Add a test showing the ppc code sequence for getting a function pointer.

This would have found the miscompile in r209638.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209820 91177308-0d34-0410-b5e6-96231b3b80d8

test/CodeGen/PowerPC/func-addr.ll

@@ -0,0 +1,21 @@
+; RUN: llc -mtriple powerpc64-linux < %s | FileCheck %s
+
+define void @foo()  {
+  ret void
+}
+declare i32 @bar(i8*)
+
+; CHECK-LABEL: {{^}}zed:
+; CHECK:        addis 3, 2, .LC1@toc@ha
+; CHECK-NEXT:   ld 3, .LC1@toc@l(3)
+; CHECK-NEXT:   bl bar
+
+
+; CHECK-LABEL: .section        .toc,"aw",@progbits
+; CHECK:       .LC1:
+; CHECK-NEXT:  .tc foo[TC],foo
+
+define  void @zed() {
+  call i32 @bar(i8* bitcast (void ()* @foo to i8*))
+  ret void
+}