Multiple tests are failing on the Apple-BigSur-AppleSilicon-Debug-JSC-Tests bot ** The following JSC stress test failures have been introduced: microbenchmarks/bit-test-constant.js.ftl-no-cjit-fuzz microbenchmarks/bit-test-load.js.ftl-no-cjit-fuzz microbenchmarks/bit-test-nonconstant.js.ftl-no-cjit-fuzz microbenchmarks/get-and-put-by-val-double-index-dont-fall-off-a-cliff.js.ftl-no-cjit-fuzz microbenchmarks/get-by-val-polymorphic-ic-4.js.ftl-no-cjit-fuzz microbenchmarks/implicit-bigswitch-indirect-symbol.js.ftl-no-cjit-fuzz microbenchmarks/int52-rand-function.js.ftl-no-cjit-fuzz microbenchmarks/memcpy-typed-loop-large.js.ftl-eager-no-cjit microbenchmarks/memcpy-typed-loop-large.js.ftl-no-cjit-fuzz Looks like they are all timing out: microbenchmarks/bit-test-nonconstant.js.ftl-no-cjit-fuzz: Timed out after 339.000000 sec seconds! microbenchmarks/bit-test-load.js.ftl-no-cjit-fuzz: Timed out after 339.000000 sec seconds! microbenchmarks/bit-test-constant.js.ftl-no-cjit-fuzz: Timed out after 339.000000 sec seconds! microbenchmarks/get-and-put-by-val-double-index-dont-fall-off-a-cliff.js.ftl-no-cjit-fuzz: Timed out after 339.000000 sec seconds! microbenchmarks/int52-rand-function.js.ftl-no-cjit-fuzz: Timed out after 339.000000 sec seconds! microbenchmarks/implicit-bigswitch-indirect-symbol.js.ftl-no-cjit-fuzz: Timed out after 339.000000 sec seconds! microbenchmarks/get-by-val-polymorphic-ic-4.js.ftl-no-cjit-fuzz: Timed out after 339.000000 sec seconds! microbenchmarks/memcpy-typed-loop-large.js.ftl-eager-no-cjit: Timed out after 339.000000 sec seconds! microbenchmarks/memcpy-typed-loop-large.js.ftl-no-cjit-fuzz: Timed out after 339.000000 sec seconds! https://build.webkit.org/#/builders/17/builds/824/steps/jscore-test/logs/stdio
Related to https://trac.webkit.org/changeset/279916/webkit
<rdar://problem/80705115>
The link above is for the arm64 queue, more seen here on the x86 bot: https://build.webkit.org/#/builders/17/builds/824
The responsible change was reverted in https://trac.webkit.org/changeset/280004/webkit