[turbofan] Add a CHECK for max node input count

src/compiler/instruction.h

Index: src/compiler/instruction.h
diff --git a/src/compiler/instruction.h b/src/compiler/instruction.h
index 92cb84268350bbcb985659838e3f0124ec7f67f2..851ba24cbb83332e057a55dbe89615bf0e4a7879 100644
--- a/src/compiler/instruction.h
+++ b/src/compiler/instruction.h
@@ -815,6 +815,9 @@ class Instruction final {
     DCHECK(output_count == 0 || outputs != nullptr);
     DCHECK(input_count == 0 || inputs != nullptr);
     DCHECK(temp_count == 0 || temps != nullptr);
+    // TODO(jarin/mstarzinger): Handle this gracefully. See crbug.com/582702.
+    CHECK(InputCountField::is_valid(input_count));
+
     size_t total_extra_ops = output_count + input_count + temp_count;
     if (total_extra_ops != 0) total_extra_ops--;
     int size = static_cast<int>(