invalidate_scalar_evolution.ll
1.15 KB
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
; RUN: opt %loadPolly -polly-detect -analyze < %s | FileCheck %s -check-prefix=PHI
; void f(long A[], long N) {
; long i;
; for (i = 0; i < N; ++i)
; A[i] = i;
; }
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(i64* %A, i64 %N, i64 %p) nounwind {
entry:
fence seq_cst
br label %pre
pre:
%p_tmp = srem i64 %p, 5
br i1 true, label %for.i, label %then
for.i:
%indvar = phi i64 [ 0, %pre ], [ %indvar.next, %for.i ]
%indvar.p1 = phi i64 [ 0, %pre ], [ %indvar.p1.next, %for.i ]
%indvar.p2 = phi i64 [ 0, %pre ], [ %indvar.p2.next, %for.i ]
%sum = add i64 %indvar, %indvar.p1
%sum2 = sub i64 %sum, %indvar.p2
%scevgep = getelementptr i64, i64* %A, i64 %indvar
store i64 %indvar, i64* %scevgep
%indvar.next = add nsw i64 %indvar, 1
%indvar.p1.next = add nsw i64 %indvar.p1, %p_tmp
%indvar.p2.next = add nsw i64 %indvar.p2, %p_tmp
%exitcond = icmp eq i64 %sum2, %N
br i1 %exitcond, label %then, label %for.i
then:
br label %return
return:
fence seq_cst
ret void
}
; PHI: Valid Region for Scop: pre => return