[clang-tools-extra] [clang-tidy] Create a check for signed and unsigned integers comparison (PR #113144)
via cfe-commits
cfe-commits at lists.llvm.org
Mon Oct 21 03:16:39 PDT 2024
llvmbot wrote:
<!--LLVM PR SUMMARY COMMENT-->
@llvm/pr-subscribers-clang-tools-extra
Author: None (qt-tatiana)
<details>
<summary>Changes</summary>
- modernize-use-integer-sign-comparison check performs comparisons between signed and unsigned integer types mathematically correct. If C++20 is supported the check replaces integers comparisons to std::cmp_{} functions and add <utility> include.
- add a qt module for qt-related checks.
- qt-integer-sign-comparison check works like an alias of modernize-use-integer-sign-comparison for C++20.
If only C++17 is supported the check replaces integers comparisons to q20::cmp_{} functions and add <QtCore/q20utility.h> include. The check assumes the analysed code is Qt-based code.
---
Patch is 24.72 KiB, truncated to 20.00 KiB below, full version: https://github.com/llvm/llvm-project/pull/113144.diff
14 Files Affected:
- (modified) clang-tools-extra/clang-tidy/CMakeLists.txt (+2)
- (modified) clang-tools-extra/clang-tidy/ClangTidyForceLinker.h (+5)
- (modified) clang-tools-extra/clang-tidy/modernize/CMakeLists.txt (+1)
- (added) clang-tools-extra/clang-tidy/modernize/UseIntegerSignComparisonCheck.cpp (+169)
- (added) clang-tools-extra/clang-tidy/modernize/UseIntegerSignComparisonCheck.h (+46)
- (added) clang-tools-extra/clang-tidy/qt/CMakeLists.txt (+26)
- (added) clang-tools-extra/clang-tidy/qt/QtTidyModule.cpp (+46)
- (modified) clang-tools-extra/docs/ReleaseNotes.rst (+17)
- (modified) clang-tools-extra/docs/clang-tidy/checks/list.rst (+3)
- (added) clang-tools-extra/docs/clang-tidy/checks/modernize/use-integer-sign-comparison.rst (+43)
- (added) clang-tools-extra/docs/clang-tidy/checks/qt/IntegerCrossSignComparison.rst (+64)
- (modified) clang-tools-extra/docs/clang-tidy/index.rst (+1)
- (added) clang-tools-extra/test/clang-tidy/checkers/modernize/use-integer-sign-comparison.cpp (+61)
- (added) clang-tools-extra/test/clang-tidy/checkers/qt/qt-integer-sign-comparison.cpp (+61)
``````````diff
diff --git a/clang-tools-extra/clang-tidy/CMakeLists.txt b/clang-tools-extra/clang-tidy/CMakeLists.txt
index 83a3236131dc93..56ef16a8fb37d6 100644
--- a/clang-tools-extra/clang-tidy/CMakeLists.txt
+++ b/clang-tools-extra/clang-tidy/CMakeLists.txt
@@ -75,6 +75,7 @@ add_subdirectory(objc)
add_subdirectory(openmp)
add_subdirectory(performance)
add_subdirectory(portability)
+add_subdirectory(qt)
add_subdirectory(readability)
add_subdirectory(zircon)
set(ALL_CLANG_TIDY_CHECKS
@@ -99,6 +100,7 @@ set(ALL_CLANG_TIDY_CHECKS
clangTidyOpenMPModule
clangTidyPerformanceModule
clangTidyPortabilityModule
+ clangTidyQtModule
clangTidyReadabilityModule
clangTidyZirconModule
)
diff --git a/clang-tools-extra/clang-tidy/ClangTidyForceLinker.h b/clang-tools-extra/clang-tidy/ClangTidyForceLinker.h
index adde9136ff1dd5..3c777f42520223 100644
--- a/clang-tools-extra/clang-tidy/ClangTidyForceLinker.h
+++ b/clang-tools-extra/clang-tidy/ClangTidyForceLinker.h
@@ -127,6 +127,11 @@ extern volatile int PortabilityModuleAnchorSource;
static int LLVM_ATTRIBUTE_UNUSED PortabilityModuleAnchorDestination =
PortabilityModuleAnchorSource;
+// This anchor is used to force the linker to link the QtClangTidyModule.
