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yxsamliu edited this page Nov 4, 2015 · 3 revisions

LLVM/SPIR-V Bi-Directional Translator

The khronos/spirv-3.6.1 branch of this repository contains source code for the LLVM/SPIR-V Bi-Directional Translator, a library for translating between LLVM 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.

Currently it accepts LLVM bitcodes compatible with SPIR 1.2/2.0 standards, and SPIR-V friendly format.

Directory Structure

The files/directories are related to the translator:

Build Instructions

Run Instructions for llvm-spirv

llvm-spirv only accepts SPIR 1.2/2.0 or LLVM bitcode following a SPIR-V friendly format.

The Open Source SPIR producer can be used to compile OpenCL 1.2/2.0 C source code to SPIR 1.2/2.0.

To translate between SPIR 1.2/2.0 and SPIR-V:

  1. Follow the instructions provided by the open source SPIR producer website to use clang to compile OpenCL C source code to SPIR 1.2/2.0 binary.

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

    llvm-spirv input.bc

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

    llvm-spirv -r input.spv

  4. 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.
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