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gerrit-public.fairphone.software / toolchain / llvm-project / cee313d288a4faf0355d76fb6e0e927e211d08a5 / . / llvm / test / Transforms / LoopVectorize / loop-scalars.ll
blob: 4dcd5993c128b9ccdd1c2d505dc81699ada8d9ff [file] [log] [blame]
Eric Christophercee313d2019-04-17 04:52:47 +0000[diff] [blame^]1; REQUIRES: asserts
2; RUN: opt < %s -loop-vectorize -force-vector-width=2 -force-vector-interleave=1 -instcombine -debug-only=loop-vectorize -disable-output -print-after=instcombine 2>&1 | FileCheck %s
3
4target datalayout = "e-m:e-i64:64-i128:128-n32:64-S128"
5
6; CHECK-LABEL: vector_gep
7; CHECK-NOT: LV: Found scalar instruction: %tmp0 = getelementptr inbounds i32, i32* %b, i64 %i
8; CHECK: vector.body:
9; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, %vector.ph ], [ [[INDEX_NEXT:%.*]], %vector.body ]
10; CHECK-NEXT: [[VEC_IND:%.*]] = phi <2 x i64> [ <i64 0, i64 1>, %vector.ph ], [ [[VEC_IND_NEXT:%.*]], %vector.body ]
11; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds i32, i32* %b, <2 x i64> [[VEC_IND]]
12; CHECK-NEXT: [[TMP2:%.*]] = getelementptr inbounds i32*, i32** %a, i64 [[INDEX]]
13; CHECK-NEXT: [[TMP3:%.*]] = bitcast i32** [[TMP2]] to <2 x i32*>*
14; CHECK-NEXT: store <2 x i32*> [[TMP1]], <2 x i32*>* [[TMP3]], align 8
15; CHECK-NEXT: [[INDEX_NEXT]] = add i64 [[INDEX]], 2
16; CHECK-NEXT: [[VEC_IND_NEXT]] = add <2 x i64> [[VEC_IND]], <i64 2, i64 2>
17; CHECK: br i1 {{.*}}, label %middle.block, label %vector.body
18;
19define void @vector_gep(i32** %a, i32 *%b, i64 %n) {
20entry:
21 br label %for.body
22
23for.body:
24 %i = phi i64 [ %i.next, %for.body ], [ 0, %entry ]
25 %tmp0 = getelementptr inbounds i32, i32* %b, i64 %i
26 %tmp1 = getelementptr inbounds i32*, i32** %a, i64 %i
27 store i32* %tmp0, i32** %tmp1, align 8
28 %i.next = add nuw nsw i64 %i, 1
29 %cond = icmp slt i64 %i.next, %n
30 br i1 %cond, label %for.body, label %for.end
31
32for.end:
33 ret void
34}
35
36; CHECK-LABEL: scalar_store
37; CHECK: LV: Found scalar instruction: %tmp1 = getelementptr inbounds i32*, i32** %a, i64 %i
38; CHECK-NEXT: LV: Found scalar instruction: %tmp0 = getelementptr inbounds i32, i32* %b, i64 %i
39; CHECK-NEXT: LV: Found scalar instruction: %i = phi i64 [ %i.next, %for.body ], [ 0, %entry ]
40; CHECK-NEXT: LV: Found scalar instruction: %i.next = add nuw nsw i64 %i, 2
41; CHECK: vector.body:
42; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, %vector.ph ], [ [[INDEX_NEXT:%.*]], %vector.body ]
43; CHECK-NEXT: [[OFFSET_IDX:%.*]] = shl i64 [[INDEX]], 1
44; CHECK-NEXT: [[TMP4:%.*]] = or i64 [[OFFSET_IDX]], 2
45; CHECK-NEXT: [[TMP5:%.*]] = getelementptr inbounds i32, i32* %b, i64 [[OFFSET_IDX]]
46; CHECK-NEXT: [[TMP6:%.*]] = getelementptr inbounds i32, i32* %b, i64 [[TMP4]]
47; CHECK-NEXT: [[TMP7:%.*]] = getelementptr inbounds i32*, i32** %a, i64 [[OFFSET_IDX]]
48; CHECK-NEXT: [[TMP8:%.*]] = getelementptr inbounds i32*, i32** %a, i64 [[TMP4]]
49; CHECK-NEXT: store i32* [[TMP5]], i32** [[TMP7]], align 8
50; CHECK-NEXT: store i32* [[TMP6]], i32** [[TMP8]], align 8
51; CHECK-NEXT: [[INDEX_NEXT]] = add i64 [[INDEX]], 2
52; CHECK: br i1 {{.*}}, label %middle.block, label %vector.body
53;
54define void @scalar_store(i32** %a, i32 *%b, i64 %n) {
55entry:
56 br label %for.body
57
58for.body:
59 %i = phi i64 [ %i.next, %for.body ], [ 0, %entry ]
60 %tmp0 = getelementptr inbounds i32, i32* %b, i64 %i
61 %tmp1 = getelementptr inbounds i32*, i32** %a, i64 %i
62 store i32* %tmp0, i32** %tmp1, align 8
63 %i.next = add nuw nsw i64 %i, 2
64 %cond = icmp slt i64 %i.next, %n
65 br i1 %cond, label %for.body, label %for.end
66
67for.end:
68 ret void
