Merge branch 'llvm:main' into copy-inout-dev

Author: eugeneepshteyn

.ci/compute_projects_test.py

@@ -284,6 +284,34 @@ def test_ci(self):
             "check-cxx check-cxxabi check-unwind",
         )
 
+    def test_windows_ci(self):
+        env_variables = compute_projects.get_env_variables(
+            [".ci/compute_projects.py"], "Windows"
+        )
+        self.assertEqual(
+            env_variables["projects_to_build"],
+            "clang;clang-tools-extra;libclc;lld;llvm;mlir;polly",
+        )
+        self.assertEqual(
+            env_variables["project_check_targets"],
+            "check-clang check-clang-cir check-clang-tools check-lld check-llvm check-mlir check-polly",
+        )
+        self.assertEqual(
+            env_variables["runtimes_to_build"],
+            "libcxx;libcxxabi;libunwind",
+        )
+        self.assertEqual(
+            env_variables["runtimes_check_targets"],
+            "",
+        )
+        # TODO(boomanaiden154): We should not be emitting these on Windows.
+        # It does not currently impact anything because we do not build the
+        # runtimes on Windows though.
+        self.assertEqual(
+            env_variables["runtimes_check_targets_needs_reconfig"],
+            "check-cxx check-cxxabi check-unwind",
+        )
+
     def test_lldb(self):
         env_variables = compute_projects.get_env_variables(
             ["lldb/CMakeLists.txt"], "Linux"

.github/workflows/libc-fullbuild-tests.yml

@@ -20,38 +20,32 @@ jobs:
         include:
           - os: ubuntu-24.04
             build_type: Debug
-            ccache-variant: sccache
-            c_compiler: clang-20
-            cpp_compiler: clang++-20
+            c_compiler: clang-22
+            cpp_compiler: clang++-22
             target: x86_64-unknown-linux-llvm
             include_scudo: ON
           - os: ubuntu-24.04
             build_type: Release
-            ccache-variant: sccache
-            c_compiler: clang-20
-            cpp_compiler: clang++-20
+            c_compiler: clang-22
+            cpp_compiler: clang++-22
             target: x86_64-unknown-linux-llvm
             include_scudo: ON
           - os: ubuntu-24.04
             build_type: MinSizeRel
-            ccache-variant: sccache
-            c_compiler: clang-20
-            cpp_compiler: clang++-20
+            c_compiler: clang-22
+            cpp_compiler: clang++-22
             target: x86_64-unknown-linux-llvm
             include_scudo: ON
-          # TODO: remove ccache logic when https://github.com/hendrikmuhs/ccache-action/issues/279 is resolved.
           - os: ubuntu-24.04-arm
             build_type: Debug
-            ccache-variant: ccache
-            c_compiler: clang-20
-            cpp_compiler: clang++-20
+            c_compiler: clang-22
+            cpp_compiler: clang++-22
             target: aarch64-unknown-linux-llvm
             include_scudo: ON
           - os: ubuntu-24.04
             build_type: Debug
-            ccache-variant: ccache
-            c_compiler: clang-20
-            cpp_compiler: clang++-20
+            c_compiler: clang-22
+            cpp_compiler: clang++-22
             target: x86_64-unknown-uefi-llvm
             include_scudo: OFF
           # TODO: add back gcc build when it is fixed
@@ -71,7 +65,7 @@ jobs:
       with:
         max-size: 1G
         key: libc_fullbuild_${{ matrix.c_compiler }}
-        variant: ${{ matrix.ccache-variant }}
+        variant: sccache
 
     # Notice:
     # - MPFR is required by some of the mathlib tests.
@@ -81,7 +75,7 @@ jobs:
       run: |
         wget https://apt.llvm.org/llvm.sh
         chmod +x llvm.sh
-        sudo ./llvm.sh 20
+        sudo ./llvm.sh 22
         sudo apt-get update
         sudo apt-get install -y libmpfr-dev libgmp-dev libmpc-dev ninja-build linux-libc-dev
         sudo ln -sf /usr/include/$(uname -p)-linux-gnu/asm /usr/include/asm
@@ -112,8 +106,8 @@ jobs:
         -DCMAKE_CXX_COMPILER=${{ matrix.cpp_compiler }} \
         -DCMAKE_C_COMPILER=${{ matrix.c_compiler }} \
         -DCMAKE_BUILD_TYPE=${{ matrix.build_type }} \
-        -DCMAKE_C_COMPILER_LAUNCHER=${{ matrix.ccache-variant }} \
-        -DCMAKE_CXX_COMPILER_LAUNCHER=${{ matrix.ccache-variant }} \
+        -DCMAKE_C_COMPILER_LAUNCHER=sccache \
+        -DCMAKE_CXX_COMPILER_LAUNCHER=sccache \
         -DCMAKE_INSTALL_PREFIX=${{ steps.strings.outputs.build-install-dir }} \
         -DLLVM_RUNTIME_TARGETS=${{ matrix.target }} \
         -DLLVM_ENABLE_RUNTIMES="$RUNTIMES" \

