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From Henson Choi
Subject Re: Row pattern recognition
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Msg-id CAAAe_zCe1gj_UkapC4e_GVZmud+dxru8YONpKRhtY6c2RmXcZg@mail.gmail.com
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In response to Re: Row pattern recognition  (Henson Choi <assam258@gmail.com>)
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Hi Tatsuo,

I know in v47 JIT compilation supports PREV/NEXT. What about
FIRST/LAST and compound forms?

Yes, those are JIT-compiled too in v47.

The JIT side only deals with two opcodes -- EEOP_RPR_NAV_SET
and EEOP_RPR_NAV_RESTORE.

FIRST/LAST and the compound forms differ only in how
ExecEvalRPRNavSet() computes target_pos for the slot swap;
the opcode interface and the call into ExecEvalRPRNavSet /
ExecEvalRPRNavRestore are unchanged.

So 0018's JIT support carries over to FIRST/LAST and
compounds without any JIT-side change.

Regards,
Henson

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