1 ; RUN: llc -march=amdgcn -verify-machineinstrs < %s | FileCheck -check-prefix=GCN %s
3 declare i1 @llvm.amdgcn.class.f32(float, i32)
5 ; Produces error after adding an implicit def to v_cndmask_b32
7 ; GCN-LABEL: {{^}}vcc_shrink_vcc_def:
8 ; GCN: v_cmp_eq_u32_e64 vcc, s{{[0-9]+}}, 0{{$}}
9 ; GCN: v_cndmask_b32_e32 v{{[0-9]+}}, 1.0, v{{[0-9]+}}, vcc
10 define amdgpu_kernel void @vcc_shrink_vcc_def(float %arg, i32 %arg1, float %arg2, i32 %arg3) {
12 %tmp = icmp sgt i32 %arg1, 4
13 %c = icmp eq i32 %arg3, 0
14 %tmp4 = select i1 %c, float %arg, float 1.000000e+00
15 %tmp5 = fcmp ogt float %arg2, 0.000000e+00
16 %tmp6 = fcmp olt float %arg2, 1.000000e+00
17 %tmp7 = fcmp olt float %arg, %tmp4
18 %tmp8 = and i1 %tmp5, %tmp6
19 %tmp9 = and i1 %tmp8, %tmp7
20 br i1 %tmp9, label %bb1, label %bb2
23 store volatile i32 0, i32 addrspace(1)* undef
30 ; The undef flag on the condition src must be preserved on the
31 ; implicit vcc use to avoid verifier errors.
33 ; GCN-LABEL: {{^}}preserve_condition_undef_flag:
35 define amdgpu_kernel void @preserve_condition_undef_flag(float %arg, i32 %arg1, float %arg2) {
37 %tmp = icmp sgt i32 %arg1, 4
38 %undef = call i1 @llvm.amdgcn.class.f32(float undef, i32 undef)
39 %tmp4 = select i1 %undef, float %arg, float 1.000000e+00
40 %tmp5 = fcmp ogt float %arg2, 0.000000e+00
41 %tmp6 = fcmp olt float %arg2, 1.000000e+00
42 %tmp7 = fcmp olt float %arg, undef
43 %tmp8 = and i1 %tmp5, %tmp6
44 %tmp9 = and i1 %tmp8, %tmp7
45 br i1 %tmp9, label %bb1, label %bb2
48 store volatile i32 0, i32 addrspace(1)* undef