[LLVMdev] Pass to remove unused functions

[Chris Lattner]

On May 5, 2009, at 3:48 PM, Villmow, Micah wrote:

> In order to handle a large vector based math library I link in a  
> fairly large bitcode file that might or might not be needed. The  
> problem is that linking in this bitcode file drastically increases  
> the amount of compile time required. Is there a way to remove all  
> functions that are not used after this linking pass? Something  
> similar to die but removes functions from the compilation unit  
> instead of instructions.
>

The -globaldce pass will remove dead internal globals and functions.

-Chris
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