[all-commits] [llvm/llvm-project] fb2a97: [Support] Change MapVector's default template para...

[Fangrui Song via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: fb2a971c015fa991b47aa8d93bd97379c012cb68
      https://github.com/llvm/llvm-project/commit/fb2a971c015fa991b47aa8d93bd97379c012cb68
  Author: Fangrui Song <i at maskray.me>
  Date:   2023-07-24 (Mon, 24 Jul 2023)

  Changed paths:
    M lld/MachO/UnwindInfoSection.cpp
    M llvm/include/llvm/ADT/MapVector.h
    M llvm/lib/Analysis/ModuleSummaryAnalysis.cpp
    M mlir/lib/IR/AsmPrinter.cpp

  Log Message:
  -----------
  [Support] Change MapVector's default template parameter to SmallVector<*, 0>

SmallVector<*, 0> is often a better replacement for std::vector :
both the object size and the code size are smaller.
(SmallMapVector uses SmallVector as well, but it is not common.)

clang size decreases by 0.0226%.
instructions:u decreases 0.037% when compiling a sqlite3 amalgram.

Reviewed By: JDevlieghere

Differential Revision: https://reviews.llvm.org/D156016