I worked at Chromatic, we built a series of 2-wide VLIWs, writing a compiler (actually just the assembler) that could extract that parallelism was pretty easy,

I worked at Chromatic, we built a series of 2-wide VLIWs, writing a compiler (actually just the assembler) that could extract that parallelism was pretty easy, just some low level register flow analysis, I can imagine getting something like 6 way would be a lot harder though