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; RUN: opt < %s -passes=globalopt -S | FileCheck %s
@G = internal global i32 17 ; <ptr> [#uses=3]
; CHECK-NOT: @G
define void @foo() {
%V = load i32, ptr @G ; <i32> [#uses=1]
store i32 %V, ptr @G
ret void
; CHECK-LABEL: @foo(
; CHECK-NEXT: ret void
}
define i32 @bar() {
%X = load i32, ptr @G ; <i32> [#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
}
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