[AutoBump] Merge with 08195f31 (Jan 23) (18)

.github/workflows/release-binaries.yml

@@ -49,7 +49,7 @@ jobs:
   prepare:
     name: Prepare to build binaries
     runs-on: ${{ inputs.runs-on }}
-    if: github.repository == 'llvm/llvm-project'
+    if: github.repository_owner == 'llvm'
     outputs:
       release-version: ${{ steps.vars.outputs.release-version }}
       ref: ${{ steps.vars.outputs.ref }}
@@ -177,7 +177,7 @@ jobs:
   build-release-package:
     name: "Build Release Package"
     needs: prepare
-    if: github.repository == 'llvm/llvm-project'
+    if: github.repository_owner == 'llvm'
     runs-on: ${{ needs.prepare.outputs.build-runs-on }}
     steps:
 
@@ -327,7 +327,7 @@ jobs:
       - prepare
       - build-release-package
     if: >-
-      github.repository == 'llvm/llvm-project'
+      github.repository_owner == 'llvm'
     runs-on: ${{ needs.prepare.outputs.test-runs-on }}
     steps:
     - name: Checkout Actions

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

@@ -10,6 +10,7 @@
 #include "clang/AST/ASTContext.h"
 #include "clang/AST/Decl.h"
 #include "clang/ASTMatchers/ASTMatchFinder.h"
+#include "clang/ASTMatchers/ASTMatchers.h"
 #include "clang/Lex/Lexer.h"
 
 using namespace clang::ast_matchers;

clang/docs/BoundsSafety.rst

@@ -996,4 +996,11 @@ and the soundness of the type system. This may incur significant code size
 overhead in unoptimized builds and leaving some of the adoption mistakes to be
 caught only at run time. This is not a fundamental limitation, however, because
 incrementally adding necessary static analysis will allow us to catch issues
-early on and remove unnecessary bounds checks in unoptimized builds.
+early on and remove unnecessary bounds checks in unoptimized builds.
+
+Try it out
+==========
+
+Your feedback on the programming model is valuable. You may want to follow the
+instruction in :doc:`BoundsSafetyAdoptionGuide` to play with ``-fbounds-safety``
+and please send your feedback to `Yeoul Na <mailto:[email protected]>`_.

