https://llvm.org/bugs/show_bug.cgi?id=27296
John Regehr <[email protected]> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution|--- |WORKSFORME --- Comment #5 from John Regehr <[email protected]> --- Well.... I made a fix for this which intersected any constant ranges found in a tree of and instructions on taken branch of a conditional, and in a tree of or instructions found on the false branch of a conditional. This logic fires a lot but the increase in precision is very unimpressive and so are the resulting optimizations. For example across all of SPEC CINT 2006 the binary size is reduced by a few hundred bytes as a result of the added LVI precision. So overall the benefit of this patch doesn't seem to outweigh the extra complexity. -- You are receiving this mail because: You are on the CC list for the bug.
_______________________________________________ llvm-bugs mailing list [email protected] http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-bugs
