store and load decimal numbers

compiler/gen_wasm/src/backend.rs

@@ -544,6 +544,21 @@ impl<'a> WasmBackend<'a> {
             }
 
             StoredValue::StackMemory { location, .. } => match lit {
+                Literal::Decimal(decimal) => {
+                    let (local_id, offset) =
+                        location.local_and_offset(self.storage.stack_frame_pointer);
+
+                    let lower_bits = decimal.0 as i64;
+                    let upper_bits = (decimal.0 >> 64) as i64;
+
+                    self.code_builder.get_local(local_id);
+                    self.code_builder.i64_const(lower_bits);
+                    self.code_builder.i64_store(Align::Bytes8, offset);
+
+                    self.code_builder.get_local(local_id);
+                    self.code_builder.i64_const(upper_bits);
+                    self.code_builder.i64_store(Align::Bytes8, offset + 8);
+                }
                 Literal::Str(string) => {
                     let (local_id, offset) =
                         location.local_and_offset(self.storage.stack_frame_pointer);

compiler/test_gen/src/gen_num.rs

@@ -358,7 +358,7 @@ fn u8_hex_int_alias() {
 }
 
 #[test]
-#[cfg(any(feature = "gen-llvm"))]
+#[cfg(any(feature = "gen-llvm", feature = "gen-wasm"))]
 fn dec_float_alias() {
     assert_evals_to!(
         indoc!(