[llvm] Fix `llvm/test/DebugInfo/Generic/discriminated-union.ll` on big-endian targets (PR #125849)

[via llvm-commits]

https://github.com/beetrees created https://github.com/llvm/llvm-project/pull/125849

Fixes the failure of the [Solaris/sparcv9 buildbot](https://lab.llvm.org/buildbot/#/builders/13/builds/5103) caused by #125578.

cc @rorth @tromey @dwblaikie

>From fdc019cac60c08a16928d5193186c56f948ff73a Mon Sep 17 00:00:00 2001
From: beetrees <b at beetr.ee>
Date: Wed, 5 Feb 2025 12:57:19 +0000
Subject: [PATCH] Fix `llvm/test/DebugInfo/Generic/discriminated-union.ll` on
 big-endian targets

---
 llvm/test/DebugInfo/Generic/discriminated-union.ll | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/llvm/test/DebugInfo/Generic/discriminated-union.ll b/llvm/test/DebugInfo/Generic/discriminated-union.ll
index 592f2152ae68201..0267580eb0cbf36 100644
--- a/llvm/test/DebugInfo/Generic/discriminated-union.ll
+++ b/llvm/test/DebugInfo/Generic/discriminated-union.ll
@@ -1,8 +1,8 @@
 ; RUN: %llc_dwarf -O0 -filetype=obj < %s > %t
-; RUN: llvm-dwarfdump -v -debug-info %t | FileCheck %s
+; RUN: llvm-dwarfdump -v -debug-info %t | FileCheck %s --check-prefix %if target-byteorder-big-endian %{ CHECK-BE %} %else %{ CHECK-LE %}
 
 ; RUN: %llc_dwarf --try-experimental-debuginfo-iterators -O0 -filetype=obj < %s > %t
-; RUN: llvm-dwarfdump -v -debug-info %t | FileCheck %s
+; RUN: llvm-dwarfdump -v -debug-info %t | FileCheck %s --check-prefix %if target-byteorder-big-endian %{ CHECK-BE %} %else %{ CHECK-LE %}
 
 ; Check for a variant part that has two members, one of which has a
 ; discriminant value.
@@ -22,7 +22,8 @@
 ;         CHECK: DW_AT_alignment
 ;         CHECK: DW_AT_data_member_location [DW_FORM_data1]	(0x00)
 ;     CHECK: DW_TAG_variant
-;       CHECK: DW_AT_discr_value [DW_FORM_block1]	(<0x10> 00 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 )
+;       CHECK-LE: DW_AT_discr_value [DW_FORM_block1]	(<0x10> 00 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 )
+;       CHECK-BE: DW_AT_discr_value [DW_FORM_block1]	(<0x10> 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 00 )
 ;       CHECK: DW_TAG_member
 ;         CHECK: DW_AT_type
 ;         CHECK: DW_AT_alignment