.github/workflows/libc-overlay-tests.yml

@@ -20,28 +20,22 @@ jobs:
         include:
           # TODO: add linux gcc when it is fixed
           - os: ubuntu-24.04
-            ccache-variant: sccache
             compiler:
               c_compiler: clang
               cpp_compiler: clang++
-          # TODO: remove ccache logic when https://github.com/hendrikmuhs/ccache-action/issues/279 is resolved.
           - os: ubuntu-24.04-arm
-            ccache-variant: ccache
             compiler:
               c_compiler: clang
               cpp_compiler: clang++
           - os: windows-2022
-            ccache-variant: sccache
             compiler:
               c_compiler: clang-cl
               cpp_compiler: clang-cl
           - os: windows-2025
-            ccache-variant: sccache
             compiler:
               c_compiler: clang-cl
               cpp_compiler: clang-cl
           - os: macos-14
-            ccache-variant: sccache
             compiler:
               c_compiler: clang
               cpp_compiler: clang++
@@ -61,7 +55,7 @@ jobs:
       with:
         max-size: 1G
         key: libc_overlay_build_${{ matrix.os }}_${{ matrix.compiler.c_compiler }}
-        variant: ${{ matrix.ccache-variant }}
+        variant: sccache
 
     # MPFR is required by some of the mathlib tests.
     - name: Prepare dependencies (Ubuntu)
@@ -97,8 +91,8 @@ jobs:
         -DCMAKE_CXX_COMPILER=${{ matrix.compiler.cpp_compiler }}
         -DCMAKE_C_COMPILER=${{ matrix.compiler.c_compiler }}
         -DCMAKE_BUILD_TYPE=Debug
-        -DCMAKE_C_COMPILER_LAUNCHER=${{ matrix.ccache-variant }}
-        -DCMAKE_CXX_COMPILER_LAUNCHER=${{ matrix.ccache-variant }}
+        -DCMAKE_C_COMPILER_LAUNCHER=sccache
+        -DCMAKE_CXX_COMPILER_LAUNCHER=sccache
         -DCMAKE_POLICY_DEFAULT_CMP0141=NEW
         -DCMAKE_MSVC_DEBUG_INFORMATION_FORMAT=Embedded
         -DLLVM_ENABLE_RUNTIMES=libc

.github/workflows/libcxx-build-and-test.yaml

@@ -260,11 +260,11 @@ jobs:
       - name: Install a current LLVM
         if: ${{ matrix.mingw != true }}
         run: |
-          choco install -y llvm --version=19.1.7 --allow-downgrade
+          choco install -y llvm --version=20.1.8 --allow-downgrade
       - name: Install llvm-mingw
         if: ${{ matrix.mingw == true }}
         run: |
-          curl -LO https://github.com/mstorsjo/llvm-mingw/releases/download/20250114/llvm-mingw-20250114-ucrt-x86_64.zip
+          curl -LO https://github.com/mstorsjo/llvm-mingw/releases/download/20250709/llvm-mingw-20250709-ucrt-x86_64.zip
           powershell Expand-Archive llvm-mingw*.zip -DestinationPath .
           del llvm-mingw*.zip
           mv llvm-mingw* c:\llvm-mingw

bolt/test/link_fdata.py

@@ -9,6 +9,7 @@
 
 import argparse
 import os
+import platform
 import shutil
 import subprocess
 import sys
@@ -19,7 +20,11 @@
 parser.add_argument("objfile", help="Object file to extract symbol values from")
 parser.add_argument("output")
 parser.add_argument("prefix", nargs="?", default="FDATA", help="Custom FDATA prefix")
-parser.add_argument("--nmtool", default="nm", help="Path to nm tool")
+parser.add_argument(
+    "--nmtool",
+    default="llvm-nm" if platform.system() == "Windows" else "nm",
+    help="Path to nm tool",
+)
 parser.add_argument("--no-lbr", action="store_true")
 parser.add_argument("--no-redefine", action="store_true")
 
@@ -86,7 +91,10 @@
             exit("ERROR: unexpected input:\n%s" % line)
 
