Imported Upstream version 5.18.0.179

Former-commit-id: 67aa10e65b237e1c4537630979ee99ebe1374215

external/llvm/test/Linker/comdat13.ll

@@ -0,0 +1,30 @@
+; RUN: llvm-link -S %s %p/Inputs/comdat13.ll -o - | FileCheck %s
+
+; In Inputs/comdat13.ll a function not in the $foo comdat (zed) references an
+; internal function in the comdat $foo.
+; The IR would be ilegal on ELF ("relocation refers to discarded section"),
+; but COFF linkers seem to just duplicate the comdat.
+
+$foo = comdat any
+@foo = internal global i8 0, comdat
+define i8* @bar() {
+       ret i8* @foo
+}
+
+; CHECK: $foo = comdat any
+
+; CHECK: @foo = internal global i8 0, comdat
+; CHECK: @foo.1 = internal global i8 1, comdat($foo)
+
+; CHECK:      define i8* @bar() {
+; CHECK-NEXT:   ret i8* @foo
+; CHECK-NEXT: }
+
+; CHECK:      define i8* @zed() {
+; CHECK-NEXT:   call void @bax()
+; CHECK-NEXT:   ret i8* @foo.1
+; CHECK-NEXT: }
+
+; CHECK:      define internal void @bax() comdat($foo) {
+; CHECK-NEXT:   ret void
+; CHECK-NEXT: }