[clang-tools-extra] [clang-tidy] Add new check `readability-use-numeric-limits` (PR #127430)

[Katherine Whitlock via cfe-commits]

================
@@ -0,0 +1,164 @@
+//===--- UseNumericLimitsCheck.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 "UseNumericLimitsCheck.h"
+#include "clang/AST/ASTContext.h"
+#include "clang/ASTMatchers/ASTMatchFinder.h"
+#include "clang/Lex/Preprocessor.h"
+#include <cmath>
+#include <limits>
+
+using namespace clang::ast_matchers;
+
+namespace clang::tidy::readability {
+
+UseNumericLimitsCheck::UseNumericLimitsCheck(StringRef Name,
+                                             ClangTidyContext *Context)
+    : ClangTidyCheck(Name, Context),
+      SignedConstants{
+          {std::numeric_limits<int8_t>::min(),
+           "std::numeric_limits<int8_t>::min()"},
+          {std::numeric_limits<int8_t>::max(),
+           "std::numeric_limits<int8_t>::max()"},
+          {std::numeric_limits<int16_t>::min(),
+           "std::numeric_limits<int16_t>::min()"},
+          {std::numeric_limits<int16_t>::max(),
+           "std::numeric_limits<int16_t>::max()"},
+          {std::numeric_limits<int32_t>::min(),
+           "std::numeric_limits<int32_t>::min()"},
+          {std::numeric_limits<int32_t>::max(),
+           "std::numeric_limits<int32_t>::max()"},
+          {std::numeric_limits<int64_t>::min(),
+           "std::numeric_limits<int64_t>::min()"},
+          {std::numeric_limits<int64_t>::max(),
+           "std::numeric_limits<int64_t>::max()"},
+
----------------
stellar-aria wrote:

clang-format did not affect this, so I removed the line manually

https://github.com/llvm/llvm-project/pull/127430