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You should probably send this to llvm-commits; llvm-dev is more for general discussion. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20120519/89a11e83/attachment.html> -------------- next part -------------- A non-text attachment was scrubbed... Name: cafxx.vcf Type: text/x-vcard Size: 230 bytes Desc: not available URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20120519/89a11e83/attachment.vcf>

Hi all, I've just written a small enhancement to SimplifyPHINode. The idea is the following: If we have this: a = phi(X, X, undef, undef, X, undef) X = select cond, sth, a or this: a = phi(X, X, undef, undef, X, undef) X = select cond, a, sth we can replace the phi by 'a' and the select by 'sth'. Why does this work? Well, in those cases where control-flow happens to