 # Read nm output: <symbol value> <symbol type> <symbol name>
-is_llvm_nm = os.path.basename(os.path.realpath(shutil.which(args.nmtool))) == "llvm-nm"
+# Ignore .exe on Windows host.
+is_llvm_nm = os.path.basename(os.path.realpath(shutil.which(args.nmtool))).startswith(
+    "llvm-nm"
+)
 nm_output = subprocess.run(
     [
         args.nmtool,

clang-tools-extra/clang-tidy/performance/UnnecessaryCopyInitialization.cpp

@@ -349,23 +349,25 @@ void UnnecessaryCopyInitialization::diagnoseCopyFromMethodReturn(
     const CheckContext &Ctx) {
   auto Diagnostic =
       diag(Ctx.Var.getLocation(),
-           "the %select{|const qualified }0variable %1 is "
+           "the %select{|const qualified }0variable %1 of type %2 is "
            "copy-constructed "
            "from a const reference%select{%select{ but is only used as const "
-           "reference|}0| but is never used}2; consider "
-           "%select{making it a const reference|removing the statement}2")
-      << Ctx.Var.getType().isConstQualified() << &Ctx.Var << Ctx.IsVarUnused;
+           "reference|}0| but is never used}3; consider "
+           "%select{making it a const reference|removing the statement}3")
+      << Ctx.Var.getType().isConstQualified() << &Ctx.Var << Ctx.Var.getType()
+      << Ctx.IsVarUnused;
   maybeIssueFixes(Ctx, Diagnostic);
 }
 
 void UnnecessaryCopyInitialization::diagnoseCopyFromLocalVar(
     const CheckContext &Ctx, const VarDecl &OldVar) {
   auto Diagnostic =
       diag(Ctx.Var.getLocation(),
-           "local copy %1 of the variable %0 is never modified%select{"
-           "| and never used}2; consider %select{avoiding the copy|removing "
-           "the statement}2")
-      << &OldVar << &Ctx.Var << Ctx.IsVarUnused;
+           "local copy %0 of the variable %1 of type %2 is never "
+           "modified%select{"
+           "| and never used}3; consider %select{avoiding the copy|removing "
+           "the statement}3")
+      << &Ctx.Var << &OldVar << Ctx.Var.getType() << Ctx.IsVarUnused;
   maybeIssueFixes(Ctx, Diagnostic);
 }
 

clang-tools-extra/clang-tidy/performance/UnnecessaryValueParamCheck.cpp

@@ -143,10 +143,12 @@ void UnnecessaryValueParamCheck::handleConstRefFix(const FunctionDecl &Function,
 
   auto Diag =
       diag(Param.getLocation(),
-           "the %select{|const qualified }0parameter %1 is copied for each "
+           "the %select{|const qualified }0parameter %1 of type %2 is copied "
+           "for each "
            "invocation%select{ but only used as a const reference|}0; consider "
            "making it a %select{const |}0reference")
-      << IsConstQualified << paramNameOrIndex(Param.getName(), Index);
+      << IsConstQualified << paramNameOrIndex(Param.getName(), Index)
+      << Param.getType();
   // Do not propose fixes when:
   // 1. the ParmVarDecl is in a macro, since we cannot place them correctly
   // 2. the function is virtual as it might break overrides
@@ -173,10 +175,11 @@ void UnnecessaryValueParamCheck::handleConstRefFix(const FunctionDecl &Function,
 void UnnecessaryValueParamCheck::handleMoveFix(const ParmVarDecl &Param,
                                                const DeclRefExpr &CopyArgument,
                                                ASTContext &Context) {
-  auto Diag = diag(CopyArgument.getBeginLoc(),
-                   "parameter %0 is passed by value and only copied once; "
-                   "consider moving it to avoid unnecessary copies")
-              << &Param;
+  auto Diag =
+      diag(CopyArgument.getBeginLoc(),
+           "parameter %0 of type %1 is passed by value and only copied once; "
+           "consider moving it to avoid unnecessary copies")
+      << &Param << Param.getType();
   // Do not propose fixes in macros since we cannot place them correctly.
   if (CopyArgument.getBeginLoc().isMacroID())
     return;

