[all-commits] [llvm/llvm-project] fc7604: Instantiate fewer templates in PassManager::addPass()

[aeubanks via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: fc7604a2c0791d81ca097e935d19784b80bd016d
      https://github.com/llvm/llvm-project/commit/fc7604a2c0791d81ca097e935d19784b80bd016d
  Author: Arthur Eubanks <aeubanks at google.com>
  Date:   2021-09-30 (Thu, 30 Sep 2021)

  Changed paths:
    M llvm/include/llvm/IR/PassManager.h
    M llvm/include/llvm/Transforms/Scalar/LoopPassManager.h

  Log Message:
  -----------
  Instantiate fewer templates in PassManager::addPass()

We create many instantiations of PassManager::addPass() in
PassBuilder.cpp.  vector::emplace_back() and make_unique() are both
templated and would have many instantiations based on the number of
times we instantiate addPass().  Now we directly construct the
unique_ptr with the type as the actual unique_ptr type in the vector we
are adding it to, so we only have one unique_ptr constructor
instantiation across all addPass() instantiations and only the
non-templated push_back().

This makes PassBuilder.cpp slightly faster to build.

Reviewed By: rnk

Differential Revision: https://reviews.llvm.org/D110775