[llvm] Use a more proper idiom for "the output file doesn't matter". NFC. (PR #134280)

[via llvm-commits]

https://github.com/Sterling-Augustine created https://github.com/llvm/llvm-project/pull/134280

As in the description. Follow up to PR #134179.

>From d2d61c84a912a3e51d4ecc8ab30c473951d22291 Mon Sep 17 00:00:00 2001
From: Sterling Augustine <saugustine at google.com>
Date: Thu, 3 Apr 2025 09:58:49 -0700
Subject: [PATCH] Use a more proper idiom for "the output file doesn't matter".
 NFC.

---
 .../CodeGen/AMDGPU/llvm.amdgcn.global.load.lds.err.ll     | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/llvm/test/CodeGen/AMDGPU/llvm.amdgcn.global.load.lds.err.ll b/llvm/test/CodeGen/AMDGPU/llvm.amdgcn.global.load.lds.err.ll
index f04c7ec9884bd..3abc5bd33d8af 100644
--- a/llvm/test/CodeGen/AMDGPU/llvm.amdgcn.global.load.lds.err.ll
+++ b/llvm/test/CodeGen/AMDGPU/llvm.amdgcn.global.load.lds.err.ll
@@ -1,7 +1,7 @@
-; RUN: not --crash llc -o - -mtriple=amdgcn -mcpu=gfx810 %s 2>&1 | FileCheck --ignore-case %s
-; RUN: not --crash llc -o - -global-isel -mtriple=amdgcn -mcpu=gfx810 %s 2>&1 | FileCheck --ignore-case %s
-; RUN: not --crash llc -o - -mtriple=amdgcn -mcpu=gfx1100 %s 2>&1 | FileCheck --ignore-case %s
-; RUN: not --crash llc -o - -global-isel -mtriple=amdgcn -mcpu=gfx1100 %s 2>&1 | FileCheck --ignore-case %s
+; RUN: not --crash llc -filetype=null -mtriple=amdgcn -mcpu=gfx810 %s 2>&1 | FileCheck --ignore-case %s
+; RUN: not --crash llc -filetype=null -global-isel -mtriple=amdgcn -mcpu=gfx810 %s 2>&1 | FileCheck --ignore-case %s
+; RUN: not --crash llc -filetype=null -mtriple=amdgcn -mcpu=gfx1100 %s 2>&1 | FileCheck --ignore-case %s
+; RUN: not --crash llc -filetype=null -global-isel -mtriple=amdgcn -mcpu=gfx1100 %s 2>&1 | FileCheck --ignore-case %s
 ;
 ; CHECK: LLVM ERROR: Cannot select