[all-commits] [llvm/llvm-project] d36b26: [ELF] Optimization to LinkerScript::computeInputSe...

[Andrew Ng via All-commits]

  Branch: refs/heads/master
  Home:   https://github.com/llvm/llvm-project
  Commit: d36b2649e5e4d90a3f439e2a16057cd75566c669
      https://github.com/llvm/llvm-project/commit/d36b2649e5e4d90a3f439e2a16057cd75566c669
  Author: Andrew Ng <andrew.ng at sony.com>
  Date:   2020-01-16 (Thu, 16 Jan 2020)

  Changed paths:
    M lld/ELF/LinkerScript.cpp

  Log Message:
  -----------
  [ELF] Optimization to LinkerScript::computeInputSections NFC

Moved the section name check ahead of any filename matching or
exclusion. Firstly, this reduces the need to retrieve the filename and
secondly, reduces the amount of potentially expensive filename pattern
matching if such rules are present in the linker script.

The impact of this change is particularly significant when linking
objects built with -ffunction-sections and -fstack-size-section, using a
linker script that includes non-trivial filename patterns. In a number
of such cases, the link time is halved.

Differential Revision: https://reviews.llvm.org/D72775