| ; 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, i8* %p, i32 %tmp1 |
| ; CHECK: getelementptr |
| %p2 = getelementptr i8, 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 |
| } |
