cranelift: bump regalloc.rs to 0.0.24 and adapt to latest API changes;

cranelift/codegen/src/machinst/mod.rs

@@ -138,7 +138,7 @@ pub trait MachInst: Clone + Debug {
 
     /// Map virtual registers to physical registers using the given virt->phys
     /// maps corresponding to the program points prior to, and after, this instruction.
-    fn map_regs(&mut self, maps: &RegUsageMapper);
+    fn map_regs<RUM: RegUsageMapper>(&mut self, maps: &RUM);
 
     /// If this is a simple move, return the (source, destination) tuple of registers.
     fn is_move(&self) -> Option<(Writable<Reg>, Reg)>;

cranelift/codegen/src/machinst/vcode.rs

@@ -457,7 +457,7 @@ impl<I: VCodeInst> RegallocFunction for VCode<I> {
         insn.get_regs(collector)
     }
 
-    fn map_regs(insn: &mut I, mapper: &RegUsageMapper) {
+    fn map_regs<RUM: RegUsageMapper>(insn: &mut I, mapper: &RUM) {
         insn.map_regs(mapper);
     }