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1; RUN: opt -mtriple amdgcn-unknown-amdhsa -analyze -divergence -use-gpu-divergence-analysis %s | FileCheck %s
2
3; CHECK: bb6:
4; CHECK: DIVERGENT:       %.126.i355.i = phi i1 [ false, %bb5 ], [ true, %bb4 ]
5; CHECK: DIVERGENT:       br i1 %.126.i355.i, label %bb7, label %bb8
6
7; Function Attrs: nounwind readnone speculatable
8declare i32 @llvm.amdgcn.workitem.id.x() #0
9
10define protected amdgpu_kernel void @_Z23krnl_GPUITSFitterKerneli() {
11bb0:
12  %i4 = call i32 @llvm.amdgcn.workitem.id.x()
13  %i5 = icmp eq i32 %i4, -1
14  br label %bb1
15
16bb1:                                              ; preds = %bb3, %bb0
17  %lsr.iv = phi i32 [ %i1, %bb3 ], [ 7, %bb0 ]
18  br i1 %i5, label %bb2, label %bb3
19
20bb2:                                              ; preds = %bb1
21  %lsr.iv.next = add nsw i32 %lsr.iv, -1
22  %i14 = icmp eq i32 %lsr.iv.next, 0
23  br label %bb3
24
25bb3:                                              ; preds = %bb2, %bb1
26  %i1 = phi i32 [ %lsr.iv.next, %bb2 ], [ 0, %bb1 ]
27  %i2 = phi i1 [ false, %bb2 ], [ true, %bb1 ]
28  %i3 = phi i1 [ %i14, %bb2 ], [ true, %bb1 ]
29  br i1 %i3, label %bb4, label %bb1
30
31bb4:                                              ; preds = %bb3
32  br i1 %i2, label %bb5, label %bb6
33
34bb5:                                              ; preds = %bb4
35  br label %bb6
36
37bb6:                                              ; preds = %bb5, %bb4
38  %.126.i355.i = phi i1 [ false, %bb5 ], [ true, %bb4 ]
39  br i1 %.126.i355.i, label %bb7, label %bb8
40
41bb7:                                              ; preds = %bb6
42  br label %bb8
43
44bb8:                                              ; preds = %bb7, %bb6
45  ret void
46}
47
48attributes #0 = { nounwind readnone speculatable }
49