+extern volatile int QtClangTidyModuleAnchorSource;
+static int LLVM_ATTRIBUTE_UNUSED QtClangTidyModuleAnchorDestination =
+ QtClangTidyModuleAnchorSource;
+
// This anchor is used to force the linker to link the ReadabilityModule.
extern volatile int ReadabilityModuleAnchorSource;
static int LLVM_ATTRIBUTE_UNUSED ReadabilityModuleAnchorDestination =
diff --git a/clang-tools-extra/clang-tidy/modernize/CMakeLists.txt b/clang-tools-extra/clang-tidy/modernize/CMakeLists.txt
index c919d49b42873a..bab1167fb15ff2 100644
--- a/clang-tools-extra/clang-tidy/modernize/CMakeLists.txt
+++ b/clang-tools-extra/clang-tidy/modernize/CMakeLists.txt
@@ -36,6 +36,7 @@ add_clang_library(clangTidyModernizeModule STATIC
UseEmplaceCheck.cpp
UseEqualsDefaultCheck.cpp
UseEqualsDeleteCheck.cpp
+ UseIntegerSignComparisonCheck.cpp
UseNodiscardCheck.cpp
UseNoexceptCheck.cpp
UseNullptrCheck.cpp
diff --git a/clang-tools-extra/clang-tidy/modernize/UseIntegerSignComparisonCheck.cpp b/clang-tools-extra/clang-tidy/modernize/UseIntegerSignComparisonCheck.cpp
new file mode 100644
index 00000000000000..8f394a14a9b0c4
--- /dev/null
+++ b/clang-tools-extra/clang-tidy/modernize/UseIntegerSignComparisonCheck.cpp
@@ -0,0 +1,169 @@
+//===--- UseIntegerSignComparisonCheck.cpp - clang-tidy -------------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+#include "UseIntegerSignComparisonCheck.h"
+#include "clang/AST/Expr.h"
+#include "clang/ASTMatchers/ASTMatchFinder.h"
+#include "clang/Lex/Lexer.h"
+
+using namespace clang::ast_matchers;
+using namespace clang::ast_matchers::internal;
+
+namespace clang::tidy::modernize {
+
+UseIntegerSignComparisonCheck::UseIntegerSignComparisonCheck(
+ StringRef Name, ClangTidyContext *Context)
+ : ClangTidyCheck(Name, Context),
+ IncludeInserter(Options.getLocalOrGlobal("IncludeStyle",
+ utils::IncludeSorter::IS_LLVM),
+ areDiagsSelfContained()),
+ IsQtApplication(Options.get("IsQtApplication", false)) {}
+
+void UseIntegerSignComparisonCheck::storeOptions(
+ ClangTidyOptions::OptionMap &Opts) {
+ Options.store(Opts, "IsQtApplication", IsQtApplication);
+}
+
+void UseIntegerSignComparisonCheck::registerMatchers(MatchFinder *Finder) {
+ const auto SignedIntCastExpr = intCastExpression(true, "sIntCastExpression");
+ const auto UnSignedIntCastExpr =
+ intCastExpression(false, "uIntCastExpression");
+
+ // Flag all operators "==", "<=", ">=", "<", ">", "!="
+ // that are used between signed/unsigned
+ const auto CompareOperator =
+ expr(binaryOperator(hasAnyOperatorName("==", "<=", ">=", "<", ">", "!="),
+ anyOf(allOf(hasLHS(SignedIntCastExpr),
+ hasRHS(UnSignedIntCastExpr)),
+ allOf(hasLHS(UnSignedIntCastExpr),
+ hasRHS(SignedIntCastExpr)))))
+ .bind("intComparison");
+
+ Finder->addMatcher(CompareOperator, this);
+}
+
+BindableMatcher<clang::Stmt> UseIntegerSignComparisonCheck::intCastExpression(
+ bool IsSigned, const std::string &CastBindName) const {
+ auto IntTypeExpr = expr();
+ if (IsSigned) {
+ IntTypeExpr = expr(hasType(qualType(isInteger(), isSignedInteger())));
+ } else {
+ IntTypeExpr =
+ expr(hasType(qualType(isInteger(), unless(isSignedInteger()))));
+ }
+
+ const auto ImplicitCastExpr =
+ implicitCastExpr(hasSourceExpression(IntTypeExpr)).bind(CastBindName);
+
+ const auto CStyleCastExpr = cStyleCastExpr(has(ImplicitCastExpr));
