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...t compares (uninitialized) value of x with 100. Second, if it already can appear, isn't that a bug that should be reported by the compiler? Domagoj -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20060607/eac27aea/attachment.html>

Daniel Berlin wrote: > Nick Lewycky wrote: > >>I found that "undef" was disappearing early into the optimization chain. >>SCCP was the culprit, transforming: >> >> br bool undef, label %T, label %F >> >>into >> >> br bool true, label %T, label %F >> >>While that sounds like a great optimization, it shouldn't be