[all-commits] [llvm/llvm-project] b3417d: [TableGen] Change std::vector to SmallVector

Nadav Rotem via All-commits all-commits at lists.llvm.org
Thu Jul 16 11:33:18 PDT 2020


  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: b3417d80aed708d64e810ed9c5d0d0fb84b65715
      https://github.com/llvm/llvm-project/commit/b3417d80aed708d64e810ed9c5d0d0fb84b65715
  Author: Nadav Rotem <nadav256 at gmail.com>
  Date:   2020-07-16 (Thu, 16 Jul 2020)

  Changed paths:
    M llvm/utils/TableGen/CodeGenDAGPatterns.h

  Log Message:
  -----------
  [TableGen] Change std::vector to SmallVector

The size of VTList that is pushed into this container is usually 1, but
often 6 or 7. Change the vector to SmallVector to eliminate frequent
mallocs.  This happens hundreds of thousands of times in each tablegen
execution during the LLVM/clang build.

https://reviews.llvm.org/D83849




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