Add support for bitcount intrinsics Issue #2777 #4245
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Adds support for the llvm.ctpop, llvm.ctlz and llvm.cttz intrinsics.
catamorphism
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Dec 23, 2012
Add support for bitcount intrinsics Issue #2777
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RalfJung
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Adds support for the llvm.ctpop (count set bits), llvm.ctlz (count leading zeroes) and llvm.cttz (count trailing zeroes) intrinsics for i8, i16, i32 and i64. They are useful for implementing certain compression/decompression algorithms, chess engines and so on.
The ctlz/cttz intrinsics as implemented do not support the last parameter that decides if 0 needs to be defined or not and always sets it to 'false' which means that all inputs give defined output.