1 ; RUN: llc -march=amdgcn -mcpu=gfx600 -verify-machineinstrs < %s | FileCheck %s
2 ; RUN: llc -march=amdgcn -mcpu=gfx700 -verify-machineinstrs < %s | FileCheck %s
4 ; On gfx6 and gfx7, this test shows a bug in SelectionDAG where scalarizing the
5 ; extension of a vector of f16 generates an illegal node that errors later.
7 ; CHECK-LABEL: {{^}}main:
10 define amdgpu_gs void @main(i32 inreg %arg) local_unnamed_addr #0 {
12 %tmp = load volatile float, float addrspace(1)* undef
13 %tmp1 = bitcast float %tmp to i32
14 %im0.i = lshr i32 %tmp1, 16
15 %tmp2 = insertelement <2 x i32> undef, i32 %im0.i, i32 1
16 %tmp3 = trunc <2 x i32> %tmp2 to <2 x i16>
17 %tmp4 = bitcast <2 x i16> %tmp3 to <2 x half>
18 %tmp5 = fpext <2 x half> %tmp4 to <2 x float>
19 %bc = bitcast <2 x float> %tmp5 to <2 x i32>
20 %tmp6 = extractelement <2 x i32> %bc, i32 1
21 store volatile i32 %tmp6, i32 addrspace(1)* undef
25 attributes #0 = { nounwind }