xref: /llvm-project/llvm/test/Transforms/IRCE/pr48051.ll (revision 0ec421d024fe47fb43afdaa625309b0f799e9a59)
1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2; RUN: opt < %s -passes=irce -S | FileCheck %s
3
4; Reduced from https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=26832
5
6define void @scalar_after_vectorization_0() {
7; CHECK-LABEL: @scalar_after_vectorization_0(
8; CHECK-NEXT:  outer.ph:
9; CHECK-NEXT:    [[B4:%.*]] = sub i64 9223372036854775807, -9223372036854775808
10; CHECK-NEXT:    [[B21:%.*]] = and i64 [[B4]], [[B4]]
11; CHECK-NEXT:    [[B9:%.*]] = lshr i64 9223372036854775807, -1
12; CHECK-NEXT:    br label [[OUTER_BODY:%.*]]
13; CHECK:       outer.body:
14; CHECK-NEXT:    [[I:%.*]] = phi i64 [ 1, [[OUTER_PH:%.*]] ], [ [[I_NEXT:%.*]], [[INNER_END:%.*]] ]
15; CHECK-NEXT:    [[T0:%.*]] = mul nuw nsw i64 [[I]], undef
16; CHECK-NEXT:    br label [[INNER_BODY:%.*]]
17; CHECK:       inner.body:
18; CHECK-NEXT:    [[J:%.*]] = phi i64 [ 1, [[OUTER_BODY]] ], [ [[T1:%.*]], [[INNER_BODY]] ]
19; CHECK-NEXT:    [[T1]] = add nuw nsw i64 [[J]], [[T0]]
20; CHECK-NEXT:    [[B3:%.*]] = mul i64 [[T1]], undef
21; CHECK-NEXT:    [[B13:%.*]] = mul i64 [[B3]], 4294967296
22; CHECK-NEXT:    [[C2:%.*]] = icmp slt i64 undef, [[B13]]
23; CHECK-NEXT:    br i1 [[C2]], label [[INNER_BODY]], label [[INNER_END]]
24; CHECK:       inner.end:
25; CHECK-NEXT:    [[B16:%.*]] = urem i64 [[B4]], [[B9]]
26; CHECK-NEXT:    [[I_NEXT]] = add i64 [[I]], [[B16]]
27; CHECK-NEXT:    [[C:%.*]] = icmp ult i64 [[B21]], [[I_NEXT]]
28; CHECK-NEXT:    br i1 [[C]], label [[OUTER_BODY]], label [[OUTER_END:%.*]]
29; CHECK:       outer.end:
30; CHECK-NEXT:    ret void
31;
32outer.ph:
33  br label %outer.body
34
35outer.body:                                       ; preds = %inner.end, %outer.ph
36  %i = phi i64 [ 1, %outer.ph ], [ %i.next, %inner.end ]
37  %t0 = mul nuw nsw i64 %i, undef
38  br label %inner.body
39
40inner.body:                                       ; preds = %inner.body, %outer.body
41  %j = phi i64 [ 1, %outer.body ], [ %t1, %inner.body ]
42  %t1 = add nuw nsw i64 %j, %t0
43  %B3 = mul i64 %t1, undef
44  %B13 = mul i64 %B3, 4294967296
45  %C2 = icmp slt i64 undef, %B13
46  br i1 %C2, label %inner.body, label %inner.end
47
48inner.end:                                        ; preds = %inner.body
49  %B4 = sub i64 9223372036854775807, -9223372036854775808
50  %B21 = and i64 %B4, %B4
51  %B9 = lshr i64 9223372036854775807, -1
52  %B16 = urem i64 %B4, %B9
53  %i.next = add i64 %i, %B16
54  %C = icmp ult i64 %B21, %i.next
55  br i1 %C, label %outer.body, label %outer.end
56
57outer.end:                                        ; preds = %inner.end
58  ret void
59}
60