
unsigned R = 5381;
|
|
for (unsigned I = 0; I != N; ++I)
|
|
if (IdentifierInfo *II = Sel.getIdentifierInfoForSlot(I))
|
|
R = llvm::djbHash(II->getName(), R);
|
|
return R;
|
|
}
|
|
|
|
const DeclContext *
|
|
serialization::getDefinitiveDeclContext(const DeclContext *DC) {
|
|
switch (DC->getDeclKind()) {
|
|
// These entities may have multiple definitions.
|
|
case Decl::TranslationUnit:
|
|
case Decl::ExternCContext:
|
|
case Decl::Namespace:
|
|
case Decl::LinkageSpec:
|
|
case Decl::Export:
|
|
return nullptr;
|
|
|
|
// C/C++ tag types can only be defined in one place.
|
|
case Decl::Enum:
|
|
case Decl::Record:
|
|
if (const TagDecl *Def = cast<TagDecl>(DC)->getDefinition())
|
|
return Def;
|
|
return nullptr;
|
|
|
|
// FIXME: These can be defined in one place... except special member
|
|
// functions and out-of-line definitions.
|
|
case Decl::CXXRecord:
|
|
case Decl::ClassTemplateSpecialization:
|
|
case Decl::ClassTemplatePartialSpecialization:
|
|
return nullptr;
|
|
|
|
// Each function, method, and block declaration is its own DeclContext.
|
|
case Decl::Function:
|
|
case Decl::CXXMethod:
|
|
case Decl::CXXConstructor:
|
|
case Decl::CXXDestructor:
|
|
case Decl::CXXConversion:
|
|
case Decl::ObjCMethod:
|
|
case Decl::Block:
|
|
case Decl::Captured:
|
|
// Objective C categories, category implementations, and class
|
|
// implementations can only be defined in one place.
|
|
case Decl::ObjCCategory:
|
|
case Decl::ObjCCategoryImpl:
|
|
case Decl::ObjCImplementation:
|
|
return DC;
|
|
|
|
case Decl::ObjCProtocol:
|
|
if (const ObjCProtocolDecl *Def
|
|
= cast<ObjCProtocolDecl>(DC)->getDefinition())
|
|
return Def;
|
|
return nullptr;
|
|
|
|
// FIXME: These are defined in one place, but properties in class extensions
|
|
// end up being back-patched into the main interface. See
|
|
// Sema::HandlePropertyInClassExtension for the offending code.
|
|
case Decl::ObjCInterface:
|
|
return nullptr;
|
|
|
|
default:
|
|
llvm_unreachable("Unhandled DeclContext in AST reader");
|
|
}
|
|
|
|
llvm_unreachable("Unhandled decl kind");
|
|
}
|
|
|
|
bool serialization::isRedeclarableDeclKind(unsigned Kind) {
|
|
switch (static_cast<Decl::Kind>(Kind)) {
|
|
case Decl::TranslationUnit:
|
|
case Decl::ExternCContext:
|
|
// Special case of a "merged" declaration.
|
|
return true;
|
|
|
|
case Decl::Namespace:
|
|
case Decl::NamespaceAlias:
|
|
case Decl::Typedef:
|
|
case Decl::TypeAlias:
|
|
case Decl::Enum:
|
|
case Decl::Record:
|
|
case Decl::CXXRecord:
|
|
case Decl::ClassTemplateSpecialization:
|
|
case Decl::ClassTemplatePartialSpecialization:
|
|
case Decl::VarTemplateSpecialization:
|
|
case Decl::VarTemplatePartialSpecialization:
|
|
case Decl::Function:
|
|
case Decl::CXXDeductionGuide:
|
|
case Decl::CXXMethod:
|
|
case Decl::CXXConstructor:
|
|
case Decl::CXXDestructor:
|
|
case Decl::CXXConversion:
|
|
case Decl::UsingShadow:
|
|
case Decl::ConstructorUsingShadow:
|
|
case Decl::Var:
|
|
case Decl::FunctionTemplate:
|
|
case Decl::ClassTemplate:
|
|
case Decl::VarTemplate:
|
|
case Decl::TypeAliasTemplate:
|
|
case Decl::ObjCProtocol:
|
|
case Decl::ObjCInterface:
|
|
case Decl::Empty:
|
|
return true;
|
|
|
|
// Never redeclarable.
