Imported Upstream version 6.10.0.49

Former-commit-id: 1d6753294b2993e1fbf92de9366bb9544db4189b

external/llvm-project/clang-tools-extra/docs/clang-tidy/checks/misc-redundant-expression.rst

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+.. title:: clang-tidy - misc-redundant-expression
+
+misc-redundant-expression
+=========================
+
+Detect redundant expressions which are typically errors due to copy-paste.
+
+Depending on the operator expressions may be
+
+- redundant,
+
+- always ``true``,
+
+- always ``false``,
+
+- always a constant (zero or one).
+
+Examples:
+
+.. code-block:: c++
+
+  ((x+1) | (x+1))             // (x+1) is redundant
+  (p->x == p->x)              // always true
+  (p->x < p->x)               // always false
+  (speed - speed + 1 == 12)   // speed - speed is always zero