clang/docs/BoundsSafetyAdoptionGuide.rst

@@ -0,0 +1,90 @@
+======================================
+Adoption Guide for ``-fbounds-safety``
+======================================
+
+.. contents::
+   :local:
+
+Where to get ``-fbounds-safety``
+================================
+
+The open sourcing to llvm.org's ``llvm-project`` is still on going and the
+feature is not available yet. In the mean time, the preview implementation is
+available
+`here <https://github.com/swiftlang/llvm-project/tree/stable/20240723>`_ in a
+fork of ``llvm-project``. Please follow
+`Building LLVM with CMake <https://llvm.org/docs/CMake.html>`_ to build the
+compiler.
+
+Feature flag
+============
+
+Pass ``-fbounds-safety`` as a Clang compilation flag for the C file that you
+want to adopt. We recommend adopting the model file by file, because adoption
+requires some effort to add bounds annotations and fix compiler diagnostics.
+
+Include ``ptrcheck.h``
+======================
+
+``ptrcheck.h`` is a Clang toolchain header to provide definition of the bounds
+annotations such as ``__counted_by``, ``__counted_by_or_null``, ``__sized_by``,
+etc. In the LLVM source tree, the header is located in
+``llvm-project/clang/lib/Headers/ptrcheck.h``.
+
+
+Add bounds annotations on pointers as necessary
+===============================================
+
+Annotate pointers on struct fields and function parameters if they are pointing
+to an array of object, with appropriate bounds annotations. Please see
+:doc:`BoundsSafety` to learn what kind of bounds annotations are available and
+their semantics. Note that local pointer variables typically don't need bounds
+annotations because they are implicitely a wide pointer (``__bidi_indexable``)
+that automatically carries the bounds information.
+
+Address compiler diagnostics
+============================
+
+Once you pass ``-fbounds-safety`` to compiler a C file, you will see some new
+compiler warnings and errors, which guide adoption of ``-fbounds-safety``.
+Consider the following example:
+
+.. code-block:: c
+
+   #include <ptrcheck.h>
+
+   void init_buf(int *p, int n) {
+      for (int i = 0; i < n; ++i)
+         p[i] = 0; // error: array subscript on single pointer 'p' must use a constant index of 0 to be in bounds
+   }
+
+The parameter ``int *p`` doesn't have a bounds annotation, so the compiler will
+complain about the code indexing into it (``p[i]``) as it assumes that ``p`` is
+pointing to a single ``int`` object or null. To address the diagnostics, you
+should add a bounds annotation on ``int *p`` so that the compiler can reason
+about the safety of the array subscript. In the following example, ``p`` is now
+``int *__counted_by(n)``, so the compiler will allow the array subscript with
+additional run-time checks as necessary.
+
+.. code-block:: c
+
+   #include <ptrcheck.h>
+
+   void init_buf(int *__counted_by(n) p, int n) {
+      for (int i = 0; i < n; ++i)
+         p[i] = 0; // ok; `p` is now has a type with bounds annotation.
+   }
+
+Run test suites to fix new run-time traps
+=========================================
+
+Adopting ``-fbounds-safety`` may cause your program to trap if it violates
+bounds safety or it has incorrect adoption. Thus, it is necessary to perform
+run-time testing of your program to gain confidence that it won't trap at
+run time.
+
+Repeat the process for each remaining file
+==========================================
+
+Once you've done with adopting a single C file, please repeat the same process
+for each remaining C file that you want to adopt.

clang/docs/ReleaseNotes.rst

@@ -363,6 +363,9 @@ Resolutions to C++ Defect Reports
 - Clang now allows trailing requires clause on explicit deduction guides.
   (`CWG2707: Deduction guides cannot have a trailing requires-clause <https://cplusplus.github.io/CWG/issues/2707.html>`_).
 
+- Respect constructor constraints during CTAD.
+  (`CWG2628: Implicit deduction guides should propagate constraints <https://cplusplus.github.io/CWG/issues/2628.html>`_).
+
 - Clang now diagnoses a space in the first production of a ``literal-operator-id``
   by default.
   (`CWG2521: User-defined literals and reserved identifiers <https://cplusplus.github.io/CWG/issues/2521.html>`_).
@@ -971,6 +974,7 @@ Bug Fixes to C++ Support
 - Fixed canonicalization of pack indexing types - Clang did not always recognized identical pack indexing. (#GH123033)
 - Fixed a nested lambda substitution issue for constraint evaluation. (#GH123441)
 - Fixed various false diagnostics related to the use of immediate functions. (#GH123472)
+- Fix immediate escalation not propagating through inherited constructors.  (#GH112677)
 
 Bug Fixes to AST Handling
 ^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -1131,6 +1135,20 @@ Windows Support
 LoongArch Support
 ^^^^^^^^^^^^^^^^^
 
+- Types of parameters and return value of ``__builtin_lsx_vorn_v`` and ``__builtin_lasx_xvorn_v``
+  are changed from ``signed char`` to ``unsigned char``. (#GH114514)
+
+- ``-mrelax`` and ``-mno-relax`` are supported now on LoongArch that can be used
+  to enable / disable the linker relaxation optimization. (#GH123587)
+
+- Fine-grained la64v1.1 options are added including ``-m{no-,}frecipe``, ``-m{no-,}lam-bh``,
+  ``-m{no-,}ld-seq-sa``, ``-m{no-,}div32``, ``-m{no-,}lamcas`` and ``-m{no-,}scq``.
+
+- Two options ``-m{no-,}annotate-tablejump`` are added to enable / disable
+  annotating table jump instruction to correlate it with the jump table. (#GH102411)
+
+- FreeBSD support is added for LoongArch64 and has been tested by building kernel-toolchain. (#GH119191)
+
 RISC-V Support
 ^^^^^^^^^^^^^^
 
@@ -1254,6 +1272,13 @@ libclang
 - Added ``clang_getOffsetOfBase``, which allows computing the offset of a base
   class in a class's layout.
 
