[LV] Disable MinBW when the entire chain are cast/load instructions.#117330

ElvisWang123 wants to merge 3 commits intollvm:mainllvm/llvm-project:mainfrom

ElvisWang123:fix-widen-cast-cost-mistmatchElvisWang123/llvm-project:fix-widen-cast-cost-mistmatchCopy head branch name to clipboard