llvm-project

351d900e - [llvm][RISCV] Use zilsd for callee-saved register spill/restore on RV32 (#184794)

[llvm][RISCV] Use zilsd for callee-saved register spill/restore on RV32 (#184794) When the Zilsd extension is enabled on RV32, use SD_RV32/LD_RV32 instructions to spill and restore pairs of callee-saved GPRs instead of saving 2 separate 32 bit data. Note that we need to ensure stack slot to be aligned.