Merge branch 'main' into subgroup_propagation

Author: charithaintc

.github/workflows/libclang-python-tests.yml

@@ -30,7 +30,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.8", "3.11"]
+        python-version: ["3.8", "3.13"]
     uses: ./.github/workflows/llvm-project-tests.yml
     with:
       build_target: check-clang-python

clang-tools-extra/clang-tidy/misc/UseInternalLinkageCheck.cpp

@@ -52,7 +52,7 @@ AST_MATCHER(FunctionDecl, hasBody) { return Node.hasBody(); }
 static bool isInMainFile(SourceLocation L, SourceManager &SM,
                          const FileExtensionsSet &HeaderFileExtensions) {
   for (;;) {
-    if (utils::isSpellingLocInHeaderFile(L, SM, HeaderFileExtensions))
+    if (utils::isExpansionLocInHeaderFile(L, SM, HeaderFileExtensions))
       return false;
     if (SM.isInMainFile(L))
       return true;

clang-tools-extra/clang-tidy/utils/UseRangesCheck.cpp

@@ -215,6 +215,19 @@ void UseRangesCheck::check(const MatchFinder::MatchResult &Result) {
     const auto *Call = Result.Nodes.getNodeAs<CallExpr>(Buffer);
     if (!Call)
       continue;
+
+    // FIXME: This check specifically handles `CXXNullPtrLiteralExpr`, but
+    // a more general solution might be needed.
+    if (Function->getName() == "find") {
+      const unsigned ValueArgIndex = 2;
+      if (Call->getNumArgs() <= ValueArgIndex)
+        continue;
+      const Expr *ValueExpr =
+          Call->getArg(ValueArgIndex)->IgnoreParenImpCasts();
+      if (isa<CXXNullPtrLiteralExpr>(ValueExpr))
+        return;
+    }
+
     auto Diag = createDiag(*Call);
     if (auto ReplaceName = Replacer->getReplaceName(*Function))
       Diag << FixItHint::CreateReplacement(Call->getCallee()->getSourceRange(),

clang-tools-extra/clangd/Config.h

@@ -59,13 +59,18 @@ struct Config {
     std::optional<std::string> FixedCDBPath;
   };
 
+  enum class BuiltinHeaderPolicy { Clangd, QueryDriver };
   /// Controls how the compile command for the current file is determined.
   struct {
     /// Edits to apply to the compile command, in sequence.
     std::vector<llvm::unique_function<void(std::vector<std::string> &) const>>
         Edits;
     /// Where to search for compilation databases for this file's flags.
     CDBSearchSpec CDBSearch = {CDBSearchSpec::Ancestors, std::nullopt};
+
+    /// Whether to use clangd's own builtin headers, or ones from the system
+    /// include extractor, if available.
+    BuiltinHeaderPolicy BuiltinHeaders = BuiltinHeaderPolicy::Clangd;
   } CompileFlags;
 
   enum class BackgroundPolicy { Build, Skip };

clang-tools-extra/clangd/ConfigCompile.cpp

@@ -290,6 +290,18 @@ struct FragmentCompiler {
       });
     }
 
+    if (F.BuiltinHeaders) {
+      if (auto Val =
+              compileEnum<Config::BuiltinHeaderPolicy>("BuiltinHeaders",
+                                                       *F.BuiltinHeaders)
+                  .map("Clangd", Config::BuiltinHeaderPolicy::Clangd)
+                  .map("QueryDriver", Config::BuiltinHeaderPolicy::QueryDriver)
+                  .value())
+        Out.Apply.push_back([Val](const Params &, Config &C) {
+          C.CompileFlags.BuiltinHeaders = *Val;
+        });
+    }
+
     if (F.CompilationDatabase) {
       std::optional<Config::CDBSearchSpec> Spec;
       if (**F.CompilationDatabase == "Ancestors") {

clang-tools-extra/clangd/ConfigFragment.h

@@ -170,6 +170,14 @@ struct Fragment {
     /// - Ancestors: search all parent directories (the default)
     /// - std::nullopt: do not use a compilation database, just default flags.
     std::optional<Located<std::string>> CompilationDatabase;
+
+    /// Controls whether Clangd should use its own built-in system headers (like
+    /// stddef.h), or use the system headers from the query driver. Use the
+    /// option value 'Clangd' (default) to indicate Clangd's headers, and use
+    /// 'QueryDriver' to indicate QueryDriver's headers. `Clangd` is the
+    /// fallback if no query driver is supplied or if the query driver regex
+    /// string fails to match the compiler used in the CDB.
+    std::optional<Located<std::string>> BuiltinHeaders;
   };
   CompileFlagsBlock CompileFlags;
 

clang-tools-extra/clangd/ConfigYAML.cpp

@@ -104,6 +104,10 @@ class Parser {
       if (auto Values = scalarValues(N))
         F.Remove = std::move(*Values);
     });
+    Dict.handle("BuiltinHeaders", [&](Node &N) {
+      if (auto BuiltinHeaders = scalarValue(N, "BuiltinHeaders"))
+        F.BuiltinHeaders = *BuiltinHeaders;
+    });
     Dict.handle("CompilationDatabase", [&](Node &N) {
       F.CompilationDatabase = scalarValue(N, "CompilationDatabase");
     });

clang-tools-extra/clangd/IncludeFixer.cpp

@@ -84,7 +84,6 @@ std::vector<Fix> IncludeFixer::fix(DiagnosticsEngine::Level DiagLevel,
   case diag::err_array_incomplete_or_sizeless_type:
   case diag::err_array_size_incomplete_type:
   case diag::err_asm_incomplete_type:
-  case diag::err_assoc_type_incomplete:
   case diag::err_bad_cast_incomplete:
   case diag::err_call_function_incomplete_return:
   case diag::err_call_incomplete_argument:

clang-tools-extra/clangd/SystemIncludeExtractor.cpp

@@ -30,6 +30,7 @@
 // in the paths that are explicitly included by the user.
 
