[llvm] Revert changes to llvm-string stdin test and XFAIL on AIX (PR #160821)

[Mark Danial via llvm-commits]

https://github.com/madanial0 created https://github.com/llvm/llvm-project/pull/160821

Xfail testcase on AIX until echo -n bug is fixed, revert changes made to testcase

>From e3bbae3c11c27f5bb6bc04e6bd6c4a0232064425 Mon Sep 17 00:00:00 2001
From: Mark Danial <mark.danial at ibm.com>
Date: Fri, 26 Sep 2025 03:21:23 -0400
Subject: [PATCH] Revert changes to llvm-string stdin test and XFAIL on AIX

---
 llvm/test/tools/llvm-strings/stdin.test | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/llvm/test/tools/llvm-strings/stdin.test b/llvm/test/tools/llvm-strings/stdin.test
index 3c60123ca8921..ef6cd131f5879 100644
--- a/llvm/test/tools/llvm-strings/stdin.test
+++ b/llvm/test/tools/llvm-strings/stdin.test
@@ -1,13 +1,13 @@
+; XFAIL: target={{.*}}-aix{{.*}}
+
 ## Show that llvm-strings can handle stdin input properly.
 
 ## Case 1: output with single string.
-RUN: echo -n "abcdefg" > %t
-RUN: llvm-strings %t - | FileCheck %s --check-prefix=CASE1 --implicit-check-not={{.}}
+RUN: echo -n "abcdefg" | llvm-strings - | FileCheck %s --check-prefix=CASE1 --implicit-check-not={{.}}
 CASE1: abcdefg
 
 ## Case 2: output too short for string.
-RUN: echo -n "abc" > %t
-RUN: llvm-strings %t - | FileCheck %s --implicit-check-not={{.}} --allow-empty
+RUN: echo -n "abc" | llvm-strings - | FileCheck %s --implicit-check-not={{.}} --allow-empty
 
 ## Case 3: output with new line.
 RUN: printf "abcd\nefgh" | llvm-strings - | FileCheck %s --check-prefix=CASE3 --implicit-check-not={{.}}
@@ -21,5 +21,4 @@ CASE4-NEXT: ghij
 CASE4-NEXT: klmn
 
 ## Case 5: no file name specified is equivalent to explicitly requesting stdin.
-RUN: echo -n "abcdefg" > %t
-RUN: llvm-strings %t - | FileCheck %s --check-prefix=CASE1 --implicit-check-not={{.}}
+RUN: echo -n "abcdefg" | llvm-strings | FileCheck %s --check-prefix=CASE1 --implicit-check-not={{.}}