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
|
; RUN: opt %loadPolly -basic-aa -polly-print-detect -disable-output < %s | FileCheck %s -check-prefix=PHI
; void f(long A[], long N, long *init_ptr) {
; long i, j;
; long i_non_canonical;
;
; for (i = 0; i < N; ++i) {
; init = *init_ptr;
; i_non_canonical = init;
; for (i = 0; i < N; ++i) {
; A[i] = i_non_canonical;
; i_non_canonical += 1;
; }
; }
; }
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"
define void @f(ptr noalias %A, i64 %N, ptr noalias %init_ptr) nounwind {
entry:
br label %for.i
for.i:
%indvar.i = phi i64 [ 0, %entry ], [ %indvar.i.next, %for.i.end ]
%indvar.i.next = add nsw i64 %indvar.i, 1
br label %entry.next
entry.next:
%init = load i64, ptr %init_ptr
br label %for.j
for.j:
%indvar.j = phi i64 [ 0, %entry.next ], [ %indvar.j.next, %for.j ]
%indvar.j.non_canonical = phi i64 [ %init, %entry.next ], [ %indvar.j.non_canonical.next, %for.j ]
%scevgep = getelementptr i64, ptr %A, i64 %indvar.j
store i64 %indvar.j.non_canonical, ptr %scevgep
%indvar.j.next = add nsw i64 %indvar.j, 1
%indvar.j.non_canonical.next = add nsw i64 %indvar.j.non_canonical, 1
%exitcond.j = icmp eq i64 %indvar.j.next, %N
br i1 %exitcond.j, label %for.i.end, label %for.j
for.i.end:
%exitcond.i = icmp eq i64 %indvar.i.next, %N
br i1 %exitcond.i, label %return, label %for.i
return:
ret void
}
; PHI: Valid Region for Scop: for.i => return
|
