[gold] Test we don't strip globals when producing relocatables.

lld was broken in this regard (PR33097). The gold plugin gets this
right so, no changes needed, but better adding a test.

llvm-svn: 311541

llvm/test/tools/gold/X86/relocatable.ll

@@ -0,0 +1,26 @@
+; RUN: llvm-as %s -o %t1.o
+; RUN: %gold -plugin %llvmshlibdir/LLVMgold.so \
+; RUN:    -r %t1.o -o %t
+; RUN: llvm-readobj -symbols %t | FileCheck %s
+
+; CHECK: Symbol {
+; CHECK:   Name: foo
+; CHECK-NEXT:   Value: 0x0
+; CHECK-NEXT:   Size: 1
+; CHECK-NEXT:   Binding: Global
+; CHECK-NEXT:   Type: Function
+; CHECK-NEXT:   Other: 0
+; CHECK-NEXT:   Section: .text.foo
+; CHECK-NEXT: }
+
+target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-unknown-linux-gnu"
+
+define void @foo() {
+  call void @bar()
+  ret void
+}
+
+define internal void @bar() {
+  ret void
+}