[clang] [clang-tools-extra] Revert "[clang] Unify `SourceLocation` and `IdentifierInfo*` pair-like data structures to `IdentifierLoc`" (PR #135974)

via cfe-commits cfe-commits at lists.llvm.org
Wed Apr 16 08:06:32 PDT 2025


llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-clang

Author: Michael Buch (Michael137)

<details>
<summary>Changes</summary>

Reverts llvm/llvm-project#<!-- -->135808

Example from the LLDB macOS CI: https://green.lab.llvm.org/job/llvm.org/view/LLDB/job/as-lldb-cmake/24084/execution/node/54/log/?consoleFull
```
/Users/ec2-user/jenkins/workspace/llvm.org/as-lldb-cmake/llvm-project/lldb/source/Plugins/ExpressionParser/Clang/ClangModulesDeclVendor.cpp:360:49: error: no viable conversion from 'std::pair<clang::IdentifierInfo *, clang::SourceLocation>' to 'clang::ModuleIdPath' (aka 'ArrayRef<IdentifierLoc>')
  clang::Module *top_level_module = DoGetModule(clang_path.front(), false);
                                                ^~~~~~~~~~~~~~~~~~
/Users/ec2-user/jenkins/workspace/llvm.org/as-lldb-cmake/llvm-project/llvm/include/llvm/ADT/ArrayRef.h:41:40: note: candidate constructor (the implicit copy constructor) not viable: no known conversion from 'std::pair<clang::IdentifierInfo *, clang::SourceLocation>' to 'const llvm::ArrayRef<clang::IdentifierLoc> &' for 1st argument
  class LLVM_GSL_POINTER [[nodiscard]] ArrayRef {
                                       ^
/Users/ec2-user/jenkins/workspace/llvm.org/as-lldb-cmake/llvm-project/llvm/include/llvm/ADT/ArrayRef.h:41:40: note: candidate constructor (the implicit move constructor) not viable: no known conversion from 'std::pair<clang::IdentifierInfo *, clang::SourceLocation>' to 'llvm::ArrayRef<clang::IdentifierLoc> &&' for 1st argument
/Users/ec2-user/jenkins/workspace/llvm.org/as-lldb-cmake/llvm-project/llvm/include/llvm/ADT/ArrayRef.h:70:18: note: candidate constructor not viable: no known conversion from 'std::pair<clang::IdentifierInfo *, clang::SourceLocation>' to 'std::nullopt_t' for 1st argument
    /*implicit*/ ArrayRef(std::nullopt_t) {}
```

---

Patch is 107.85 KiB, truncated to 20.00 KiB below, full version: https://github.com/llvm/llvm-project/pull/135974.diff


45 Files Affected:

- (modified) clang-tools-extra/pp-trace/PPCallbacksTracker.cpp (+2-2) 
- (modified) clang/include/clang/AST/OpenACCClause.h (+10-10) 
- (modified) clang/include/clang/Basic/IdentifierTable.h (+3-23) 
- (modified) clang/include/clang/Lex/ModuleLoader.h (+1-2) 
- (modified) clang/include/clang/Lex/PPCallbacks.h (-1) 
- (modified) clang/include/clang/Lex/Preprocessor.h (+5-4) 
- (modified) clang/include/clang/Parse/LoopHint.h (+1-1) 
- (modified) clang/include/clang/Parse/Parser.h (+8-5) 
- (modified) clang/include/clang/Sema/ParsedAttr.h (+10) 
- (modified) clang/include/clang/Sema/Sema.h (+1-1) 
- (modified) clang/include/clang/Sema/SemaCodeCompletion.h (+2-1) 
- (modified) clang/include/clang/Sema/SemaObjC.h (+2-2) 
- (modified) clang/include/clang/Sema/SemaOpenACC.h (+1-1) 
- (modified) clang/lib/AST/OpenACCClause.cpp (+2-2) 
