Legup Wiki

LLVM Front end

• llvm-gcc
  • GNU Public License 2, a copyleft license
• Alternative: clang
  • Illinois Open Source License, a BSD-like permissive license
    • With new intrinsic lowering, does not pass memset or gsm tests

LLVM

• opt, llvm-ld, llc
  • Illinois Open Source License, a BSD-like permissive license

LegUp

• Open Source License, yet to be decided (maybe new BSD)

Simulator

• Modelsim SE 6
  • Proprietary License, requires license
• Alternative: ModelSim-Altera Starter Edition
  • Proprietary License, but free to download
• Alternative: Icarus Verilog
  • GNU Public License, a copyleft license
    • Slower, out of chstone, only runs dfmul and dfdiv within a minute, don't know if other ones finish
• Alternative: GHDL
  • GNU Public License, a copyleft license
    • Requires VHDL input

Tiger MIPS

• Creative Commons - BY-NC-SA (attribution, non-commercial and share-alike)
  • A non-commercial, copyleft license, although not generally used for code

MIPS Simulator

• GXemul
  • BSD License, a permissive license

Bus

• Avalon (Altera)
  • Proprietary
• Alternative: Wishbone (OpenCores)
  • Public Domain
• Alternative: CoreConnect (IBM)
  • Proprietary
• Alternative: AMBA (Arm)
  • Proprietary