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Showing content from https://github.com/KhronosGroup/SPIRV-LLVM-Translator/tree/v7.0.0-1 below:

GitHub - KhronosGroup/SPIRV-LLVM-Translator at v7.0.0-1

This repository contains source code for the LLVM/SPIR-V Bi-Directional Translator, a library and tool for translation between LLVM IR and SPIR-V.

The LLVM/SPIR-V Bi-Directional Translator is open source software. You may freely distribute it under the terms of the license agreement found in LICENSE.txt.

The files/directories related to the translator:

• include/LLVMSPIRVLib.h - header file
• lib/SPIRV - library for SPIR-V in-memory representation, decoder/encoder and LLVM/SPIR-V translator
• tools/llvm-spirv - command line utility for translating between LLVM bitcode and SPIR-V binary

Master branch of this repo is aimed to be buildable with the latest LLVM version.

The translator can be built with the latest(nightly) package of LLVM. For Ubuntu and Debian systems LLVM provides repositories with nightly builds at http://apt.llvm.org/. For example the latest package for Ubuntu 16.04 can be installed with the following commands:

sudo add-apt-repository "deb http://apt.llvm.org/xenial/ llvm-toolchain-xenial main"
sudo apt-get update
sudo apt-get install llvm-7-dev

The intalled version of LLVM will be used by default for out-of-tree build of the translator.

git clone https://github.com/KhronosGroup/SPIRV-LLVM-Translator.git
mkdir SPIRV-LLVM-Translator/build && cd SPIRV-LLVM-Translator/build
cmake ..
make llvm-spirv -j`nproc`

If you have a custom build(based on the latest version) of LLVM libraries you can link the translator against it.

git clone https://github.com/KhronosGroup/SPIRV-LLVM-Translator.git
mkdir SPIRV-LLVM-Translator/build && cd SPIRV-LLVM-Translator/build
cmake .. -DLLVM_DIR=<llvm_build_dir>/lib/cmake/llvm/
make llvm-spirv -j`nproc`

Where llvm_build_dir is the LLVM build directory.

The translator can be built as a regular LLVM subproject. To do that you need to clone it to llvm/projects or llvm/tools directory.

git clone http://llvm.org/git/llvm.git
cd llvm/project
git clone https://github.com/KhronosGroup/SPIRV-LLVM-Translator.git

Run(re-run) cmake as usually for LLVM. After that you should have llvm-spirv and check-llvm-spirv targets available.

mkdir llvm/build && cd llvm/build 
cmake ..
make llvm-spirv -j`nproc`

All tests related to the translator are placed in the test directory.

Execute the following command to run translator tests:

To translate between LLVM IR and SPIR-V:

1. Execute the following command to translate input.bc to input.spv

2. Execute the following command to translate input.spv to input.bc

3. Other options accepted by llvm-spirv

   • -o file_name - to specify output name
   • -spirv-debug - output debugging information
   • -spirv-text - read/write SPIR-V in an internal textual format for debugging purpose. The textual format is not defined by SPIR-V spec.
   • -help - to see full list of options

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