+ const auto StaticCastExpr = cxxStaticCastExpr(has(ImplicitCastExpr));
+ const auto FunctionalCastExpr = cxxFunctionalCastExpr(has(ImplicitCastExpr));
+
+ return traverse(TK_AsIs, expr(anyOf(ImplicitCastExpr, CStyleCastExpr,
+ StaticCastExpr, FunctionalCastExpr)));
+}
+
+std::string
+UseIntegerSignComparisonCheck::parseOpCode(BinaryOperator::Opcode code) const {
+ switch (code) {
+ case BO_LT:
+ return std::string("cmp_less");
+ case BO_GT:
+ return std::string("cmp_greater");
+ case BO_LE:
+ return std::string("cmp_less_equal");
+ case BO_GE:
+ return std::string("cmp_greater_equal");
+ case BO_EQ:
+ return std::string("cmp_equal");
+ case BO_NE:
+ return std::string("cmp_not_equal");
+ default:
+ return std::string();
+ }
+}
+
+void UseIntegerSignComparisonCheck::registerPPCallbacks(
+ const SourceManager &SM, Preprocessor *PP, Preprocessor *ModuleExpanderPP) {
+ IncludeInserter.registerPreprocessor(PP);
+}
+
+void UseIntegerSignComparisonCheck::check(
+ const MatchFinder::MatchResult &Result) {
+ const auto *SignedCastExpression =
+ Result.Nodes.getNodeAs<ImplicitCastExpr>("sIntCastExpression");
+ const auto *UnSignedCastExpression =
+ Result.Nodes.getNodeAs<ImplicitCastExpr>("uIntCastExpression");
+ assert(SignedCastExpression);
+ assert(UnSignedCastExpression);
+
+ // Ignore the match if we know that the signed int value is not negative.
+ Expr::EvalResult EVResult;
+ if (!SignedCastExpression->isValueDependent() &&
+ SignedCastExpression->getSubExpr()->EvaluateAsInt(EVResult,
+ *Result.Context)) {
+ llvm::APSInt SValue = EVResult.Val.getInt();
+ if (SValue.isNonNegative())
+ return;
+ }
+
+ const auto *BinaryOp =
+ Result.Nodes.getNodeAs<BinaryOperator>("intComparison");
+ if (BinaryOp == nullptr)
+ return;
+
+ auto OpCode = BinaryOp->getOpcode();
+ const auto *LHS = BinaryOp->getLHS()->IgnoreParenImpCasts();
+ const auto *RHS = BinaryOp->getRHS()->IgnoreParenImpCasts();
+ if (LHS == nullptr || RHS == nullptr)
+ return;
+
+ StringRef LHSString(Lexer::getSourceText(
+ CharSourceRange::getTokenRange(LHS->getSourceRange()),
+ *Result.SourceManager, getLangOpts()));
+
+ StringRef RHSString(Lexer::getSourceText(
+ CharSourceRange::getTokenRange(RHS->getSourceRange()),
+ *Result.SourceManager, getLangOpts()));
+
+ DiagnosticBuilder Diag =
+ diag(BinaryOp->getBeginLoc(),
+ "comparison between 'signed' and 'unsigned' integers");
+
+ if (!(getLangOpts().CPlusPlus17 && IsQtApplication) &&
+ !getLangOpts().CPlusPlus20)
+ return;
+
+ std::string CmpNamespace;
+ std::string CmpInclude;
+ if (getLangOpts().CPlusPlus17 && IsQtApplication) {
+ CmpInclude = "<QtCore/q20utility.h>";
+ CmpNamespace = std::string("q20::") + parseOpCode(OpCode);
+ }
+
+ if (getLangOpts().CPlusPlus20) {
+ CmpInclude = "<utility>";
+ CmpNamespace = std::string("std::") + parseOpCode(OpCode);
+ }
+
+ // Use qt-use-integer-sign-comparison when C++17 is available and only for Qt
+ // apps. Prefer modernize-use-integer-sign-comparison when C++20 is available!
+ Diag << FixItHint::CreateReplacement(
+ CharSourceRange::getTokenRange(BinaryOp->getBeginLoc(),
+ BinaryOp->getEndLoc()),
+ StringRef(std::string(CmpNamespace) + std::string("(") +
+ std::string(LHSString) + std::string(", ") +
+ std::string(RHSString) + std::string(")")));
+
+ // If there is no include for cmp_{*} functions, we'll add it.
