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[JS IR] Perform optimizations on the generated JS code

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The patch adopts and reuses the optimizations from the legacy backend.

The optimizations remove useless temporary variables,
statements and simplify generated JS code.

The optimizations can be disabled by `-Xoptimize-generated-js=false`.

Related to KT-51139
This commit is contained in:
Alexander Korepanov
2023-04-11 20:04:28 +02:00
committed by Space Team
parent 84b5af3c89
commit 79d378f2bd
87 changed files with 173 additions and 224 deletions
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js/js.frontend/src/org/jetbrains/kotlin/js/config/JSConfigurationKeys.java
+2
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@@ -121,4 +121,6 @@ public class JSConfigurationKeys {
public static final CompilerConfigurationKey<ZipFileSystemAccessor> ZIP_FILE_SYSTEM_ACCESSOR =
CompilerConfigurationKey.create("zip file system accessor, used for klib reading");
public static final CompilerConfigurationKey<Boolean> OPTIMIZE_GENERATED_JS =
CompilerConfigurationKey.create("perform additional optimizations on the generated JS code");
}