xref: /llvm-project/llvm/test/Transforms/SLPVectorizer/AMDGPU/phi-result-use-order.ll (revision ea43a30899df5c3c36412392c8f4db79973a1c43) 
1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2; RUN: opt -passes=slp-vectorizer -S -mtriple=amdgcn-amd-amdhsa -mcpu=gfx906 < %s | FileCheck %s
3
4define <4 x half> @phis(i1 %cmp1, <4 x half> %in1, <4 x half> %in2)  {
5; CHECK-LABEL: @phis(
6; CHECK-NEXT:  entry:
7; CHECK-NEXT:    [[TMP0:%.*]] = shufflevector <4 x half> [[IN1:%.*]], <4 x half> poison, <2 x i32> <i32 0, i32 1>
8; CHECK-NEXT:    [[TMP1:%.*]] = shufflevector <4 x half> [[IN1]], <4 x half> poison, <2 x i32> <i32 2, i32 3>
9; CHECK-NEXT:    br i1 [[CMP1:%.*]], label [[BB1:%.*]], label [[BB0:%.*]]
10; CHECK:       bb0:
11; CHECK-NEXT:    [[TMP2:%.*]] = shufflevector <4 x half> [[IN2:%.*]], <4 x half> poison, <2 x i32> <i32 0, i32 1>
12; CHECK-NEXT:    [[TMP3:%.*]] = shufflevector <4 x half> [[IN2]], <4 x half> poison, <2 x i32> <i32 2, i32 3>
13; CHECK-NEXT:    br label [[BB1]]
14; CHECK:       bb1:
15; CHECK-NEXT:    [[TMP4:%.*]] = phi <2 x half> [ [[TMP0]], [[ENTRY:%.*]] ], [ [[TMP2]], [[BB0]] ]
16; CHECK-NEXT:    [[TMP5:%.*]] = phi <2 x half> [ [[TMP1]], [[ENTRY]] ], [ [[TMP3]], [[BB0]] ]
17; CHECK-NEXT:    [[TMP6:%.*]] = shufflevector <2 x half> [[TMP4]], <2 x half> poison, <4 x i32> <i32 0, i32 1, i32 poison, i32 poison>
18; CHECK-NEXT:    [[TMP7:%.*]] = shufflevector <2 x half> [[TMP5]], <2 x half> poison, <4 x i32> <i32 0, i32 1, i32 poison, i32 poison>
19; CHECK-NEXT:    [[TMP8:%.*]] = shufflevector <2 x half> [[TMP4]], <2 x half> [[TMP5]], <4 x i32> <i32 0, i32 1, i32 2, i32 3>
20; CHECK-NEXT:    ret <4 x half> [[TMP8]]
21;
22entry:
23  %a0 = extractelement <4 x half> %in1, i64 0
24  %a1 = extractelement <4 x half> %in1, i64 1
25  %a2 = extractelement <4 x half> %in1, i64 2
26  %a3 = extractelement <4 x half> %in1, i64 3
27  br i1 %cmp1, label %bb1, label %bb0
28
29bb0:
30  %b0 = extractelement <4 x half> %in2, i64 0
31  %b1 = extractelement <4 x half> %in2, i64 1
32  %b2 = extractelement <4 x half> %in2, i64 2
33  %b3 = extractelement <4 x half> %in2, i64 3
34  br label %bb1
35
36bb1:
37  %c0 = phi half [ %a0, %entry ], [ %b0, %bb0 ]
38  %c1 = phi half [ %a1, %entry ], [ %b1, %bb0 ]
39  %c2 = phi half [ %a2, %entry ], [ %b2, %bb0 ]
40  %c3 = phi half [ %a3, %entry ], [ %b3, %bb0 ]
41
42  %o0 = insertelement <4 x half> undef, half %c0, i64 0
43  %o1 = insertelement <4 x half> %o0, half %c1, i64 1
