[all-commits] [llvm/llvm-project] 1113fb: [CodeGen] Improve likelihood branch weights

[mordante via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: 1113fbf44c2250621548e278d2a1e11ab2b2d63d
      https://github.com/llvm/llvm-project/commit/1113fbf44c2250621548e278d2a1e11ab2b2d63d
  Author: Mark de Wever <koraq at xs4all.nl>
  Date:   2020-10-04 (Sun, 04 Oct 2020)

  Changed paths:
    M clang/lib/CodeGen/CGStmt.cpp
    M clang/lib/CodeGen/CodeGenFunction.cpp
    M clang/lib/CodeGen/CodeGenFunction.h
    A clang/test/CodeGenCXX/attr-likelihood-if-vs-builtin-expect.cpp

  Log Message:
  -----------
  [CodeGen] Improve likelihood branch weights

Bruno De Fraine discovered some issues with D85091. The branch weights
generated for `logical not` and `ternary conditional` were wrong. The
`logical and` and `logical or` differed from the code generated of
`__builtin_predict`.

Adjusted the generated code for the likelihood to match
`__builtin_predict`. The patch is based on Bruno's suggestions.

Differential Revision: https://reviews.llvm.org/D88363