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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 2
; RUN: opt -S -passes=jump-threading < %s | FileCheck %s
; Make sure we don't crash while trying to calculate the object size of an
; empty phi node.
define void @test(i16 %arg) {
; CHECK-LABEL: define void @test
; CHECK-SAME: (i16 [[ARG:%.*]]) {
; CHECK-NEXT: start:
; CHECK-NEXT: br label [[BB8THREAD_PRE_SPLIT1:%.*]]
; CHECK: bb8thread-pre-split1:
; CHECK-NEXT: [[LOAD_PR_PR:%.*]] = load i16, ptr null, align 2
; CHECK-NEXT: br label [[BB8:%.*]]
; CHECK: bb8:
; CHECK-NEXT: [[LOAD_PR:%.*]] = phi i16 [ [[LOAD_PR_PR]], [[BB8THREAD_PRE_SPLIT1]] ], [ [[LOAD_PR]], [[BB8]] ]
; CHECK-NEXT: [[I:%.*]] = icmp eq i16 [[LOAD_PR]], 0
; CHECK-NEXT: br i1 [[I]], label [[BB10:%.*]], label [[BB8]]
; CHECK: bb10:
; CHECK-NEXT: [[I1:%.*]] = getelementptr { i128, i8 }, ptr null, i64 0, i32 1
; CHECK-NEXT: store i8 0, ptr [[I1]], align 8
; CHECK-NEXT: [[I2:%.*]] = load i128, ptr null, align 8
; CHECK-NEXT: [[I3:%.*]] = icmp eq i128 [[I2]], 0
; CHECK-NEXT: br i1 [[I3]], label [[BB8THREAD_PRE_SPLIT1]], label [[BB8THREAD_PRE_SPLIT1]]
;
start:
br label %bb5
bb20: ; preds = %bb19, %bb17, %bb17, %bb14, %bb13
ret void
bb5: ; preds = %bb16, %bb10, %bb10, %bb8, %start
%_11.0 = phi ptr [ %_11.5, %bb16 ], [ null, %bb10 ], [ null, %bb8 ], [ null, %bb10 ], [ null, %start ]
br label %bb8
bb8: ; preds = %bb15, %bb9, %bb5
%load = load i16, ptr null, align 2
%i = icmp eq i16 %load, 0
br i1 %i, label %bb9, label %bb5
bb9: ; preds = %bb8
switch i16 %load, label %bb8 [
i16 1, label %bb10
i16 0, label %bb13
]
bb10: ; preds = %bb14, %bb13, %bb9
%_2.7 = phi ptr [ %_11.0, %bb14 ], [ %_11.0, %bb13 ], [ null, %bb9 ]
%i1 = getelementptr { i128, i8 }, ptr %_11.0, i64 0, i32 1
store i8 0, ptr %i1, align 8
%i2 = load i128, ptr %_2.7, align 8
%i3 = icmp eq i128 %i2, 0
br i1 %i3, label %bb5, label %bb5
bb13: ; preds = %bb14, %bb9
switch i128 0, label %bb20 [
i128 0, label %bb10
i128 1, label %bb14
]
bb14: ; preds = %bb19, %bb13
switch i16 %arg, label %bb20 [
i16 0, label %bb13
i16 2, label %bb10
i16 1, label %bb15
]
bb15: ; preds = %bb14
switch i16 %arg, label %bb16 [
i16 1, label %bb8
i16 0, label %bb17
]
bb16: ; preds = %bb19, %bb15
%_11.5 = phi ptr [ null, %bb15 ], [ null, %bb19 ]
br label %bb5
bb17: ; preds = %bb19, %bb15
switch i16 %arg, label %bb20 [
i16 0, label %bb20
i16 1, label %bb19
]
bb19: ; preds = %bb17
switch i16 %arg, label %bb16 [
i16 0, label %bb14
i16 1, label %bb20
i16 6570, label %bb17
]
}
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