1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2 ; RUN: opt < %s -instcombine -instcombine-infinite-loop-threshold=3 -S | FileCheck %s
4 @var_7 = external global i8, align 1
5 @var_1 = external global i32, align 4
6 @var_0 = external global i16, align 2
7 @var_5 = external global i64, align 8
8 @arr_2 = external global [0 x i32], align 4
9 @arr_4 = external global [0 x i16], align 2
10 @arr_3 = external global [8 x i32], align 16
12 define void @_Z4testv() {
13 ; CHECK-LABEL: @_Z4testv(
15 ; CHECK-NEXT: [[I:%.*]] = load i8, i8* @var_7, align 1
16 ; CHECK-NEXT: [[I1:%.*]] = icmp eq i8 [[I]], -1
17 ; CHECK-NEXT: [[I4:%.*]] = load i16, i16* @var_0, align 2
18 ; CHECK-NEXT: [[I8:%.*]] = sext i16 [[I4]] to i32
19 ; CHECK-NEXT: br i1 [[I1]], label [[BB10:%.*]], label [[BB9:%.*]]
21 ; CHECK-NEXT: br label [[BB12:%.*]]
23 ; CHECK-NEXT: [[I2:%.*]] = load i32, i32* @var_1, align 4
24 ; CHECK-NEXT: [[I3:%.*]] = icmp eq i32 [[I2]], 0
25 ; CHECK-NEXT: [[I6:%.*]] = load i64, i64* @var_5, align 8
26 ; CHECK-NEXT: [[I5:%.*]] = sext i16 [[I4]] to i64
27 ; CHECK-NEXT: [[I7:%.*]] = select i1 [[I3]], i64 [[I6]], i64 [[I5]]
28 ; CHECK-NEXT: [[I11:%.*]] = trunc i64 [[I7]] to i32
29 ; CHECK-NEXT: br label [[BB12]]
31 ; CHECK-NEXT: [[STOREMERGE1:%.*]] = phi i32 [ [[I11]], [[BB10]] ], [ 1, [[BB9]] ]
32 ; CHECK-NEXT: store i32 [[STOREMERGE1]], i32* getelementptr inbounds ([0 x i32], [0 x i32]* @arr_2, i64 0, i64 0), align 4
33 ; CHECK-NEXT: store i16 [[I4]], i16* getelementptr inbounds ([0 x i16], [0 x i16]* @arr_4, i64 0, i64 0), align 2
34 ; CHECK-NEXT: store i32 [[I8]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @arr_3, i64 0, i64 0), align 16
35 ; CHECK-NEXT: store i32 [[STOREMERGE1]], i32* getelementptr inbounds ([0 x i32], [0 x i32]* @arr_2, i64 0, i64 1), align 4
36 ; CHECK-NEXT: store i16 [[I4]], i16* getelementptr inbounds ([0 x i16], [0 x i16]* @arr_4, i64 0, i64 1), align 2
37 ; CHECK-NEXT: store i32 [[I8]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @arr_3, i64 0, i64 1), align 4
38 ; CHECK-NEXT: ret void
41 %i = load i8, i8* @var_7, align 1
42 %i1 = icmp eq i8 %i, -1
43 %i2 = load i32, i32* @var_1, align 4
44 %i3 = icmp eq i32 %i2, 0
45 %i4 = load i16, i16* @var_0, align 2
46 %i5 = sext i16 %i4 to i64
47 %i6 = load i64, i64* @var_5, align 8
48 %i7 = select i1 %i3, i64 %i6, i64 %i5
49 %i8 = sext i16 %i4 to i32
50 br i1 %i1, label %bb10, label %bb9
53 store i32 1, i32* getelementptr inbounds ([0 x i32], [0 x i32]* @arr_2, i64 0, i64 0), align 4
54 store i16 %i4, i16* getelementptr inbounds ([0 x i16], [0 x i16]* @arr_4, i64 0, i64 0), align 2
55 store i32 %i8, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @arr_3, i64 0, i64 0), align 4
56 store i32 1, i32* getelementptr inbounds ([0 x i32], [0 x i32]* @arr_2, i64 0, i64 1), align 4
57 store i16 %i4, i16* getelementptr inbounds ([0 x i16], [0 x i16]* @arr_4, i64 0, i64 1), align 2
58 store i32 %i8, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @arr_3, i64 0, i64 1), align 4
62 %i11 = trunc i64 %i7 to i32
63 store i32 %i11, i32* getelementptr inbounds ([0 x i32], [0 x i32]* @arr_2, i64 0, i64 0), align 4
64 store i16 %i4, i16* getelementptr inbounds ([0 x i16], [0 x i16]* @arr_4, i64 0, i64 0), align 2
65 store i32 %i8, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @arr_3, i64 0, i64 0), align 4
66 store i32 %i11, i32* getelementptr inbounds ([0 x i32], [0 x i32]* @arr_2, i64 0, i64 1), align 4
67 store i16 %i4, i16* getelementptr inbounds ([0 x i16], [0 x i16]* @arr_4, i64 0, i64 1), align 2
68 store i32 %i8, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @arr_3, i64 0, i64 1), align 4
71 bb12: ; preds = %bb10, %bb9