…ages_docs

* origin/sycl: (1092 commits)
  [CI] Add clang-format checker to pre-commit checks (intel#1163)
  [SYCL][CUDA] Initial CUDA backend support (intel#1091)
  [USM] Align OpenCL USM extension header with the specification (intel#1162)
  [SYCL][NFC] Fix unreferenced variable warning (intel#1158)
  [SYCL] Fix __spirv_GroupBroadcast overloads (intel#1152)
  [SYCL] Add llvm/Demangle link dependency for llvm-no-spir-kernel (intel#1156)
  [SYCL] LowerWGScope pass should not be skipped when -O0 is used
  [SYCL][Doc][USM] Add refactored pointer and device queries to USM spec (intel#1118)
  [SYCL] Update the kernel parameter rule to is-trivially-copy-construc… (intel#1144)
  [SYCL] Move internal headers to source dir (intel#1136)
  [SYCL] Forbid declaration of non-const static variables inside kernels (intel#1141)
  [SYCL][NFC] Remove idle space (intel#1148)
  [SYCL] Improve the error mechanism of llvm-no-spir-kernel (intel#1068)
  [SYCL] Added CTS test config (intel#1063)
  [SYCL] Implement check-sycl-deploy target (intel#1142)
  [SYCL] Preserve original message and code of kernel/program build result (intel#1108)
  [SYCL] Fix LIT after LLVM change in community
  Translate LLVM's cmpxchg instruction to SPIR-V
  Add volatile qualifier for atom_ builtins
  Fix -Wunused-variable warnings
  ...