- (modified) clang/lib/AST/TextNodeDumper.cpp (+2-2) 
- (modified) clang/lib/Frontend/CompilerInstance.cpp (+25-28) 
- (modified) clang/lib/Frontend/FrontendActions.cpp (+2-2) 
- (modified) clang/lib/Lex/PPDirectives.cpp (+11-11) 
- (modified) clang/lib/Lex/PPLexerChange.cpp (+3-3) 
- (modified) clang/lib/Lex/Pragma.cpp (+38-35) 
- (modified) clang/lib/Lex/Preprocessor.cpp (+8-8) 
- (modified) clang/lib/Parse/ParseDecl.cpp (+14-14) 
- (modified) clang/lib/Parse/ParseExpr.cpp (+3-4) 
- (modified) clang/lib/Parse/ParseHLSL.cpp (+1-1) 
- (modified) clang/lib/Parse/ParseObjc.cpp (+20-18) 
- (modified) clang/lib/Parse/ParseOpenACC.cpp (+5-7) 
- (modified) clang/lib/Parse/ParsePragma.cpp (+8-7) 
- (modified) clang/lib/Parse/ParseStmt.cpp (+3-3) 
- (modified) clang/lib/Parse/Parser.cpp (+10-9) 
- (modified) clang/lib/Sema/ParsedAttr.cpp (+8) 
- (modified) clang/lib/Sema/SemaARM.cpp (+1-1) 
- (modified) clang/lib/Sema/SemaCodeComplete.cpp (+4-4) 
- (modified) clang/lib/Sema/SemaDeclAttr.cpp (+59-65) 
- (modified) clang/lib/Sema/SemaDeclObjC.cpp (+16-19) 
- (modified) clang/lib/Sema/SemaHLSL.cpp (+6-6) 
- (modified) clang/lib/Sema/SemaModule.cpp (+19-23) 
- (modified) clang/lib/Sema/SemaObjC.cpp (+22-23) 
- (modified) clang/lib/Sema/SemaOpenACCClause.cpp (+5-6) 
- (modified) clang/lib/Sema/SemaStmtAttr.cpp (+13-16) 
- (modified) clang/lib/Sema/SemaSwift.cpp (+12-12) 
- (modified) clang/lib/Sema/SemaTemplateVariadic.cpp (+5-5) 
- (modified) clang/lib/Sema/SemaType.cpp (+7-6) 
- (modified) clang/lib/Serialization/ASTReader.cpp (+1-1) 
- (modified) clang/lib/Serialization/ASTWriter.cpp (+4-4) 
- (modified) clang/lib/Tooling/DependencyScanning/ModuleDepCollector.cpp (+1-1) 


``````````diff
diff --git a/clang-tools-extra/pp-trace/PPCallbacksTracker.cpp b/clang-tools-extra/pp-trace/PPCallbacksTracker.cpp
index 4c916fa30685b..3bb30fd15b2e1 100644
--- a/clang-tools-extra/pp-trace/PPCallbacksTracker.cpp
+++ b/clang-tools-extra/pp-trace/PPCallbacksTracker.cpp
@@ -547,8 +547,8 @@ void PPCallbacksTracker::appendArgument(const char *Name, ModuleIdPath Value) {
     if (I)
       SS << ", ";
     SS << "{"
-       << "Name: " << Value[I].getIdentifierInfo()->getName() << ", "
-       << "Loc: " << getSourceLocationString(PP, Value[I].getLoc()) << "}";
+       << "Name: " << Value[I].first->getName() << ", "
+       << "Loc: " << getSourceLocationString(PP, Value[I].second) << "}";
   }
   SS << "]";
   appendArgument(Name, SS.str());
diff --git a/clang/include/clang/AST/OpenACCClause.h b/clang/include/clang/AST/OpenACCClause.h
index f18a6cf62f2c5..681567228cbb0 100644
--- a/clang/include/clang/AST/OpenACCClause.h
+++ b/clang/include/clang/AST/OpenACCClause.h
@@ -258,7 +258,7 @@ inline bool operator!=(const OpenACCBindClause &LHS,
   return !(LHS == RHS);
 }
 
-using DeviceTypeArgument = IdentifierLoc;
+using DeviceTypeArgument = std::pair<IdentifierInfo *, SourceLocation>;
 /// A 'device_type' or 'dtype' clause, takes a list of either an 'asterisk' or
 /// an identifier. The 'asterisk' means 'the rest'.
