1; RUN: opt -mtriple amdgcn-unknown-amdhsa -enable-new-pm=0 -analyze -divergence -use-gpu-divergence-analysis %s | FileCheck %s
2; RUN: opt -mtriple amdgcn-unknown-amdhsa -passes='print<divergence>' -disable-output %s 2>&1 | FileCheck %s
3
4; CHECK: bb3:
5; CHECK: DIVERGENT:       %Guard.bb4 = phi i1 [ true, %bb1 ], [ false, %bb2 ]
6; CHECK: DIVERGENT:       br i1 %Guard.bb4, label %bb4, label %bb5
7
8; Function Attrs: nounwind readnone speculatable
9declare i32 @llvm.amdgcn.workitem.id.x() #0
10
11define protected amdgpu_kernel void @test() {
12bb0:
13  %tid.x = call i32 @llvm.amdgcn.workitem.id.x()
14  %i5 = icmp eq i32 %tid.x, -1
15  br label %bb1
16
17bb1:                                              ; preds = %bb2, %bb0
18  %lsr.iv = phi i32 [ 7, %bb0 ], [ %lsr.iv.next, %bb2 ]
19  br i1 %i5, label %bb2, label %bb3
20
21bb2:                                              ; preds = %bb1
22  %lsr.iv.next = add nsw i32 %lsr.iv, -1
23  %i14 = icmp eq i32 %lsr.iv.next, 0
24  br i1 %i14, label %bb3, label %bb1
25
26bb3:                                              ; preds = %bb2, %bb1
27  %Guard.bb4 = phi i1 [ true, %bb1 ], [ false, %bb2 ]
28  br i1 %Guard.bb4, label %bb4, label %bb5
29
30bb4:                                              ; preds = %bb3
31  br label %bb5
32
33bb5:                                              ; preds = %bb3, %bb4
34  ret void
35}
36
37attributes #0 = { nounwind readnone speculatable }
38