Rewrite constexpr-vectors test to use element access

[tbaederr]

See this comment:

llvm-project/clang/test/SemaCXX/constexpr-vectors.cpp

Lines 3 to 7 in 1139dee

	// FIXME: Unfortunately there is no good way to validate that our values are
	// correct since Vector types don't have operator [] implemented for constexpr.
	// Instead, we need to use filecheck to ensure the emitted IR is correct. Once
	// someone implements array subscript operator for these types as constexpr,
	// this test should modified to jsut use static asserts.

Now that #101126 was merged, we can rewrite this to use [] element access on the vectors and don't need to go through codegen.

[llvmbot]

Hi!

This issue may be a good introductory issue for people new to working on LLVM. If you would like to work on this issue, your first steps are:

1. Check that no other contributor has already been assigned to this issue. If you believe that no one is actually working on it despite an assignment, ping the person. After one week without a response, the assignee may be changed.
2. In the comments of this issue, request for it to be assigned to you, or just create a pull request after following the steps below. Mention this issue in the description of the pull request.
3. Fix the issue locally.
4. Run the test suite locally. Remember that the subdirectories under test/ create fine-grained testing targets, so you can e.g. use make check-clang-ast to only run Clang's AST tests.
5. Create a Git commit.
6. Run git clang-format HEAD~1 to format your changes.
7. Open a pull request to the upstream repository on GitHub. Detailed instructions can be found in GitHub's documentation. Mention this issue in the description of the pull request.

If you have any further questions about this issue, don't hesitate to ask via a comment in the thread below.

[llvmbot]

@llvm/issue-subscribers-good-first-issue

Author: Timm Baeder (tbaederr)

See this comment: https://github.com/llvm/llvm-project/blob/1139dee910c45cfdd4a6066b22addef585e04032/clang/test/SemaCXX/constexpr-vectors.cpp#L3-L7

Now that #101126 was merged, we can rewrite this to use [] element access on the vectors and don't need to go through codegen.

[llvmbot]

@llvm/issue-subscribers-clang-frontend

Author: Timm Baeder (tbaederr)

See this comment: https://github.com/llvm/llvm-project/blob/1139dee910c45cfdd4a6066b22addef585e04032/clang/test/SemaCXX/constexpr-vectors.cpp#L3-L7

Now that #101126 was merged, we can rewrite this to use [] element access on the vectors and don't need to go through codegen.

[AmrDeveloper]

Hello @tbaederr,

I can work on it as my first issue, can you please assign it to me

Thank you