[libcxx-commits] [PATCH] D155649: [libc++] Make sure we use the libdispatch backend on Apple platforms

[Nikolas Klauser via Phabricator via libcxx-commits]

philnik added inline comments.


================
Comment at: libcxx/include/__algorithm/pstl_backends/cpu_backends/libdispatch.h:181-182
     _Reduction __reduction) {
+  if (__first == __last)
+    return __init;
+
----------------
I don't understand this change. Is this just an optimization, or is something here assuming a size > 0?


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D155649/new/

https://reviews.llvm.org/D155649