1; RUN: llc < %s | FileCheck %s
2
3; Check no spills to the same stack slot after hoisting.
4; CHECK: mov{{.}} %{{.*}}, [[SPOFFSET1:-?[0-9]*]](%rsp)
5; CHECK: mov{{.}} %{{.*}}, [[SPOFFSET2:-?[0-9]*]](%rsp)
6; CHECK-NOT: mov{{.}} %{{.*}}, [[SPOFFSET1]](%rsp)
7; CHECK-NOT: mov{{.}} %{{.*}}, [[SPOFFSET2]](%rsp)
8
9target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
10target triple = "x86_64-unknown-linux-gnu"
11
12@a = external global i32*, align 8
13@b = external global i32, align 4
14@d = external global i32*, align 8
15
16; Function Attrs: norecurse noreturn nounwind uwtable
17define void @fn1(i32 %p1, i32 %p2, i64 %p3) {
18entry:
19  %tmp = load i32*, i32** @d, align 8
20  %tmp1 = load i32*, i32** @a, align 8
21  %tmp2 = sext i32 %p1 to i64
22  br label %for.cond
23
24for.cond:                                         ; preds = %for.inc14, %entry
25  %indvar = phi i32 [ %indvar.next, %for.inc14 ], [ 0, %entry ]
26  %indvars.iv30.in = phi i32 [ %indvars.iv30, %for.inc14 ], [ %p1, %entry ]
27  %c.0 = phi i32 [ %inc15, %for.inc14 ], [ 1, %entry ]
28  %k.0 = phi i32 [ %k.1.lcssa, %for.inc14 ], [ undef, %entry ]
29  %tmp3 = icmp sgt i32 %p2, 0
30  %smax52 = select i1 %tmp3, i32 %c.0, i32 0
31  %tmp4 = zext i32 %smax52 to i64
32  %tmp5 = icmp sgt i64 %p3, %tmp4
33  %smax53 = select i1 %tmp5, i64 %tmp2, i64 %tmp4
34  %tmp6 = add nsw i64 %smax53, 1
35  %tmp7 = sub nsw i64 %tmp6, %tmp4
36  %tmp8 = add nsw i64 %tmp7, -8
37  %tmp9 = sub i32 undef, %indvar
38  %tmp10 = icmp sgt i64 %tmp2, 0
39  %smax40 = select i1 %tmp10, i64 %tmp2, i64 0
40  %scevgep41 = getelementptr i32, i32* %tmp1, i64 %smax40
41  %indvars.iv30 = add i32 %indvars.iv30.in, -1
42  %tmp11 = icmp sgt i32 %indvars.iv30, 0
43  %smax = select i1 %tmp11, i32 %indvars.iv30, i32 0
44  %tmp12 = zext i32 %smax to i64
45  %sub = sub nsw i32 %p1, %c.0
46  %cmp = icmp sgt i32 %sub, 0
47  %sub. = select i1 %cmp, i32 %sub, i32 0
48  %cmp326 = icmp sgt i32 %k.0, %p1
49  br i1 %cmp326, label %for.cond4.preheader, label %for.body.preheader
50
51for.cond4.preheader:                              ; preds = %for.body, %for.cond
52  %k.1.lcssa = phi i32 [ %k.0, %for.cond ], [ %add, %for.body ]
53  %cmp528 = icmp sgt i32 %sub., %p1
54  br i1 %cmp528, label %for.inc14, label %for.body6.preheader
55
56for.body6.preheader:                              ; preds = %for.cond4.preheader
57  br i1 undef, label %for.body6, label %min.iters.checked
58
59min.iters.checked:                                ; preds = %for.body6.preheader
60  br i1 undef, label %for.body6, label %vector.memcheck
61
62vector.memcheck:                                  ; preds = %min.iters.checked
63  %bound1 = icmp ule i32* undef, %scevgep41
64  %memcheck.conflict = and i1 undef, %bound1
65  br i1 %memcheck.conflict, label %for.body6, label %vector.body.preheader
66
67vector.body.preheader:                            ; preds = %vector.memcheck
68  %lcmp.mod = icmp eq i64 undef, 0
69  br i1 %lcmp.mod, label %vector.body.preheader.split, label %vector.body.prol
70
71vector.body.prol:                                 ; preds = %vector.body.prol, %vector.body.preheader
72  %prol.iter.cmp = icmp eq i64 undef, 0
73  br i1 %prol.iter.cmp, label %vector.body.preheader.split, label %vector.body.prol
74
75vector.body.preheader.split:                      ; preds = %vector.body.prol, %vector.body.preheader
76  %tmp13 = icmp ult i64 %tmp8, 24
77  br i1 %tmp13, label %middle.block, label %vector.body
78
79vector.body:                                      ; preds = %vector.body, %vector.body.preheader.split
80  %index = phi i64 [ %index.next.3, %vector.body ], [ 0, %vector.body.preheader.split ]
81  %index.next = add i64 %index, 8
82  %offset.idx.1 = add i64 %tmp12, %index.next
83  %tmp14 = getelementptr inbounds i32, i32* %tmp, i64 %offset.idx.1
84  %tmp15 = bitcast i32* %tmp14 to <4 x i32>*
85  %wide.load.1 = load <4 x i32>, <4 x i32>* %tmp15, align 4
86  %tmp16 = getelementptr inbounds i32, i32* %tmp1, i64 %offset.idx.1
87  %tmp17 = bitcast i32* %tmp16 to <4 x i32>*
88  store <4 x i32> %wide.load.1, <4 x i32>* %tmp17, align 4
89  %index.next.3 = add i64 %index, 32
90  br i1 undef, label %middle.block, label %vector.body
91
92middle.block:                                     ; preds = %vector.body, %vector.body.preheader.split
93  br i1 undef, label %for.inc14, label %for.body6
94
95for.body.preheader:                               ; preds = %for.cond
96  br label %for.body
97
98for.body:                                         ; preds = %for.body, %for.body.preheader
99  %k.127 = phi i32 [ %k.0, %for.body.preheader ], [ %add, %for.body ]
100  %add = add nsw i32 %k.127, 1
101  %tmp18 = load i32, i32* undef, align 4
102  store i32 %tmp18, i32* @b, align 4
103  br i1 undef, label %for.body, label %for.cond4.preheader
104
105for.body6:                                        ; preds = %for.body6, %middle.block, %vector.memcheck, %min.iters.checked, %for.body6.preheader
106  %indvars.iv32 = phi i64 [ undef, %for.body6 ], [ %tmp12, %vector.memcheck ], [ %tmp12, %min.iters.checked ], [ %tmp12, %for.body6.preheader ], [ undef, %middle.block ]
107  %arrayidx8 = getelementptr inbounds i32, i32* %tmp, i64 %indvars.iv32
108  %tmp19 = load i32, i32* %arrayidx8, align 4
109  %arrayidx10 = getelementptr inbounds i32, i32* %tmp1, i64 %indvars.iv32
110  store i32 %tmp19, i32* %arrayidx10, align 4
111  %cmp5 = icmp slt i64 %indvars.iv32, undef
112  br i1 %cmp5, label %for.body6, label %for.inc14
113
114for.inc14:                                        ; preds = %for.body6, %middle.block, %for.cond4.preheader
115  %inc15 = add nuw nsw i32 %c.0, 1
116  %indvar.next = add i32 %indvar, 1
117  br label %for.cond
118}
119