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annotate polly/test/ForwardOpTree/forward_load_unrelatedunusual.ll @ 236:c4bab56944e8 llvm-original

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LLVM 16
author kono
date Wed, 09 Nov 2022 17:45:10 +0900
parents 0572611fdcc8
children 1f2b6ac9f198
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rev   line source
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c4bab56944e8 LLVM 16
kono
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1 ; RUN: opt %loadPolly -polly-print-optree -disable-output < %s | FileCheck %s -match-full-lines
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2 ;
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3 ; Rematerialize a load.
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4 ; The non-analyzable store to C[0] is unrelated and can be ignored.
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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 ; C[0] = 21.0;
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10 ; C[0] = 42.0;
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11 ;
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12 ; bodyB:
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13 ; A[j] = val;
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14 ; }
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15 ;
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16 define void @func(i32 %n, double* noalias nonnull %A, double* noalias nonnull %B, double *noalias %C) {
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17 entry:
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18 br label %for
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19
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20 for:
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21 %j = phi i32 [0, %entry], [%j.inc, %inc]
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22 %j.cmp = icmp slt i32 %j, %n
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23 br i1 %j.cmp, label %bodyA, label %exit
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24
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25 bodyA:
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26 %B_idx = getelementptr inbounds double, double* %B, i32 %j
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27 %val = load double, double* %B_idx
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28 store double 21.0, double* %C
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29 store double 41.0, double* %C
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30 br label %bodyB
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31
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32 bodyB:
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33 %A_idx = getelementptr inbounds double, double* %A, i32 %j
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34 store double %val, double* %A_idx
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35 br label %inc
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36
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37 inc:
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38 %j.inc = add nuw nsw i32 %j, 1
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39 br label %for
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40
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41 exit:
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42 br label %return
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43
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44 return:
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45 ret void
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46 }
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47
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48
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49 ; CHECK: Statistics {
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50 ; CHECK: Known loads forwarded: 1
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51 ; CHECK: Operand trees forwarded: 1
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52 ; CHECK: Statements with forwarded operand trees: 1
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53 ; CHECK: }
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54
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55 ; CHECK: Stmt_bodyB
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56 ; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 0]
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57 ; CHECK-NEXT: ;
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58 ; CHECK-NEXT: new: [n] -> { Stmt_bodyB[i0] -> MemRef_B[i0] };
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59 ; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 0]
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60 ; CHECK-NEXT: [n] -> { Stmt_bodyB[i0] -> MemRef_A[i0] };
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61 ; CHECK-NEXT: Instructions {
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62 ; CHECK-NEXT: %val = load double, double* %B_idx, align 8
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63 ; CHECK-NEXT: store double %val, double* %A_idx, align 8
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64 ; CHECK-NEXT: }