optimize: dedup consts

src/compile.rs

@@ -1,6 +1,5 @@
 use crate::bytecode::*;
 use crate::ir;
-use crate::ty::internal::Const;
 
 pub struct Compiler {
     opcodes: Vec<OpCode>,
@@ -23,7 +22,8 @@ pub fn compile(downgraded: ir::Downgraded) -> Program {
             })
             .collect(),
         symbols: downgraded.symbols,
-        symmap: downgraded.symmap
+        symmap: downgraded.symmap,
+        consts: downgraded.consts
     }
 }
 
@@ -79,7 +79,7 @@ impl<T: Compile> CompileWithLength for T {
 
 impl Compile for ir::Const {
     fn compile(self, comp: &mut Compiler) {
-        comp.push(OpCode::Const { value: self.value });
+        comp.push(OpCode::Const { idx: self.idx });
     }
 }