69}
70
71; CHECK-LABEL: expansion
72; CHECK: LV: Found scalar instruction: %tmp3 = getelementptr inbounds i32*, i32** %tmp2, i64 %i
73; CHECK-NEXT: LV: Found scalar instruction: %tmp1 = bitcast i64* %tmp0 to i32*
74; CHECK-NEXT: LV: Found scalar instruction: %tmp2 = getelementptr inbounds i32*, i32** %a, i64 0
75; CHECK-NEXT: LV: Found scalar instruction: %tmp0 = getelementptr inbounds i64, i64* %b, i64 %i
76; CHECK-NEXT: LV: Found scalar instruction: %i = phi i64 [ %i.next, %for.body ], [ 0, %entry ]
77; CHECK-NEXT: LV: Found scalar instruction: %i.next = add nuw nsw i64 %i, 2
78; CHECK: vector.body:
79; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, %vector.ph ], [ [[INDEX_NEXT:%.*]], %vector.body ]
80; CHECK-NEXT: [[OFFSET_IDX:%.*]] = shl i64 [[INDEX]], 1
81; CHECK-NEXT: [[TMP4:%.*]] = or i64 [[OFFSET_IDX]], 2
82; CHECK-NEXT: [[TMP5:%.*]] = getelementptr inbounds i64, i64* %b, i64 [[OFFSET_IDX]]
83; CHECK-NEXT: [[TMP6:%.*]] = getelementptr inbounds i64, i64* %b, i64 [[TMP4]]
84; CHECK-NEXT: [[TMP7:%.*]] = getelementptr inbounds i32*, i32** %a, i64 [[OFFSET_IDX]]
85; CHECK-NEXT: [[TMP8:%.*]] = getelementptr inbounds i32*, i32** %a, i64 [[TMP4]]
86; CHECK-NEXT: [[TMP9:%.*]] = bitcast i32** [[TMP7]] to i64**
87; CHECK-NEXT: store i64* [[TMP5]], i64** [[TMP9]], align 8
88; CHECK-NEXT: [[TMP10:%.*]] = bitcast i32** [[TMP8]] to i64**
89; CHECK-NEXT: store i64* [[TMP6]], i64** [[TMP10]], align 8
90; CHECK-NEXT: [[INDEX_NEXT]] = add i64 [[INDEX]], 2
91; CHECK: br i1 {{.*}}, label %middle.block, label %vector.body
92;
93define void @expansion(i32** %a, i64 *%b, i64 %n) {
94entry:
95 br label %for.body
96
97for.body:
98 %i = phi i64 [ %i.next, %for.body ], [ 0, %entry ]
99 %tmp0 = getelementptr inbounds i64, i64* %b, i64 %i
100 %tmp1 = bitcast i64* %tmp0 to i32*
101 %tmp2 = getelementptr inbounds i32*, i32** %a, i64 0
102 %tmp3 = getelementptr inbounds i32*, i32** %tmp2, i64 %i
103 store i32* %tmp1, i32** %tmp3, align 8
104 %i.next = add nuw nsw i64 %i, 2
105 %cond = icmp slt i64 %i.next, %n
106 br i1 %cond, label %for.body, label %for.end
107
108for.end:
109 ret void
110}
111
112; CHECK-LABEL: no_gep_or_bitcast
113; CHECK-NOT: LV: Found scalar instruction: %tmp1 = load i32*, i32** %tmp0, align 8
114; CHECK: LV: Found scalar instruction: %i = phi i64 [ %i.next, %for.body ], [ 0, %entry ]
115; CHECK-NEXT: LV: Found scalar instruction: %i.next = add nuw nsw i64 %i, 1
116; CHECK: vector.body:
117; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, %vector.ph ], [ [[INDEX_NEXT:%.*]], %vector.body ]
118; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds i32*, i32** %a, i64 [[INDEX]]
119; CHECK-NEXT: [[TMP2:%.*]] = bitcast i32** [[TMP1]] to <2 x i32*>*
120; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <2 x i32*>, <2 x i32*>* [[TMP2]], align 8
121; CHECK-NEXT: [[TMP3:%.*]] = extractelement <2 x i32*> [[WIDE_LOAD]], i32 0
122; CHECK-NEXT: store i32 0, i32* [[TMP3]], align 8
123; CHECK-NEXT: [[TMP4:%.*]] = extractelement <2 x i32*> [[WIDE_LOAD]], i32 1
124; CHECK-NEXT: store i32 0, i32* [[TMP4]], align 8
125; CHECK-NEXT: [[INDEX_NEXT]] = add i64 [[INDEX]], 2
126; CHECK: br i1 {{.*}}, label %middle.block, label %vector.body
127;
128define void @no_gep_or_bitcast(i32** noalias %a, i64 %n) {
129entry:
130 br label %for.body
131
132for.body:
133 %i = phi i64 [ %i.next, %for.body ], [ 0, %entry ]
134 %tmp0 = getelementptr inbounds i32*, i32** %a, i64 %i
135 %tmp1 = load i32*, i32** %tmp0, align 8
136 store i32 0, i32* %tmp1, align 8
137 %i.next = add nuw nsw i64 %i, 1
138 %cond = icmp slt i64 %i.next, %n
139 br i1 %cond, label %for.body, label %for.end
140
141for.end:
142 ret void
143}