1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
|
; RUN: opt %loadPolly -basic-aa -polly-stmt-granularity=bb -polly-print-ast -polly-ast-detect-parallel -disable-output < %s | FileCheck %s
; RUN: opt %loadPolly -polly-stmt-granularity=bb -print-polyhedral-info -polly-check-parallel -disable-output < %s | FileCheck %s -check-prefix=PINFO
;
; void f(int *restrict A, int *restrict B, int *restrict C, int *restrict D,
; int *restrict E, int N) {
; CHECK: #pragma minimal dependence distance: N >= 35 ? 1 : N >= 17 && N <= 34 ? 2 : 5
; PINFO: for.cond: Loop is not parallel.
; for (int i = 0; i < N; i++) {
; A[i] = A[100 - 2 * i] + 1;
; B[i] = B[100 - 3 * i] + 1;
; C[i] = C[100 - 4 * i] + 1;
; D[i] = D[100 - 5 * i] + 1;
; E[i] = E[100 - 6 * i] + 1;
; }
; }
;
target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-n32-S64"
define void @f(ptr noalias %A, ptr noalias %B, ptr noalias %C, ptr noalias %D, ptr noalias %E, i32 %N) {
entry:
br label %for.cond
for.cond: ; preds = %for.inc, %entry
%i.0 = phi i32 [ 0, %entry ], [ %inc, %for.inc ]
%cmp = icmp slt i32 %i.0, %N
br i1 %cmp, label %for.body, label %for.end
for.body: ; preds = %for.cond
%mul = shl nsw i32 %i.0, 1
%sub = sub nsw i32 100, %mul
%arrayidx = getelementptr inbounds i32, ptr %A, i32 %sub
%tmp = load i32, ptr %arrayidx, align 4
%add = add nsw i32 %tmp, 1
%arrayidx1 = getelementptr inbounds i32, ptr %A, i32 %i.0
store i32 %add, ptr %arrayidx1, align 4
%tmp1 = mul i32 %i.0, -3
%sub3 = add i32 %tmp1, 100
%arrayidx4 = getelementptr inbounds i32, ptr %B, i32 %sub3
%tmp2 = load i32, ptr %arrayidx4, align 4
%add5 = add nsw i32 %tmp2, 1
%arrayidx6 = getelementptr inbounds i32, ptr %B, i32 %i.0
store i32 %add5, ptr %arrayidx6, align 4
%mul7 = shl nsw i32 %i.0, 2
%sub8 = sub nsw i32 100, %mul7
%arrayidx9 = getelementptr inbounds i32, ptr %C, i32 %sub8
%tmp3 = load i32, ptr %arrayidx9, align 4
%add10 = add nsw i32 %tmp3, 1
%arrayidx11 = getelementptr inbounds i32, ptr %C, i32 %i.0
store i32 %add10, ptr %arrayidx11, align 4
%tmp4 = mul i32 %i.0, -5
%sub13 = add i32 %tmp4, 100
%arrayidx14 = getelementptr inbounds i32, ptr %D, i32 %sub13
%tmp5 = load i32, ptr %arrayidx14, align 4
%add15 = add nsw i32 %tmp5, 1
%arrayidx16 = getelementptr inbounds i32, ptr %D, i32 %i.0
store i32 %add15, ptr %arrayidx16, align 4
%tmp6 = mul i32 %i.0, -6
%sub18 = add i32 %tmp6, 100
%arrayidx19 = getelementptr inbounds i32, ptr %E, i32 %sub18
%tmp7 = load i32, ptr %arrayidx19, align 4
%add20 = add nsw i32 %tmp7, 1
%arrayidx21 = getelementptr inbounds i32, ptr %E, i32 %i.0
store i32 %add20, ptr %arrayidx21, align 4
br label %for.inc
for.inc: ; preds = %for.body
%inc = add nsw i32 %i.0, 1
br label %for.cond
for.end: ; preds = %for.cond
ret void
}
|
