[SYCL][ESIMD] Deprecate ESIMD Emulator (intel#10506)

Author: turinevgeny

buildbot/configure.py

@@ -238,7 +238,7 @@ def main():
     parser.add_argument("--hip-platform", type=str, choices=['AMD', 'NVIDIA'], default='AMD', help="choose hardware platform for HIP backend")
     parser.add_argument("--host-target", default='X86',
                         help="host LLVM target architecture, defaults to X86, multiple targets may be provided as a semi-colon separated string")
-    parser.add_argument("--enable-esimd-emulator", action='store_true', help="build with ESIMD emulation support")
+    parser.add_argument("--enable-esimd-emulator", action='store_true', help="build with ESIMD emulation support (deprecated)")
     parser.add_argument("--enable-all-llvm-targets", action='store_true', help="build compiler with all supported targets, it doesn't change runtime build")
     parser.add_argument("--no-assertions", action='store_true', help="build without assertions")
     parser.add_argument("--docs", action='store_true', help="build Doxygen documentation")

sycl/doc/EnvironmentVariables.md

@@ -106,7 +106,7 @@ The value of this environment variable is a comma separated list of filters, whe
 - `opencl`
 - `cuda`
 - `hip`
-- `esimd_emulator`
+- `esimd_emulator` (Deprecated)
 - `*`
 
 Possible values of `device_type` are:

sycl/doc/extensions/supported/sycl_ext_intel_esimd/README.md

@@ -17,7 +17,7 @@ Please see the additional resources on the Intel DPC++ project's github:
 
 1) [ESIMD Extension Specification](./sycl_ext_intel_esimd.md)
 1) [ESIMD API/doxygen reference](https://intel.github.io/llvm-docs/doxygen/group__sycl__esimd.html)
-1) [ESIMD Emulator](./sycl_ext_intel_esimd_emulator.md)
+1) [ESIMD Emulator](./sycl_ext_intel_esimd_emulator.md) (deprecated)
 1) [Examples](./examples/README.md)
 1) [ESIMD end-to-end LIT tests](https://github.com/intel/llvm/blob/sycl/sycl/test-e2e/ESIMD/)
 1) [Implementation and API Restrictions](./sycl_ext_intel_esimd.md#implementation-restrictions)

sycl/doc/extensions/supported/sycl_ext_intel_esimd/sycl_ext_intel_esimd.md

@@ -37,7 +37,7 @@
 
 ## Other content:
 * [ESIMD API/doxygen reference](https://intel.github.io/llvm-docs/doxygen/group__sycl__esimd.html)
-* [ESIMD Emulator](./sycl_ext_intel_esimd_emulator.md)
+* [ESIMD Emulator](./sycl_ext_intel_esimd_emulator.md) (deprecated)
 * [Examples](./examples/README.md)
 * [ESIMD LIT tests - working code examples](https://github.com/intel/llvm/blob/sycl/sycl/test-e2e/ESIMD/)
 

sycl/doc/extensions/supported/sycl_ext_intel_esimd/sycl_ext_intel_esimd_emulator.md

@@ -1,5 +1,9 @@
 # ESIMD kernel execution emulation on host.
 
+## Deprecation note
+
+ESIMD Emulator feature is deprecated and will be removed in the future.
+
 ## Introduction
 
 ESIMD implementation provides a feature to execute ESIMD kernels on the host

sycl/plugins/esimd_emulator/pi_esimd_emulator.cpp

@@ -2226,6 +2226,10 @@ pi_result piPluginInit(pi_plugin *PluginInit) {
     return PI_ERROR_INVALID_VALUE;
   }
 
+  std::cout
+      << "WARNING: The ESIMD Emulator is deprecated and will be removed in the "
+         "future.\n";
+
   // Check that the major version matches in PiVersion and SupportedVersion
   _PI_PLUGIN_VERSION_CHECK(PluginInit->PiVersion, SupportedVersion);