 class OpenACCDeviceTypeClause final
@@ -280,16 +280,16 @@ class OpenACCDeviceTypeClause final
         "Invalid clause kind for device-type");
 
     assert(!llvm::any_of(Archs, [](const DeviceTypeArgument &Arg) {
-      return Arg.getLoc().isInvalid();
+      return Arg.second.isInvalid();
     }) && "Invalid SourceLocation for an argument");
 
-    assert((Archs.size() == 1 ||
-            !llvm::any_of(Archs,
-                          [](const DeviceTypeArgument &Arg) {
-                            return Arg.getIdentifierInfo() == nullptr;
-                          })) &&
-           "Only a single asterisk version is permitted, and must be the "
-           "only one");
+    assert(
+        (Archs.size() == 1 || !llvm::any_of(Archs,
+                                            [](const DeviceTypeArgument &Arg) {
+                                              return Arg.first == nullptr;
+                                            })) &&
+        "Only a single asterisk version is permitted, and must be the "
+        "only one");
 
     std::uninitialized_copy(Archs.begin(), Archs.end(),
                             getTrailingObjects<DeviceTypeArgument>());
@@ -302,7 +302,7 @@ class OpenACCDeviceTypeClause final
   }
   bool hasAsterisk() const {
     return getArchitectures().size() > 0 &&
-           getArchitectures()[0].getIdentifierInfo() == nullptr;
+           getArchitectures()[0].first == nullptr;
   }
 
   ArrayRef<DeviceTypeArgument> getArchitectures() const {
diff --git a/clang/include/clang/Basic/IdentifierTable.h b/clang/include/clang/Basic/IdentifierTable.h
index 1275b056227b5..0347880244a40 100644
--- a/clang/include/clang/Basic/IdentifierTable.h
+++ b/clang/include/clang/Basic/IdentifierTable.h
@@ -18,7 +18,6 @@
 #include "clang/Basic/Builtins.h"
 #include "clang/Basic/DiagnosticIDs.h"
 #include "clang/Basic/LLVM.h"
-#include "clang/Basic/SourceLocation.h"
 #include "clang/Basic/TokenKinds.h"
 #include "llvm/ADT/DenseMapInfo.h"
 #include "llvm/ADT/FoldingSet.h"
@@ -77,6 +76,9 @@ inline bool isReservedInAllContexts(ReservedIdentifierStatus Status) {
          Status != ReservedIdentifierStatus::StartsWithUnderscoreAndIsExternC;
 }
 
+/// A simple pair of identifier info and location.
+using IdentifierLocPair = std::pair<IdentifierInfo *, SourceLocation>;
+
 /// IdentifierInfo and other related classes are aligned to
 /// 8 bytes so that DeclarationName can use the lower 3 bits
 /// of a pointer to one of these classes.
@@ -1163,28 +1165,6 @@ class SelectorTable {
   static std::string getPropertyNameFromSetterSelector(Selector Sel);
 };
 
-/// A simple pair of identifier info and location.
-class IdentifierLoc {
-  SourceLocation Loc;
-  IdentifierInfo *II = nullptr;
-
-public:
-  IdentifierLoc() = default;
-  IdentifierLoc(SourceLocation L, IdentifierInfo *Ident) : Loc(L), II(Ident) {}
-
-  void setLoc(SourceLocation L) { Loc = L; }
-  void setIdentifierInfo(IdentifierInfo *Ident) { II = Ident; }
-  SourceLocation getLoc() const { return Loc; }
-  IdentifierInfo *getIdentifierInfo() const { return II; }
-
-  bool operator==(const IdentifierLoc &X) const {
-    return Loc == X.Loc && II == X.II;
-  }
-
-  bool operator!=(const IdentifierLoc &X) const {
-    return Loc != X.Loc || II != X.II;
-  }
-};
 }  // namespace clang
 
 namespace llvm {
diff --git a/clang/include/clang/Lex/ModuleLoader.h b/clang/include/clang/Lex/ModuleLoader.h
index a58407200c41c..f880a9091a2ed 100644
--- a/clang/include/clang/Lex/ModuleLoader.h
+++ b/clang/include/clang/Lex/ModuleLoader.h
@@ -14,7 +14,6 @@
 #ifndef LLVM_CLANG_LEX_MODULELOADER_H
 #define LLVM_CLANG_LEX_MODULELOADER_H
 
-#include "clang/Basic/IdentifierTable.h"
 #include "clang/Basic/LLVM.h"
 #include "clang/Basic/Module.h"
 #include "clang/Basic/SourceLocation.h"
@@ -30,7 +29,7 @@ class IdentifierInfo;
 
 /// A sequence of identifier/location pairs used to describe a particular
 /// module or submodule, e.g., std.vector.
-using ModuleIdPath = ArrayRef<IdentifierLoc>;
+using ModuleIdPath = ArrayRef<std::pair<IdentifierInfo *, SourceLocation>>;
 
 /// Describes the result of attempting to load a module.
 class ModuleLoadResult {
diff --git a/clang/include/clang/Lex/PPCallbacks.h b/clang/include/clang/Lex/PPCallbacks.h
index 313b730afbab8..46cc564086f1c 100644
--- a/clang/include/clang/Lex/PPCallbacks.h
+++ b/clang/include/clang/Lex/PPCallbacks.h
@@ -15,7 +15,6 @@
 #define LLVM_CLANG_LEX_PPCALLBACKS_H
 
 #include "clang/Basic/DiagnosticIDs.h"
-#include "clang/Basic/IdentifierTable.h"
 #include "clang/Basic/SourceLocation.h"
 #include "clang/Basic/SourceManager.h"
 #include "clang/Lex/ModuleLoader.h"
diff --git a/clang/include/clang/Lex/Preprocessor.h b/clang/include/clang/Lex/Preprocessor.h
index f8f2f567f9171..24bb524783e93 100644
--- a/clang/include/clang/Lex/Preprocessor.h
+++ b/clang/include/clang/Lex/Preprocessor.h
@@ -327,7 +327,7 @@ class Preprocessor {
   SourceLocation ModuleImportLoc;
 
   /// The import path for named module that we're currently processing.
-  SmallVector<IdentifierLoc, 2> NamedModuleImportPath;
+  SmallVector<std::pair<IdentifierInfo *, SourceLocation>, 2> NamedModuleImportPath;
 
   llvm::DenseMap<FileID, SmallVector<const char *>> CheckPoints;
   unsigned CheckPointCounter = 0;
@@ -622,7 +622,7 @@ class Preprocessor {
 
   /// The identifier and source location of the currently-active
   /// \#pragma clang arc_cf_code_audited begin.
-  IdentifierLoc PragmaARCCFCodeAuditedInfo;
+  std::pair<IdentifierInfo *, SourceLocation> PragmaARCCFCodeAuditedInfo;
 
   /// The source location of the currently-active
   /// \#pragma clang assume_nonnull begin.
@@ -1998,7 +1998,8 @@ class Preprocessor {
   /// arc_cf_code_audited begin.
   ///
   /// Returns an invalid location if there is no such pragma active.
-  IdentifierLoc getPragmaARCCFCodeAuditedInfo() const {
+  std::pair<IdentifierInfo *, SourceLocation>
+  getPragmaARCCFCodeAuditedInfo() const {
     return PragmaARCCFCodeAuditedInfo;
   }
 
@@ -2006,7 +2007,7 @@ class Preprocessor {
   /// arc_cf_code_audited begin.  An invalid location ends the pragma.
   void setPragmaARCCFCodeAuditedInfo(IdentifierInfo *Ident,
                                      SourceLocation Loc) {
-    PragmaARCCFCodeAuditedInfo = IdentifierLoc(Loc, Ident);
+    PragmaARCCFCodeAuditedInfo = {Ident, Loc};
   }
 
   /// The location of the currently-active \#pragma clang
diff --git a/clang/include/clang/Parse/LoopHint.h b/clang/include/clang/Parse/LoopHint.h
index 72be043d3c5a4..cec5605ea3615 100644
--- a/clang/include/clang/Parse/LoopHint.h
+++ b/clang/include/clang/Parse/LoopHint.h
@@ -9,12 +9,12 @@
 #ifndef LLVM_CLANG_PARSE_LOOPHINT_H
 #define LLVM_CLANG_PARSE_LOOPHINT_H
 
-#include "clang/Basic/IdentifierTable.h"
 #include "clang/Basic/SourceLocation.h"
 
 namespace clang {
 
 class Expr;
+struct IdentifierLoc;
 
 /// Loop optimization hint for loop and unroll pragmas.
 struct LoopHint {
diff --git a/clang/include/clang/Parse/Parser.h b/clang/include/clang/Parse/Parser.h
index 662f54d0e8d8a..9ebcf144ba59e 100644
--- a/clang/include/clang/Parse/Parser.h
+++ b/clang/include/clang/Parse/Parser.h
@@ -1725,8 +1725,8 @@ class Parser : public CodeCompletionHandler {
   ObjCTypeParamList *parseObjCTypeParamList();
   ObjCTypeParamList *parseObjCTypeParamListOrProtocolRefs(
       ObjCTypeParamListScope &Scope, SourceLocation &lAngleLoc,
-      SmallVectorImpl<IdentifierLoc> &protocolIdents, SourceLocation &rAngleLoc,
-      bool mayBeProtocolList = true);
+      SmallVectorImpl<IdentifierLocPair> &protocolIdents,
+      SourceLocation &rAngleLoc, bool mayBeProtocolList = true);
 
   void HelperActionsForIvarDeclarations(ObjCContainerDecl *interfaceDecl,
                                         SourceLocation atLoc,
@@ -3818,7 +3818,8 @@ class Parser : public CodeCompletionHandler {
                                SourceLocation Loc,
                                llvm::SmallVectorImpl<Expr *> &IntExprs);
   /// Parses the 'device-type-list', which is a list of identifiers.
-  bool ParseOpenACCDeviceTypeList(llvm::SmallVector<IdentifierLoc> &Archs);
+  bool ParseOpenACCDeviceTypeList(
+      llvm::SmallVector<std::pair<IdentifierInfo *, SourceLocation>> &Archs);
   /// Parses the 'async-argument', which is an integral value with two
   /// 'special' values that are likely negative (but come from Macros).
   OpenACCIntExprParseResult ParseOpenACCAsyncArgument(OpenACCDirectiveKind DK,
@@ -3950,8 +3951,10 @@ class Parser : public CodeCompletionHandler {
     return false;
   }
 
-  bool ParseModuleName(SourceLocation UseLoc,
-                       SmallVectorImpl<IdentifierLoc> &Path, bool IsImport);
+  bool ParseModuleName(
+      SourceLocation UseLoc,
+      SmallVectorImpl<std::pair<IdentifierInfo *, SourceLocation>> &Path,
+      bool IsImport);
 
   //===--------------------------------------------------------------------===//
   // C++11/G++: Type Traits [Type-Traits.html in the GCC manual]
diff --git a/clang/include/clang/Sema/ParsedAttr.h b/clang/include/clang/Sema/ParsedAttr.h
index 428d3111de80d..b88b871dc8821 100644
--- a/clang/include/clang/Sema/ParsedAttr.h
+++ b/clang/include/clang/Sema/ParsedAttr.h
@@ -40,6 +40,7 @@ class LangOptions;
 class Sema;
 class Stmt;
 class TargetInfo;
+struct IdentifierLoc;
 
 /// Represents information about a change in availability for
 /// an entity, which is part of the encoding of the 'availability'
@@ -98,6 +99,15 @@ struct PropertyData {
 
 } // namespace detail
 
+/// Wraps an identifier and optional source location for the identifier.
