[lworld] RFR: 8377451: [lworld] Add ValuePayload abstraction [v8]

[Aleksey Shipilev]

On Mon, 16 Feb 2026 10:57:59 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

>> I think https://github.com/openjdk/valhalla/commit/b38f3672d1d2c2f3ecd7b8b48db7be29148662fa got some weird entries, I could have done it a bit better. 
>> 
>> Also forgot to remove the trailing two entities in ~~https://github.com/openjdk/valhalla/commit/2dba3de2331b6fdb2148c2fc48b4d514045b26f9~~
>
> I think I want the final hunk to be something like:
> 
> 
> @@ -581,18 +582,17 @@ void BytecodeInterpreter::run(interpreterState istate) {
>  /* 0xC0 */ &&opc_checkcast,     &&opc_instanceof,       &&opc_monitorenter,   &&opc_monitorexit,
>  /* 0xC4 */ &&opc_wide,          &&opc_multianewarray,   &&opc_ifnull,         &&opc_ifnonnull,
>  /* 0xC8 */ &&opc_goto_w,        &&opc_jsr_w,            &&opc_breakpoint,     &&opc_fast_agetfield,
> -/* 0xCC */ &&opc_fast_bgetfield,&&opc_fast_cgetfield,   &&opc_fast_dgetfield, &&opc_fast_fgetfield,
> +/* 0xCC */ &&opc_default,       &&opc_fast_bgetfield,   &&opc_fast_cgetfield, &&opc_fast_dgetfield,
>  
> -/* 0xD0 */ &&opc_fast_igetfield,&&opc_fast_lgetfield,   &&opc_fast_sgetfield, &&opc_fast_aputfield,
> -/* 0xD4 */ &&opc_fast_bputfield,&&opc_fast_zputfield,   &&opc_fast_cputfield, &&opc_fast_dputfield,
> -/* 0xD8 */ &&opc_fast_fputfield,&&opc_fast_iputfield,   &&opc_fast_lputfield, &&opc_fast_sputfield,
> -/* 0xDC */ &&opc_fast_aload_0,  &&opc_fast_iaccess_0,   &&opc_fast_aaccess_0, &&opc_fast_faccess_0,
> +/* 0xD0 */ &&opc_fast_fgetfield, &&opc_fast_igetfield,  &&opc_fast_lgetfield, &&opc_fast_sgetfield,
> +/* 0xD4 */ &&opc_fast_aputfield, &&opc_default,         &&opc_fast_bputfield, &&opc_fast_zputfield,
> +/* 0xD8 */ &&opc_fast_cputfield, &&opc_fast_dputfield,  &&opc_fast_fputfield, &&opc_fast_iputfield,
> +/* 0xDC */ &&opc_fast_lputfield, &&opc_fast_sputfield,  &&opc_fast_aload_0,   &&opc_fast_iaccess_0,
>  
> -/* 0xE0 */ &&opc_fast_iload,    &&opc_fast_iload2,      &&opc_fast_icaload,   &&opc_fast_invokevfinal,
> -/* 0xE4 */ &&opc_default,       &&opc_default,          &&opc_fast_aldc,      &&opc_fast_aldc_w,
> -/* 0xE8 */ &&opc_return_register_finalizer,
> -                                &&opc_invokehandle,     &&opc_nofast_getfield,&&opc_nofast_putfield,
> -/* 0xEC */ &&opc_nofast_aload_0,&&opc_nofast_iload,     &&opc_default,        &&opc_default,
> +/* 0xE0 */ &&opc_fast_aaccess_0,  &&opc_fast_faccess_0,    &&opc_fast_iload,                &&opc_fast_iload2,
> +/* 0xE4 */ &&opc_fast_icaload,    &&opc_fast_invokevfinal, &&opc_default,                   &&opc_default,
> +/* 0xE8 */ &&opc_fast_aldc,       &&opc_fast_aldc_w,       &&opc_return_register_finalizer, &&opc_invokehandle,
> +/* 0xEC */ &&opc_nofast_getfield, &&opc_nofast_putfield,   &&opc_nofast_aload_0,            &&opc_nofast_iload,
>  
>  /* 0xF0 */ &&opc_default,       &&opc_default,          &&opc_default,        &&opc_default,
>  /* 0xF4 */ &&opc_default,       &&opc_default,          &&opc_default,  ...

[zero-no-whitespace.patch](https://github.com/user-attachments/files/25338434/zero-no-whitespace.patch) should apply on top of your PR, that's how I get to the hunk above.

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PR Review Comment: https://git.openjdk.org/valhalla/pull/2068#discussion_r2811834618