JS: disable TemporaryAssignmentElimination, fix KT-15512

compiler/testData/codegen/box/controlStructures/kt9022Return.kt

@@ -1,6 +1,3 @@
-// TODO: muted automatically, investigate should it be ran for JS or not
-// IGNORE_BACKEND: JS
-
 fun testOr(b: Boolean): Boolean {
     return b || return !b;
 }

js/js.inliner/src/org/jetbrains/kotlin/js/inline/clean/FunctionPostProcessor.kt

@@ -20,7 +20,7 @@ import org.jetbrains.kotlin.js.backend.ast.JsFunction
 
 class FunctionPostProcessor(root: JsFunction) {
     val optimizations = listOf(
-        { TemporaryAssignmentElimination(root.body).apply() },
+        //{ TemporaryAssignmentElimination(root.body).apply() },
         { RedundantLabelRemoval(root.body).apply() },
         { WhileConditionFolding(root.body).apply() },
         { DoWhileGuardElimination(root.body).apply() },

js/js.tests/test/org/jetbrains/kotlin/js/test/optimizer/TemporaryAssignmentEliminationTest.kt

@@ -16,8 +16,10 @@
 
 package org.jetbrains.kotlin.js.test.optimizer
 
+import org.junit.Ignore
 import org.junit.Test
 
+@Ignore
 class TemporaryAssignmentEliminationTest : BasicOptimizerTest("temporary-assignment") {
     @Test fun assignment() = box()
 

js/js.tests/test/org/jetbrains/kotlin/js/test/semantics/JsCodegenBoxTestGenerated.java

@@ -4971,13 +4971,7 @@ public class JsCodegenBoxTestGenerated extends AbstractJsCodegenBoxTest {
         @TestMetadata("kt9022Return.kt")
         public void testKt9022Return() throws Exception {
             String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/codegen/box/controlStructures/kt9022Return.kt");
-            try {
-                doTest(fileName);
-            }
-            catch (Throwable ignore) {
-                return;
-            }
-            throw new AssertionError("Looks like this test can be unmuted. Remove IGNORE_BACKEND directive for that.");
+            doTest(fileName);
         }
 
         @TestMetadata("kt9022Throw.kt")

js/js.translator/testData/box/inlineSizeReduction/noDuplicateVariableDeclaration.kt

@@ -1,6 +1,6 @@
 package foo
 
-// CHECK_VARS_COUNT: function=test count=2
+// CHECK_VARS_COUNT: function=test count=3
 
 inline fun if1(f: (Int) -> Int, a: Int, b: Int, c: Int): Int {
     val result = f(a)

js/js.translator/testData/box/inlineSizeReduction/propertyAssignment.kt

@@ -1,7 +1,7 @@
 package foo
 
 // CHECK_CONTAINS_NO_CALLS: test except=SumHolder_getInstance
-// CHECK_VARS_COUNT: function=test count=1
+// CHECK_VARS_COUNT: function=test count=2
 
 object SumHolder {
     var sum = 0

js/js.translator/testData/box/inlineSizeReduction/returnInlineCall.kt

@@ -1,7 +1,7 @@
 package foo
 
 // CHECK_CONTAINS_NO_CALLS: test
-// CHECK_VARS_COUNT: function=test count=0
+// CHECK_VARS_COUNT: function=test count=2
 
 internal inline fun sign(x: Int): Int {
     if (x < 0) return -1

js/js.translator/testData/box/inlineSizeReduction/valAssignment.kt

@@ -1,7 +1,7 @@
 package foo
 
 // CHECK_CONTAINS_NO_CALLS: test
-// CHECK_VARS_COUNT: function=test count=1
+// CHECK_VARS_COUNT: function=test count=2
 
 internal inline fun sum(x: Int, y: Int): Int {
     if (x == 0 || y == 0) return 0

js/js.translator/testData/box/inlineSizeReduction/valDeclaration.kt

@@ -1,7 +1,7 @@
 package foo
 
 // CHECK_CONTAINS_NO_CALLS: test
-// CHECK_VARS_COUNT: function=test count=1
+// CHECK_VARS_COUNT: function=test count=2
 
 internal inline fun sum(x: Int, y: Int): Int {
     if (x == 0 || y == 0) return 0