[DAGCombiner] Handle type-promoted constants in UDIV exact lowering#169949

SavchenkoValeriy merged 2 commits intollvm:mainllvm/llvm-project:mainfrom

SavchenkoValeriy:vector-udiv-exact-by-const-loweringSavchenkoValeriy/llvm-project:vector-udiv-exact-by-const-loweringCopy head branch name to clipboard