diff --git a/src/runtime/runtime-atomics.cc b/src/runtime/runtime-atomics.cc
index dd309f7..28a8741 100644
--- a/src/runtime/runtime-atomics.cc
+++ b/src/runtime/runtime-atomics.cc
@@ -354,8 +354,8 @@
   CONVERT_SIZE_ARG_CHECKED(index, 1);
   CONVERT_NUMBER_ARG_HANDLE_CHECKED(oldobj, 2);
   CONVERT_NUMBER_ARG_HANDLE_CHECKED(newobj, 3);
-  RUNTIME_ASSERT(sta->GetBuffer()->is_shared());
-  RUNTIME_ASSERT(index < NumberToSize(isolate, sta->length()));
+  CHECK(sta->GetBuffer()->is_shared());
+  CHECK_LT(index, NumberToSize(isolate, sta->length()));
 
   uint8_t* source = static_cast<uint8_t*>(sta->GetBuffer()->backing_store()) +
                     NumberToSize(isolate, sta->byte_offset());
@@ -387,8 +387,8 @@
   CONVERT_ARG_HANDLE_CHECKED(JSTypedArray, sta, 0);
   CONVERT_SIZE_ARG_CHECKED(index, 1);
   CONVERT_NUMBER_ARG_HANDLE_CHECKED(value, 2);
-  RUNTIME_ASSERT(sta->GetBuffer()->is_shared());
-  RUNTIME_ASSERT(index < NumberToSize(isolate, sta->length()));
+  CHECK(sta->GetBuffer()->is_shared());
+  CHECK_LT(index, NumberToSize(isolate, sta->length()));
 
   uint8_t* source = static_cast<uint8_t*>(sta->GetBuffer()->backing_store()) +
                     NumberToSize(isolate, sta->byte_offset());
@@ -419,8 +419,8 @@
   CONVERT_ARG_HANDLE_CHECKED(JSTypedArray, sta, 0);
   CONVERT_SIZE_ARG_CHECKED(index, 1);
   CONVERT_NUMBER_ARG_HANDLE_CHECKED(value, 2);
-  RUNTIME_ASSERT(sta->GetBuffer()->is_shared());
-  RUNTIME_ASSERT(index < NumberToSize(isolate, sta->length()));
+  CHECK(sta->GetBuffer()->is_shared());
+  CHECK_LT(index, NumberToSize(isolate, sta->length()));
 
   uint8_t* source = static_cast<uint8_t*>(sta->GetBuffer()->backing_store()) +
                     NumberToSize(isolate, sta->byte_offset());
@@ -451,8 +451,8 @@
   CONVERT_ARG_HANDLE_CHECKED(JSTypedArray, sta, 0);
   CONVERT_SIZE_ARG_CHECKED(index, 1);
   CONVERT_NUMBER_ARG_HANDLE_CHECKED(value, 2);
-  RUNTIME_ASSERT(sta->GetBuffer()->is_shared());
-  RUNTIME_ASSERT(index < NumberToSize(isolate, sta->length()));
+  CHECK(sta->GetBuffer()->is_shared());
+  CHECK_LT(index, NumberToSize(isolate, sta->length()));
 
   uint8_t* source = static_cast<uint8_t*>(sta->GetBuffer()->backing_store()) +
                     NumberToSize(isolate, sta->byte_offset());
@@ -483,8 +483,8 @@
   CONVERT_ARG_HANDLE_CHECKED(JSTypedArray, sta, 0);
   CONVERT_SIZE_ARG_CHECKED(index, 1);
   CONVERT_NUMBER_ARG_HANDLE_CHECKED(value, 2);
-  RUNTIME_ASSERT(sta->GetBuffer()->is_shared());
-  RUNTIME_ASSERT(index < NumberToSize(isolate, sta->length()));
+  CHECK(sta->GetBuffer()->is_shared());
+  CHECK_LT(index, NumberToSize(isolate, sta->length()));
 
   uint8_t* source = static_cast<uint8_t*>(sta->GetBuffer()->backing_store()) +
                     NumberToSize(isolate, sta->byte_offset());
@@ -515,8 +515,8 @@
   CONVERT_ARG_HANDLE_CHECKED(JSTypedArray, sta, 0);
   CONVERT_SIZE_ARG_CHECKED(index, 1);
   CONVERT_NUMBER_ARG_HANDLE_CHECKED(value, 2);
-  RUNTIME_ASSERT(sta->GetBuffer()->is_shared());
-  RUNTIME_ASSERT(index < NumberToSize(isolate, sta->length()));
+  CHECK(sta->GetBuffer()->is_shared());
+  CHECK_LT(index, NumberToSize(isolate, sta->length()));
 
   uint8_t* source = static_cast<uint8_t*>(sta->GetBuffer()->backing_store()) +
                     NumberToSize(isolate, sta->byte_offset());
@@ -547,8 +547,8 @@
   CONVERT_ARG_HANDLE_CHECKED(JSTypedArray, sta, 0);
   CONVERT_SIZE_ARG_CHECKED(index, 1);
   CONVERT_NUMBER_ARG_HANDLE_CHECKED(value, 2);
-  RUNTIME_ASSERT(sta->GetBuffer()->is_shared());
-  RUNTIME_ASSERT(index < NumberToSize(isolate, sta->length()));
+  CHECK(sta->GetBuffer()->is_shared());
+  CHECK_LT(index, NumberToSize(isolate, sta->length()));
 
   uint8_t* source = static_cast<uint8_t*>(sta->GetBuffer()->backing_store()) +
                     NumberToSize(isolate, sta->byte_offset());