LLVM 2.1, llvm-gcc 4.2 was beta). Since LLVM 2.1, the llvm-gcc 4.2 front-end
has made leaps and bounds and is now at least as good as 4.0 in virtually every
area, and is better in several areas (for example, exception handling
-correctness, support for Ada and Fortran). We strongly recommend that you
+correctness, support for Ada and Fortran, better ABI compatibility, etc). We
+strongly recommend that you
migrate from llvm-gcc 4.0 to llvm-gcc 4.2 in this release cycle because
<b>LLVM 2.2 is the last release that will support llvm-gcc 4.0</b>: LLVM 2.3
will only support the llvm-gcc 4.2 front-end.</p>
llvm-gcc by default, but can be accessed through 'opt'.</li>
<li>Dan Gohman contributed several enhancements to Loop Strength Reduction (LSR)
-to make it more aggressive with SSE intrinsics.</li>
+to make it more aggressive with SSE intrinsics and when induction variables are
+used by non-memory instructions.</li>
<li>Evan added support for simple exit value substitution to LSR.</li>