[LLVMdev] Optimization of calls to functions without side effects (from Kaleidoscope example)

[Dan Gohman]

On Nov 16, 2010, at 1:19 AM, Arnaud Allard de Grandmaison wrote:

> Hi Dan,
> 
> The tutorial in r119335 does not build : the basicAA pass creation needs to be declared. This is addressed with the 'missing-include' patch, which updates both source code & documentation.

Applied, thanks.

> The second point is that beside basicAA, to get the optimizations as shown in the tutorial, (sin(x)*sin(x) -> sin(x)^2), some attributes need to be set on 'sin'. Patch 'set-attribute' address this. Of course, this is probably not the right way to achieve this in real life with a real programming language / environment, but within the scope of the kaleidoscope, this should be sufficient. This patch updates both the source code & documentation.

Did the code in the tutorial work at some point? Offhand, I wouldn't expect
any of my recent changes to have affected this. I'm reluctant to fix this
without understanding how the original code was intended to work.

Dan