On Tue, May 24, 2016 at 9:59 AM,  <[email protected]> wrote:
> Hi all.
>
> My full-codegen.cc:
>
> bool FullCodeGenerator::MakeCode(CompilationInfo* info) {
>   UNREACHABLE();
>   Isolate* isolate = info->isolate();
>   ...
>
> I run d8 and I see in call stack
>
> #5  0x000000000258c1f0 in
> v8::internal::LChunkBuilder::DoAllocate(v8::internal::HAllocate*) ()
> #6  0x00000000012b74e8 in
> v8::internal::HAllocate::CompileToLithium(v8::internal::LChunkBuilder*) ()
> #7  0x00000000025951f8 in
> v8::internal::LChunkBuilder::VisitInstruction(v8::internal::HInstruction*)
> ()
> #8  0x0000000002597b68 in
> v8::internal::LChunkBuilder::DoBasicBlock(v8::internal::HBasicBlock*,
> v8::internal::HBasicBlock*) ()
> #9  0x000000000258bb28 in v8::internal::LChunkBuilder::Build() ()
> #10 0x000000000147dd10 in
> v8::internal::LChunk::NewChunk(v8::internal::HGraph*) ()
> #11 0x0000000000d843e8 in
> _INTERNAL_22_code_stubs_hydrogen_cc_b1190256::v8::internal::OptimizeGraph(_INTERNAL_22_code_stubs_hydrogen_cc_b1190256::v8::internal::HGraph*)
> ()
> #12 0x0000000000d56e78 in
> v8::internal::ArrayNoArgumentConstructorStub::GenerateCode() ()
> #13 0x0000000000d0e5c8 in v8::internal::CodeStub::GetCode() ()
> #14 0x00000000026012a0 in void
> _INTERNAL_17_code_stubs_e2k_cc_8d6fa455::v8::internal::ArrayConstructorStubAheadOfTimeHelper<_INTERNAL_17_code_stubs_e2k_cc_8d6fa455::v8::internal::ArrayNoArgumentConstructorStub>(_INTERNAL_17_code_stubs_e2k_cc_8d6fa455::v8::internal::Isolate*)
> ()
> #15 0x00000000025fe9f8 in
> v8::internal::CodeStub::GenerateStubsAheadOfTime(v8::internal::Isolate*) ()
> #16 0x0000000001814db8 in v8::internal::Heap::CreateFixedStubs() ()
> #17 0x0000000001811e28 in v8::internal::Heap::CreateInitialObjects() ()
> #18 0x00000000017e5ef8 in v8::internal::Heap::CreateHeapObjects() ()
> #19 0x0000000001b67b50 in
> v8::internal::Isolate::Init(v8::internal::Deserializer*) ()
> #20 0x0000000000aacba0 in v8::Isolate::New(v8::Isolate::CreateParams const&)
> ()
> #21 0x0000000000913ed8 in v8::Shell::Main(int, char**) ()
> #22 0x0000000000908fc8 in main ()
>
> Why Lithium code's is called? Is Lithium a part of crankshaft compiler,
> right?
> What is code compiled before full-codegen?

Those are the stubs for `new Array()`, `new Array(42)`, etc.  Yes,
they are generated by Hydrogen/Lithium.

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