BPF: extend JSET optimisation to cover select IR pattern#2

0xull wants to merge 1 commit intoblueshift-gg:upstream-gallery-21blueshift-gg/llvm-project:upstream-gallery-21from

0xull:jset-select-pattern-optimisation0xull/llvm-project:jset-select-pattern-optimisationCopy head branch name to clipboard