nfc, add test case for llvm-symbolizer on XCOFF

Author: Chen Zheng

llvm/test/tools/llvm-symbolizer/xcoff-sd-symbol.ll

@@ -0,0 +1,25 @@
+;; FIXME: use assembly rather than LLVM IR once integrated assembler supports
+;; AIX assembly syntax.
+
+; REQUIRES: powerpc-registered-target
+; RUN: llc -filetype=obj -o %t -mtriple=powerpc-aix-ibm-xcoff -function-sections < %s
+; RUN: llvm-symbolizer --obj=%t 'CODE 0x0' 'CODE 0x20' | \
+; RUN:   FileCheck %s
+
+define void @foo() {
+entry:
+  ret void
+}
+
+define void @foo1() {
+entry:
+  ret void
+}
+
+; CHECK: ??
+; CHECK: ??:0:0
+; CHECK-EMPTY:
+
+; CHECK: ??
+; CHECK: ??:0:0
+; CHECK-EMPTY: