[all-commits] [llvm/llvm-project] a2e596: [LegacyPM] Reduce number of calls to getName

[aengelke via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: a2e596bdf8cc951727f1f0156c56ff90cb00e8a0
      https://github.com/llvm/llvm-project/commit/a2e596bdf8cc951727f1f0156c56ff90cb00e8a0
  Author: Alexis Engelke <engelke at in.tum.de>
  Date:   2023-04-13 (Thu, 13 Apr 2023)

  Changed paths:
    M llvm/lib/IR/LegacyPassManager.cpp

  Log Message:
  -----------
  [LegacyPM] Reduce number of calls to getName

Repeatedly calling getName adds some overhead, which can be easily
avoided by querying the name just once per function. The improvements
are rather small (~0.5% back-end time in a compile-time optimized
setting), but also very easy to achieve.

Note that getting the name should be entirely avoidable in the common
case, but would require more substantial changes.

Reviewed By: MaskRay

Differential Revision: https://reviews.llvm.org/D148145