[profiler] Support Sparkplug on heap compilation

Bug: v8:11872
Change-Id: I78c480e3266212adf1e71f728ca16b704c2e7d77
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3030702
Auto-Submit: Victor Gomes <victorgomes@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Commit-Queue: Yang Guo <yangguo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75738}

src/profiler/heap-snapshot-generator.cc

@@ -1200,9 +1200,17 @@ void V8HeapExplorer::TagBuiltinCodeObject(Code code, const char* name) {
 }
 
 void V8HeapExplorer::ExtractCodeReferences(HeapEntry* entry, Code code) {
-  TagObject(code.relocation_info(), "(code relocation info)");
-  SetInternalReference(entry, "relocation_info", code.relocation_info(),
+  Object reloc_info_or_undefined = code.relocation_info_or_undefined();
+  TagObject(reloc_info_or_undefined, "(code relocation info)");
+  SetInternalReference(entry, "relocation_info", reloc_info_or_undefined,
                        Code::kRelocationInfoOffset);
+  if (reloc_info_or_undefined.IsUndefined()) {
+    // The code object was compiled directly on the heap, but it was not
+    // finalized.
+    DCHECK(code.kind() == CodeKind::BASELINE);
+    return;
+  }
+
   TagObject(code.deoptimization_data(), "(code deopt data)");
   SetInternalReference(entry, "deoptimization_data", code.deoptimization_data(),
                        Code::kDeoptimizationDataOffset);