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comparison polly/test/ForwardOpTree/noforward_load_conditional.ll @ 150:1d019706d866

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LLVM10
author anatofuz
date Thu, 13 Feb 2020 15:10:13 +0900
parents
children c4bab56944e8
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147:c2174574ed3a 150:1d019706d866
1 ; RUN: opt %loadPolly -polly-optree -analyze < %s | FileCheck %s -match-full-lines
2 ;
3 ; B[j] is overwritten by at least one statement between the
4 ; definition of %val and its use. Hence, it cannot be forwarded.
5 ;
6 ; for (int j = 0; j < n; j += 1) {
7 ; bodyA:
8 ; double val = B[j];
9 ; if (j < 1) {
10 ; bodyA_true:
11 ; B[j] = 0.0;
12 ; }
13 ;
14 ; bodyB:
15 ; A[j] = val;
16 ; }
17 ;
18 define void @func(i32 %n, double* noalias nonnull %A, double* noalias nonnull %B) {
19 entry:
20 br label %for
21
22 for:
23 %j = phi i32 [0, %entry], [%j.inc, %inc]
24 %j.cmp = icmp slt i32 %j, %n
25 br i1 %j.cmp, label %bodyA, label %exit
26
27 bodyA:
28 %B_idx = getelementptr inbounds double, double* %B, i32 %j
29 %val = load double, double* %B_idx
30 %cond = icmp slt i32 %j, 1
31 br i1 %cond, label %bodyA_true, label %bodyB
32
33 bodyA_true:
34 store double 0.0, double* %B_idx
35 br label %bodyB
36
37 bodyB:
38 %A_idx = getelementptr inbounds double, double* %A, i32 %j
39 store double %val, double* %A_idx
40 br label %inc
41
42 inc:
43 %j.inc = add nuw nsw i32 %j, 1
44 br label %for
45
46 exit:
47 br label %return
48
49 return:
50 ret void
51 }
52
53
54 ; CHECK: ForwardOpTree executed, but did not modify anything