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