refactor: move DataValue from cranelift-reader to cranelift-codegen

This is no change to functionality; the move is necessary in order to return InstructionData immediates in a structure way (see next commit).

cranelift/interpreter/src/frame.rs

@@ -1,7 +1,7 @@
 //! Implements a call frame (activation record) for the Cranelift interpreter.
 
+use cranelift_codegen::data_value::DataValue;
 use cranelift_codegen::ir::{Function, Value as ValueRef};
-use cranelift_reader::DataValue;
 use log::trace;
 use std::collections::HashMap;
 
@@ -78,9 +78,9 @@ impl<'a> Frame<'a> {
 #[cfg(test)]
 mod tests {
     use super::*;
+    use cranelift_codegen::data_value::DataValue;
     use cranelift_codegen::ir::InstBuilder;
     use cranelift_frontend::{FunctionBuilder, FunctionBuilderContext};
-    use cranelift_reader::DataValue;
 
     /// Build an empty function with a single return.
     fn empty_function() -> Function {

cranelift/interpreter/src/interpreter.rs

@@ -5,12 +5,12 @@
 use crate::environment::Environment;
 use crate::frame::Frame;
 use crate::interpreter::Trap::InvalidType;
+use cranelift_codegen::data_value::{DataValue, DataValueCastFailure};
 use cranelift_codegen::ir::condcodes::IntCC;
 use cranelift_codegen::ir::{
     Block, FuncRef, Function, Inst, InstructionData, InstructionData::*, Opcode, Opcode::*, Type,
     Value as ValueRef, ValueList,
 };
-use cranelift_reader::{DataValue, DataValueCastFailure};
 use log::trace;
 use std::ops::{Add, Div, Mul, Sub};
 use thiserror::Error;