1 ; RUN: llc -o /dev/null %s 2 ; This testcase produces a situation with unused value numbers in subregister 3 ; liveranges that get distributed by ConnectedVNInfoEqClasses. 4 target triple = "amdgcn--" 5 6 define spir_kernel void @hoge() { 7 bb: 8 %tmp = tail call i32 @llvm.r600.read.tidig.x() 9 br i1 undef, label %bb2, label %bb23 10 11 bb2: 12 br i1 undef, label %bb6, label %bb8 13 14 bb6: 15 %tmp7 = or i64 undef, undef 16 br label %bb8 17 18 bb8: 19 %tmp9 = phi i64 [ %tmp7, %bb6 ], [ undef, %bb2 ] 20 %tmp10 = icmp eq i32 %tmp, 0 21 br i1 %tmp10, label %bb11, label %bb23 22 23 bb11: 24 br i1 undef, label %bb20, label %bb17 25 26 bb17: 27 br label %bb20 28 29 bb20: 30 %tmp21 = phi i64 [ undef, %bb17 ], [ %tmp9, %bb11 ] 31 %tmp22 = trunc i64 %tmp21 to i32 32 br label %bb23 33 34 bb23: 35 %tmp24 = phi i32 [ %tmp22, %bb20 ], [ undef, %bb8 ], [ undef, %bb ] 36 br label %bb25 37 38 bb25: 39 %tmp26 = phi i32 [ %tmp24, %bb23 ], [ undef, %bb25 ] 40 br i1 undef, label %bb25, label %bb30 41 42 bb30: 43 br i1 undef, label %bb32, label %bb34 44 45 bb32: 46 %tmp33 = zext i32 %tmp26 to i64 47 br label %bb34 48 49 bb34: 50 ret void 51 } 52 53 declare i32 @llvm.r600.read.tidig.x() 54
