1*9880d681SAndroid Build Coastguard Worker; RUN: opt < %s -S -instcombine | FileCheck %s 2*9880d681SAndroid Build Coastguard Worker; rdar://problem/9267970 3*9880d681SAndroid Build Coastguard Worker; ideally this test will run on a 32-bit host 4*9880d681SAndroid Build Coastguard Worker; must not discard GEPs that might overflow at runtime (aren't inbounds) 5*9880d681SAndroid Build Coastguard Worker 6*9880d681SAndroid Build Coastguard Workerdefine i32 @main(i32 %argc) { 7*9880d681SAndroid Build Coastguard Workerentry: 8*9880d681SAndroid Build Coastguard Worker %tmp1 = add i32 %argc, -2 9*9880d681SAndroid Build Coastguard Worker %tmp2 = add i32 %argc, 1879048192 10*9880d681SAndroid Build Coastguard Worker %p = alloca i8 11*9880d681SAndroid Build Coastguard Worker; CHECK: getelementptr 12*9880d681SAndroid Build Coastguard Worker %p1 = getelementptr i8, i8* %p, i32 %tmp1 13*9880d681SAndroid Build Coastguard Worker; CHECK: getelementptr 14*9880d681SAndroid Build Coastguard Worker %p2 = getelementptr i8, i8* %p, i32 %tmp2 15*9880d681SAndroid Build Coastguard Worker %cmp = icmp ult i8* %p1, %p2 16*9880d681SAndroid Build Coastguard Worker br i1 %cmp, label %bbtrue, label %bbfalse 17*9880d681SAndroid Build Coastguard Workerbbtrue: ; preds = %entry 18*9880d681SAndroid Build Coastguard Worker ret i32 -1 19*9880d681SAndroid Build Coastguard Workerbbfalse: ; preds = %entry 20*9880d681SAndroid Build Coastguard Worker ret i32 0 21*9880d681SAndroid Build Coastguard Worker} 22