+ Diag << IncludeInserter.createIncludeInsertion(
+ Result.SourceManager->getFileID(BinaryOp->getBeginLoc()),
+ StringRef(CmpInclude));
+}
+
+} // namespace clang::tidy::modernize
diff --git a/clang-tools-extra/clang-tidy/modernize/UseIntegerSignComparisonCheck.h b/clang-tools-extra/clang-tidy/modernize/UseIntegerSignComparisonCheck.h
new file mode 100644
index 00000000000000..13c6ea9f74ec32
--- /dev/null
+++ b/clang-tools-extra/clang-tidy/modernize/UseIntegerSignComparisonCheck.h
@@ -0,0 +1,46 @@
+//===--- UseIntegerSignComparisonCheck.h - clang-tidy -----------*- 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
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MODERNIZE_USEINTEGERSIGNCOMPARISONCHECK_H
+#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MODERNIZE_USEINTEGERSIGNCOMPARISONCHECK_H
+
+#include "../ClangTidyCheck.h"
+#include "../utils/IncludeInserter.h"
+#include "clang/ASTMatchers/ASTMatchFinder.h"
+
+namespace clang::tidy::modernize {
+
+/// Class detects comparisons between signed and unsigned integers
+///
+/// For the user-facing documentation see:
+/// http://clang.llvm.org/extra/clang-tidy/checks/modernize/use-integer-sign-comparison.html
+class UseIntegerSignComparisonCheck : public ClangTidyCheck {
+public:
+ UseIntegerSignComparisonCheck(StringRef Name, ClangTidyContext *Context);
+
+ void storeOptions(ClangTidyOptions::OptionMap &Opts) override;
+ void registerPPCallbacks(const SourceManager &SM, Preprocessor *PP,
+ Preprocessor *ModuleExpanderPP) override;
+ void registerMatchers(ast_matchers::MatchFinder *Finder) override;
+ void check(const ast_matchers::MatchFinder::MatchResult &Result) override;
+ bool isLanguageVersionSupported(const LangOptions &LangOpts) const override {
+ return LangOpts.CPlusPlus;
+ }
+
+private:
+ ast_matchers::internal::BindableMatcher<clang::Stmt>
+ intCastExpression(bool IsSigned, const std::string &CastBindName) const;
+ std::string parseOpCode(BinaryOperator::Opcode code) const;
+
+ utils::IncludeInserter IncludeInserter;
+ bool IsQtApplication = false;
+};
+
+} // namespace clang::tidy::modernize
+
+#endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_MODERNIZE_USEINTEGERSIGNCOMPARISONCHECK_H
diff --git a/clang-tools-extra/clang-tidy/qt/CMakeLists.txt b/clang-tools-extra/clang-tidy/qt/CMakeLists.txt
new file mode 100644
index 00000000000000..5133c47b3031ee
--- /dev/null
+++ b/clang-tools-extra/clang-tidy/qt/CMakeLists.txt
@@ -0,0 +1,26 @@
+set(LLVM_LINK_COMPONENTS
+ FrontendOpenMP
+ Support
+)
+
+add_clang_library(clangTidyQtModule
+ QtTidyModule.cpp
+
+ LINK_LIBS
+ clangTidy
+ clangTidyModernizeModule
+ clangTidyUtils
+
+ DEPENDS
+ omp_gen
+ ClangDriverOptions
+ )
+
+clang_target_link_libraries(clangTidyQtModule
+ PRIVATE
+ clangAST
+ clangASTMatchers
+ clangBasic
+ clangLex
+ clangTooling
+ )
diff --git a/clang-tools-extra/clang-tidy/qt/QtTidyModule.cpp b/clang-tools-extra/clang-tidy/qt/QtTidyModule.cpp
new file mode 100644
index 00000000000000..3f2c5ec9a4fa21
--- /dev/null
+++ b/clang-tools-extra/clang-tidy/qt/QtTidyModule.cpp
@@ -0,0 +1,46 @@
+//===-- QtTidyModule.cpp - clang-tidy ----------------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+#include "../ClangTidy.h"
+#include "../ClangTidyModule.h"
+#include "../ClangTidyModuleRegistry.h"
+#include "../modernize/UseIntegerSignComparisonCheck.h"
+
+namespace clang::tidy {
+namespace qt {
+
+/// A module containing checks of the C++ Core Guidelines
+class QtClangTidyModule : public ClangTidyModule {
+public:
+ void addCheckFactories(ClangTidyCheckFactories &CheckFactories) override {
+ CheckFactories.registerCheck<modernize::UseIntegerSignComparisonCheck>(
+ "qt-integer-sign-comparison");
+ }
+
+ ClangTidyOptions getModuleOptions() override {
+ ClangTidyOptions Options;
+ ClangTidyOptions::OptionMap &Opts = Options.CheckOptions;
+
+ Opts["qt-integer-sign-comparison."
