[clang] [clang] Add support for new loop attribute [[clang::code_align()]] (PR #70762)

[Erich Keane via cfe-commits]

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+// RUN: %clang_cc1 -fsyntax-only -verify=expected,c-local %s
+// RUN: %clang_cc1 -fsyntax-only -verify=expected,cpp-local -pedantic -x c++ -std=c++11 %s 
+
+// Add diagnostics tests for Loop attribute: [[clang::code_align()]].
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erichkeane wrote:

This comment doesn't really add anything

https://github.com/llvm/llvm-project/pull/70762