PPC [heap]: Increase size of the compiled source object

test/cctest/test-serialize.cc

Index: test/cctest/test-serialize.cc
diff --git a/test/cctest/test-serialize.cc b/test/cctest/test-serialize.cc
index 4373ddca9655771e6b390a9880564c79dcd48a75..5294571e0c213c4041081aac2428cacdfd6708d7 100644
--- a/test/cctest/test-serialize.cc
+++ b/test/cctest/test-serialize.cc
@@ -1067,7 +1067,7 @@ TEST(CodeSerializerLargeCodeObject) {
   Vector<const uint8_t> source =
       ConstructSource(STATIC_CHAR_VECTOR("var j=1; if (!j) {"),
                       STATIC_CHAR_VECTOR("for (let i of Object.prototype);"),
-                      STATIC_CHAR_VECTOR("} j=7; j"), 1500);
+                      STATIC_CHAR_VECTOR("} j=7; j"), 2000);
   Handle<String> source_str =
       isolate->factory()->NewStringFromOneByte(source).ToHandleChecked();