+struct IdentifierLoc {
+  SourceLocation Loc;
+  IdentifierInfo *Ident;
+
+  static IdentifierLoc *create(ASTContext &Ctx, SourceLocation Loc,
+                               IdentifierInfo *Ident);
+};
+
 /// A union of the various pointer types that can be passed to an
 /// ParsedAttr as an argument.
 using ArgsUnion = llvm::PointerUnion<Expr *, IdentifierLoc *>;
diff --git a/clang/include/clang/Sema/Sema.h b/clang/include/clang/Sema/Sema.h
index 1f23b754a69cb..fe37fd7701ce3 100644
--- a/clang/include/clang/Sema/Sema.h
+++ b/clang/include/clang/Sema/Sema.h
@@ -143,7 +143,7 @@ enum class LangAS : unsigned int;
 class LocalInstantiationScope;
 class LookupResult;
 class MangleNumberingContext;
-typedef ArrayRef<IdentifierLoc> ModuleIdPath;
+typedef ArrayRef<std::pair<IdentifierInfo *, SourceLocation>> ModuleIdPath;
 class ModuleLoader;
 class MultiLevelTemplateArgumentList;
 struct NormalizedConstraint;
diff --git a/clang/include/clang/Sema/SemaCodeCompletion.h b/clang/include/clang/Sema/SemaCodeCompletion.h
index 3029e56e5cfe2..72159de3a6e72 100644
--- a/clang/include/clang/Sema/SemaCodeCompletion.h
+++ b/clang/include/clang/Sema/SemaCodeCompletion.h
@@ -193,7 +193,8 @@ class SemaCodeCompletion : public SemaBase {
   void CodeCompleteObjCForCollection(Scope *S, DeclGroupPtrTy IterationVar);
   void CodeCompleteObjCSelector(Scope *S,
                                 ArrayRef<const IdentifierInfo *> SelIdents);
-  void CodeCompleteObjCProtocolReferences(ArrayRef<IdentifierLoc> Protocols);
+  void
+  CodeCompleteObjCProtocolReferences(ArrayRef<IdentifierLocPair> Protocols);
   void CodeCompleteObjCProtocolDecl(Scope *S);
   void CodeCompleteObjCInterfaceDecl(Scope *S);
   void CodeCompleteObjCClassForwardDecl(Scope *S);
diff --git a/clang/include/clang/Sema/SemaObjC.h b/clang/include/clang/Sema/SemaObjC.h
index 4cda41a82b61f..791a7f45b832f 100644
--- a/clang/include/clang/Sema/SemaObjC.h
+++ b/clang/include/clang/Sema/SemaObjC.h
@@ -307,11 +307,11 @@ class SemaObjC : public SemaBase {
 
   DeclGroupPtrTy
   ActOnForwardProtocolDeclaration(SourceLocation AtProtoclLoc,
-                                  ArrayRef<IdentifierLoc> IdentList,
+                                  ArrayRef<IdentifierLocPair> IdentList,
                                   const ParsedAttributesView &attrList);
 
   void FindProtocolDeclaration(bool WarnOnDeclarations, bool ForObjCContainer,
-                               ArrayRef<IdentifierLoc> ProtocolId,
+                               ArrayRef<IdentifierLocPair> ProtocolId,
                                SmallVectorImpl<Decl *> &Protocols);
 
   void DiagnoseTypeArgsAndProtocols(IdentifierInfo *ProtocolId,
diff --git a/clang/include/clang/Sema/SemaOpenACC.h b/clang/include/clang/Sema/SemaOpenACC.h
index 8d31d46444c7e..4c3a13a3b044f 100644
--- a/clang/include/clang/Sema/SemaOpenACC.h
+++ b/clang/include/clang/Sema/SemaOpenACC.h
@@ -212,7 +212,7 @@ class SemaOpenACC : public SemaBase {
   } LoopWithoutSeqInfo;
 
   // Redeclaration of the version in OpenACCClause.h.
