================
@@ -37,6 +37,9 @@
 
 Notes
 -----
+  Failed-fix dumps use the Unix ``diff`` command (not ``git diff``); ensure
----------------
zeyi2 wrote:

Personally I don't think this is necessary. 

On Windows, `lit` already searches for `diff.exe` alongside the other required 
Unix tools, first through `LLVM_LIT_TOOLS_DIR/PATH` and then in Git for 
Windows. `LLVM_LIT_TOOLS_DIR` is also documented for this purpose, so this note 
would mainly apply to manual invocations outside lit. Since this script is 
mainly used for running test files in LLVM CI, a configuration-time sanity 
check with a clear diagnostic would seem more useful than documenting the 
dependency here.

cc @vbvictor for their opinions here.



https://github.com/llvm/llvm-project/pull/214681
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