[turbofan] Introduce integer multiplication with overflow.

src/compiler/typer.cc

Index: src/compiler/typer.cc
diff --git a/src/compiler/typer.cc b/src/compiler/typer.cc
index ce8a5636233c1476de497b1db9e3c2615ce48337..aaddccb5d364340c3319c6c98efd93d62c0e05c0 100644
--- a/src/compiler/typer.cc
+++ b/src/compiler/typer.cc
@@ -2060,6 +2060,9 @@ Type* Typer::Visitor::TypeInt32SubWithOverflow(Node* node) {
 
 Type* Typer::Visitor::TypeInt32Mul(Node* node) { return Type::Integral32(); }
 
+Type* Typer::Visitor::TypeInt32MulWithOverflow(Node* node) {
+  return Type::Internal();
+}
 
 Type* Typer::Visitor::TypeInt32MulHigh(Node* node) { return Type::Signed32(); }
 
@@ -2115,7 +2118,6 @@ Type* Typer::Visitor::TypeInt64SubWithOverflow(Node* node) {
 
 Type* Typer::Visitor::TypeInt64Mul(Node* node) { return Type::Internal(); }
 
-
 Type* Typer::Visitor::TypeInt64Div(Node* node) { return Type::Internal(); }