1 ; RUN: opt < %s -S -O2 -unroll-runtime=true | FileCheck %s
3 ; Check runtime unrolling prologue can be promoted by LICM pass.
9 ; CHECK: br i1 %lcmp.mod
12 define void @unroll(i32 %iter, i32* %addr1, i32* %addr2) nounwind {
17 %iv1 = phi i32 [ 0, %entry ], [ %inc1, %loop1.latch ]
18 %offset1 = getelementptr i32, i32* %addr1, i32 %iv1
19 store i32 %iv1, i32* %offset1, align 4
20 br label %loop2.header
26 %iv2 = phi i32 [ 0, %loop2.header ], [ %inc2, %loop2 ]
27 %offset2 = getelementptr i32, i32* %addr2, i32 %iv2
28 store i32 %iv2, i32* %offset2, align 4
29 %inc2 = add i32 %iv2, 1
30 %exitcnd2 = icmp uge i32 %inc2, %iter
31 br i1 %exitcnd2, label %exit2, label %loop2
37 %inc1 = add i32 %iv1, 1
38 %exitcnd1 = icmp uge i32 %inc1, 1024
39 br i1 %exitcnd1, label %exit, label %loop1