Create Five-1.0-Phase-C-TODO.md capturing the remaining 1.0 work:
three Harbour contrib libraries (hbct Clipper Tools, hbnf Numeric
Functions, hbtip TCP/IP/SMTP/POP3/HTTP). Each entry lists the
Harbour source path, a minimum first-pass scope, and an effort
estimate. Suggested order: hbct → hbtip → hbnf. Total ~6-10 days.
Update RTL-Go-Native-Migration.md "남은 병목" with the Phase A/B
completion list — six features shipped this session — plus a note
that the 11 HBTYPE functions the initial analysis flagged are
actually Harbour's internal scalar class factories, not user-facing
blockers (Five's SendBuiltin covers the same surface).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Six new migration-log entries covering this session's 21 commits:
#27 VM in-place stack ops + symbol hoist (global 3-15%)
#28 gengo compile-time peepholes (9 commits, 1-7% bench)
#29 SELECT WA cache extension (single-table 2x+)
#30 JOIN temp-alias stabilisation (B6 1.67x)
#31 Stat-loop gates — view + CTE (CPU -40pp in rawsyscalln)
#32 Go-native SqlIsAggName + FetchRow (agg/window 1.3-1.7x)
Plus a cumulative bench table vs the 3caadb2 baseline and an
updated "남은 병목" section pointing at EvalExpr / JOINRECURSE /
HASHJOIN / Go runtime primitives as the remaining levers.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
The VM call path (PushSymbol → Function → Frame) is traversed by every
PRG function call. Three changes together cut per-call overhead across
the entire bench suite.
Changes
- hbrt/call.go Function(): replace pop-push dance with a single slice
shift (N+2 pops + N pushes → 1 copy of N slots + sp adjust). Kills
the per-call `make([]Value, nArgs)` heap alloc. Resolved function
pointer is cached back into sym.Func so subsequent calls on the
same Symbol skip the VM lookup entirely.
- hbrt/vm.go GetSym(): new helper. Generated code calls it with a
pointer to a package-level `*Symbol` slot so FindSymbol (which takes
the VM RWMutex + map lookup) runs at most once per symbol per
process. Nil results are intentionally NOT cached — an init-order
miss becomes a retry on the next call instead of a permanent sticky
failure.
- hbrt/thread.go pushPendingSym(): scalar fast slot for depth=1 call
nesting (common case). Nil syms still go through the slice so the
"empty vs stored nil" ambiguity can't produce a false pop.
- compiler/gengo/gengo.go: emit `t.PushSymbol(t.GetSym(&_sym_<file>_<NAME>, "NAME"))`
for every function call site, with a per-file prefix so multi-PRG
builds don't collide on identical symbol names.
Bugs fixed during bring-up
- pendingSymFast == nil was ambiguous ("unused" vs "nil stored"). Nil
syms now spill to the slice, preserving distinguishability.
- The old varName-reuse branch at the PushSymbol emit site skipped
the GetSym wrapper, emitting a raw `t.PushSymbol(varName)` against
an uninitialized package-level *Symbol. Every call path now funnels
through emitPushSymbol.
bench_sql deltas vs prior build
- B1 SELECT * 114 → 97 µs (15%)
- B4 GROUP_HAVING 584 → 554 µs (5%)
- B8 RECURSIVE CTE 150 → 141 µs (6%)
- B10 RANK PARTITION 310 → 296 µs (5%)
- B11 SUM OVER 335 → 320 µs (4%)
- B14 COUNT 295 → 281 µs (5%)
- B15 CTE+WIN+JOIN 1891 → 1826 µs (3%)
Verification
- go test ./... ALL PASS
- FiveSql2 test_sql1999 43/43
- tests/compat_harbour 56/56
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
