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; RUN: llc -mtriple=amdgcn-- -verify-machineinstrs -o /dev/null %s
; This testcase produces a situation with unused value numbers in subregister
; liveranges that get distributed by ConnectedVNInfoEqClasses.
define amdgpu_kernel void @hoge(i1 %c0, i1 %c1, i1 %c2, i1 %c3, i1 %c4) {
bb:
%tmp = tail call i32 @llvm.amdgcn.workitem.id.x()
br i1 %c0, label %bb2, label %bb23
bb2:
br i1 %c1, label %bb6, label %bb8
bb6:
%tmp7 = or i64 undef, undef
br label %bb8
bb8:
%tmp9 = phi i64 [ %tmp7, %bb6 ], [ undef, %bb2 ]
%tmp10 = icmp eq i32 %tmp, 0
br i1 %tmp10, label %bb11, label %bb23
bb11:
br i1 %c2, label %bb20, label %bb17
bb17:
br label %bb20
bb20:
%tmp21 = phi i64 [ undef, %bb17 ], [ %tmp9, %bb11 ]
%tmp22 = trunc i64 %tmp21 to i32
br label %bb23
bb23:
%tmp24 = phi i32 [ %tmp22, %bb20 ], [ undef, %bb8 ], [ undef, %bb ]
br label %bb25
bb25:
%tmp26 = phi i32 [ %tmp24, %bb23 ], [ undef, %bb25 ]
br i1 %c3, label %bb25, label %bb30
bb30:
br i1 %c4, label %bb32, label %bb34
bb32:
%tmp33 = zext i32 %tmp26 to i64
br label %bb34
bb34:
ret void
}
declare i32 @llvm.amdgcn.workitem.id.x()
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