Optimize more redundant kotlin/jvm/internal/Refs

The number of initializations of the `value` field before the live range
begins does not really matter so long as we insert a write of a default
value to the local if there were none.

compiler/testData/codegen/bytecodeText/localInitializationLVT/boxing.kt

@@ -1,6 +1,3 @@
-// IGNORE_BACKEND: JVM_IR
-// TODO KT-36648 Captured variables not optimized in JVM_IR
-
 fun test(): java.lang.Integer {
     val c: java.lang.Integer
     run {
@@ -10,4 +7,9 @@ fun test(): java.lang.Integer {
 }
 
 // 2 ASTORE 0
-// 1 LOCALVARIABLE c Ljava/lang/Integer; L1 L.* 0
+
+// JVM_TEMPLATES
+// 1 LOCALVARIABLE c Ljava/lang/Integer;
+
+// JVM_IR_TEMPLATES
+// 1 LOCALVARIABLE c Ljava/lang/Object;

compiler/testData/codegen/bytecodeText/localInitializationLVT/boxingVar.kt

@@ -6,5 +6,5 @@ fun test(): java.lang.Integer {
     return c
 }
 
-// 1 ASTORE 0
-// 1 LOCALVARIABLE c Lkotlin/jvm/internal/Ref\$ObjectRef; L1 L.* 0
+// 2 ASTORE 0
+// 1 LOCALVARIABLE c Ljava/lang/Object;

compiler/testData/codegen/bytecodeText/localInitializationLVT/generics.kt

@@ -1,5 +1,3 @@
-// IGNORE_BACKEND: JVM_IR
-
 inline fun <reified T> foo(default: T): T {
     val t: T
     run {
@@ -13,6 +11,6 @@ fun test() {
 }
 
 // two in foo and two in test
-
 // 4 ASTORE 2
-// 1 LOCALVARIABLE t\$iv Ljava/lang/Object; L3 L.* 2
+// 1 LOCALVARIABLE t Ljava/lang/Object;
+// 1 LOCALVARIABLE t\$iv Ljava/lang/Object;

compiler/testData/codegen/bytecodeText/localInitializationLVT/genericsVar.kt

@@ -1,4 +1,3 @@
-
 inline fun <reified T> foo(default: T): T {
     var t: T
     run {
@@ -12,6 +11,6 @@ fun test() {
 }
 
 // two in foo and two in test
-
-// 2 ASTORE 2
-// 1 LOCALVARIABLE t\$iv Lkotlin/jvm/internal/Ref\$ObjectRef; L3 L.* 2
+// 4 ASTORE 2
+// 1 LOCALVARIABLE t Ljava/lang/Object;
+// 1 LOCALVARIABLE t\$iv Ljava/lang/Object;

compiler/testData/codegen/bytecodeText/localInitializationLVT/inlineClass.kt

@@ -1,5 +1,5 @@
 // IGNORE_BACKEND: JVM_IR
-// TODO KT-36648 Captured variables not optimized in JVM_IR
+// TODO: JVM_IR uses ObjectRef instead of IntRef for the value
 
 fun test(): UInt {
     val c: UInt
@@ -10,4 +10,4 @@ fun test(): UInt {
 }
 
 // 2 ISTORE 0
-// 1 LOCALVARIABLE c I L1 L.* 0
+// 1 LOCALVARIABLE c I

compiler/testData/codegen/bytecodeText/localInitializationLVT/inlineClassVar.kt

@@ -1,5 +1,5 @@
 // IGNORE_BACKEND: JVM_IR
-// TODO KT-36648 Captured variables not optimized in JVM_IR
+// TODO: JVM_IR uses ObjectRef instead of IntRef for the value
 
 fun test(): UInt {
     var c: UInt
@@ -9,5 +9,5 @@ fun test(): UInt {
     return c
 }
 
-// 1 ASTORE 0
-// 1 LOCALVARIABLE c Lkotlin/jvm/internal/Ref\$IntRef; L1 L.* 0
+// 2 ISTORE 0
+// 1 LOCALVARIABLE c I

compiler/testData/codegen/bytecodeText/localInitializationLVT/lateinit.kt

@@ -1,6 +1,3 @@
-// IGNORE_BACKEND: JVM_IR
-// TODO KT-36648 Captured variables not optimized in JVM_IR
-
 fun test(): Char {
     lateinit var c: Any
     run {
@@ -9,5 +6,11 @@ fun test(): Char {
     return c as Char
 }
 
+// 1 LOCALVARIABLE c Ljava/lang/Object;
+
+// JVM_TEMPLATES
 // 2 ASTORE 0
-// 1 LOCALVARIABLE c Ljava/lang/Object; L1 L.* 0
+
+// JVM_IR_TEMPLATES
+// 3 ASTORE 0
+// *two* of them are after the start of c's live range

compiler/testData/codegen/bytecodeText/localInitializationLVT/run.kt

@@ -1,6 +1,3 @@
-// IGNORE_BACKEND: JVM_IR
-// TODO KT-36648 Captured variables not optimized in JVM_IR
-
 fun test(): Char {
     val c: Char
     run {
@@ -12,4 +9,4 @@ fun test(): Char {
 
 // The first on declaration, the other on initialization
 // 2 ISTORE 0
-// 1 LOCALVARIABLE c C L1 L.* 0
+// 1 LOCALVARIABLE c C

compiler/testData/codegen/bytecodeText/localInitializationLVT/runVar.kt

@@ -6,5 +6,5 @@ fun test(): Char {
     return c
 }
 
-// 1 ASTORE 0
-// 1 LOCALVARIABLE c Lkotlin/jvm/internal/Ref\$CharRef; L1 L.* 0
+// 2 ISTORE 0
+// 1 LOCALVARIABLE c C