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llvm / llvm-project / lld / 38304e32c1e6a3735dec7ffeff1469d78a39d2d4
commit38304e32c1e6a3735dec7ffeff1469d78a39d2d4[log] [tgz]
authorSingleAccretion <62474226+SingleAccretion@users.noreply.github.com>Sun Feb 25 19:43:11 2024 +0300
committerCopybara-Service <copybara-worker@google.com>Sun Feb 25 08:49:00 2024 -0800
tree241716c3ee7b0c71fe21b9008a84f02eacbab80c
parentb7f3fe4c3a2330a65a2fdae820aef29e6155c8ad [diff]
[lld][WebAssembly] Add `--no-growable-memory` (#82890)

We recently added `--initial-heap` - an option that allows one to up the
initial memory size without the burden of having to know exactly how
much is needed.

However, in the process of implementing support for this in Emscripten
(https://github.com/emscripten-core/emscripten/pull/21071), we have
realized that `--initial-heap` cannot support the use-case of
non-growable memories by itself, since with it we don't know what to set
`--max-memory` to.

We have thus agreed to move the above work forward by introducing
another option to the linker (see
https://github.com/emscripten-core/emscripten/pull/21071#discussion_r1491755616),
one that would allow users to explicitly specify they want a
non-growable memory.

This change does this by introducing `--no-growable-memory`: an option
that is mutally exclusive with `--max-memory` (for simplicity - we can
also decide that it should override or be overridable by `--max-memory`.
In Emscripten a similar mix of options results in `--no-growable-memory`
taking precedence). The option specifies that the maximum memory size
should be set to the initial memory size, effectively disallowing memory
growth.

Closes #81932.

GitOrigin-RevId: cb4f94db83d9c4373b485493ef079e318f63bf13
6 files changed
tree: 241716c3ee7b0c71fe21b9008a84f02eacbab80c
  1. cmake/
  2. COFF/
  3. Common/
  4. docs/
  5. ELF/
  6. include/
  7. MachO/
  8. MinGW/
  9. test/
  10. tools/
  11. unittests/
  12. utils/
  13. wasm/
  14. .clang-format
  15. .clang-tidy
  16. .gitignore
  17. CMakeLists.txt
  18. CODE_OWNERS.TXT
  19. LICENSE.TXT
  20. README.md
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.