update version numbers for 180 branch (#506)

Author: wenju-he

CMakeLists.txt

@@ -1,5 +1,10 @@
 cmake_minimum_required(VERSION 3.13.4)
 
+if(NOT DEFINED BASE_LLVM_VERSION)
+  set(BASE_LLVM_VERSION 17)
+endif(NOT DEFINED BASE_LLVM_VERSION)
+set(OPENCL_CLANG_VERSION ${BASE_LLVM_VERSION}.0)
+
 if(NOT DEFINED OPENCL_CLANG_BUILD_EXTERNAL)
   # check if we build inside llvm or not
   if(CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
@@ -152,9 +157,9 @@ if(NOT USE_PREBUILT_LLVM)
         )
     endif()
 
-    set(CLANG_BASE_REVISION master)
-    set(SPIRV_BASE_REVISION master)
-    set(TARGET_BRANCH "ocl-open-110")
+    set(CLANG_BASE_REVISION release/18.x)
+    set(SPIRV_BASE_REVISION llvm_release_180)
+    set(TARGET_BRANCH "ocl-open-180")
 
     apply_patches(${CLANG_SOURCE_DIR}
                   ${CMAKE_CURRENT_SOURCE_DIR}/patches/clang

README.md

@@ -25,9 +25,9 @@ Before the build all dependencies must be downloaded and laid out as follows:
 This can be done using the following commands:
 ```bash
 cd <workspace>
-git clone https://github.com/llvm/llvm-project.git .
-git clone https://github.com/KhronosGroup/SPIRV-LLVM-Translator.git
-git clone https://github.com/intel/opencl-clang.git
+git clone https://github.com/llvm/llvm-project.git . -b release/18.x
+git clone https://github.com/KhronosGroup/SPIRV-LLVM-Translator.git -b llvm_release_180
+git clone https://github.com/intel/opencl-clang.git -b ocl-open-180
 ```
 
 Then we need to create a build directory and run the build:
@@ -60,7 +60,7 @@ documented in [Embedding LLVM in your project](https://llvm.org/docs/CMake.html#
 Commands to checkout sources and build:
 ```bash
 cd <workspace>
-git clone https://github.com/intel/opencl-clang.git
+git clone https://github.com/intel/opencl-clang.git -b ocl-open-180
 mkdir build && cd build
 cmake ../opencl-clang
 make all -j`nproc`
@@ -70,13 +70,13 @@ make all -j`nproc`
 
 ##### Preferred LLVM version
 
-By default, opencl-clang's cmake script is searching for LLVM which is built
-based on the latest verion of current branch. You can override target version of
-LLVM by using the `PREFERRED_LLVM_VERSION` cmake option:
+By default, opencl-clang's cmake script is searching for LLVM 17. You can
+override target version of LLVM by using the `PREFERRED_LLVM_VERSION` cmake
+option:
 
 Example:
 ```bash
-cmake -DPREFERRED_LLVM_VERSION="18" ../opencl-clang
+cmake -DPREFERRED_LLVM_VERSION="17" ../opencl-clang
 ```
 
 ##### Custom LLVM installation