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Switch builds to LLVM 16 and update docs

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Switch builds to use LLVM 16. Updated the documentation to treat LLVM 16 as default.
Refreshed parts of buildIGC.sh regarding supported versions. Fixed a bug when setting a variable in buildIGC.sh to a default value.

Force enabled exceptions for VC. This is a workaround while we're investigating why they're disabled.
This commit is contained in:
Michał Krause
2025-09-15 12:28:08 +00:00
committed by igcbot
parent d8e9c579df
commit fd46428741
4 changed files with 25 additions and 23 deletions
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26
documentation/build_ubuntu.md
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@ -43,7 +43,7 @@ Also, depending on the Ubuntu release, SPIRV-LLVM-Translator available through a
For **LLVM**, **LLD** and **Clang** packages please visit this [link](https://apt.llvm.org/) to download and install desired version.
For `apt` package manager you can use this command:
```shell
sudo apt-get install llvm-15 llvm-15-dev clang-15 liblld-15 liblld-15-dev libllvmspirvlib15 libllvmspirvlib-15-dev
sudo apt-get install llvm-16 llvm-16-dev clang-16 liblld-16 liblld-16-dev libllvmspirvlib16 libllvmspirvlib-16-dev
```
As of now **OpenCL Clang** is still needed to be built and installed manually. Sources are available [here](https://github.com/intel/opencl-clang). You can use out-of-tree build method with LLVM and Clang preinstalled.
**VC Intrinsics** is a lightweight library that is built from sources with IGC and there is no package for it.
@ -75,13 +75,13 @@ mkdir -p $IGC_WORKSPACE_DIR && cd $IGC_WORKSPACE_DIR
Download all dependencies
```shell
git clone https://github.com/intel/vc-intrinsics vc-intrinsics
git clone -b llvmorg-15.0.7 https://github.com/llvm/llvm-project llvm-project
git clone -b ocl-open-150 https://github.com/intel/opencl-clang llvm-project/llvm/projects/opencl-clang
git clone -b llvm_release_150 https://github.com/KhronosGroup/SPIRV-LLVM-Translator llvm-project/llvm/projects/llvm-spirv
git clone -b llvmorg-16.0.6 https://github.com/llvm/llvm-project llvm-project
git clone -b ocl-open-160 https://github.com/intel/opencl-clang llvm-project/llvm/projects/opencl-clang
git clone -b llvm_release_160 https://github.com/KhronosGroup/SPIRV-LLVM-Translator llvm-project/llvm/projects/llvm-spirv
git clone https://github.com/KhronosGroup/SPIRV-Tools.git SPIRV-Tools
git clone https://github.com/KhronosGroup/SPIRV-Headers.git SPIRV-Headers
```
These commands will set up a workspace with LLVM 15. If you wish to use any other version please refer to the [component revision table](#Revision-table)
These commands will set up a workspace with LLVM 16. If you wish to use any other version please refer to the [component revision table](#Revision-table)
Correct directory tree looks like this:
```
@ -103,7 +103,7 @@ There are several flags for these builds modes that you can pass to
cmake command.
- `IGC_OPTION__LLVM_PREFERRED_VERSION` -- sets version of LLVM that
will be used by IGC (defaults to "15.0.7").
will be used by IGC (defaults to "16.0.6").
- `IGC_OPTION__LLVM_MODE` -- select LLVM mode for IGC to use. Possible
values are: **Source**, **Prebuilds** or empty (that is
default). **Source** mode uses LLVM sources to build LLVM in-tree with
@ -181,9 +181,9 @@ Also note that these tests require **Debug** IGC build.
| Version | Product quality |
|:----------------:|-----------------|
| LLVM 16/Clang 16 | Experimental |
| LLVM 15/Clang 15 | **Production** |
| LLVM 14/Clang 14 and older| Experimental |
| LLVM 16/Clang 16 | **Production** |
| LLVM 15/Clang 15 | Experimental |
| LLVM 14/Clang 14 and older | Experimental |
| Terminology | Description |
|-------------------|-|
@ -195,11 +195,11 @@ Also note that these tests require **Debug** IGC build.
LLVM version determines what branches are used when building dependencies.
When checking out the components refer to the following table, replace **XX** with the LLVM version used:
| Repository name | Version specific | Branch | LLVM 15 example |
| Repository name | Version specific | Branch | LLVM 16 example |
|-----------------------|:----------------:|----------------------|------------------|
| llvm-project | - | release/**XX**.x | release/15.x |
| llvm-project | - | release/**XX**.x | release/16.x |
| vc-intrinsics | no | master | master |
| SPIRV-Tools | no | master | master |
| SPIRV-Headers | no | master | master |
| SPIRV-LLVM-Translator | yes | llvm_release_**XX**0 | llvm_release_150 |
| opencl-clang | yes | ocl-open-**XX**0 | ocl-open-150 |
| SPIRV-LLVM-Translator | yes | llvm_release_**XX**0 | llvm_release_160 |
| opencl-clang | yes | ocl-open-**XX**0 | ocl-open-160 |