llvm/llvm-project

[ARM][AArch64] Remove CLS special handling and use generic ISD::CTLS node

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#174.337 aperta il 4 gen 2026

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Once #173417 has landed, the arm/aarch64 intrinsics (int_arm_mve_vcls/int_arm_neon_vcls/int_aarch64_cls/int_aarch64_cls64 etc.) can be expanded to ISD::CTLS in DAG/GISel and the remaining patterns/setOperationAction calls converted to use ISD::CTLS

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