1; RUN: llc < %s -march=amdgcn -mcpu=verde -verify-machineinstrs | FileCheck --check-prefix=SI --check-prefix=FUNC %s
2; RUN: llc < %s -march=amdgcn -mcpu=tonga -verify-machineinstrs | FileCheck --check-prefix=SI --check-prefix=FUNC %s
3
4; FUNC-LABEL: {{^}}break_inserted_outside_of_loop:
5
6; SI: [[LOOP_LABEL:[A-Z0-9]+]]:
7; Lowered break instructin:
8; SI: s_or_b64
9; Lowered Loop instruction:
10; SI: s_andn2_b64
11; s_cbranch_execnz [[LOOP_LABEL]]
12; SI: s_endpgm
13define void @break_inserted_outside_of_loop(i32 addrspace(1)* %out, i32 %a) {
14main_body:
15  %tid = call i32 @llvm.amdgcn.mbcnt.lo(i32 -1, i32 0) #0
16  %0 = and i32 %a, %tid
17  %1 = trunc i32 %0 to i1
18  br label %ENDIF
19
20ENDLOOP:
21  store i32 0, i32 addrspace(1)* %out
22  ret void
23
24ENDIF:
25  br i1 %1, label %ENDLOOP, label %ENDIF
26}
27
28
29; FUNC-LABEL: {{^}}phi_cond_outside_loop:
30; FIXME: This could be folded into the s_or_b64 instruction
31; SI: s_mov_b64 [[ZERO:s\[[0-9]+:[0-9]+\]]], 0
32; SI: [[LOOP_LABEL:[A-Z0-9]+]]
33; SI: v_cmp_ne_i32_e32 vcc, 0, v{{[0-9]+}}
34
35; SI_IF_BREAK instruction:
36; SI: s_or_b64 [[BREAK:s\[[0-9]+:[0-9]+\]]], vcc, [[ZERO]]
37
38; SI_LOOP instruction:
39; SI: s_andn2_b64 exec, exec, [[BREAK]]
40; SI: s_cbranch_execnz [[LOOP_LABEL]]
41; SI: s_endpgm
42
43define void @phi_cond_outside_loop(i32 %b) {
44entry:
45  %tid = call i32 @llvm.amdgcn.mbcnt.lo(i32 -1, i32 0) #0
46  %0 = icmp eq i32 %tid , 0
47  br i1 %0, label %if, label %else
48
49if:
50  br label %endif
51
52else:
53  %1 = icmp eq i32 %b, 0
54  br label %endif
55
56endif:
57  %2 = phi i1 [0, %if], [%1, %else]
58  br label %loop
59
60loop:
61  br i1 %2, label %exit, label %loop
62
63exit:
64  ret void
65}
66
67declare i32 @llvm.amdgcn.mbcnt.lo(i32, i32) #0
68
69attributes #0 = { nounwind readnone }
70