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2011 Mar 14
1
[LLVMdev] Vector select/compare support in LLVM
David,
The problem with the sparse representation is that it is word-width dependent. For 32-bit data-types, the mask is the 32nd bit, while fore 64bit types the mask is the 64th bit.
How would you legalize the mask for the following code ?
%mask = cmp nge <4 x float> %A, %B ; <4 x i1>
%val = select <4 x i1>% mask, <4 x double> %X, %Y ; <4 x