llvm-project

dfab4fbb - [RISCV] Add TunePreferAscendingLoadStore for SpacemiT X60 LD/ST fusion (#186967)

[RISCV] Add TunePreferAscendingLoadStore for SpacemiT X60 LD/ST fusion (#186967) Add a tune feature that reverses the callee-saved register spill/restore order so that addresses are ascending, enabling LD/ST fusion on processors like SpacemiT X60. Co-authored-by: LiqinWeng <liqin.weng@spacemit.com> Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>