clang-tools-extra/clangd/XRefs.cpp

@@ -859,17 +859,47 @@ std::vector<DocumentLink> getDocumentLinks(ParsedAST &AST) {
   for (auto &Inc : AST.getIncludeStructure().MainFileIncludes) {
     if (Inc.Resolved.empty())
       continue;
+
+    // Get the location of the # symbole of the "#include ..." statement
     auto HashLoc = SM.getComposedLoc(SM.getMainFileID(), Inc.HashOffset);
+
+    // get the # Token itself, std::next to get the "include" token and the
+    // first token after (aka "File Token")
     const auto *HashTok = AST.getTokens().spelledTokenContaining(HashLoc);
     assert(HashTok && "got inclusion at wrong offset");
     const auto *IncludeTok = std::next(HashTok);
     const auto *FileTok = std::next(IncludeTok);
-    // FileTok->range is not sufficient here, as raw lexing wouldn't yield
-    // correct tokens for angled filenames. Hence we explicitly use
-    // Inc.Written's length.
-    auto FileRange =
-        syntax::FileRange(SM, FileTok->location(), Inc.Written.length())
-            .toCharRange(SM);
+
+    // The File Token can either be of kind :
+    // "less" if using the "#include <h-char-sequence> new-line" syntax
+    // "string_literal" if using the "#include "q-char-sequence" new-line"
+    // syntax something else (most likely "identifier") if using the "#include
+    // pp-tokens new-line" syntax (#include with macro argument)
+
+    CharSourceRange FileRange;
+
+    if (FileTok->kind() == tok::TokenKind::less) {
+      // FileTok->range would only include the '<' char. Hence we explicitly use
+      // Inc.Written's length.
+      FileRange =
+          syntax::FileRange(SM, FileTok->location(), Inc.Written.length())
+              .toCharRange(SM);
+    } else if (FileTok->kind() == tok::TokenKind::string_literal) {
+      // FileTok->range includes the quotes for string literals so just return
+      // it.
+      FileRange = FileTok->range(SM).toCharRange(SM);
+    } else {
+      // FileTok is the first Token of a macro spelling
+
+      // Report the range of the first token (as it should be the macro
+      // identifier)
+      // We could use the AST to find the last spelled token of the macro and
+      // report a range spanning the full macro expression, but it would require
+      // using token-buffers that are deemed too unstable and crash-prone
+      // due to optimizations in cland
+
+      FileRange = FileTok->range(SM).toCharRange(SM);
+    }
 
     Result.push_back(
         DocumentLink({halfOpenToRange(SM, FileRange),

clang-tools-extra/clangd/unittests/XRefsTests.cpp

@@ -2784,14 +2784,24 @@ TEST(GetNonLocalDeclRefs, All) {
 
 TEST(DocumentLinks, All) {
   Annotations MainCpp(R"cpp(
+      #define HEADER_AA "faa.h"
+      #define HEADER_BB "fbb.h"
+      #define GET_HEADER(X) HEADER_ ## X 
+
       #/*comments*/include /*comments*/ $foo[["foo.h"]] //more comments
       int end_of_preamble = 0;
       #include $bar[[<bar.h>]]
+      #include $AA[[GET_HEADER]](AA) // Some comment !
+      # /* What about */ \
+      include /* multiple line */ \
+      $BB[[GET_HEADER]]( /* statements ? */ \
+      BB /* :) */ )
     )cpp");
 
   TestTU TU;
   TU.Code = std::string(MainCpp.code());
-  TU.AdditionalFiles = {{"foo.h", ""}, {"bar.h", ""}};
+  TU.AdditionalFiles = {
+      {"faa.h", ""}, {"fbb.h", ""}, {"foo.h", ""}, {"bar.h", ""}};
   TU.ExtraArgs = {"-isystem."};
   auto AST = TU.build();
 
@@ -2801,7 +2811,11 @@ TEST(DocumentLinks, All) {
           DocumentLink({MainCpp.range("foo"),
                         URIForFile::canonicalize(testPath("foo.h"), "")}),
           DocumentLink({MainCpp.range("bar"),
-                        URIForFile::canonicalize(testPath("bar.h"), "")})));
+                        URIForFile::canonicalize(testPath("bar.h"), "")}),
+          DocumentLink({MainCpp.range("AA"),
+                        URIForFile::canonicalize(testPath("faa.h"), "")}),
+          DocumentLink({MainCpp.range("BB"),
+                        URIForFile::canonicalize(testPath("fbb.h"), "")})));
 }
 
 } // namespace

clang-tools-extra/docs/ReleaseNotes.rst

@@ -170,6 +170,14 @@ Changes in existing checks
   when the format string is converted to a different type by an implicit
   constructor call.
 
+- Improved :doc:`performance-unnecessary-copy-initialization
+  <clang-tidy/checks/performance/unnecessary-copy-initialization>` by printing
+  the type of the diagnosed variable.
+
+- Improved :doc:`performance-unnecessary-value-param
+  <clang-tidy/checks/performance/unnecessary-value-param>` by printing
+  the type of the diagnosed variable.
+
 - Improved :doc:`portability-template-virtual-member-function
   <clang-tidy/checks/portability/template-virtual-member-function>` check to
   avoid false positives on pure virtual member functions.