I noticed that as well. I think they hid it because it only works on the beta compiler. I also noticed the RAM usage on the Build tab is incorrect, it indicates 10KB of RAM, but there's really only 8KB in SRAM0. The extra 2KB is in SRAM1 and, as far as I can tell, isn't used by the compiler. I'd prefer it wasn't actually, because I'm also targeting an LPC11U37 with 128KB of flash and no SRAM1. I'm using the upper 64KB for data storage with IAP, so the target for the LPC11U35 works perfectly.
UPDATE: It now works out of beta mode, I'd imagine it will be re-enabled now.
Hey guys, I just noticed that support for the DipCortex M0 and M3 boards has been added to the online compiler. That's awesome! Is there a chance we could get support for the Embedded Artists LPC11U35 QuickStart Board? I have my entire project breadboarded with one, and I'd hate to change it. It's very similar to the DipCortex M0 board, but uses an LPC11U35 with 64KB of flash.