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; RUN: opt < %s -passes=globalopt -S | FileCheck %s
@a = internal global ptr null, align 8
; CHECK: @a
; PR13968
define void @qux_no_null_opt() nounwind #0 {
; CHECK-LABEL: @qux_no_null_opt(
; CHECK: getelementptr ptr, ptr @a, i32 1
; CHECK: store ptr inttoptr (i64 1 to ptr), ptr @a
%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
}
define ptr @bar() {
%X = load ptr, ptr @a, align 8
ret ptr %X
; CHECK-LABEL: @bar(
; CHECK: load
}
attributes #0 = { null_pointer_is_valid }
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