1; RUN: llc -march=amdgcn -verify-machineinstrs < %s | FileCheck -check-prefix=SI %s
2; RUN: llc -march=amdgcn -mcpu=tonga -verify-machineinstrs < %s | FileCheck -check-prefix=SI %s
3
4; SI-LABEL: {{^}}br_i1_phi:
5
6; SI: ; %bb
7; SI:    s_mov_b64           [[TMP:s\[[0-9]+:[0-9]+\]]], 0
8
9; SI: ; %bb2
10; SI:    s_mov_b64           [[TMP]], exec
11
12; SI: ; %bb3
13; SI:    s_and_saveexec_b64  {{s\[[0-9]+:[0-9]+\]}}, [[TMP]]
14
15define amdgpu_kernel void @br_i1_phi(i32 %arg) {
16bb:
17  %tidig = call i32 @llvm.amdgcn.workitem.id.x()
18  %cmp = trunc i32 %tidig to i1
19  br i1 %cmp, label %bb2, label %bb3
20
21bb2:                                              ; preds = %bb
22  br label %bb3
23
24bb3:                                              ; preds = %bb2, %bb
25  %tmp = phi i1 [ true, %bb2 ], [ false, %bb ]
26  br i1 %tmp, label %bb4, label %bb6
27
28bb4:                                              ; preds = %bb3
29  %val = load volatile i32, i32 addrspace(1)* undef
30  %tmp5 = mul i32 %val, %arg
31  br label %bb6
32
33bb6:                                              ; preds = %bb4, %bb3
34  ret void
35}
36
37declare i32 @llvm.amdgcn.workitem.id.x() #0
38
39attributes #0 = { nounwind readnone }
40
41; Make sure this won't crash.
42; SI-LABEL: {{^}}vcopy_i1_undef
43; SI: v_cndmask_b32_e64
44; SI: v_cndmask_b32_e64
45define <2 x float> @vcopy_i1_undef(<2 x float> addrspace(1)* %p) {
46entry:
47  br i1 undef, label %exit, label %false
48
49false:
50  %x = load <2 x float>, <2 x float> addrspace(1)* %p
51  %cmp = fcmp one <2 x float> %x, zeroinitializer
52  br label %exit
53
54exit:
55  %c = phi <2 x i1> [ undef, %entry ], [ %cmp, %false ]
56  %ret = select <2 x i1> %c, <2 x float> <float 2.0, float 2.0>, <2 x float> <float 4.0, float 4.0>
57  ret <2 x float> %ret
58}
59