1 ; RUN: llc -verify-machineinstrs -o /dev/null %s
2 ; Check that renameDisconnectedComponents() does not create vregs without a
3 ; definition on every path (there should at least be IMPLICIT_DEF instructions).
4 target triple = "amdgcn--"
6 define amdgpu_kernel void @func() {
8 br i1 undef, label %B1, label %B2
14 %v0 = phi <4 x float> [ zeroinitializer, %B1 ], [ <float 0.0, float 0.0, float 0.0, float undef>, %B0 ]
15 br i1 undef, label %B20.1, label %B20.2
21 %v2 = phi <4 x float> [ zeroinitializer, %B20.1 ], [ %v0, %B2 ]
22 br i1 undef, label %B30.1, label %B30.2
25 %sub = fsub <4 x float> %v2, undef
29 %v3 = phi <4 x float> [ %sub, %B30.1 ], [ %v2, %B20.2 ]
30 %ve0 = extractelement <4 x float> %v3, i32 0
31 store float %ve0, float addrspace(3)* undef, align 4