; RUN: opt < %s -passes=globalopt -S | FileCheck %s @G = internal global i32 17 ; [#uses=3] ; CHECK-NOT: @G define void @foo() { %V = load i32, ptr @G ; [#uses=1] store i32 %V, ptr @G ret void ; CHECK-LABEL: @foo( ; CHECK-NEXT: ret void } define i32 @bar() { %X = load i32, ptr @G ; [#uses=1] ret i32 %X ; CHECK-LABEL: @bar( ; CHECK-NEXT: ret i32 17 } @a = internal global ptr null, align 8 ; CHECK-NOT: @a ; PR13968 define void @qux() nounwind { %g = getelementptr ptr, ptr @a, i32 1 %cmp = icmp ne ptr null, @a %cmp2 = icmp eq ptr null, @a %cmp3 = icmp eq ptr null, %g store ptr inttoptr (i64 1 to ptr), ptr @a, align 8 %l = load ptr, ptr @a, align 8 ret void ; CHECK-LABEL: @qux( ; CHECK-NOT: store ; CHECK-NOT: load } @addrspacecast_a = internal global ptr null define void @addrspacecast_user() { ; CHECK-LABEL: @addrspacecast_user ; CHECK-NOT: store ; CHECK-NOT: load %g = addrspacecast ptr @addrspacecast_a to ptr addrspace(1) store ptr inttoptr (i64 1 to ptr), ptr @addrspacecast_a, align 8 %l = load ptr, ptr @addrspacecast_a, align 8 ret void }