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
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
|
; RUN: opt -opaque-pointers=0 %loadPolly -basic-aa -polly-print-ast -disable-output < %s | FileCheck %s
; RUN: opt -opaque-pointers=0 %loadPolly -basic-aa -polly-codegen < %s | opt -opaque-pointers=0 -passes='print<loops>' -disable-output 2>&1 | FileCheck %s -check-prefix=LOOPS
;#include <string.h>
;#define N 1024
;int A[N];
;int B[N];
;
;void loop_with_condition() {
; int i;
;
; __sync_synchronize();
; for (i = 0; i < N; i++) {
; if (i <= N / 2) {
; if (i > 20)
; A[i] = 1;
; else
; A[i] = 2;
; }
; B[i] = 3;
; }
; __sync_synchronize();
;}
;
;int main () {
; int i;
;
; memset(A, 0, sizeof(int) * N);
; memset(B, 0, sizeof(int) * N);
;
; loop_with_condition();
;
; for (i = 0; i < N; i++)
; if (B[i] != 3)
; return 1;
;
; for (i = 0; i < N; i++)
; if (i <= N / 2 && i > 20 && A[i] != 1)
; return 1;
; else if (i > N / 2) {
; if (i <= 20 && A[i] != 2)
; return 1;
; if (i > 20 && A[i] != 0)
; return 1;
; }
; return 0;
;}
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"
@A = common global [1024 x i32] zeroinitializer, align 16 ; <[1024 x i32]*> [#uses=4]
@B = common global [1024 x i32] zeroinitializer, align 16 ; <[1024 x i32]*> [#uses=4]
define void @loop_with_condition() nounwind {
bb0:
fence seq_cst
br label %bb1
bb1:
%indvar = phi i64 [ %indvar.next, %bb10 ], [ 0, %bb0 ] ; <i64> [#uses=5]
%scevgep = getelementptr [1024 x i32], [1024 x i32]* @A, i64 0, i64 %indvar ; <i32*> [#uses=2]
%scevgep1 = getelementptr [1024 x i32], [1024 x i32]* @B, i64 0, i64 %indvar ; <i32*> [#uses=1]
%i.0 = trunc i64 %indvar to i32 ; <i32> [#uses=2]
%exitcond = icmp ne i64 %indvar, 1024 ; <i1> [#uses=1]
br i1 %exitcond, label %bb2, label %bb11
bb2:
%var3 = icmp sle i32 %i.0, 512 ; <i1> [#uses=1]
br i1 %var3, label %bb4, label %bb9
bb4:
%var5 = icmp sgt i32 %i.0, 20 ; <i1> [#uses=1]
br i1 %var5, label %bb6, label %bb7
bb6:
store i32 1, i32* %scevgep
br label %bb8
bb7:
store i32 2, i32* %scevgep
br label %bb8
bb8:
br label %bb9
bb9:
store i32 3, i32* %scevgep1
br label %bb10
bb10:
%indvar.next = add i64 %indvar, 1 ; <i64> [#uses=1]
br label %bb1
bb11:
fence seq_cst
ret void
}
define i32 @main() nounwind {
; <label>:0
call void @llvm.memset.p0i8.i64(i8* bitcast ([1024 x i32]* @A to i8*), i8 0, i64 4096, i32 1, i1 false)
call void @llvm.memset.p0i8.i64(i8* bitcast ([1024 x i32]* @B to i8*), i8 0, i64 4096, i32 1, i1 false)
call void @loop_with_condition()
br label %1
; <label>:1 ; preds = %8, %0
%indvar1 = phi i64 [ %indvar.next2, %8 ], [ 0, %0 ] ; <i64> [#uses=3]
%scevgep3 = getelementptr [1024 x i32], [1024 x i32]* @B, i64 0, i64 %indvar1 ; <i32*> [#uses=1]
%i.0 = trunc i64 %indvar1 to i32 ; <i32> [#uses=1]
%2 = icmp slt i32 %i.0, 1024 ; <i1> [#uses=1]
br i1 %2, label %3, label %9
