[LoongArch] Suppress the unnecessary extensions for arguments in makeLibCall

Reviewed By: SixWeining, heiher

Pull Request: https://github.com/llvm/llvm-project/pull/92376

[LoongArch] Use sign extend for i32 arguments in makeLibCall on LA64

The 32 bits arguments and returns on LA64 are always sign extended to
i64. So we should be taking this into account around libcal

[LoongArch] Use sign extend for i32 arguments in makeLibCall on LA64

The 32 bits arguments and returns on LA64 are always sign extended to
i64. So we should be taking this into account around libcalls.

Reviewed By: heiher, SixWeining

Pull Request: https://github.com/llvm/llvm-project/pull/92375

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[LoongArch] Pre-commit test for lib call auguments extension

Reviewed By: SixWeining

Pull Request: https://github.com/llvm/llvm-project/pull/92374