|
|
case Decl::UsingDirective:
|
|
case Decl::Label:
|
|
case Decl::UnresolvedUsingTypename:
|
|
case Decl::TemplateTypeParm:
|
|
case Decl::EnumConstant:
|
|
case Decl::UnresolvedUsingValue:
|
|
case Decl::IndirectField:
|
|
case Decl::Field:
|
|
case Decl::MSProperty:
|
|
case Decl::ObjCIvar:
|
|
case Decl::ObjCAtDefsField:
|
|
case Decl::NonTypeTemplateParm:
|
|
case Decl::TemplateTemplateParm:
|
|
case Decl::Using:
|
|
case Decl::UsingPack:
|
|
case Decl::ObjCMethod:
|
|
case Decl::ObjCCategory:
|
|
case Decl::ObjCCategoryImpl:
|
|
case Decl::ObjCImplementation:
|
|
case Decl::ObjCProperty:
|
|
case Decl::ObjCCompatibleAlias:
|
|
case Decl::LinkageSpec:
|
|
case Decl::Export:
|
|
case Decl::ObjCPropertyImpl:
|
|
case Decl::PragmaComment:
|
|
case Decl::PragmaDetectMismatch:
|
|
case Decl::FileScopeAsm:
|
|
case Decl::AccessSpec:
|
|
case Decl::Friend:
|
|
case Decl::FriendTemplate:
|
|
case Decl::StaticAssert:
|
|
case Decl::Block:
|
|
case Decl::Captured:
|
|
case Decl::ClassScopeFunctionSpecialization:
|
|
case Decl::Import:
|
|
case Decl::OMPThreadPrivate:
|
|
case Decl::OMPAllocate:
|
|
case Decl::OMPRequires:
|
|
case Decl::OMPCapturedExpr:
|
|
case Decl::OMPDeclareReduction:
|
|
case Decl::OMPDeclareMapper:
|
|
case Decl::BuiltinTemplate:
|
|
case Decl::Decomposition:
|
|
case Decl::Binding:
|
|
case Decl::Concept:
|
|
return false;
|
|
|
|
// These indirectly derive from Redeclarable<T> but are not actually
|
|
// redeclarable.
|
|
case Decl::ImplicitParam:
|
|
case Decl::ParmVar:
|
|
case Decl::ObjCTypeParam:
|
|
return false;
|
|
}
|
|
|
|
llvm_unreachable("Unhandled declaration kind");
|
|
}
|
|
|
|
bool serialization::needsAnonymousDeclarationNumber(const NamedDecl *D) {
|
|
// Friend declarations in dependent contexts aren't anonymous in the usual
|
|
// sense, but they cannot be found by name lookup in their semantic context
|
|
// (or indeed in any context), so we treat them as anonymous.
|
|
//
|
|
// This doesn't apply to friend tag decls; Sema makes those available to name
|
|
// lookup in the surrounding context.
|
|
if (D->getFriendObjectKind() &&
|
|
D->getLexicalDeclContext()->isDependentContext() && !isa<TagDecl>(D)) {
|
|
// For function templates and class templates, the template is numbered and
|
|
// not its pattern.
|
|
if (auto *FD = dyn_cast<FunctionDecl>(D))
|
|
return !FD->getDescribedFunctionTemplate();
|
|
if (auto *RD = dyn_cast<CXXRecordDecl>(D))
|
|
return !RD->getDescribedClassTemplate();
|
|
return true;
|
|
}
|
|
|
|
// At block scope, we number everything that we need to deduplicate, since we
|
|
// can't just use name matching to keep things lined up.
|
|
// FIXME: This is only necessary for an inline function or a template or
|
|
// similar.
|
|
if (D->getLexicalDeclContext()->isFunctionOrMethod()) {
|
|
if (auto *VD = dyn_cast<VarDecl>(D))
|
|
return VD->isStaticLocal();
|
|
// FIXME: What about CapturedDecls (and declarations nested within them)?
|
|
return isa<TagDecl>(D) || isa<BlockDecl>(D);
|
|
}
|
|
|
|
// Otherwise, we only care about anonymous class members / block-scope decls.
|
|
// FIXME: We need to handle lambdas and blocks within inline / templated
|
|
// variables too.
|
|
if (D->getDeclName() || !isa<CXXRecordDecl>(D->getLexicalDeclContext()))
|
|
return false;
|
|
return isa<TagDecl>(D) || isa<FieldDecl>(D);
|
|
}
|