[LLVMbugs] [Bug 6336] SelectionDAG does not handle scalar second operand to sign_extend_inreg correctly

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=6336

Dan Gohman <gohman at apple.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |INVALID

--- Comment #4 from Dan Gohman <gohman at apple.com> 2010-03-08 17:53:54 CST ---
This patch isn't right.  Vector SIGN_EXTEND_INREG is expected to have a vector
type for the second operand.  A while ago I did try to change it to use a
scalar type here, and this change simplified some of the code, however it was
problematic because Legalize decides what to do by looking at this type, and on
most targets, it needs to do different things for vector and scalar.

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