1 ; RUN: llc < %s | FileCheck %s
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)
9 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
10 target triple = "x86_64-unknown-linux-gnu"
12 @a = external global i32*, align 8
13 @b = external global i32, align 4
14 @d = external global i32*, align 8
16 ; Function Attrs: norecurse noreturn nounwind uwtable
17 define void @fn1(i32 %p1, i32 %p2, i64 %p3) {
19 %tmp = load i32*, i32** @d, align 8
20 %tmp1 = load i32*, i32** @a, align 8
21 %tmp2 = sext i32 %p1 to i64
24 for.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
51 for.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
56 for.body6.preheader: ; preds = %for.cond4.preheader
57 br i1 undef, label %for.body6, label %min.iters.checked
59 min.iters.checked: ; preds = %for.body6.preheader
60 br i1 undef, label %for.body6, label %vector.memcheck
62 vector.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
67 vector.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
71 vector.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
75 vector.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
79 vector.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
92 middle.block: ; preds = %vector.body, %vector.body.preheader.split
93 br i1 undef, label %for.inc14, label %for.body6
95 for.body.preheader: ; preds = %for.cond
98 for.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
105 for.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
114 for.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