[roll] Roll fuchsia [roll] Roll llvm-project/libc 8982b8d..f42d483 (31 commits)

f42d483:https://llvm.googlesource.com/llvm-project/libc/+/f42d4831cd5185449878384883629f9b6bad7c81 [libc][math] Refactor bf16mul family to header-only (#182018)
9fad130:https://llvm.googlesource.com/llvm-project/libc/+/9fad1307368d9df9a0d5ff56c1b8f42bcf197dfa [libc][math] Refactor bf16addl implementation to header-only in src/__support/math folder. (#182561)
4f0899e:https://llvm.googlesource.com/llvm-project/libc/+/4f0899e03d2757ac4be69892792ba896fb71f012 [libc][math] Refactor getpayload family functions to header-only (#181824)
b882077:https://llvm.googlesource.com/llvm-project/libc/+/b88207728047d5610b8a81cafac3c3b6c813da35 [libc][math] Refactor `bf16fmaf128` to header-only (#182009)
e217da7:https://llvm.googlesource.com/llvm-project/libc/+/e217da741e023bec7a3d4359c0af1037776bcbd0 [libc] Update the GPU allocator to work under post-Volta ITS
6a1feca:https://llvm.googlesource.com/llvm-project/libc/+/6a1feca7fc997364b99c0d8c312979452579a1b9 [libc] Properly handle null handles in rpc_dispatch.h
03e67ac:https://llvm.googlesource.com/llvm-project/libc/+/03e67ac0bd0c84c428f58bf5b494a30a1f42043c [libc] Save one instruction on ARM (#181515)
98d541a:https://llvm.googlesource.com/llvm-project/libc/+/98d541a017ece47e9e0fd3447524deff94092aa3 [libc] Support array tags in the RPC dispatch helpers (#181395)
3b63045:https://llvm.googlesource.com/llvm-project/libc/+/3b63045f23a06c401332220858bb8ee71e2b192b [libc][math] Refactor fadd family to header-only (#182185)
a2552e8:https://llvm.googlesource.com/llvm-project/libc/+/a2552e82a24f4bcd8c75470528f5fb6d85a68b0b [libc][math] Refactor fmax family to header-only (#182165)
0ab3bd9:https://llvm.googlesource.com/llvm-project/libc/+/0ab3bd9b84283e9cd416640c8216d493e37661d7 [libc] Fix RPC server with independent thread scheduling (#182211)
e1f5afb:https://llvm.googlesource.com/llvm-project/libc/+/e1f5afb872fa53ef3ec04f1537c085b7064e03d9 [libc] Improve GPU allocator lane usage and fences (#182388)
a22533f:https://llvm.googlesource.com/llvm-project/libc/+/a22533f19b7c41f884a851d2d8e3d46da2e394dd [libc][math] Refactor ceil family to header-only (#182121)
46aad01:https://llvm.googlesource.com/llvm-project/libc/+/46aad015ec791ff16a802a6893316fd6ae749e8a [libc][mathvec] Initial commit for LIBC vector math component (#173058)
bd0f475:https://llvm.googlesource.com/llvm-project/libc/+/bd0f475067d1ab2fbef2b4789b97b5a6b3a62ea1 [libc][math][test] add missed mpfr test for `ceilf128` (#182201)
404237b:https://llvm.googlesource.com/llvm-project/libc/+/404237b18f10f4a0d313bee2067bbe0aa33a6cd4 [libc][math] Update BFloat16 basic operation exhaustive tests to include mixed signs. (#182131)
0cac1ae:https://llvm.googlesource.com/llvm-project/libc/+/0cac1aeb49b7b848c0fc3a5182aa282ce07879e7 [libc][math] change bf16fmal to be header-only and constexpr-compat (#181666)
65cf6f8:https://llvm.googlesource.com/llvm-project/libc/+/65cf6f888ea1c64dfd36898f41d1648acc58ea7f [libc][math] Refactor bf16divl to header-only (#181535)
0879f26:https://llvm.googlesource.com/llvm-project/libc/+/0879f26c7df25c47d36aeeea4bf5b442929e8025 [libc][math] Refactor `logbl` to header only (#181659)
86a7bc2:https://llvm.googlesource.com/llvm-project/libc/+/86a7bc2372ae5c1efb0c2188eb100b616dcae0e6 [libc][math] Refactor f16add Math Functions to Header Only (#181777)
f27f6b4:https://llvm.googlesource.com/llvm-project/libc/+/f27f6b41a96d0a188f025c6a854468b3e6016933 [libc][math] Refactor tanpif to header only (#181525)
ce2be83:https://llvm.googlesource.com/llvm-project/libc/+/ce2be8386c9bdc6dedbbcba5cbdd3e1f9383a8d9 [libc][math] Refactor tanf16 to header only (#181523)
93cf7d4:https://llvm.googlesource.com/llvm-project/libc/+/93cf7d47aec01b7399878a59e5f31417fe15694b Revert "[libc] Add getc, ungetc, fflush to enable libc++ iostream on baremetal" (#181931)
451ee34:https://llvm.googlesource.com/llvm-project/libc/+/451ee34fb2b64783aee96f48b558df01e501c771 [libc][math] Refactored bf16fmaf to Header Only (#181919)
d1714b6:https://llvm.googlesource.com/llvm-project/libc/+/d1714b6084b80f5727354b3750f3c0db264ddf03 [libc][math] Fix build failures caused by constexpr (#181920)
2aa4222:https://llvm.googlesource.com/llvm-project/libc/+/2aa4222977381fe8ff805c5840c096b709c643e0 [libc][math] Refactor sincos implementation to header only (#177522)
a29203a:https://llvm.googlesource.com/llvm-project/libc/+/a29203ab9f281d83d72cc997aab3e9eda86d054a [libc][math] Refactor bf16divf implementation to header-only in src/__support/math folder. (#181086)
282a7bf:https://llvm.googlesource.com/llvm-project/libc/+/282a7bf548f181d59c1e187826a79c71a76a352e [libc][math] Refactor logb implementation to header-only (#175719)
4091db9:https://llvm.googlesource.com/llvm-project/libc/+/4091db99ebd706a0c6016702351e412597972e05 [libc][math] Refactor bf16addf to header only (#181230)
211ee55:https://llvm.googlesource.com/llvm-project/libc/+/211ee55ca1b6473e02324db1c6080e82a4125616 [libc] Fix OS when using `-llvm` OS in the triple (#181908)
40e40f9:https://llvm.googlesource.com/llvm-project/libc/+/40e40f94832f1992e75902c2cf094eee35d13082 [libc] Fix warnings for the GPU test suite (#181763)

Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1515694
Original-Revision: be2f72ed8c1f796b1e77e7fd41608d5a34f5d380
GitOrigin-RevId: 302079a35f12fab85ba878c7e4ee36bef7a008ba
Change-Id: I028673b1b49a37ef68bce66bb206f063be747243