docs+codegen(unshadow): C tag-check elision — correctness PROVEN · perf CLOSED-NEGATIVE#2094
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…SED-NEGATIVE 🔵 C refinement-type tag-check elision (🟡 reg-alloc 무손실 우회 = prove-then-delete). codegen 변경은 직전 커밋(self/codegen.hexa: unary-plus `+literal` numeric tag-guard 삭제). 본 커밋 = verdict + bench + domain flip. g5 byte-diff IDENTICAL (mini macOS arm64, base=origin/main vs new=elision, 동일 runtime.o): - HIT corpus md5 e8060fb1... (양쪽 동일, emitted-C: guard DELETED) - NO-HIT corpus md5 8de57030... (양쪽 동일, emitted-C byte-identical = inert) 정직: correctness PROVEN(무손실). perf 🔴 CLOSED-NEGATIVE — clang -O2 가 리터럴-tag guard 를 이미 dead-eliminate(base/new asm IDENTICAL, u_main 66 instr, hexa_throw 0). inline-가시 검사는 -O2 와 중복; opaque-value bounds/null 검사는 hexa_array_get 안 = runtime.o ABI 벽(#2-EXT rt_str 와 동일). RULED-OUT AXIS: 소스레벨 tag-elision 은 inline-가시 검사에서 clang -O2 못 이김. verdict: .verdicts/unshadow-C-tag-elision/F-UNSHADOW-C-TAG-ELISION.txt (verbatim) bench: self/bench/unshadow_c_tag_elision_bench.hexa domain: UNSHADOW.md C milestone [x] · UNSHADOW.log.md 항목 Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
# Conflicts: # domains/UNSHADOW.log.md # domains/UNSHADOW.md
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UNSHADOW 전제를 HEXA-STACK 으로 재작성: LLVM 을 재구현하지 않고(M1 native-asm 5/5 패배) clang -O2 를 floor 로 상속한 위에 🔵 우위(인라인·atlas-fold· proof-carrying·check-elision)를 ceiling 으로 적층. 이번 사이클 두 closed-negative (#2-ext rt_str · C tag-elision)가 한 블로커로 수렴 = runtime.o C-ABI 벽; LTO/same-TU = .c=0 졸업이 두 tier 를 동시에 여는 열쇠. - UNSHADOW.md: 전제 재작성 + 3 신규 milestone (🟡 parity 상속 · 🔵×🟡 LTO unwall 실측 · 🏗️ 적층 원칙 문서화) - UNSHADOW.easy.md: 🏗️ HEXA-STACK 적층 섹션 (ASCII floor/ceiling 다이어그램 + 비교표) - UNSHADOW.log.md: B(#2093)+C(#2094) 랜딩 + ABI-벽 수렴 meta-finding 기록 Co-authored-by: dancinlife <search5599@proton.me> Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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unary-plus
+literal의 numeric-operand tag-guard 삭제 pilot. IntLit/FloatLit 는 정적으로 TAG_INT/TAG_FLOAT →hexa_throwarm unreachable → codegen 삭제. g5 byte-diff IDENTICAL (HIT+NO-HIT). 정직: correctness PROVEN(무손실) · perf 🔴 CLOSED-NEGATIVE — clang -O2 가 리터럴-tag guard 를 이미 dead-eliminate, opaque-value bounds/null 은 runtime.o ABI 벽(#2-EXT 와 동일). UNSHADOW 🔵 C 마일스톤 flip + log 기록.🤖 Generated with Claude Code