tlively marked an inline comment as done.
tlively added inline comments.

================
Comment at: clang/include/clang/Basic/BuiltinsWebAssembly.def:147
+TARGET_BUILTIN(__builtin_wasm_pmin_f64x2, "V2dV2dV2d", "nc", "simd128")
+TARGET_BUILTIN(__builtin_wasm_pmax_f64x2, "V2dV2dV2d", "nc", "simd128")
 
----------------
aheejin wrote:
> For unimplemented instructions, when do we use `simd128` and when 
> `unimplemented-simd128`?
`unimplemented-simd128` is better when the V8 implementation is expected to lag 
significantly behind the toolchain implementation, but in this case the 
instructions are being implemented in V8 in parallel. Using `simd128` makes it 
much easier for users to experiment with.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D79742/new/

https://reviews.llvm.org/D79742



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