[turbofan] Add Float32(Max|Min) machine operators.

src/compiler/typer.cc

Index: src/compiler/typer.cc
diff --git a/src/compiler/typer.cc b/src/compiler/typer.cc
index 5d210b6bee3a3e6d89be73c93ad071489fa132f0..6733bd6affeb0592d93cc2b3c607da885f4dae4b 100644
--- a/src/compiler/typer.cc
+++ b/src/compiler/typer.cc
@@ -2103,6 +2103,9 @@ Type* Typer::Visitor::TypeFloat32LessThanOrEqual(Node* node) {
   return Type::Boolean();
 }
 
+Type* Typer::Visitor::TypeFloat32Max(Node* node) { return Type::Number(); }
+
+Type* Typer::Visitor::TypeFloat32Min(Node* node) { return Type::Number(); }
 
 Type* Typer::Visitor::TypeFloat64Add(Node* node) { return Type::Number(); }