[LLVMbugs] [Bug 3826] InstComb assert with vector shift

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.org/bugs/show_bug.cgi?id=3826


Chris Lattner <clattner at apple.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED
            Summary|InstComb assert with vector |InstComb assert with vector
                   |shift and no MMX generated  |shift




--- Comment #4 from Chris Lattner <clattner at apple.com>  2009-03-18 11:33:48 ---
Crash fixed here:
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20090316/075388.html

Please include detailed information on how to reproduce the problem when you
file a bug (e.g. saying to run instcombine on it).  I don't think that the X86
backend has full support for vector shift matching.  This is "documented" in
lib/Target/X86/README-UNIMPLEMENTED.txt.  If you're interested, it should be
straight-forward to add.


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