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
|
; RUN: opt -passes='print<loopnest>' %s 2>&1 | FileCheck %s
@global = external dso_local global [1000 x [1000 x i32]], align 16
; CHECK: IsPerfect=true, Depth=1, OutermostLoop: inner.header, Loops: ( inner.header )
; CHECK-NEXT: IsPerfect=true, Depth=2, OutermostLoop: outer.header, Loops: ( outer.header inner.header )
define void @foo1(i1 %cmp) {
entry:
br i1 %cmp, label %bb1, label %bb1
bb1: ; preds = %entry, %entry
br i1 %cmp, label %outer.header.preheader, label %outer.header.preheader
outer.header.preheader: ; preds = %bb1, %bb1
br label %outer.header
outer.header: ; preds = %outer.header.preheader, %outer.latch
%outer.iv = phi i64 [ %outer.iv.next, %outer.latch ], [ 0, %outer.header.preheader ]
br i1 %cmp, label %inner.header.preheader, label %inner.header.preheader
inner.header.preheader: ; preds = %outer.header, %outer.header
br label %inner.header
inner.header: ; preds = %inner.header.preheader, %inner.header
%inner.iv = phi i64 [ %inner.iv.next, %inner.header ], [ 5, %inner.header.preheader ]
%ptr = getelementptr inbounds [1000 x [1000 x i32]], [1000 x [1000 x i32]]* @global, i64 0, i64 %inner.iv, i64 %outer.iv
%lv = load i32, i32* %ptr, align 4
%v = mul i32 %lv, 100
store i32 %v, i32* %ptr, align 4
%inner.iv.next = add nsw i64 %inner.iv, 1
%cond1 = icmp eq i64 %inner.iv.next, 1000
br i1 %cond1, label %outer.latch, label %inner.header
outer.latch: ; preds = %inner.header
%outer.iv.next = add nuw nsw i64 %outer.iv, 1
%cond2 = icmp eq i64 %outer.iv.next, 1000
br i1 %cond2, label %bb9, label %outer.header
bb9: ; preds = %outer.latch
br label %bb10
bb10: ; preds = %bb9
ret void
}
|
