[llvm-commits] [PATCH] Fix bugs in promotion code for CTPOP and fiends

[Jakob Stoklund Olesen]

SelectionDAGLegalize::PromoteNode() has code to promote CTPOP, CTLZ,  
and CTTZ operations. I don't think that code has ever been used, it  
contains some trivial bugs in the value types used.

The attached patch fixes these issues, so the operation is performed  
as NVT, and then truncated back to OVT.

The blackfin processor has a CTPOP instruction for i32 registers only.  
The promotion code is needed to support CTPOP for i16 registers as well.

Please review before I commit.


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