[danleh]

Part of #277.

Rebuild tsf-wasm, zlib-wasm, richards-wasm, argon2-wasm, HashSet-wasm, quicksort-wasm and gcc-loops-wasm with Emscripten 6.0.13 (Clang 24, Binaryen v133). The current builds use emcc 3.1.73, 4.0.0 (argon2) and 4.0.15 (HashSet). The benchmark sources do not change.

To review (8 files, +13/−5; the other 28 files are build.sh output, and each build.log records the emcc version):

• All seven build.sh: pass -sINCOMING_MODULE_JS_API=wasmBinary,print,printErr,preRun,postRun,noInitialRun. Emscripten 6.0.2 dropped wasmBinary from the default list, and setting the list replaces the default.
• gcc-loops-wasm/build.sh: link with em++. Emscripten 6.0.6 turned off DEFAULT_TO_CXX.
• argon2-wasm/build.sh: export HEAPU32, which benchmark.js uses to write the salt. Emscripten 4.0.7 stopped exporting the heap views by default.
• zlib-wasm/src/zpipe.c: build.sh downloads it from zlib.net, and version 1.5 changes only Windows code. Emscripten's zlib port moved from 1.2.13 to 1.3.2.

Binaries: since Emscripten 4.0 the default targets include bulk memory and non-trapping float-to-int, so memcpy and memset compile to memory.copy and memory.fill. The seven workloads shrink by 88 KB in total (quicksort −23%, richards −20%, gcc-loops −10%).

Engine requirements: bulk memory, non-trapping float-to-int, sign extension and BigInt integration, all shipped since Safari 15, Firefox 79 and Chrome 85.

Scores (measured on a Linux x64 workstation with jsvu shells, each test alone in a fresh shell, 6 rounds; change of the mean score, rounds won in parentheses, bold = statistically significant at 95% confidence; @kmiller68 may want to check on macOS / arm64):

Test	d8 (15.9.60)	jsc (325217)	SpiderMonkey (160.0b3)
tsf-wasm	+8.7% (6/6)	−0.7% (2/6)	−0.9% (3/6)
zlib-wasm	+2.2% (5/6)	+0.2% (3/6)	+5.1% (6/6)
richards-wasm	+1.7% (4/6)	−0.5% (3/6)	−1.0% (2/6)
argon2-wasm	−2.4% (1/6)	+3.3% (4/6)	+0.1% (4/6)
HashSet-wasm	+2.4% (3/6)	+3.0% (6/6)	+1.7% (5/6)
quicksort-wasm	−3.1% (2/6)	+0.8% (3/6)	−2.8% (1/6)
gcc-loops-wasm	+27.7% (6/6)	+36.8% (6/6)	+32.4% (6/6)
Geomean	+4.9% (5/6)	+5.5% (6/6)	+4.4% (6/6)

First and Average subscores

Test	d8 First / Average	jsc First / Average	SpiderMonkey First / Average
tsf-wasm	−2.7% / +13.1%	−11.3% / +8.4%	−3.3% / −0.3%
zlib-wasm	+4.5% / +0.2%	−1.7% / +0.8%	+9.3% / +3.5%
richards-wasm	+0.1% / +3.0%	+2.5% / −3.3%	+7.6% / −3.9%
argon2-wasm	+2.2% / −6.7%	+2.3% / +4.1%	−2.8% / +3.2%
HashSet-wasm	+10.3% / −3.5%	+1.9% / +1.9%	−2.1% / +3.9%
quicksort-wasm	−8.7% / −2.2%	+0.4% / +2.6%	−6.3% / −1.0%
gcc-loops-wasm	+16.8% / +30.9%	+33.1% / +36.9%	+27.3% / +34.8%

Reproduce: cd workloads/<name> && ./build.sh with emsdk 6.0.13 active. A rebuild reproduces all committed files bit for bit; only the date in build.log changes.

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