[turbofan] Get rid of truncation by store.

test/unittests/compiler/js-typed-lowering-unittest.cc

Index: test/unittests/compiler/js-typed-lowering-unittest.cc
diff --git a/test/unittests/compiler/js-typed-lowering-unittest.cc b/test/unittests/compiler/js-typed-lowering-unittest.cc
index 5c6b52557d69606020b2219efedc6bd2931488dd..c58c1cd490bc1261025f14224d11751a11c37f2b 100644
--- a/test/unittests/compiler/js-typed-lowering-unittest.cc
+++ b/test/unittests/compiler/js-typed-lowering-unittest.cc
@@ -782,13 +782,6 @@ TEST_F(JSTypedLoweringTest, JSStorePropertyToExternalTypedArrayWithConversion) {
       Matcher<Node*> value_matcher =
           IsToNumber(value, context, effect, control);
       Matcher<Node*> effect_matcher = value_matcher;
-      if (AccessBuilder::ForTypedArrayElement(type, true)
-              .type->Is(Type::Signed32())) {
-        value_matcher = IsNumberToInt32(value_matcher);
-      } else if (AccessBuilder::ForTypedArrayElement(type, true)
-                     .type->Is(Type::Unsigned32())) {
-        value_matcher = IsNumberToUint32(value_matcher);
-      }
 
       ASSERT_TRUE(r.Changed());
       EXPECT_THAT(