Merged: [wasm] Fix code specialization for empty memory buffer

src/wasm/wasm-module.cc

Index: src/wasm/wasm-module.cc
diff --git a/src/wasm/wasm-module.cc b/src/wasm/wasm-module.cc
index 5b24d7702e8f13f5232a9706c1ccb6e7c96b90a0..5aae4484c13a541b16a58fc385524760364bd236 100644
--- a/src/wasm/wasm-module.cc
+++ b/src/wasm/wasm-module.cc
@@ -1171,8 +1171,12 @@ class InstantiationHelper {
               ? static_cast<Address>(
                     compiled_module_->memory()->backing_store())
               : nullptr;
-      code_specialization.RelocateMemoryReferences(old_mem_start, old_mem_size,
-                                                   mem_start, mem_size);
+      // We might get instantiated again with the same memory. No patching
+      // needed in this case.
+      if (old_mem_start != mem_start || old_mem_size != mem_size) {
+        code_specialization.RelocateMemoryReferences(
+            old_mem_start, old_mem_size, mem_start, mem_size);
+      }
       compiled_module_->set_memory(memory_);
     }