+
+Code Completion
+---------------
+
+- Use ``HeuristicResolver`` (upstreamed from clangd) to improve code completion results
+  in dependent code
+
 Static Analyzer
 ---------------
 

clang/docs/index.rst

@@ -40,6 +40,7 @@ Using Clang as a Compiler
    SanitizerStats
    SanitizerSpecialCaseList
    BoundsSafety
+   BoundsSafetyAdoptionGuide
    BoundsSafetyImplPlans
    ControlFlowIntegrity
    LTOVisibility

clang/include/clang/AST/ASTNodeTraverser.h

@@ -158,8 +158,8 @@ class ASTNodeTraverser
       ConstStmtVisitor<Derived>::Visit(S);
 
       // Some statements have custom mechanisms for dumping their children.
-      if (isa<DeclStmt>(S) || isa<GenericSelectionExpr>(S) ||
-          isa<RequiresExpr>(S) || isa<OpenACCWaitConstruct>(S))
+      if (isa<DeclStmt, GenericSelectionExpr, RequiresExpr,
+              OpenACCWaitConstruct, SYCLKernelCallStmt>(S))
         return;
 
       if (Traversal == TK_IgnoreUnlessSpelledInSource &&
@@ -585,6 +585,12 @@ class ASTNodeTraverser
 
   void VisitTopLevelStmtDecl(const TopLevelStmtDecl *D) { Visit(D->getStmt()); }
 
+  void VisitOutlinedFunctionDecl(const OutlinedFunctionDecl *D) {
+    for (const ImplicitParamDecl *Parameter : D->parameters())
+      Visit(Parameter);
+    Visit(D->getBody());
+  }
+
   void VisitCapturedDecl(const CapturedDecl *D) { Visit(D->getBody()); }
 
   void VisitOMPThreadPrivateDecl(const OMPThreadPrivateDecl *D) {
@@ -815,6 +821,12 @@ class ASTNodeTraverser
     Visit(Node->getCapturedDecl());
   }
 
+  void VisitSYCLKernelCallStmt(const SYCLKernelCallStmt *Node) {
+    Visit(Node->getOriginalStmt());
+    if (Traversal != TK_IgnoreUnlessSpelledInSource)
+      Visit(Node->getOutlinedFunctionDecl());
+  }
+
   void VisitOMPExecutableDirective(const OMPExecutableDirective *Node) {
     for (const auto *C : Node->clauses())
       Visit(C);

clang/include/clang/AST/Decl.h

@@ -4688,6 +4688,83 @@ class BlockDecl : public Decl, public DeclContext {
   }
 };
 
