The Intel Graphics Installer for Linux update 1.0.7 is announced this week. It brings you the latest graphics stack for Intel. The installer is an automated one and can download and install the updates by itself invoking apt commands in the background.
Latest drivers are available for Ubuntu 14.04 and Fedora 20. As I could see, this also includes libllvm 3.5
Download the installer for your platform here.
On Ubuntu Trusty, you can run the following commands to add the new repository for the Intel drivers and get the latest packages (the installer also does the same):
$ echo "deb https://download.01.org/gfx/ubuntu/14.04/main trusty main #Intel Graphics drivers" | sudo tee -a /etc/apt/sources.list.d/intelgraphics.list > /dev/null $ sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys A902DDA375E52366 $ sudo apt-get update $ sudo apt-get upgrade