[PATCH] D46754: [AMDGPU] Add intrinsics for 16 bit interpolation

Tim Corringham via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Fri May 18 12:07:19 PDT 2018


timcorringham added a comment.



> Or is this bit controlling the weird load from memory? The manual isn't particularly clear to me. I see mention of LDs loads, but also op_sel control of destination bits

Yes, the high bit controls the LDS access. As all the operands to interp_p1_f16 are the same types as for the 32 bit variant, I don't know of any way to deduce the value of the high bit if it isn't specified explicitly.


Repository:
  rL LLVM

https://reviews.llvm.org/D46754





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