[SYCL][ESIMD] Bring vc-intrinsics sources (#1930)

VC intrinsics library is required by LowerESIMD pass.

Author: asi-sc

sycl/CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.2)
+cmake_minimum_required(VERSION 3.14)
 
 project(sycl-solution)
 # Requirements
@@ -184,6 +184,35 @@ install(DIRECTORY ${OPENCL_INCLUDE}/CL
   COMPONENT opencl-headers
 )
 
+# vc-intrinsics could have been added earlier from llvm/projects
+if (NOT TARGET LLVMGenXIntrinsics)
+  if (NOT DEFINED LLVMGenXIntrinsics_SOURCE_DIR)
+    message(STATUS "vc-intrinsics are missing. Will try to download them from github.com")
+
+    include(FetchContent)
+    FetchContent_Declare(vc-intrinsics
+      GIT_REPOSITORY https://github.com/intel/vc-intrinsics.git
+      GIT_TAG        cce6e48c28eb850d7dadd30841c0d95f009bbca1
+    )
+    FetchContent_MakeAvailable(vc-intrinsics)
+    FetchContent_GetProperties(vc-intrinsics)
+
+    set(LLVMGenXIntrinsics_SOURCE_DIR ${vc-intrinsics_SOURCE_DIR})
+    set(LLVMGenXIntrinsics_BINARY_DIR ${vc-intrinsics_BINARY_DIR})
+  else()
+    # -DLLVMGenXIntrinsics_SOURCE_DIR is provided
+    message(STATUS "vc-intrinsics are added manually ${LLVMGenXIntrinsics_SOURCE_DIR}")
+
+    set(LLVMGenXIntrinsics_BINARY_DIR ${CMAKE_BINARY_DIR}/vc-intrinsics-build)
+    add_subdirectory(${LLVMGenXIntrinsics_SOURCE_DIR} ${LLVMGenXIntrinsics_BINARY_DIR})
+  endif()
+
+  target_include_directories(LLVMGenXIntrinsics
+    PUBLIC $<BUILD_INTERFACE:${LLVMGenXIntrinsics_SOURCE_DIR}/GenXIntrinsics/include>
+    PUBLIC $<BUILD_INTERFACE:${LLVMGenXIntrinsics_BINARY_DIR}/GenXIntrinsics/include>
+  )
+endif()
+
 option(SYCL_BUILD_PI_CUDA
   "Enables the CUDA backend for the Plugin Interface" OFF)
 

sycl/doc/GetStartedGuide.md

@@ -22,7 +22,7 @@ and a wide range of compute accelerators such as GPU and FPGA.
 ## Prerequisites
 
 * `git` - [Download](https://git-scm.com/downloads)
-* `cmake` version 3.2 or later - [Download](http://www.cmake.org/download/)
+* `cmake` version 3.14 or later - [Download](http://www.cmake.org/download/)
 * `python` - [Download](https://www.python.org/downloads/release/python-2716/)
 * `ninja` -
 [Download](https://github.com/ninja-build/ninja/wiki/Pre-built-Ninja-packages)