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Cache array length in for-in-array loop if possible

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If the range expression is not a local variable (which can be updated in
the loop body affecting loop behavior, see KT-21354), we can cache the
array length, thus turning a for-in-array loop into a simple optimizable
counter loop.

 #KT-21321 In Progress
This commit is contained in:
Dmitry Petrov
2017-11-24 17:46:54 +03:00
parent 328c67b9e8
commit e2fa613b70
10 changed files with 127 additions and 15 deletions
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js/js.tests/test/org/jetbrains/kotlin/js/test/semantics/JsCodegenBoxTestGenerated.java
+19 -1
View File
@@ -26,7 +26,7 @@ import org.junit.runner.RunWith;
import java.io.File;
import java.util.regex.Pattern;
/** This class is generated by {@link org.jetbrains.kotlin.generators.tests.TestsPackage}. DO NOT MODIFY MANUALLY */
/** This class is generated by {@link org.jetbrains.kotlin.generators.tests.TestsPackage}. DO NOT MODIFY MANUALLY test*/
@SuppressWarnings("all")
@TestMetadata("compiler/testData/codegen/box")
@TestDataPath("$PROJECT_ROOT")
@@ -15803,6 +15803,24 @@ public class JsCodegenBoxTestGenerated extends AbstractJsCodegenBoxTest {
doTest(fileName);
}
@TestMetadata("forInArrayWithArrayPropertyUpdatedInLoopBody.kt")
public void testForInArrayWithArrayPropertyUpdatedInLoopBody() throws Exception {
String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/codegen/box/ranges/forInArrayWithArrayPropertyUpdatedInLoopBody.kt");
doTest(fileName);
}
@TestMetadata("forInArrayWithArrayVarUpdatedInLoopBody.kt")
public void testForInArrayWithArrayVarUpdatedInLoopBody() throws Exception {
String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/codegen/box/ranges/forInArrayWithArrayVarUpdatedInLoopBody.kt");
try {
doTest(fileName);
}
catch (Throwable ignore) {
return;
}
throw new AssertionError("Looks like this test can be unmuted. Remove IGNORE_BACKEND directive for that.");
}
@TestMetadata("forInRangeLiteralWithMixedTypeBounds.kt")
public void testForInRangeLiteralWithMixedTypeBounds() throws Exception {
String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/codegen/box/ranges/forInRangeLiteralWithMixedTypeBounds.kt");