+ "IsQtApplication"] = "true";
+
+ return Options;
+ }
+};
+
+// Register the LLVMTidyModule using this statically initialized variable.
+static ClangTidyModuleRegistry::Add<QtClangTidyModule>
+ X("qt-module", "Adds checks for the Qt framework Guidelines.");
+
+} // namespace qt
+
+// This anchor is used to force the linker to link in the generated object file
+// and thus register the QtClangTidyModule.
+volatile int QtClangTidyModuleAnchorSource = 0;
+
+} // namespace clang::tidy
diff --git a/clang-tools-extra/docs/ReleaseNotes.rst b/clang-tools-extra/docs/ReleaseNotes.rst
index e8148e06b6af28..ba9922b835d230 100644
--- a/clang-tools-extra/docs/ReleaseNotes.rst
+++ b/clang-tools-extra/docs/ReleaseNotes.rst
@@ -129,6 +129,15 @@ New checks
Finds cases when an uninstantiated virtual member function in a template class
causes cross-compiler incompatibility.
+- New :doc:`modernize-use-integer-sign-comparison
+ <clang-tidy/checks/modernize/use-integer-sign-comparison>` check.
+
+ Performs comparisons between signed and unsigned integer types
+ mathematically correct. If C++20 is supported a fix-it replaces
+ integers comparisons to
+ std::cmp_{equal,not_equal,{less,greater}{,_equal}} functions.
+
+
New check aliases
^^^^^^^^^^^^^^^^^
@@ -136,6 +145,14 @@ New check aliases
:doc:`bugprone-sizeof-expression
<clang-tidy/checks/bugprone/sizeof-expression>` was added.
+- New alias :doc:`qt-integer-sign-comparison
+ <clang-tidy/checks/qt/integer-sign-comparison>` to
+ doc:`modernize-use-integer-sign-comparison
+ <clang-tidy/checks/modernize/use-integer-sign-comparison>` check.
+ If C++17 is supported, the fix-it replaces integers comparisons to
+ q20::cmp_{equal,not_equal,{less,greater}{,_equal}} functions.
+ The check assumes the analysed code is Qt-based code.
+
Changes in existing checks
^^^^^^^^^^^^^^^^^^^^^^^^^^
diff --git a/clang-tools-extra/docs/clang-tidy/checks/list.rst b/clang-tools-extra/docs/clang-tidy/checks/list.rst
index 0082234f5ed31b..f1b9f032c76615 100644
--- a/clang-tools-extra/docs/clang-tidy/checks/list.rst
+++ b/clang-tools-extra/docs/clang-tidy/checks/list.rst
@@ -30,6 +30,7 @@ Clang-Tidy Checks
openmp/*
performance/*
portability/*
+ qt/*
readability/*
zircon/*
@@ -300,6 +301,7 @@ Clang-Tidy Checks
:doc:`modernize-use-emplace <modernize/use-emplace>`, "Yes"
:doc:`modernize-use-equals-default <modernize/use-equals-default>`, "Yes"
:doc:`modernize-use-equals-delete <modernize/use-equals-delete>`, "Yes"
+ :doc:`modernize-use-integer-sign-comparison <modernize/use-integer-sign-comparison>`, "Yes"
:doc:`modernize-use-nodiscard <modernize/use-nodiscard>`, "Yes"
:doc:`modernize-use-noexcept <modernize/use-noexcept>`, "Yes"
:doc:`modernize-use-nullptr <modernize/use-nullptr>`, "Yes"
@@ -348,6 +350,7 @@ Clang-Tidy Checks
:doc:`portability-restrict-system-includes <portability/restrict-system-includes>`, "Yes"
:doc:`portability-simd-intrinsics <portability/simd-intrinsics>`,
:doc:`portability-std-allocator-const <portability/std-allocator-const>`,
+ :doc:`qt-integer-sign-comparison <qt/integer-sign-comparison>`, "Yes"
:doc:`portability-template-virtual-member-function <portability/template-virtual-member-function>`,
:doc:`readability-avoid-const-params-in-decls <readability/avoid-const-params-in-decls>`, "Yes"
:doc:`readability-avoid-nested-conditional-operator <readability/avoid-nested-conditional-operator>`,
diff --git a/clang-tools-extra/docs/clang-tidy/checks/modernize/use-integer-sign-comparison.rst b/clang-tools-extra/docs/clang-tidy/checks/modernize/use-integer-sign-comparison.rst
new file mode 100644
index 00000000000000..21bee8ec16b17d
--- /dev/null
+++ b/clang-tools-extra/docs/clang-tidy/checks/modernize/use-integer-sign-comparison.rst
@@ -0,0 +1,43 @@
+.. title:: clang-tidy - modernize-use-integer-sign-comparison
+
+modernize-use-integer-sign-comparison
+=====================================
+
+The check detects comparison between signed and unsigned integer values.
