Index: lib/Target/RISCV/RISCVFrameLowering.cpp
===================================================================
--- lib/Target/RISCV/RISCVFrameLowering.cpp
+++ lib/Target/RISCV/RISCVFrameLowering.cpp
@@ -149,7 +149,7 @@
   // FIXME: assumes exactly one instruction is used to restore each
   // callee-saved register.
   MachineBasicBlock::iterator LastFrameDestroy = MBBI;
-  std::advance(LastFrameDestroy, -MFI.getCalleeSavedInfo().size());
+  std::advance(LastFrameDestroy, -(int64_t)MFI.getCalleeSavedInfo().size());
 
   uint64_t StackSize = MFI.getStackSize();