44  %o2 = insertelement <4 x half> %o1, half %c2, i64 2
45  %o3 = insertelement <4 x half> %o2, half %c3, i64 3
46  ret <4 x half> %o3
47}
48
49define <4 x half> @phis_reverse(i1 %cmp1, <4 x half> %in1, <4 x half> %in2)  {
50; CHECK-LABEL: @phis_reverse(
51; CHECK-NEXT:  entry:
52; CHECK-NEXT:    [[TMP0:%.*]] = shufflevector <4 x half> [[IN1:%.*]], <4 x half> poison, <2 x i32> <i32 2, i32 3>
53; CHECK-NEXT:    [[TMP1:%.*]] = shufflevector <4 x half> [[IN1]], <4 x half> poison, <2 x i32> <i32 0, i32 1>
54; CHECK-NEXT:    br i1 [[CMP1:%.*]], label [[BB1:%.*]], label [[BB0:%.*]]
55; CHECK:       bb0:
56; CHECK-NEXT:    [[TMP2:%.*]] = shufflevector <4 x half> [[IN2:%.*]], <4 x half> poison, <2 x i32> <i32 2, i32 3>
57; CHECK-NEXT:    [[TMP3:%.*]] = shufflevector <4 x half> [[IN2]], <4 x half> poison, <2 x i32> <i32 0, i32 1>
58; CHECK-NEXT:    br label [[BB1]]
59; CHECK:       bb1:
60; CHECK-NEXT:    [[TMP4:%.*]] = phi <2 x half> [ [[TMP0]], [[ENTRY:%.*]] ], [ [[TMP2]], [[BB0]] ]
61; CHECK-NEXT:    [[TMP5:%.*]] = phi <2 x half> [ [[TMP1]], [[ENTRY]] ], [ [[TMP3]], [[BB0]] ]
62; CHECK-NEXT:    [[TMP6:%.*]] = shufflevector <2 x half> [[TMP5]], <2 x half> poison, <4 x i32> <i32 0, i32 1, i32 poison, i32 poison>
63; CHECK-NEXT:    [[TMP7:%.*]] = shufflevector <2 x half> [[TMP4]], <2 x half> poison, <4 x i32> <i32 0, i32 1, i32 poison, i32 poison>
64; CHECK-NEXT:    [[TMP8:%.*]] = shufflevector <4 x half> [[TMP6]], <4 x half> [[TMP7]], <4 x i32> <i32 0, i32 1, i32 4, i32 5>
65; CHECK-NEXT:    ret <4 x half> [[TMP8]]
66;
67entry:
68  %a0 = extractelement <4 x half> %in1, i64 0
69  %a1 = extractelement <4 x half> %in1, i64 1
70  %a2 = extractelement <4 x half> %in1, i64 2
71  %a3 = extractelement <4 x half> %in1, i64 3
72  br i1 %cmp1, label %bb1, label %bb0
73
74bb0:
75  %b0 = extractelement <4 x half> %in2, i64 0
76  %b1 = extractelement <4 x half> %in2, i64 1
77  %b2 = extractelement <4 x half> %in2, i64 2
78  %b3 = extractelement <4 x half> %in2, i64 3
79  br label %bb1
80
81bb1:
82  %c3 = phi half [ %a3, %entry ], [ %b3, %bb0 ]
83  %c2 = phi half [ %a2, %entry ], [ %b2, %bb0 ]
84  %c1 = phi half [ %a1, %entry ], [ %b1, %bb0 ]
85  %c0 = phi half [ %a0, %entry ], [ %b0, %bb0 ]
86
87  %o0 = insertelement <4 x half> undef, half %c0, i64 0
88  %o1 = insertelement <4 x half> %o0, half %c1, i64 1
89  %o2 = insertelement <4 x half> %o1, half %c2, i64 2
90  %o3 = insertelement <4 x half> %o2, half %c3, i64 3
91  ret <4 x half> %o3
92}
93