[turbofan] Add the TruncateFloat32ToInt32 operator to turbofan.

test/cctest/compiler/codegen-tester.h

Index: test/cctest/compiler/codegen-tester.h
diff --git a/test/cctest/compiler/codegen-tester.h b/test/cctest/compiler/codegen-tester.h
index 56e90c65b7eed5da0a0c49a1c962b77b2c8a5350..df445fb9acda38d97cd5a4ad7b5bd8e21aa0420e 100644
--- a/test/cctest/compiler/codegen-tester.h
+++ b/test/cctest/compiler/codegen-tester.h
@@ -92,7 +92,7 @@ class BufferedRawMachineAssemblerTester
   // parameters from memory. Thereby it is possible to pass 64 bit parameters
   // to the IR graph.
   Node* Parameter(size_t index) {
-    CHECK(index >= 0 && index < 4);
+    CHECK(index < 4);
     return parameter_nodes_[index];
   }