[llvm-commits] Trampoline changes
nicholas at mxc.ca
Sat Sep 8 15:59:08 PDT 2007
Duncan Sands wrote:
> It is easy to construct testcases for which this works, but sadly I was unable to get
> the optimization to occur even once in a trampoline heavy real-world program without
> jacking-up the inlining limit hugely (to 100000; 10000 wasn't enough). Still, I'm
> hoping that it may sometimes be useful.
Why does changing the inliner threshold help? Are you talking about
inlining the trampoline itself or the llvm.init.trampoline intrinsic?
Could we adjust the weights in the inliner so that it does it more
often, seeing as a trampoline call is much more expensive than a regular
Would you mind sending a small before and after example for the
transformation implemented by your instcombine patch?
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