1 ; RUN: opt < %s -S -instcombine | FileCheck %s 2 ; rdar://problem/9267970 3 ; ideally this test will run on a 32-bit host 4 ; must not discard GEPs that might overflow at runtime (aren't inbounds) 5 6 define i32 @main(i32 %argc) { 7 entry: 8 %tmp1 = add i32 %argc, -2 9 %tmp2 = add i32 %argc, 1879048192 10 %p = alloca i8 11 ; CHECK: getelementptr 12 %p1 = getelementptr i8* %p, i32 %tmp1 13 ; CHECK: getelementptr 14 %p2 = getelementptr i8* %p, i32 %tmp2 15 %cmp = icmp ult i8* %p1, %p2 16 br i1 %cmp, label %bbtrue, label %bbfalse 17 bbtrue: ; preds = %entry 18 ret i32 -1 19 bbfalse: ; preds = %entry 20 ret i32 0 21 } 22
