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bf3deccdad
Rust passes a *const &OperandBundleDef to these APIs, usually from a Vec<&OperandBundleDef> or so. Previously we were dereferencing that pointer and passing it to the ArrayRef constructor with some length (N). This meant that if the length was 0, we were dereferencing a pointer to nowhere, and if the length was >1 then loading the *second* element somewhere in LLVM would've been reading past the end. Since Rust can't hold OperandBundleDef by-value we're forced to indirect through a vector that copies out the OperandBundleDefs from the by-reference list on the Rust side in order to match the LLVM expected API.