Imported Upstream version 5.18.0.205

Former-commit-id: 7f59f7e792705db773f1caecdaa823092f4e2927

external/llvm/test/Transforms/GlobalOpt/deadglobal.ll

@@ -0,0 +1,28 @@
+; RUN: opt < %s -globalopt -S | FileCheck %s
+
+@G1 = internal global i32 123            ; <i32*> [#uses=1]
+@A1 = internal alias i32, i32* @G1
+
+; CHECK-NOT: @G1
+; CHECK: @G2
+; CHECK-NOT: @G3
+
+; CHECK-NOT: @A1
+
+define void @foo1() {
+; CHECK: define void @foo
+; CHECK-NEXT: ret
+        store i32 1, i32* @G1
+        ret void
+}
+
+@G2 = linkonce_odr constant i32 42
+
+define void @foo2() {
+; CHECK-LABEL: define void @foo2(
+; CHECK-NEXT: store
+        store i32 1, i32* @G2
+        ret void
+}
+
+@G3 = linkonce_odr constant i32 42