inline class MyValue1 {
    int[] array = new int[1];
}

class Test {

  void test1(MyValue1[] array) {
    array[0].array[0] = 0;
/*
       2: aaload
       3: getfield
       6: iconst_0
       7: iconst_0
       8: iastore
*/
  }

  public static void main(String[] args) {
    Test t = new Test();
    MyValue1[] array = {new MyValue1()};
    for (int i = 0; i < 10_000; ++i)
      t.test1(array);
  }
}

The problem is that the aaload is delayed until getfield which then sets the type of the LoadIndexed to int[] but the exact_type/declared_type are not updated and still return MyValue1:
            pending_load_indexed()->update(field, offset - field->holder()->as_inline_klass()->first_field_offset());
            LoadIndexed* li = pending_load_indexed()->load_instr();
            li->set_type(type);

We assert at iastore because the type is not an array type.


# Internal Error (/oracle/valhalla/open/src/hotspot/share/ci/ciMetadata.hpp:96), pid=1207075, tid=1207084
# assert(is_array_klass()) failed: bad cast

Current CompileTask:
C1: 304 398 2 Test::test1 (10 bytes)

Stack: [0x00007fac9f2ff000,0x00007fac9f400000], sp=0x00007fac9f3fdd80, free space=1019k
Native frames: (J=compiled Java code, A=aot compiled Java code, j=interpreted, Vv=VM code, C=native code)
V [libjvm.so+0x74cf6c] GraphBuilder::store_indexed(BasicType)+0x76c
V [libjvm.so+0x75559f] GraphBuilder::iterate_bytecodes_for_block(int)+0x20ff
V [libjvm.so+0x755959] GraphBuilder::iterate_all_blocks(bool)+0x89
V [libjvm.so+0x756b3f] GraphBuilder::GraphBuilder(Compilation*, IRScope*)+0x52f
V [libjvm.so+0x7673b3] IR::IR(Compilation*, ciMethod*, int)+0x663
V [libjvm.so+0x724921] Compilation::build_hir() [clone .part.0]+0x261
V [libjvm.so+0x72933c] Compilation::compile_java_method()+0x1bc
V [libjvm.so+0x72a157] Compilation::compile_method()+0x1d7
V [libjvm.so+0x72abc6] Compilation::Compilation(AbstractCompiler*, ciEnv*, ciMethod*, int, BufferBlob*, bool, DirectiveSet*)+0x3c6
V [libjvm.so+0x72c043] Compiler::compile_method(ciEnv*, ciMethod*, int, bool, DirectiveSet*)+0x1a3
V [libjvm.so+0xa61848] CompileBroker::invoke_compiler_on_method(CompileTask*)+0xe08
V [libjvm.so+0xa62398] CompileBroker::compiler_thread_loop()+0x5a8
V [libjvm.so+0x198e5f6] JavaThread::thread_main_inner()+0x256
V [libjvm.so+0x1994f70] Thread::call_run()+0x100
V [libjvm.so+0x164f8d6] thread_native_entry(Thread*)+0x116