[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 9ae1005f532634c63ac26b613968821d284124af..4b4c47b1e12b64028f85eba895bc1e35fdfbe342 100644
--- a/src/compiler/typer.cc
+++ b/src/compiler/typer.cc
@@ -2007,6 +2007,9 @@ 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(); }
 
@@ -2062,7 +2065,6 @@ Type* Typer::Visitor::TypeInt64SubWithOverflow(Node* node) {
 
 Type* Typer::Visitor::TypeInt64Mul(Node* node) { return Type::Internal(); }
 
-
 Type* Typer::Visitor::TypeInt64Div(Node* node) { return Type::Internal(); }