[all-commits] [llvm/llvm-project] 768a25: [mlir] Tunnel LLVM_USE_LINKER through to the stand...

[Stella Laurenzo via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 768a251587e41e9298658b2bbcc5846e46580d77
      https://github.com/llvm/llvm-project/commit/768a251587e41e9298658b2bbcc5846e46580d77
  Author: Stella Laurenzo <stellaraccident at gmail.com>
  Date:   2022-06-05 (Sun, 05 Jun 2022)

  Changed paths:
    M mlir/test/Examples/standalone/lit.local.cfg
    M mlir/test/Examples/standalone/test.toy
    M mlir/test/lit.site.cfg.py.in

  Log Message:
  -----------
  [mlir] Tunnel LLVM_USE_LINKER through to the standalone example build.

When building in debug mode, the link time of the standalone sample is excessive, taking upwards of a minute if using BFD. This at least allows lld to be used if the main invocation was configured that way. On my machine, this gets a standalone test that requires a relink to run in ~13s for Debug mode. This is still a lot, but better than it was. I think we may want to do something about this test: it adds a lot of latency to a normal compile/test cycle and requires a bunch of arg fiddling to exclude.

I think we may end up wanting a `check-mlir-heavy` target that can be used just prior to submit, and then make `check-mlir` just run unit/lite tests. More just thoughts for the future (none of that is done here).

Reviewed By: bondhugula, mehdi_amini

Differential Revision: https://reviews.llvm.org/D126585