[llvm] [lit][NFC] Avoid unintended -EMPTY suffix in check prefix (PR #99690)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-testing-tools

Author: Paul Kirth (ilovepi)

<details>
<summary>Changes</summary>

FileCheck has special handline for the `-EMPTY` suffix, that should
match empty lines. Overloading the suffix can be a source of confusion
when reading tests. Additionally, the current implementation seems to
match the following expressions, which appears to be a bug in FileCheck.


---
Full diff: https://github.com/llvm/llvm-project/pull/99690.diff


1 Files Affected:

- (modified) llvm/utils/lit/tests/Inputs/shtest-env/env-calls-env.txt (+3-3) 


``````````diff
diff --git a/llvm/utils/lit/tests/Inputs/shtest-env/env-calls-env.txt b/llvm/utils/lit/tests/Inputs/shtest-env/env-calls-env.txt
index e4997b1250ed3..26150c413dc03 100644
--- a/llvm/utils/lit/tests/Inputs/shtest-env/env-calls-env.txt
+++ b/llvm/utils/lit/tests/Inputs/shtest-env/env-calls-env.txt
@@ -1,10 +1,10 @@
 # Check that internal env can call internal env.
 
 # RUN: env env %{python} print_environment.py \
-# RUN: | FileCheck -check-prefix=CHECK-2-EMPTY %s
+# RUN: | FileCheck -check-prefix=CHECK-2-EMPTY-ARGS %s
 #
-# CHECK-2-EMPTY: BAR = 2
-# CHECK-2-EMPTY: FOO = 1
+# CHECK-2-EMPTY-ARGS: BAR = 2
+# CHECK-2-EMPTY-ARGS: FOO = 1
 
 # RUN: env FOO=2 env BAR=1 %{python} print_environment.py \
 # RUN: | FileCheck -check-prefix=CHECK-2-VAL %s

``````````

</details>


https://github.com/llvm/llvm-project/pull/99690