1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 2 2; RUN: opt -S -passes=jump-threading < %s | FileCheck %s 3 4; Make sure we don't crash while trying to calculate the object size of an 5; empty phi node. 6 7define void @test(i16 %arg) { 8; CHECK-LABEL: define void @test 9; CHECK-SAME: (i16 [[ARG:%.*]]) { 10; CHECK-NEXT: start: 11; CHECK-NEXT: br label [[BB8THREAD_PRE_SPLIT1:%.*]] 12; CHECK: bb8thread-pre-split1: 13; CHECK-NEXT: [[LOAD_PR_PR:%.*]] = load i16, ptr null, align 2 14; CHECK-NEXT: br label [[BB8:%.*]] 15; CHECK: bb8: 16; CHECK-NEXT: [[LOAD_PR:%.*]] = phi i16 [ [[LOAD_PR_PR]], [[BB8THREAD_PRE_SPLIT1]] ], [ [[LOAD_PR]], [[BB8]] ] 17; CHECK-NEXT: [[I:%.*]] = icmp eq i16 [[LOAD_PR]], 0 18; CHECK-NEXT: br i1 [[I]], label [[BB10:%.*]], label [[BB8]] 19; CHECK: bb10: 20; CHECK-NEXT: [[I1:%.*]] = getelementptr { i128, i8 }, ptr null, i64 0, i32 1 21; CHECK-NEXT: store i8 0, ptr [[I1]], align 8 22; CHECK-NEXT: [[I2:%.*]] = load i128, ptr null, align 8 23; CHECK-NEXT: [[I3:%.*]] = icmp eq i128 [[I2]], 0 24; CHECK-NEXT: br i1 [[I3]], label [[BB8THREAD_PRE_SPLIT1]], label [[BB8THREAD_PRE_SPLIT1]] 25; 26start: 27 br label %bb5 28 29bb20: ; preds = %bb19, %bb17, %bb17, %bb14, %bb13 30 ret void 31 32bb5: ; preds = %bb16, %bb10, %bb10, %bb8, %start 33 %_11.0 = phi ptr [ %_11.5, %bb16 ], [ null, %bb10 ], [ null, %bb8 ], [ null, %bb10 ], [ null, %start ] 34 br label %bb8 35 36bb8: ; preds = %bb15, %bb9, %bb5 37 %load = load i16, ptr null, align 2 38 %i = icmp eq i16 %load, 0 39 br i1 %i, label %bb9, label %bb5 40 41bb9: ; preds = %bb8 42 switch i16 %load, label %bb8 [ 43 i16 1, label %bb10 44 i16 0, label %bb13 45 ] 46 47bb10: ; preds = %bb14, %bb13, %bb9 48 %_2.7 = phi ptr [ %_11.0, %bb14 ], [ %_11.0, %bb13 ], [ null, %bb9 ] 49 %i1 = getelementptr { i128, i8 }, ptr %_11.0, i64 0, i32 1 50 store i8 0, ptr %i1, align 8 51 %i2 = load i128, ptr %_2.7, align 8 52 %i3 = icmp eq i128 %i2, 0 53 br i1 %i3, label %bb5, label %bb5 54 55bb13: ; preds = %bb14, %bb9 56 switch i128 0, label %bb20 [ 57 i128 0, label %bb10 58 i128 1, label %bb14 59 ] 60 61bb14: ; preds = %bb19, %bb13 62 switch i16 %arg, label %bb20 [ 63 i16 0, label %bb13 64 i16 2, label %bb10 65 i16 1, label %bb15 66 ] 67 68bb15: ; preds = %bb14 69 switch i16 %arg, label %bb16 [ 70 i16 1, label %bb8 71 i16 0, label %bb17 72 ] 73 74bb16: ; preds = %bb19, %bb15 75 %_11.5 = phi ptr [ null, %bb15 ], [ null, %bb19 ] 76 br label %bb5 77 78bb17: ; preds = %bb19, %bb15 79 switch i16 %arg, label %bb20 [ 80 i16 0, label %bb20 81 i16 1, label %bb19 82 ] 83 84bb19: ; preds = %bb17 85 switch i16 %arg, label %bb16 [ 86 i16 0, label %bb14 87 i16 1, label %bb20 88 i16 6570, label %bb17 89 ] 90} 91