; <label>:3 ; preds = %1
%4 = load i32, i32* %scevgep3 ; <i32> [#uses=1]
%5 = icmp ne i32 %4, 3 ; <i1> [#uses=1]
br i1 %5, label %6, label %7
; <label>:6 ; preds = %3
br label %39
; <label>:7 ; preds = %3
br label %8
; <label>:8 ; preds = %7
%indvar.next2 = add i64 %indvar1, 1 ; <i64> [#uses=1]
br label %1
; <label>:9 ; preds = %1
br label %10
; <label>:10 ; preds = %37, %9
%indvar = phi i64 [ %indvar.next, %37 ], [ 0, %9 ] ; <i64> [#uses=3]
%scevgep = getelementptr [1024 x i32], [1024 x i32]* @A, i64 0, i64 %indvar ; <i32*> [#uses=3]
%i.1 = trunc i64 %indvar to i32 ; <i32> [#uses=6]
%11 = icmp slt i32 %i.1, 1024 ; <i1> [#uses=1]
br i1 %11, label %12, label %38
; <label>:12 ; preds = %10
%13 = icmp sle i32 %i.1, 512 ; <i1> [#uses=1]
br i1 %13, label %14, label %20
; <label>:14 ; preds = %12
%15 = icmp sgt i32 %i.1, 20 ; <i1> [#uses=1]
br i1 %15, label %16, label %20
; <label>:16 ; preds = %14
%17 = load i32, i32* %scevgep ; <i32> [#uses=1]
%18 = icmp ne i32 %17, 1 ; <i1> [#uses=1]
br i1 %18, label %19, label %20
; <label>:19 ; preds = %16
br label %39
; <label>:20 ; preds = %16, %14, %12
%21 = icmp sgt i32 %i.1, 512 ; <i1> [#uses=1]
br i1 %21, label %22, label %35
; <label>:22 ; preds = %20
%23 = icmp sle i32 %i.1, 20 ; <i1> [#uses=1]
br i1 %23, label %24, label %28
; <label>:24 ; preds = %22
%25 = load i32, i32* %scevgep ; <i32> [#uses=1]
%26 = icmp ne i32 %25, 2 ; <i1> [#uses=1]
br i1 %26, label %27, label %28
; <label>:27 ; preds = %24
br label %39
; <label>:28 ; preds = %24, %22
%29 = icmp sgt i32 %i.1, 20 ; <i1> [#uses=1]
br i1 %29, label %30, label %34
; <label>:30 ; preds = %28
%31 = load i32, i32* %scevgep ; <i32> [#uses=1]
%32 = icmp ne i32 %31, 0 ; <i1> [#uses=1]
br i1 %32, label %33, label %34
; <label>:33 ; preds = %30
br label %39
; <label>:34 ; preds = %30, %28
br label %35
; <label>:35 ; preds = %34, %20
br label %36
; <label>:36 ; preds = %35
br label %37
; <label>:37 ; preds = %36
%indvar.next = add i64 %indvar, 1 ; <i64> [#uses=1]
br label %10
; <label>:38 ; preds = %10
br label %39
; <label>:39 ; preds = %38, %33, %27, %19, %6
%.0 = phi i32 [ 1, %6 ], [ 1, %19 ], [ 1, %27 ], [ 1, %33 ], [ 0, %38 ] ; <i32> [#uses=1]
ret i32 %.0
}
declare void @llvm.memset.p0i8.i64(i8* nocapture, i8, i64, i32, i1) nounwind
; CHECK: for (int c0 = 0; c0 <= 1023; c0 += 1) {
; CHECK: if (c0 <= 20) {
; CHECK: Stmt_bb7(c0);
; CHECK: } else if (c0 <= 512)
; CHECK: Stmt_bb6(c0);
; CHECK: Stmt_bb9(c0);
; CHECK: }
; LOOPS-DAG: Loop at depth 1 containing: %bb1<header><exiting>,%bb2,%bb4,%bb7,%bb6,%bb8,%bb9,%bb10<latch>
; LOOPS-DAG: Loop at depth 1 containing: %polly.loop_header<header>,%polly.cond,%polly.else,%polly.cond3,%polly.else6,%polly.then5,%polly.stmt.bb6,%polly.merge4,%polly.then,%polly.stmt.bb7,%polly.merge,%polly.stmt.bb9<latch><exiting>
|
