[turbofan] Modifies the --turbo-verify-machine-graph flag to act as a filter.

src/code-stub-assembler.h

Index: src/code-stub-assembler.h
diff --git a/src/code-stub-assembler.h b/src/code-stub-assembler.h
index 087d6e3a75a6d8b12bf6cb416c731634870f6c88..e453676fefe289b447794e7c41d28b059e7739cf 100644
--- a/src/code-stub-assembler.h
+++ b/src/code-stub-assembler.h
@@ -135,7 +135,8 @@ class CodeStubAssembler : public compiler::CodeAssembler {
   // Computes a * b for Smi inputs a and b; result is not necessarily a Smi.
   compiler::Node* SmiMul(compiler::Node* a, compiler::Node* b);
   compiler::Node* SmiOr(compiler::Node* a, compiler::Node* b) {
-    return WordOr(a, b);
+    return BitcastWordToTaggedSigned(
+        WordOr(BitcastTaggedToWord(a), BitcastTaggedToWord(b)));
   }
 
   // Allocate an object of the given size.