message: Add missing `emit_mov` variants.
diff: @@ -301,6 +301,10 @@ impl Emitter for Assembler {
  assert!(disp >= 0);
  dynasm!(self ; str W(map_gpr(src).x()), [ X(map_gpr(dst).x()), disp as u32 ] );
  }
  + (Size::S32, Location::Imm32(x), Location::Memory(dst, disp)) => {
  + assert!(disp >= 0);
  + dynasm!(self ; b >after; data: ; .dword x as i32; after: ; ldr w_tmp1, <data; str w_tmp1, [ X(map_gpr(dst).x()), disp as u32 ] );
  + }
  (Size::S32, Location::Imm32(x), Location::GPR(dst)) => {
  dynasm!(self ; b >after; data: ; .dword x as i32; after: ; ldr W(map_gpr(dst).x()), <data);
  }
  @@ -315,6 +319,10 @@ impl Emitter for Assembler {
  assert!(disp >= 0);
  dynasm!(self ; str X(map_gpr(src).x()), [ X(map_gpr(dst).x()), disp as u32 ] );
  }
  + (Size::S64, Location::Imm32(x), Location::Memory(dst, disp)) => {
  + assert!(disp >= 0);
  + dynasm!(self ; b >after; data: ; .qword x as i64; after: ; ldr x_tmp1, <data; str x_tmp1, [ X(map_gpr(dst).x()), disp as u32 ] );
  + }
  (Size::S64, Location::Imm32(x), Location::GPR(dst)) => {
  dynasm!(self ; b >after; data: ; .qword x as i64; after: ; ldr X(map_gpr(dst).x()), <data);
  }
  