[lld] [llvm] [DTLTO] Make temporary file handling consistent (PR #176807)

[Ben Dunbobbin via llvm-commits]

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@@ -0,0 +1,92 @@
+"""
+Run a command, wait for the "send-signal1" file to appear, then perform an
+action on the DTLTO files in the output directory (for example, locking
+them). The output directory is specified by sys.argv[1], and the action to
+perform is specified by sys.argv[2]. Finally, create the "send-signal2" file.
+
+This script works in tandem with local_codegen_and_wait.py. By coordinating
+via the "send-signal*" files, the scripts ensure that the action is performed
+after all DTLTO backend compilations have completed but before DTLTO itself
+finishes. At this stage, DTLTO temporary files have not yet been cleaned up.
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bd1976bris wrote:

Done now. Thanks.

https://github.com/llvm/llvm-project/pull/176807