xref: /llvm-project/llvm/test/Transforms/LoopDistribute/laa-invalidation.ll (revision 25275bf1961a4529bd49cab1ac9bffa02bdb61e9)
1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2; RUN: opt -passes='loop-load-elim,indvars,loop-distribute' -enable-loop-distribute -S %s | FileCheck %s
3
4define void @test_pr50940(ptr %A, ptr %B) {
5; CHECK-LABEL: @test_pr50940(
6; CHECK-NEXT:  entry:
7; CHECK-NEXT:    br label [[OUTER_HEADER:%.*]]
8; CHECK:       outer.header:
9; CHECK-NEXT:    br i1 false, label [[OUTER_LATCH:%.*]], label [[INNER_PH:%.*]]
10; CHECK:       inner.ph:
11; CHECK-NEXT:    [[UGLYGEP:%.*]] = getelementptr i8, ptr [[A:%.*]], i64 4
12; CHECK-NEXT:    [[GEP_A_3:%.*]] = getelementptr inbounds i16, ptr [[A]], i64 3
13; CHECK-NEXT:    br label [[INNER_LVER_CHECK:%.*]]
14; CHECK:       inner.lver.check:
15; CHECK-NEXT:    [[UGLYGEP1:%.*]] = getelementptr i8, ptr [[A]], i64 8
16; CHECK-NEXT:    [[UGLYGEP2:%.*]] = getelementptr i8, ptr [[B:%.*]], i64 2
17; CHECK-NEXT:    [[BOUND0:%.*]] = icmp ult ptr [[UGLYGEP]], [[UGLYGEP2]]
18; CHECK-NEXT:    [[BOUND1:%.*]] = icmp ult ptr [[B]], [[UGLYGEP1]]
19; CHECK-NEXT:    [[FOUND_CONFLICT:%.*]] = and i1 [[BOUND0]], [[BOUND1]]
20; CHECK-NEXT:    br i1 [[FOUND_CONFLICT]], label [[INNER_PH3_LVER_ORIG:%.*]], label [[INNER_PH3_LDIST1:%.*]]
21; CHECK:       inner.ph3.lver.orig:
22; CHECK-NEXT:    br label [[INNER_LVER_ORIG:%.*]]
23; CHECK:       inner.lver.orig:
24; CHECK-NEXT:    [[IV_LVER_ORIG:%.*]] = phi i16 [ 0, [[INNER_PH3_LVER_ORIG]] ], [ [[IV_NEXT_LVER_ORIG:%.*]], [[INNER_LVER_ORIG]] ]
25; CHECK-NEXT:    [[L_LVER_ORIG:%.*]] = load <2 x i16>, ptr [[UGLYGEP]], align 1
26; CHECK-NEXT:    store i16 0, ptr [[GEP_A_3]], align 1
27; CHECK-NEXT:    store i16 1, ptr [[B]], align 1
28; CHECK-NEXT:    [[IV_NEXT_LVER_ORIG]] = add nuw nsw i16 [[IV_LVER_ORIG]], 1
29; CHECK-NEXT:    [[C_1_LVER_ORIG:%.*]] = icmp ult i16 [[IV_LVER_ORIG]], 38
30; CHECK-NEXT:    br i1 [[C_1_LVER_ORIG]], label [[INNER_LVER_ORIG]], label [[EXIT_LOOPEXIT:%.*]]
31; CHECK:       inner.ph3.ldist1:
32; CHECK-NEXT:    br label [[INNER_LDIST1:%.*]]
33; CHECK:       inner.ldist1:
34; CHECK-NEXT:    [[IV_LDIST1:%.*]] = phi i16 [ 0, [[INNER_PH3_LDIST1]] ], [ [[IV_NEXT_LDIST1:%.*]], [[INNER_LDIST1]] ]
35; CHECK-NEXT:    [[L_LDIST1:%.*]] = load <2 x i16>, ptr [[UGLYGEP]], align 1, !alias.scope !0, !noalias !3
36; CHECK-NEXT:    store i16 0, ptr [[GEP_A_3]], align 1, !alias.scope !0, !noalias !3
37; CHECK-NEXT:    [[IV_NEXT_LDIST1]] = add nuw nsw i16 [[IV_LDIST1]], 1
38; CHECK-NEXT:    [[C_1_LDIST1:%.*]] = icmp ult i16 [[IV_LDIST1]], 38
39; CHECK-NEXT:    br i1 [[C_1_LDIST1]], label [[INNER_LDIST1]], label [[INNER_PH3:%.*]]
40; CHECK:       inner.ph3:
41; CHECK-NEXT:    br label [[INNER:%.*]]
42; CHECK:       inner:
43; CHECK-NEXT:    [[IV:%.*]] = phi i16 [ 0, [[INNER_PH3]] ], [ [[IV_NEXT:%.*]], [[INNER]] ]
44; CHECK-NEXT:    store i16 1, ptr [[B]], align 1, !alias.scope !3
45; CHECK-NEXT:    [[IV_NEXT]] = add nuw nsw i16 [[IV]], 1
46; CHECK-NEXT:    [[C_1:%.*]] = icmp ult i16 [[IV]], 38
47; CHECK-NEXT:    br i1 [[C_1]], label [[INNER]], label [[EXIT_LOOPEXIT4:%.*]]
48; CHECK:       outer.latch:
49; CHECK-NEXT:    br label [[OUTER_HEADER]]
50; CHECK:       exit.loopexit:
51; CHECK-NEXT:    br label [[EXIT:%.*]]
52; CHECK:       exit.loopexit4:
53; CHECK-NEXT:    br label [[EXIT]]
54; CHECK:       exit:
55; CHECK-NEXT:    ret void
56;
57entry:
58  %gep.A.1 = getelementptr inbounds i16, ptr %A, i64 1
59  br label %outer.header
60
61outer.header:
62  %gep.A.2 = getelementptr inbounds i16, ptr %gep.A.1, i64 1
63  br i1 false, label %outer.latch, label %inner.ph
64
65inner.ph:                             ; preds = %for.body5
66  %lcssa.gep = phi ptr [ %gep.A.2, %outer.header ]
67  %gep.A.3 = getelementptr inbounds i16, ptr %A, i64 3
68  br label %inner
69
70inner:
71  %iv = phi i16 [ 0, %inner.ph ], [ %iv.next, %inner ]
72  %l = load <2 x i16>, ptr %lcssa.gep, align 1
73  store i16 0, ptr %gep.A.3, align 1
74  store i16 1, ptr %B, align 1
75  %iv.next = add nuw nsw i16 %iv, 1
76  %c.1 = icmp ult i16 %iv, 38
77  br i1 %c.1, label %inner, label %exit
78
79outer.latch:
80  br label %outer.header
81
82exit:
83  ret void
84}
85