+/// Represents a partial function definition.
+///
+/// An outlined function declaration contains the parameters and body of
+/// a function independent of other function definition concerns such
+/// as function name, type, and calling convention. Such declarations may
+/// be used to hold a parameterized and transformed sequence of statements
+/// used to generate a target dependent function definition without losing
+/// association with the original statements. See SYCLKernelCallStmt as an
+/// example.
+class OutlinedFunctionDecl final
+    : public Decl,
+      public DeclContext,
+      private llvm::TrailingObjects<OutlinedFunctionDecl, ImplicitParamDecl *> {
+private:
+  /// The number of parameters to the outlined function.
+  unsigned NumParams;
+
+  /// The body of the outlined function.
+  llvm::PointerIntPair<Stmt *, 1, bool> BodyAndNothrow;
+
+  explicit OutlinedFunctionDecl(DeclContext *DC, unsigned NumParams);
+
+  ImplicitParamDecl *const *getParams() const {
+    return getTrailingObjects<ImplicitParamDecl *>();
+  }
+
+  ImplicitParamDecl **getParams() {
+    return getTrailingObjects<ImplicitParamDecl *>();
+  }
+
+public:
+  friend class ASTDeclReader;
+  friend class ASTDeclWriter;
+  friend TrailingObjects;
+
+  static OutlinedFunctionDecl *Create(ASTContext &C, DeclContext *DC,
+                                      unsigned NumParams);
+  static OutlinedFunctionDecl *
+  CreateDeserialized(ASTContext &C, GlobalDeclID ID, unsigned NumParams);
+
+  Stmt *getBody() const override;
+  void setBody(Stmt *B);
+
+  bool isNothrow() const;
+  void setNothrow(bool Nothrow = true);
+
+  unsigned getNumParams() const { return NumParams; }
+
+  ImplicitParamDecl *getParam(unsigned i) const {
+    assert(i < NumParams);
+    return getParams()[i];
+  }
+  void setParam(unsigned i, ImplicitParamDecl *P) {
+    assert(i < NumParams);
+    getParams()[i] = P;
+  }
+
+  // Range interface to parameters.
+  using parameter_const_iterator = const ImplicitParamDecl *const *;
+  using parameter_const_range = llvm::iterator_range<parameter_const_iterator>;
+  parameter_const_range parameters() const {
+    return {param_begin(), param_end()};
+  }
+  parameter_const_iterator param_begin() const { return getParams(); }
+  parameter_const_iterator param_end() const { return getParams() + NumParams; }
+
+  // Implement isa/cast/dyncast/etc.
+  static bool classof(const Decl *D) { return classofKind(D->getKind()); }
+  static bool classofKind(Kind K) { return K == OutlinedFunction; }
+  static DeclContext *castToDeclContext(const OutlinedFunctionDecl *D) {
+    return static_cast<DeclContext *>(const_cast<OutlinedFunctionDecl *>(D));
+  }
+  static OutlinedFunctionDecl *castFromDeclContext(const DeclContext *DC) {
+    return static_cast<OutlinedFunctionDecl *>(const_cast<DeclContext *>(DC));
+  }
+};
+
 /// Represents the body of a CapturedStmt, and serves as its DeclContext.
 class CapturedDecl final
     : public Decl,

clang/include/clang/AST/RecursiveASTVisitor.h

@@ -37,6 +37,7 @@
 #include "clang/AST/StmtObjC.h"
 #include "clang/AST/StmtOpenACC.h"
 #include "clang/AST/StmtOpenMP.h"
+#include "clang/AST/StmtSYCL.h"
 #include "clang/AST/TemplateBase.h"
 #include "clang/AST/TemplateName.h"
 #include "clang/AST/Type.h"
@@ -1581,6 +1582,11 @@ DEF_TRAVERSE_DECL(BlockDecl, {
   ShouldVisitChildren = false;
 })
 
+DEF_TRAVERSE_DECL(OutlinedFunctionDecl, {
+  TRY_TO(TraverseStmt(D->getBody()));
+  ShouldVisitChildren = false;
+})
+
 DEF_TRAVERSE_DECL(CapturedDecl, {
   TRY_TO(TraverseStmt(D->getBody()));
   ShouldVisitChildren = false;
@@ -2904,6 +2910,14 @@ DEF_TRAVERSE_STMT(SEHFinallyStmt, {})
 DEF_TRAVERSE_STMT(SEHLeaveStmt, {})
 DEF_TRAVERSE_STMT(CapturedStmt, { TRY_TO(TraverseDecl(S->getCapturedDecl())); })
 
+DEF_TRAVERSE_STMT(SYCLKernelCallStmt, {
+  if (getDerived().shouldVisitImplicitCode()) {
+    TRY_TO(TraverseStmt(S->getOriginalStmt()));
+    TRY_TO(TraverseDecl(S->getOutlinedFunctionDecl()));
+    ShouldVisitChildren = false;
+  }
+})
+
 DEF_TRAVERSE_STMT(CXXOperatorCallExpr, {})
 DEF_TRAVERSE_STMT(CXXRewrittenBinaryOperator, {
   if (!getDerived().shouldVisitImplicitCode()) {