[llvm] Support big endian in llvm-symbolizer's data location dwarf info parser (PR #67284)

[James Henderson via llvm-commits]

================
@@ -0,0 +1,149 @@
+; RUN: llc -filetype=obj -o %t -mtriple=powerpc-aix-ibm-xcoff < %s
+; RUN: llvm-symbolizer --obj=%t 'DATA 0x60' 'DATA 0x61' 'DATA 0x64' 'DATA 0X68' \
+; RUN:   'DATA 0x90' 'DATA 0x94' 'DATA 0X98' | FileCheck %s
+
+; CHECK: bss_global
+; CHECK-NEXT: 96 4
+; CHECK-NEXT: /t.cpp:1
+; CHECK-EMPTY:
+
+; CHECK: bss_global
+; CHECK-NEXT: 96 4
+; CHECK-NEXT: /t.cpp:1
+; CHECK-EMPTY:
+
+; CHECK: data_global
+; CHECK-NEXT: 100 4
+; CHECK-NEXT: /t.cpp:2
+; CHECK-EMPTY:
+
+; CHECK: str
+; CHECK-NEXT: 104 4
+; CHECK-NEXT: /t.cpp:4
+; CHECK-EMPTY:
+
+; FIXME: fix the wrong size 152
+; CHECK: f()::function_global
+; CHECK-NEXT: 144 152
+; CHECK-NEXT: /t.cpp:8
+; CHECK-EMPTY:
+
+; FIXME: fix the wrong size 152
+; CHECK: beta
+; CHECK-NEXT: 148 152
+; CHECK-NEXT: /t.cpp:13
+; CHECK-EMPTY:
+
+; FIXME: fix the wrong size 152
+; CHECK: alpha
+; CHECK-NEXT: 152 152
+; CHECK-NEXT: /t.cpp:12
+; CHECK-EMPTY:
+
+; The case is from `test/tools/llvm-symbolizer/data-location.yaml`, compiled with:
+; clang++ -g -gdwarf-3 -O3 t.cpp  -nostdlib  -target powerpc-aix-ibm-xcoff -S -emit-llvm
----------------
jh7370 wrote:

```suggestion
; clang++ -g -gdwarf-3 -O3 t.cpp -nostdlib -target powerpc-aix-ibm-xcoff -S -emit-llvm
```

https://github.com/llvm/llvm-project/pull/67284