Imported Upstream version 5.18.0.179

Former-commit-id: 67aa10e65b237e1c4537630979ee99ebe1374215

external/llvm/test/Transforms/DeadArgElim/linkage.ll

@@ -0,0 +1,21 @@
+; RUN: opt < %s -deadargelim -S | FileCheck %s
+
+; rdar://11546243
+%struct.A = type { i8 }
+
+define available_externally void @_Z17externallyDefinedP1A(%struct.A* %a) {
+entry:
+  call void @_Z3foov()
+  ret void
+}
+
+declare void @_Z3foov()
+
+define void @_Z4testP1A(%struct.A* %a) {
+; CHECK: @_Z4testP1A
+; CHECK: @_Z17externallyDefinedP1A(%struct.A* %a)
+
+entry:
+  call void @_Z17externallyDefinedP1A(%struct.A* %a)
+  ret void
+}