+If C++20 is supported, the check suggests a fix-it.
+
+Examples of fixes created by the check:
+
+.. code-block:: c++
+
+ uint func(int bla)
+ {
+ uint result;
+ if (result == bla)
+ return 0;
+
+ return 1;
+ }
+
+becomes
+
+.. code-block:: c++
+
+ #include <utility>
+
+ uint func(int bla)
+ {
+ uint result;
+ if (std::cmp_equal(result, bla))
+ return 0;
+
+ return 1;
+ }
+
+Options
+-------
+
+.. option:: IncludeStyle
+
+ A string specifying which include-style is used, `llvm` or `google`. Default
+ is `llvm`.
diff --git a/clang-tools-extra/docs/clang-tidy/checks/qt/IntegerCrossSignComparison.rst b/clang-tools-extra/docs/clang-tidy/checks/qt/IntegerCrossSignComparison.rst
new file mode 100644
index 00000000000000..1f9e1089826ce9
--- /dev/null
+++ b/clang-tools-extra/docs/clang-tidy/checks/qt/IntegerCrossSignComparison.rst
@@ -0,0 +1,64 @@
+.. title:: clang-tidy - qt-integer-sign-comparison
+
+qt-integer-sign-comparison
+=============================
+
+The check detects comparison between signed and unsigned integer values.
+If C++20 is supported, the check suggests a std related fix-it.
+If C++17 is supported, the check suggests a Qt related fix-it.
+
+Examples of fixes created by the check:
+
+.. code-block:: c++
+
+ uint func(int bla)
+ {
+ uint result;
+ if (result == bla)
+ return 0;
+
+ return 1;
+ }
+
+in C++17 becomes
+
+.. code-block:: c++
+
+ <QtCore/q20utility.h>
+
+ uint func(int bla)
+ {
+ uint result;
+ if (q20::cmp_equal(result, bla))
+ return 0;
+
+ return 1;
+ }
+
+in C++20 becomes
+
+.. code-block:: c++
+
+ #include <utility>
+
+ uint func(int bla)
+ {
+ uint result;
+ if (std::cmp_equal(result, bla))
+ return 0;
+
+ return 1;
+ }
+
+Options
+-------
+
+.. option:: IncludeStyle
+
+ A string specifying which include-style is used, `llvm` or `google`. Default
+ is `llvm`.
+
+.. option:: IsQtApplication
+
+ When `true` (default `false`), then it is assumed that the code being analyzed
+ is the Qt-based code.
diff --git a/clang-tools-extra/docs/clang-tidy/index.rst b/clang-tools-extra/docs/clang-tidy/index.rst
index a4233d5d8e2694..9663ed03c8734d 100644
--- a/clang-tools-extra/docs/clang-tidy/index.rst
+++ b/clang-tools-extra/docs/clang-tidy/index.rst
@@ -84,6 +84,7 @@ Name prefix Description
``performance-`` Checks that target performance-related issues.
``portability-`` Checks that target portability-related issues that don't
relate to any particular coding style.
+``qt-`` Checks related to Qt framework.
``readability-`` Checks that target readability-related issues that don't
relate to any particular coding style.
``zircon-`` Checks related to Zircon kernel coding conventions.
diff --git a/clang-tools-extra/test/clang-tidy/checkers/modernize/use-integer-sign-comparison.cpp b/clang-tools-extra/test/clang-tidy/checkers/modernize/use-integer-sign-comparison.cpp
new file mode 100644
index 00000000000000..b580e2dfc6731d
--- /dev/null
+++ b/c...
[truncated]
``````````
</details>
https://github.com/llvm/llvm-project/pull/113144
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