Skip to content

[CAS] Restrict the CAS size when running lit testing #167024

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 1 commit into from
Nov 7, 2025
+6 −0
Merged

[CAS] Restrict the CAS size when running lit testing #167024

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
6 changes: 6 additions & 0 deletions llvm/test/lit.cfg.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -804,6 +804,12 @@ def host_unwind_supports_jit():
config.available_features.add("use_msan_with_origins")


# Restrict the size of the on-disk CAS for tests. This allows testing in
# constrained environments (e.g. small TMPDIR). It also prevents leaving
# behind large files on file systems that do not support sparse files if a test
# crashes before resizing the file.
config.environment["LLVM_CAS_MAX_MAPPING_SIZE"] = "%d" % (100 * 1024 * 1024)

# Some tools support an environment variable "OBJECT_MODE" on AIX OS, which
# controls the kind of objects they will support. If there is no "OBJECT_MODE"
# environment variable specified, the default behaviour is to support 32-bit
Expand Down