Mordante marked 2 inline comments as done.
Mordante added a comment.

In D89210#2332143 <https://reviews.llvm.org/D89210#2332143>, @aaron.ballman 
wrote:

> LGTM aside from a documentation request, but you may want to wait a few days 
> before committing in case Richard or John have opinions.

Thanks for the review!



================
Comment at: clang/include/clang/Basic/AttrDocs.td:1815
 
+  switch(i) {
+    [[likely]] case 1:    // This value is likely
----------------
aaron.ballman wrote:
> Can you add a second example that shows what to expect from fallthrough 
> behavior? Perhaps something like:
> ```
> switch (i) {
> [[likely]] case 0: // This value and code path is likely
>   ...
>   [[fallthrough]];
> case 1: // No likelihood attribute, code path is likely due to fallthrough
>   break;
> case 2: // No likelihood attribute, code path is neutral
>   [[fallthrough]];
> [[unlikely]] default: // This value and code path are both unlikely
>   break;
> }
> ```
I've added this example with minor modifications. Note `case 1` is neutral 
since falling through has no effect.


================
Comment at: clang/lib/CodeGen/CGStmt.cpp:375
+                                     ArrayRef<const Attr *> Attrs) {
+  // clang-format off
   switch (S->getStmtClass()) {
----------------
aaron.ballman wrote:
> Mordante wrote:
> > aaron.ballman wrote:
> > > How ugly is the default clang-format formatting for this? If it's not too 
> > > bad, perhaps we just re-format the switch statement as a whole?
> > It looks fine default formatted, I just thought we wanted to keep it 
> > compact. But I've no problem with keeping the code default formatted.
> I tend to prefer whatever the default formatting is just so we don't have 
> formatting comments all over the place (but I'm fine if the unique formatting 
> is important for code readability).
I'll keep that in mind.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D89210/new/

https://reviews.llvm.org/D89210

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