[turbofan] Minor cleanups to lowering of typed array loads/stores.

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 3da4bc71683a75e82c19ee7dedeadfd066c5d3c5..8db40dc75e0eb9195811ebed532aec5da3c08468 100644
--- a/test/unittests/compiler/js-typed-lowering-unittest.cc
+++ b/test/unittests/compiler/js-typed-lowering-unittest.cc
@@ -102,8 +102,8 @@ TEST_F(JSTypedLoweringTest, JSLoadPropertyFromExternalTypedArray) {
         r.replacement(),
         IsLoadElement(AccessBuilder::ForTypedArrayElement(type, true),
                       IsIntPtrConstant(bit_cast<intptr_t>(&backing_store[0])),
-                      key, IsInt32Constant(static_cast<int>(kLength)), effect,
-                      control));
+                      key, IsNumberConstant(static_cast<double>(kLength)),
+                      effect, control));
   }
 }
 
@@ -142,8 +142,8 @@ TEST_F(JSTypedLoweringTest, JSStorePropertyToExternalTypedArray) {
                   IsStoreElement(
                       AccessBuilder::ForTypedArrayElement(type, true),
                       IsIntPtrConstant(bit_cast<intptr_t>(&backing_store[0])),
-                      key, IsInt32Constant(static_cast<int>(kLength)), value,
-                      effect, control));
+                      key, IsNumberConstant(static_cast<double>(kLength)),
+                      value, effect, control));
     }
   }
 }