[ELF][Driver] Fix precedence of symbol ordering file and CGProfile

This patch is a fix for https://bugs.llvm.org/show_bug.cgi?id=41804.
We try to solve the precedence of user-specified symbol ordering file and C3 ordering provided as call graph. It deals with two case:
(1) When both --symbol-ordering-file=<file> and --call-graph-order-file=<file> are present, whichever flag comes later will take precedence.
(2) When only --symbol-ordering-file=<file> is present, it takes precedence over implicit call graph (CGProfile) generated by CGProfilePass enabled in new pass manager.

git-svn-id: https://llvm.org/svn/llvm-project/lld/trunk@361190 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed
tree: 3c1e84c9af3ab12167ec54b55a57566ef6e8c730
  1. .arcconfig
  2. .clang-format
  3. .gitignore
  4. CMakeLists.txt
  5. CODE_OWNERS.TXT
  6. COFF/
  7. Common/
  8. ELF/
  9. LICENSE.TXT
  10. MinGW/
  11. README.md
  12. cmake/
  13. docs/
  14. include/
  15. lib/
  16. test/
  17. tools/
  18. unittests/
  19. utils/
  20. wasm/
README.md

LLVM Linker (lld)

This directory and its subdirectories contain source code for the LLVM Linker, a modular cross platform linker which is built as part of the LLVM compiler infrastructure project.

lld is open source software. You may freely distribute it under the terms of the license agreement found in LICENSE.txt.

Benchmarking

In order to make sure various developers can evaluate patches over the same tests, we create a collection of self contained programs.

It is hosted at https://s3-us-west-2.amazonaws.com/linker-tests/lld-speed-test.tar.xz

The current sha256 is 10eec685463d5a8bbf08d77f4ca96282161d396c65bd97dc99dbde644a31610f.