llvm-project
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1; RUN: opt %loadNPMPolly -polly-stmt-granularity=bb '-passes=print<polly-dependences>' -polly-dependences-analysis-type=value-based -polly-dependences-analysis-level=reference-wise -disable-output < %s | FileCheck %s --check-prefix=REF
2; RUN: opt %loadNPMPolly -polly-stmt-granularity=bb '-passes=print<polly-dependences>' -polly-dependences-analysis-type=value-based -polly-dependences-analysis-level=access-wise -disable-output < %s | FileCheck %s --check-prefix=ACC
3
4; REF: RAW dependences:
5; REF-NEXT: [N] -> { [Stmt_for_body[i0] -> MemRef_b[]] -> [Stmt_for_body[6 + i0] -> MemRef_b[]] : 0 <= i0 <= -13 + N; Stmt_for_body[i0] -> Stmt_for_body[6 + i0] : 0 <= i0 <= -13 + N; Stmt_for_body[i0] -> Stmt_for_body[4 + i0] : 0 <= i0 <= -11 + N; [Stmt_for_body[i0] -> MemRef_a[]] -> [Stmt_for_body[4 + i0] -> MemRef_a[]] : 0 <= i0 <= -11 + N }
6; REF-NEXT: WAR dependences:
7; REF-NEXT: { }
8; REF-NEXT: WAW dependences:
9; REF-NEXT: { }
10; REF-NEXT: Reduction dependences:
11; REF-NEXT: { }
12
13; ACC: RAW dependences:
14; ACC-NEXT: [N] -> { [Stmt_for_body[i0] -> Stmt_for_body_Write1[]] -> [Stmt_for_body[4 + i0] -> Stmt_for_body_Read0[]] : 0 <= i0 <= -11 + N; Stmt_for_body[i0] -> Stmt_for_body[6 + i0] : 0 <= i0 <= -13 + N; Stmt_for_body[i0] -> Stmt_for_body[4 + i0] : 0 <= i0 <= -11 + N; [Stmt_for_body[i0] -> Stmt_for_body_Write3[]] -> [Stmt_for_body[6 + i0] -> Stmt_for_body_Read2[]] : 0 <= i0 <= -13 + N }
15
16; ACC-NEXT: WAR dependences:
17; ACC-NEXT: [N] -> { }
18; ACC-NEXT: WAW dependences:
19; ACC-NEXT: [N] -> { }
20; ACC-NEXT: Reduction dependences:
21; ACC-NEXT: [N] -> { }
22
23; void test(char a[], char b[], long N) {
24; for (long i = 6; i < N; ++i) {
25; a[i] = a[i - 4] + i;
26; b[i] = b[i - 6] + i;
27; }
28; }
29
30target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
31target triple = "x86_64-unknown-linux-gnu"
32
33; Function Attrs: nounwind uwtable
34define void @test(ptr %a, ptr %b, i64 %N) #0 {
35entry:
36br label %for.cond
37
38for.cond: ; preds = %for.inc, %entry
39%i.0 = phi i64 [ 6, %entry ], [ %inc, %for.inc ]
40%cmp = icmp slt i64 %i.0, %N
41br i1 %cmp, label %for.body, label %for.end
42
43for.body: ; preds = %for.cond
44%sub = sub nsw i64 %i.0, 4
45%arrayidx = getelementptr inbounds i8, ptr %a, i64 %sub
46%0 = load i8, ptr %arrayidx, align 1
47%conv = sext i8 %0 to i64
48%add = add nsw i64 %conv, %i.0
49%conv1 = trunc i64 %add to i8
50%arrayidx2 = getelementptr inbounds i8, ptr %a, i64 %i.0
51store i8 %conv1, ptr %arrayidx2, align 1
52%sub3 = sub nsw i64 %i.0, 6
53%arrayidx4 = getelementptr inbounds i8, ptr %b, i64 %sub3
54%1 = load i8, ptr %arrayidx4, align 1
55%conv5 = sext i8 %1 to i64
56%add6 = add nsw i64 %conv5, %i.0
57%conv7 = trunc i64 %add6 to i8
58%arrayidx8 = getelementptr inbounds i8, ptr %b, i64 %i.0
59store i8 %conv7, ptr %arrayidx8, align 1
60br label %for.inc
61
62for.inc: ; preds = %for.body
63%inc = add nsw i64 %i.0, 1
64br label %for.cond
65
66for.end: ; preds = %for.cond
67ret void
68}
69
70attributes #0 = { nounwind uwtable "disable-tail-calls"="false" "less-precise-fpmad"="false" "frame-pointer"="all" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+fxsr,+mmx,+sse,+sse2" "unsafe-fp-math"="false" "use-soft-float"="false" }
71
72!llvm.ident = !{!0}
73
74!0 = !{!"clang version 3.9.0"}
75