[InstCombine][FP] Fix nnan preservation for transform fcmp + sel => fmax/fmin#117977

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

rajatbajpai:dev/rbajpai/upstream-fix-fmax-fmin-fp-xfrmrajatbajpai/llvm-project:dev/rbajpai/upstream-fix-fmax-fmin-fp-xfrmCopy head branch name to clipboard