[PATCH] D52320: AMDGPU: add __builtin_amdgcn_update_dpp

[Matt Arsenault via Phabricator via cfe-commits]

arsenm added inline comments.


================
Comment at: lib/CodeGen/CGBuiltin.cpp:11313-11315
+  case AMDGPU::BI__builtin_amdgcn_update_dpp: {
+    llvm::SmallVector<llvm::Value *, 6> Args;
+    for (unsigned I = 0; I != 6; ++I)
----------------
b-sumner wrote:
> arsenm wrote:
> > The only difference between this and mov_dpp is the argument count and the intrinsic ID, so you can combine the cases
> We should really drop mov_dpp.  It will be easier to do so if we keep the cases separate. 
We could also emit the mov_dpp with the new intrinsic, using I think undef for the extra operand?


https://reviews.llvm.org/D52320