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
| ; RUN: opt %loadPolly -basicaa -polly-stmt-granularity=bb -polly-scops -analyze < %s | FileCheck %s
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
;long f(long a[], long n) {
; long i, k;
; k = 1;
; for (i = 1; i < n; ++i) {
; a[i] = k * a[i - 1];
; k = a[i + 3] + a[2 * i];
; }
; return 0;
;}
define i64 @f(i64* nocapture %a, i64 %n) nounwind {
entry:
%0 = icmp sgt i64 %n, 1 ; <i1> [#uses=1]
br i1 %0, label %bb.nph, label %bb2
bb.nph: ; preds = %entry
%tmp = add i64 %n, -1 ; <i64> [#uses=1]
%.pre = load i64, i64* %a, align 8 ; <i64> [#uses=1]
br label %bb
bb: ; preds = %bb, %bb.nph
%tmp1 = phi i64 [ %.pre, %bb.nph ], [ %tmp2, %bb ] ; <i64> [#uses=1]
%indvar = phi i64 [ 0, %bb.nph ], [ %tmp6, %bb ] ; <i64> [#uses=3]
%k.05 = phi i64 [ 1, %bb.nph ], [ %tmp5, %bb ] ; <i64> [#uses=1]
%tmp6 = add i64 %indvar, 1 ; <i64> [#uses=3]
%scevgep = getelementptr i64, i64* %a, i64 %tmp6 ; <i64*> [#uses=1]
%tmp2 = mul nsw i64 %tmp1, %k.05 ; <i64> [#uses=2]
store i64 %tmp2, i64* %scevgep, align 8
%tmp7 = shl i64 %indvar, 1 ; <i64> [#uses=1]
%tmp11 = add i64 %indvar, 4 ; <i64> [#uses=1]
%tmp8 = add i64 %tmp7, 2 ; <i64> [#uses=1]
%scevgep12 = getelementptr i64, i64* %a, i64 %tmp11 ; <i64*> [#uses=1]
%scevgep9 = getelementptr i64, i64* %a, i64 %tmp8 ; <i64*> [#uses=1]
%tmp3 = load i64, i64* %scevgep9, align 8 ; <i64> [#uses=1]
%tmp4 = load i64, i64* %scevgep12, align 8 ; <i64> [#uses=1]
%tmp5 = add nsw i64 %tmp3, %tmp4 ; <i64> [#uses=1]
%exitcond = icmp eq i64 %tmp6, %tmp ; <i1> [#uses=1]
br i1 %exitcond, label %bb2, label %bb
bb2: ; preds = %bb, %entry
ret i64 0
}
; CHECK: Statements {
; CHECK-NEXT: Stmt_bb
; CHECK-NEXT: Domain :=
; CHECK-NEXT: [n] -> { Stmt_bb[i0] : 0 <= i0 <= -2 + n };
; CHECK-NEXT: Schedule :=
; CHECK-NEXT: [n] -> { Stmt_bb[i0] -> [i0] };
; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1]
; CHECK-NEXT: [n] -> { Stmt_bb[i0] -> MemRef_tmp1__phi[] };
; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 1]
; CHECK-NEXT: [n] -> { Stmt_bb[i0] -> MemRef_tmp1__phi[] };
; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1]
; CHECK-NEXT: [n] -> { Stmt_bb[i0] -> MemRef_k_05__phi[] };
; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 1]
; CHECK-NEXT: [n] -> { Stmt_bb[i0] -> MemRef_k_05__phi[] };
; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 0]
; CHECK-NEXT: [n] -> { Stmt_bb[i0] -> MemRef_a[1 + i0] };
; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 0]
; CHECK-NEXT: [n] -> { Stmt_bb[i0] -> MemRef_a[2 + 2i0] };
; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 0]
; CHECK-NEXT: [n] -> { Stmt_bb[i0] -> MemRef_a[4 + i0] };
; CHECK-NEXT: }
|