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; RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx900 -verify-machineinstrs < %s | FileCheck -check-prefix=GCN %s
; There was an infinite loop in DAGCombiner from a target build_vector
; combine and a generic insert_vector_elt combine.
; GCN-LABEL: {{^}}combine_loop:
; GCN: flat_load_ushort
; GCN: flat_store_short
; GCN: v_lshlrev_b32_e32 v{{[0-9]+}}, 16,
define amdgpu_kernel void @combine_loop(i16* %arg) #0 {
bb:
br label %bb1
bb1:
%tmp = phi <2 x i16> [ <i16 15360, i16 15360>, %bb ], [ %tmp5, %bb1 ]
%tmp2 = phi half [ 0xH0000, %bb ], [ %tmp8, %bb1 ]
%tmp3 = load volatile half, half* null, align 536870912
%tmp4 = bitcast half %tmp3 to i16
%tmp5 = insertelement <2 x i16> <i16 0, i16 undef>, i16 %tmp4, i32 1
%tmp6 = bitcast i16* %arg to half*
store volatile half %tmp2, half* %tmp6, align 2
%tmp7 = bitcast <2 x i16> %tmp to <2 x half>
%tmp8 = extractelement <2 x half> %tmp7, i32 0
br label %bb1
}
attributes #0 = { nounwind }
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