Split-TU: extract JitPowIntegerEmitExponents70to79 (#36387) - #37653
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Move seventieth…seventyninth chained-smul emit out of JitPowIntegerEmitHigh so gen-0 spine gains another TU (High 47k→30k + 17k). Hub dispatches 70–79 before High (80–91). Also null-guard Exponents50to69 tryEmit for runtime exponents. Spine 8590→8591. php-src: Zend/zend_operators.c pow_function/zend_pow; ext/standard/math.c PHP_FUNCTION(pow). Co-authored-by: Cursor <cursoragent@cursor.com>
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PurHur
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Lower compile-time exponent 92 via (ninetyfirst×n) chained smul.with.overflow in JitPowIntegerEmitHigh — omit llvm.pow.f64. Even: (-1)**92 === 1. Rebased onto master after Exponents70to79 split-TU (#37653). Co-authored-by: Cursor <cursoragent@cursor.com>
PurHur
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…) (#37654) Lower compile-time exponent 92 via (ninetyfirst×n) chained smul.with.overflow in JitPowIntegerEmitHigh — omit llvm.pow.f64. Even: (-1)**92 === 1. Rebased onto master after Exponents70to79 split-TU (#37653). Co-authored-by: PurHur <PurHur@users.noreply.github.com> Co-authored-by: Cursor <cursoragent@cursor.com>
This was referenced Sep 9, 2026
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Summary
JitPowIntegerEmitExponents70to79— move seventieth…seventyninth chained-smul emit (~17k lines) out ofJitPowIntegerEmitHighso gen-0 spine gains another TU (Part of Performance: compile-time targets and gate — hello-world ≤ 3 s warm, MiniWebApp ≤ 10 s, 400 statements per function in < 5 s, one-file edit rebuild < 25 % of full, spine gen-0 < 30 min with split-TU (script/bench-gate.php --compile, bin/compile.php, lib/Compiler.php) (re-#36224 slice 2, re-#36199) #36387).JitPowIntegerEmitHigh46827 → 29875 (80–91 only); new class 17003; hub dispatches 70–79 before High; spine 8590 → 8591.php-src:
Zend/zend_operators.c(pow_function/zend_pow/mul_function);ext/standard/math.cPHP_FUNCTION(pow).Test plan
php -lhub / High / Exponents70to79 → OKphp script/check-size-budgets.php→ OK (151 entries)./script/spine-sync.sh --no-link→ spine 8591/8591./script/phpunit.sh --filter 'NoThrowPowSeventiethMulAotTest|NoThrowPowSeventyninthMulAotTest|NoThrowPowEightiethMulAotTest|NoThrowPowSixtyninthMulAotTest|NoThrowPowNinetiethMulAotTest'→ 20/20./script/aot-smoke.sh→ 9/9make north-star5-verify-fast→ OK (Spine 8591/8591)Closes nothing (slice of #36387).
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