llvm-project

42742394 - [X86] combineVTRUNCSAT - don't split 128-bit concatenated vectors when folding to PACKSS/US (#194347)

[X86] combineVTRUNCSAT - don't split 128-bit concatenated vectors when folding to PACKSS/US (#194347) If the VTRUNCS/US node has 128-bit src and dst types, then ensure we don't split into sub-128-bit vectors - just treat it as padded with zeros to match VTRUNC behaviour. Fixes #194344