[RISCV] Default to MicroOpBufferSize = 1 for scheduling purposes#126608

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

preames:pr-riscv-generic-schedule-for-regpressurepreames/llvm-project:pr-riscv-generic-schedule-for-regpressureCopy head branch name to clipboard