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--" 5 6 define void @func() { 7 B0: 8 br i1 undef, label %B1, label %B2 9 10 B1: 11 br label %B2 12 13 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 16 17 B20.1: 18 br label %B20.2 19 20 B20.2: 21 %v2 = phi <4 x float> [ zeroinitializer, %B20.1 ], [ %v0, %B2 ] 22 br i1 undef, label %B30.1, label %B30.2 23 24 B30.1: 25 %sub = fsub <4 x float> %v2, undef 26 br label %B30.2 27 28 B30.2: 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 32 ret void 33 } 34