-  using DeviceTypeArgument = IdentifierLoc;
+  using DeviceTypeArgument = std::pair<IdentifierInfo *, SourceLocation>;
 
   /// A type to represent all the data for an OpenACC Clause that has been
   /// parsed, but not yet created/semantically analyzed. This is effectively a
diff --git a/clang/lib/AST/OpenACCClause.cpp b/clang/lib/AST/OpenACCClause.cpp
index 2820d7b288658..d7cbb51335359 100644
--- a/clang/lib/AST/OpenACCClause.cpp
+++ b/clang/lib/AST/OpenACCClause.cpp
@@ -891,10 +891,10 @@ void OpenACCClausePrinter::VisitDeviceTypeClause(
   OS << "(";
   llvm::interleaveComma(C.getArchitectures(), OS,
                         [&](const DeviceTypeArgument &Arch) {
-                          if (Arch.getIdentifierInfo() == nullptr)
+                          if (Arch.first == nullptr)
                             OS << "*";
                           else
-                            OS << Arch.getIdentifierInfo()->getName();
+                            OS << Arch.first->getName();
                         });
   OS << ")";
 }
diff --git a/clang/lib/AST/TextNodeDumper.cpp b/clang/lib/AST/TextNodeDumper.cpp
index 1bd94a3ac6431..c8b459ee78e6b 100644
--- a/clang/lib/AST/TextNodeDumper.cpp
+++ b/clang/lib/AST/TextNodeDumper.cpp
@@ -500,10 +500,10 @@ void TextNodeDumper::Visit(const OpenACCClause *C) {
       llvm::interleaveComma(
           cast<OpenACCDeviceTypeClause>(C)->getArchitectures(), OS,
           [&](const DeviceTypeArgument &Arch) {
-            if (Arch.getIdentifierInfo() == nullptr)
+            if (Arch.first == nullptr)
               OS << "*";
             else
-              OS << Arch.getIdentifierInfo()->getName();
+              OS << Arch.first->getName();
           });
       OS << ")";
       break;
diff --git a/clang/lib/Frontend/CompilerInstance.cpp b/clang/lib/Frontend/CompilerInstance.cpp
index 93e4e31c2891d..243e0a3c15b05 100644
--- a/clang/lib/Frontend/CompilerInstance.cpp
+++ b/clang/lib/Frontend/CompilerInstance.cpp
@@ -35,7 +35,6 @@
 #include "clang/Lex/Preprocessor.h"
 #include "clang/Lex/PreprocessorOptions.h"
 #include "clang/Sema/CodeCompleteConsumer.h"
-#include "clang/Sema/ParsedAttr.h"
 #include "clang/Sema/Sema.h"
 #include "clang/Serialization/ASTReader.h"
 #include "clang/Serialization/GlobalModuleIndex.h"
@@ -2010,8 +2009,8 @@ CompilerInstance::loadModule(SourceLocation ImportLoc,
                              Module::NameVisibilityKind Visibility,
                              bool IsInclusionDirective) {
   // Determine what file we're searching from.
-  StringRef ModuleName = Path[0].getIdentifierInfo()->getName();
-  SourceLocation ModuleNameLoc = Path[0].getLoc();
+  StringRef ModuleName = Path[0].first->getName();
+  SourceLocation ModuleNameLoc = Path[0].second;
 
   // If we've already handled this import, just return the cached result.
   // This one-element cache is important to eliminate redundant diagnostics
@@ -2027,7 +2026,7 @@ CompilerInstance::loadModule(SourceLocation ImportLoc,
   // If we don't already have information on this module, load the module now.
