; RUN: opt < %s -passes=instcombine -S | grep "ret i32 0"
; PR4424
declare void @ext()
define i32 @foo(i32 %ptr) {
entry:
%zero = sub i32 %ptr, %ptr ; <i32> [#uses=1]
%div_zero = sdiv i32 %zero, ptrtoint (ptr getelementptr (i32, ptr null,
i32 1) to i32) ; <i32> [#uses=1]
ret i32 %div_zero
}