[llvm-bugs] [Bug 13203] vqshrn NEON instruction does not support #0 immediate shift

via llvm-bugs llvm-bugs at lists.llvm.org
Tue Jan 19 06:34:23 PST 2016


https://llvm.org/bugs/show_bug.cgi?id=13203

Renato Golin <renato.golin at linaro.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |renato.golin at linaro.org
         Resolution|---                         |INVALID

--- Comment #1 from Renato Golin <renato.golin at linaro.org> ---
ARM ARM states (A8.8.381): "<imm> The immediate value, in the range 1 to <size>
/2. See the description of <size> for how <imm> is encoded."

If the shift value is zero, you can use VQMOVN.

Changing that immediate to non-zero value works as expected.

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