   Module *Module = nullptr;
   ModuleMap &MM = getPreprocessor().getHeaderSearchInfo().getModuleMap();
-  if (auto MaybeModule = MM.getCachedModuleLoad(*Path[0].getIdentifierInfo())) {
+  if (auto MaybeModule = MM.getCachedModuleLoad(*Path[0].first)) {
     // Use the cached result, which may be nullptr.
     Module = *MaybeModule;
     // Config macros are already checked before building a module, but they need
@@ -2047,7 +2046,7 @@ CompilerInstance::loadModule(SourceLocation ImportLoc,
     // * `Preprocessor::HandleHeaderIncludeOrImport` will never call this
     //   function as the `#include` or `#import` is textual.
 
-    MM.cacheModuleLoad(*Path[0].getIdentifierInfo(), Module);
+    MM.cacheModuleLoad(*Path[0].first, Module);
   } else {
     ModuleLoadResult Result = findOrCompileModuleAndReadAST(
         ModuleName, ImportLoc, ModuleNameLoc, IsInclusionDirective);
@@ -2056,7 +2055,7 @@ CompilerInstance::loadModule(SourceLocation ImportLoc,
     if (!Result)
       DisableGeneratingGlobalModuleIndex = true;
     Module = Result;
-    MM.cacheModuleLoad(*Path[0].getIdentifierInfo(), Module);
+    MM.cacheModuleLoad(*Path[0].first, Module);
   }
 
   // If we never found the module, fail.  Otherwise, verify the module and link
@@ -2068,7 +2067,7 @@ CompilerInstance::loadModule(SourceLocation ImportLoc,
   // a submodule.
   bool MapPrivateSubModToTopLevel = false;
   for (unsigned I = 1, N = Path.size(); I != N; ++I) {
-    StringRef Name = Path[I].getIdentifierInfo()->getName();
+    StringRef Name = Path[I].first->getName();
     clang::Module *Sub = Module->findSubmodule(Name);
 
     // If the user is requesting Foo.Private and it doesn't exist, try to
@@ -2079,10 +2078,10 @@ CompilerInstance::loadModule(SourceLocation ImportLoc,
       SmallString<128> PrivateModule(Module->Name);
       PrivateModule.append("_Private");
 
-      SmallVector<IdentifierLoc, 2> PrivPath;
+      SmallVector<std::pair<IdentifierInfo *, SourceLocation>, 2> PrivPath;
       auto &II = PP->getIdentifierTable().get(
           PrivateModule, PP->getIdentifierInfo(Module->Name)->getTokenID());
-      PrivPath.emplace_back(Path[0].getLoc(), &II);
+      PrivPath.push_back(std::make_pair(&II, Path[0].second));
 
       std::string FileName;
       // If there is a modulemap module or prebuilt module, load it.
@@ -2096,12 +2095,11 @@ CompilerInstance::loadModule(SourceLocation ImportLoc,
         PP->markClangModuleAsAffecting(Module);
         if (!getDiagnostics().isIgnored(
                 diag::warn_no_priv_submodule_use_toplevel, ImportLoc)) {
-          getDiagnostics().Report(Path[I].getLoc(),
+          getDiagnostics().Report(Path[I].second,
                                   diag::warn_no_priv_submodule_use_toplevel)
-              << Path[I].getIdentifierInfo() << Module->getFullModuleName()
-              << PrivateModule
-              << SourceRange(Path[0].getLoc(), Path[I].getLoc())
-              << FixItHint::CreateReplacement(SourceRange(Path[0].getLoc()),
+              << Path[I].first << Module->getFullModuleName() << PrivateModule
+              << SourceRange(Path[0].second, Path[I].second)
+              << FixItHint::CreateReplacement(SourceRange(Path[0].second),
                                               PrivateModule);
           getDiagnostics().Report(Sub->DefinitionLoc,
                                   diag::note_private_top_level_defined);
@@ -2130,11 +2128,10 @@ Com...
[truncated]

``````````

</details>


https://github.com/llvm/llvm-project/pull/135974


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