Extra Clang Tools 12.0.0 (In-Progress) Release Notes

Written by the LLVM Team

Introduction

This document contains the release notes for the Extra Clang Tools, part of the Clang release 12.0.0. Here we describe the status of the Extra Clang Tools in some detail, including major improvements from the previous release and new feature work. All LLVM releases may be downloaded from the LLVM releases web site.

For more information about Clang or LLVM, including information about the latest release, please see the Clang Web Site or the LLVM Web Site.

Note that if you are reading this file from a Git checkout or the main Clang web page, this document applies to the next release, not the current one. To see the release notes for a specific release, please see the releases page.

What's New in Extra Clang Tools 12.0.0?

Some of the major new features and improvements to Extra Clang Tools are listed here. Generic improvements to Extra Clang Tools as a whole or to its underlying infrastructure are described first, followed by tool-specific sections.

Major New Features

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Improvements to clangd

The improvements are...

Improvements to clang-doc

The improvements are...

Improvements to clang-query

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Improvements to clang-rename

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Improvements to clang-tidy

• Checks that allow configuring names of headers to include now support wrapping the include in angle brackets to create a system include. For example, :doc:`cppcoreguidelines-init-variables <clang-tidy/checks/cppcoreguidelines-init-variables>` and :doc:`modernize-make-unique <clang-tidy/checks/modernize-make-unique>`.

New modules

• New altera module.

  Includes checks related to OpenCL for FPGA coding guidelines, based on the Altera SDK for OpenCL: Best Practices Guide.

New checks

• New :doc:`altera-struct-pack-align <clang-tidy/checks/altera-struct-pack-align>` check.

  Finds structs that are inefficiently packed or aligned, and recommends packing and/or aligning of said structs as needed.

• New :doc:`cppcoreguidelines-prefer-member-initializer <clang-tidy/checks/cppcoreguidelines-prefer-member-initializer>` check.

  Finds member initializations in the constructor body which can be placed into the initialization list instead.

• New :doc:`bugprone-misplaced-pointer-arithmetic-in-alloc <clang-tidy/checks/bugprone-misplaced-pointer-arithmetic-in-alloc>` check.

• New :doc:`bugprone-redundant-branch-condition <clang-tidy/checks/bugprone-redundant-branch-condition>` check.

  Finds condition variables in nested if statements that were also checked in the outer if statement and were not changed.

• New :doc:`readability-function-cognitive-complexity <clang-tidy/checks/readability-function-cognitive-complexity>` check.

  Flags functions with Cognitive Complexity metric exceeding the configured limit.

Changes in existing checks

• Improved :doc:`readability-identifier-naming <clang-tidy/checks/readability-identifier-naming>` check.

  Added an option GetConfigPerFile to support including files which use different naming styles.

Improvements to include-fixer

The improvements are...

Improvements to clang-include-fixer

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Improvements to modularize

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Improvements to pp-trace

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Clang-tidy visual studio plugin