| ; RUN: opt < %s -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 (i32* getelementptr (i32* null, | |
| i32 1) to i32) ; <i32> [#uses=1] | |
| ret i32 %div_zero | |
| } | |