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 -S -structurizecfg %s -o - | FileCheck %s
;
; void loop(int *out, int cond_a, int cond_b) {
;
; unsigned i;
; for (i = 0; i < cond_a; i++) {
; out[i] = i;
; if (i > cond_b) {
; break;
; }
; out[i + cond_a] = i;
; }
; }
define void @loop(i32 addrspace(1)* %out, i32 %cond_a, i32 %cond_b) nounwind uwtable {
entry:
br label %for.cond
for.cond: ; preds = %for.inc, %entry
%i.0 = phi i32 [ 0, %entry ], [ %inc, %for.inc ]
%cmp = icmp ult i32 %i.0, %cond_a
br i1 %cmp, label %for.body, label %for.end
; CHECK: for.body:
for.body: ; preds = %for.cond
%arrayidx = getelementptr inbounds i32 addrspace(1)* %out, i32 %i.0
store i32 %i.0, i32 addrspace(1)* %arrayidx, align 4
%cmp1 = icmp ugt i32 %i.0, %cond_b
; CHECK: br i1 %{{[0-9a-zA-Z_]+}}, label %for.inc, label %[[FLOW1:[0-9a-zA-Z_]+]]
br i1 %cmp1, label %for.end, label %for.inc
; CHECK: [[FLOW:[0-9a-zA-Z]+]]:
; CHECK: br i1 %{{[0-9a-zA-Z_]+}}, label %for.end, label %for.cond
; CHECK: for.inc:
; CHECK: br label %[[FLOW1]]
for.inc: ; preds = %for.body
%0 = add i32 %cond_a, %i.0
%arrayidx3 = getelementptr inbounds i32 addrspace(1)* %out, i32 %0
store i32 %i.0, i32 addrspace(1)* %arrayidx3, align 4
%inc = add i32 %i.0, 1
br label %for.cond
; CHECK: [[FLOW1]]
; CHECK: br label %[[FLOW]]
for.end: ; preds = %for.cond, %for.body
ret void
}
|
