1; RUN: opt %loadPolly -S -polly-codegen < %s | FileCheck %s
2;
3;    int jd(int *restrict A, int x, int N) {
4;      for (int i = 1; i < N; i++)
5;        for (int j = 3; j < N; j++)
6;          x += A[i];
7;      return x;
8;    }
9;
10target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
11
12define i32 @jd(i32* noalias %A, i32 %x, i32 %N) {
13entry:
14; CHECK-LABEL: entry:
15; CHECK-DAG:     %x.addr.1.lcssa.s2a = alloca i32
16; CHECK-DAG:     %x.addr.1.lcssa.phiops = alloca i32
17; CHECK-DAG:     %x.addr.1.s2a = alloca i32
18; CHECK-DAG:     %x.addr.1.phiops = alloca i32
19; CHECK-DAG:     %x.addr.0.s2a = alloca i32
20; CHECK-DAG:     %x.addr.0.phiops = alloca i32
21  %tmp = sext i32 %N to i64
22  br label %for.cond
23
24; CHECK-LABEL: polly.merge_new_and_old:
25; CHECK:         %x.addr.0.merge = phi i32 [ %x.addr.0.final_reload, %polly.exiting ], [ %x.addr.0, %for.cond ]
26; CHECK:         ret i32 %x.addr.0.merge
27
28; CHECK-LABEL: polly.start:
29; CHECK:         store i32 %x, i32* %x.addr.0.phiops
30
31; CHECK-LABEL: polly.exiting:
32; CHECK:         %x.addr.0.final_reload = load i32, i32* %x.addr.0.s2a
33
34for.cond:                                         ; preds = %for.inc4, %entry
35; CHECK-LABEL: polly.stmt.for.cond{{[0-9]*}}:
36; CHECK:         %x.addr.0.phiops.reload[[R1:[0-9]*]] = load i32, i32* %x.addr.0.phiops
37; CHECK:         store i32 %x.addr.0.phiops.reload[[R1]], i32* %x.addr.0.s2a
38  %indvars.iv = phi i64 [ %indvars.iv.next, %for.inc4 ], [ 1, %entry ]
39  %x.addr.0 = phi i32 [ %x, %entry ], [ %x.addr.1.lcssa, %for.inc4 ]
40  %cmp = icmp slt i64 %indvars.iv, %tmp
41  br i1 %cmp, label %for.body, label %for.end6
42
43for.body:                                         ; preds = %for.cond
44; CHECK-LABEL: polly.stmt.for.body:
45; CHECK:         %x.addr.0.s2a.reload[[R2:[0-9]*]] = load i32, i32* %x.addr.0.s2a
46; CHECK:         store i32 %x.addr.0.s2a.reload[[R2]], i32* %x.addr.1.phiops
47  br label %for.cond1
48
49for.cond1:                                        ; preds = %for.inc, %for.body
50; CHECK-LABEL: polly.stmt.for.cond1:
51; CHECK:         %x.addr.1.phiops.reload = load i32, i32* %x.addr.1.phiops
52; CHECK:         store i32 %x.addr.1.phiops.reload, i32* %x.addr.1.s2a[[R6:[0-9]*]]
53; CHECK:         store i32 %x.addr.1.phiops.reload, i32* %x.addr.1.lcssa.phiops
54  %x.addr.1 = phi i32 [ %x.addr.0, %for.body ], [ %add, %for.inc ]
55  %j.0 = phi i32 [ 3, %for.body ], [ %inc, %for.inc ]
56  %exitcond = icmp ne i32 %j.0, %N
57  br i1 %exitcond, label %for.body3, label %for.end
58
59for.inc:                                          ; preds = %for.body3
60; CHECK-LABEL: polly.stmt.for.inc:
61; CHECK:         %x.addr.1.s2a.reload[[R3:[0-9]*]] = load i32, i32* %x.addr.1.s2a
62; CHECK:         %p_add = add nsw i32 %x.addr.1.s2a.reload[[R3]], %tmp1_p_scalar_
63; CHECK:         store i32 %p_add, i32* %x.addr.1.phiops
64  %arrayidx = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
65  %tmp1 = load i32, i32* %arrayidx, align 4
66  %add = add nsw i32 %x.addr.1, %tmp1
67  %inc = add nsw i32 %j.0, 1
68  br label %for.cond1
69
70for.end:                                          ; preds = %for.cond1
71; CHECK-LABEL: polly.stmt.for.end:
72; CHECK-NEXT:    %x.addr.1.lcssa.phiops.reload = load i32, i32* %x.addr.1.lcssa.phiops
73; CHECK-NEXT:    store i32 %x.addr.1.lcssa.phiops.reload, i32* %x.addr.1.lcssa.s2a[[R4:[0-9]*]]
74  %x.addr.1.lcssa = phi i32 [ %x.addr.1, %for.cond1 ]
75  br label %for.inc4
76
77for.inc4:                                         ; preds = %for.end
78; CHECK-LABEL: polly.stmt.for.inc4:
79; CHECK:         %x.addr.1.lcssa.s2a.reload[[R5:[0-9]*]] = load i32, i32* %x.addr.1.lcssa.s2a[[R4]]
80; CHECK:         store i32 %x.addr.1.lcssa.s2a.reload[[R5]], i32* %x.addr.0.phiops
81  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
82  br label %for.cond
83
84for.body3:                                        ; preds = %for.cond1
85  br label %for.inc
86
87for.end6:                                         ; preds = %for.cond
88  ret i32 %x.addr.0
89}
90