[backend-IRC]初步构建新的寄存器分配器

src/backend/RISCv64/CMakeLists.txt

@@ -8,6 +8,7 @@ add_library(riscv64_backend_lib STATIC
     Handler/CalleeSavedHandler.cpp
     Handler/LegalizeImmediates.cpp
     Handler/PrologueEpilogueInsertion.cpp
+    Handler/EliminateFrameIndices.cpp
     Optimize/Peephole.cpp
     Optimize/PostRA_Scheduler.cpp
     Optimize/PreRA_Scheduler.cpp