[compiler-rt] [test] env -u is not supported on AIX, use `unset` instead (PR #111736)

[Wael Yehia via llvm-commits]

https://github.com/w2yehia updated https://github.com/llvm/llvm-project/pull/111736

>From 46f2fac6f30039146965e298b05bd8828b3ba9e6 Mon Sep 17 00:00:00 2001
From: Wael Yehia <wyehia at ca.ibm.com>
Date: Wed, 9 Oct 2024 18:06:56 +0000
Subject: [PATCH] [test] env -u is not supported on AIX, use `unset` instead

---
 compiler-rt/test/profile/instrprof-tmpdir.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/compiler-rt/test/profile/instrprof-tmpdir.c b/compiler-rt/test/profile/instrprof-tmpdir.c
index 6f323e7e6a01a5..7206df3c2eb0c6 100644
--- a/compiler-rt/test/profile/instrprof-tmpdir.c
+++ b/compiler-rt/test/profile/instrprof-tmpdir.c
@@ -12,7 +12,8 @@
 // RUN: llvm-profdata show ./raw2.profraw | FileCheck %s -check-prefix TMPDIR
 //
 // Check that we fall back to the default path if TMPDIR is missing.
-// RUN: env -u TMPDIR LLVM_PROFILE_FILE="%%t/raw3.profraw" %run %t/binary 2>&1 | FileCheck %s -check-prefix MISSING
+// RUN: %if system-aix %{ unset TMPDIR %}
+// RUN: env %if !system-aix %{ -u TMPDIR %} LLVM_PROFILE_FILE="%%t/raw3.profraw" %run %t/binary 2>&1 | FileCheck %s -check-prefix MISSING
 // RUN: llvm-profdata show ./default.profraw | FileCheck %s -check-prefix TMPDIR
 
 // TMPDIR: Maximum function count: 1