[all-commits] [llvm/llvm-project] d1522d: [-Wcompletion-handler] Support checks with builtins

[Valeriy Savchenko via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: d1522d349f4d4b960ff7a37303103e95aa535af3
      https://github.com/llvm/llvm-project/commit/d1522d349f4d4b960ff7a37303103e95aa535af3
  Author: Valeriy Savchenko <vsavchenko at apple.com>
  Date:   2021-02-09 (Tue, 09 Feb 2021)

  Changed paths:
    M clang/lib/Analysis/CalledOnceCheck.cpp
    M clang/test/SemaObjC/warn-called-once.m

  Log Message:
  -----------
  [-Wcompletion-handler] Support checks with builtins

It is very common to check callbacks and completion handlers for null.
This patch supports such checks using built-in functions:
  * __builtin_expect
  * __builtin_expect_with_probablity
  * __builtin_unpredictable

rdar://73455388

Differential Revision: https://reviews.llvm.org/D96268