[llvm-bugs] [Bug 235271] [clang][NVPTX][DAGCombiner] `__builtin_clzll(x | 1) >> 5` is folded to 0: visitSRL's `srl (ctlz x), log2(BW)` fold uses the i32 result width of NVPTX's ctlz of an i64 value

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Sat Oct 24 03:40:32 PDT 2026

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