 #include "CompileCommands.h"
+#include "Config.h"
 #include "GlobalCompilationDatabase.h"
 #include "support/Logger.h"
 #include "support/Threading.h"
@@ -401,22 +402,30 @@ extractSystemIncludesAndTarget(const DriverArgs &InputArgs,
   if (!Info)
     return std::nullopt;
 
-  // The built-in headers are tightly coupled to parser builtins.
-  // (These are clang's "resource dir", GCC's GCC_INCLUDE_DIR.)
-  // We should keep using clangd's versions, so exclude the queried builtins.
-  // They're not specially marked in the -v output, but we can get the path
-  // with `$DRIVER -print-file-name=include`.
-  if (auto BuiltinHeaders =
-          run({Driver, "-print-file-name=include"}, /*OutputIsStderr=*/false)) {
-    auto Path = llvm::StringRef(*BuiltinHeaders).trim();
-    if (!Path.empty() && llvm::sys::path::is_absolute(Path)) {
-      auto Size = Info->SystemIncludes.size();
-      llvm::erase(Info->SystemIncludes, Path);
-      vlog("System includes extractor: builtin headers {0} {1}", Path,
-           (Info->SystemIncludes.size() != Size)
-               ? "excluded"
-               : "not found in driver's response");
+  switch (Config::current().CompileFlags.BuiltinHeaders) {
+  case Config::BuiltinHeaderPolicy::Clangd: {
+    // The built-in headers are tightly coupled to parser builtins.
+    // (These are clang's "resource dir", GCC's GCC_INCLUDE_DIR.)
+    // We should keep using clangd's versions, so exclude the queried
+    // builtins. They're not specially marked in the -v output, but we can
+    // get the path with `$DRIVER -print-file-name=include`.
+    if (auto BuiltinHeaders = run({Driver, "-print-file-name=include"},
+                                  /*OutputIsStderr=*/false)) {
+      auto Path = llvm::StringRef(*BuiltinHeaders).trim();
+      if (!Path.empty() && llvm::sys::path::is_absolute(Path)) {
+        auto Size = Info->SystemIncludes.size();
+        llvm::erase(Info->SystemIncludes, Path);
+        vlog("System includes extractor: builtin headers {0} {1}", Path,
+             (Info->SystemIncludes.size() != Size)
+                 ? "excluded"
+                 : "not found in driver's response");
+      }
     }
+    break;
+  }
+  case Config::BuiltinHeaderPolicy::QueryDriver:
+    vlog("System includes extractor: Using builtin headers from query driver.");
+    break;
   }
 
   log("System includes extractor: successfully executed {0}\n\tgot includes: "

clang-tools-extra/docs/ReleaseNotes.rst

@@ -58,6 +58,9 @@ Semantic Highlighting
 Compile flags
 ^^^^^^^^^^^^^
 
+- Added `BuiltinHeaders` config key which controls whether clangd's built-in
+  headers are used or ones extracted from the driver.
+
 Hover
 ^^^^^
 
@@ -112,7 +115,7 @@ Changes in existing checks
   <clang-tidy/checks/bugprone/unchecked-optional-access>` fixing false
   positives from smart pointer accessors repeated in checking ``has_value``
   and accessing ``value``. The option `IgnoreSmartPointerDereference` should
-  no longer be needed and will be removed. Also fixing false positive from 
+  no longer be needed and will be removed. Also fixing false positive from
   const reference accessors to objects containing optional member.
 
 - Improved :doc:`bugprone-unsafe-functions
@@ -128,10 +131,18 @@ Changes in existing checks
 - Improved :doc:`misc-redundant-expression
   <clang-tidy/checks/misc/redundant-expression>` check by providing additional
   examples and fixing some macro related false positives.
+  
+- Improved :doc:`modernize-use-ranges
+  <clang-tidy/checks/modernize/use-ranges>` check by updating suppress 
+  warnings logic for ``nullptr`` in ``std::find``.
+
+- Improved :doc:`misc-use-internal-linkage
+  <clang-tidy/checks/misc/use-internal-linkage>` check by fix false positives
+  for function or variable in header file which contains macro expansion.
 
 - Improved :doc:`performance/unnecessary-value-param
   <clang-tidy/checks/performance/unnecessary-value-param>` check performance by
-  tolerating fix-it breaking compilation when functions is used as pointers 
+  tolerating fix-it breaking compilation when functions is used as pointers
   to avoid matching usage of functions within the current compilation unit.
 
 - Improved :doc:`performance-move-const-arg