1; RUN: llc < %s -march=nvptx64 -mcpu=sm_35 -disable-cgp | FileCheck %s
2; Disable CGP which also folds branches, so that only BranchFolding is under
3; the spotlight.
4
5target datalayout = "e-i64:64-v16:16-v32:32-n16:32:64"
6target triple = "nvptx64-nvidia-cuda"
7
8define void @foo(i32 %x, float* %output) {
9; CHECK-LABEL: .visible .func foo(
10; CHECK-NOT: bra.uni
11; CHECK-NOT: LBB0_
12  %1 = icmp eq i32 %x, 1
13  br i1 %1, label %then, label %else
14
15then:
16  br label %merge
17
18else:
19  br label %merge
20
21merge:
22  store float 2.0, float* %output
23  ret void
24}
25
26; PR24299. no crash
27define ptx_kernel void @hoge() #0 {
28; CHECK-LABEL: .visible .entry hoge(
29bb:
30  br i1 undef, label %bb1, label %bb4
31
32bb1:                                              ; preds = %bb1, %bb
33  %tmp = phi i64 [ %tmp2, %bb1 ], [ undef, %bb ]
34  %tmp2 = add nsw i64 %tmp, 1
35  %tmp3 = icmp sle i64 %tmp, 0
36  br i1 %tmp3, label %bb1, label %bb4
37
38bb4:                                              ; preds = %bb4, %bb1, %bb
39  br label %bb4
40}
41