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On Oct 18, 2011, at 2:53 AM, Chandler Carruth wrote: > Hello, > > I'm working on basic-block placement optimizations based on branch probability information. I've run into a stumbling block though. One of the existing passes to do this, essentially a dead pass 'block-placement' operates on the IR, reordering the blocks of the function, and relying on the code generator

Hello, I'm working on basic-block placement optimizations based on branch probability information. I've run into a stumbling block though. One of the existing passes to do this, essentially a dead pass 'block-placement' operates on the IR, reordering the blocks of the function, and relying on the code generator to preserve that order unless it has a reason to rearrange it. This

...most, we should likely add probability awareness to some of these CodeGen passes to turn off (or on) their transforms around unlikely (or likely) edges. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20111018/fb7f9bf7/attachment.html>