| ; RUN: opt < %s -S -instcombine | FileCheck %s | |
| ; rdar://problem/9267970 | |
| ; ideally this test will run on a 32-bit host | |
| ; must not discard GEPs that might overflow at runtime (aren't inbounds) | |
| define i32 @main(i32 %argc) { | |
| entry: | |
| %tmp1 = add i32 %argc, -2 | |
| %tmp2 = add i32 %argc, 1879048192 | |
| %p = alloca i8 | |
| ; CHECK: getelementptr | |
| %p1 = getelementptr i8* %p, i32 %tmp1 | |
| ; CHECK: getelementptr | |
| %p2 = getelementptr i8* %p, i32 %tmp2 | |
| %cmp = icmp ult i8* %p1, %p2 | |
| br i1 %cmp, label %bbtrue, label %bbfalse | |
| bbtrue: ; preds = %entry | |
| ret i32 -1 | |
| bbfalse: ; preds = %entry | |
| ret i32 0 | |
| } |