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236
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1 ; RUN: opt %loadPolly -polly-print-optree -disable-output < %s | FileCheck %s -match-full-lines
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150
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2 ;
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3 ; B[j] is overwritten by at least one statement between the
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4 ; definition of %val and its use. Hence, it cannot be forwarded.
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5 ;
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6 ; for (int j = 0; j < n; j += 1) {
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7 ; bodyA:
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8 ; double val = B[j];
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9 ; if (j < 1) {
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10 ; bodyA_true:
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11 ; B[j] = 0.0;
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12 ; }
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13 ;
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14 ; bodyB:
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15 ; A[j] = val;
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16 ; }
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17 ;
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252
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18 define void @func(i32 %n, ptr noalias nonnull %A, ptr noalias nonnull %B) {
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150
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19 entry:
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20 br label %for
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21
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22 for:
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23 %j = phi i32 [0, %entry], [%j.inc, %inc]
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24 %j.cmp = icmp slt i32 %j, %n
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25 br i1 %j.cmp, label %bodyA, label %exit
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26
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27 bodyA:
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252
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28 %B_idx = getelementptr inbounds double, ptr %B, i32 %j
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29 %val = load double, ptr %B_idx
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150
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30 %cond = icmp slt i32 %j, 1
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31 br i1 %cond, label %bodyA_true, label %bodyB
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32
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33 bodyA_true:
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252
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34 store double 0.0, ptr %B_idx
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150
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35 br label %bodyB
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36
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37 bodyB:
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252
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38 %A_idx = getelementptr inbounds double, ptr %A, i32 %j
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39 store double %val, ptr %A_idx
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150
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40 br label %inc
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41
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42 inc:
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43 %j.inc = add nuw nsw i32 %j, 1
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44 br label %for
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45
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46 exit:
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47 br label %return
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48
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49 return:
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50 ret void
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51 }
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52
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53
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54 ; CHECK: ForwardOpTree executed, but did not modify anything
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