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236
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1 ; RUN: opt %loadPolly \
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2 ; RUN: -S -polly-codegen < %s | FileCheck %s
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3 ;
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4 ; void f(int *A, int N) {
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5 ; for (int i = 0; i < N; i++)
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6 ; if (A[i])
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7 ; switch (i % 4) {
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8 ; case 0:
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9 ; A[i] += 1;
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10 ; break;
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11 ; case 1:
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12 ; A[i] += 2;
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13 ; break;
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14 ; }
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15 ; }
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16 ;
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17 ; CHECK: polly.stmt.if.then:
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18 ; CHECK: %1 = trunc i64 %polly.indvar to i32
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19 ; CHECK: %p_rem = srem i32 %1, 4
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20 ; CHECK: switch i32 %p_rem, label %polly.stmt.sw.epilog [
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21 ; CHECK: i32 0, label %polly.stmt.sw.bb
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22 ; CHECK: i32 1, label %polly.stmt.sw.bb.3
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23 ; CHECK: ]
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24 ;
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25 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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26
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27 define void @f(i32* %A, i32 %N) {
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28 entry:
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29 %tmp = sext i32 %N to i64
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30 br label %for.cond
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31
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32 for.cond: ; preds = %for.inc, %entry
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33 %indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ 0, %entry ]
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34 %cmp = icmp slt i64 %indvars.iv, %tmp
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35 br i1 %cmp, label %for.body, label %for.end
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36
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37 for.body: ; preds = %for.cond
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38 %arrayidx = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
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39 %tmp1 = load i32, i32* %arrayidx, align 4
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40 %tobool = icmp eq i32 %tmp1, 0
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41 br i1 %tobool, label %if.end, label %if.then
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42
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43 if.then: ; preds = %for.body
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44 %tmp2 = trunc i64 %indvars.iv to i32
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45 %rem = srem i32 %tmp2, 4
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46 switch i32 %rem, label %sw.epilog [
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47 i32 0, label %sw.bb
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48 i32 1, label %sw.bb.3
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49 ]
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50
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51 sw.bb: ; preds = %if.then
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52 %arrayidx2 = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
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53 %tmp3 = load i32, i32* %arrayidx2, align 4
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54 %add = add nsw i32 %tmp3, 1
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55 store i32 %add, i32* %arrayidx2, align 4
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56 br label %sw.epilog
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57
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58 sw.bb.3: ; preds = %if.then
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59 %arrayidx5 = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
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60 %tmp4 = load i32, i32* %arrayidx5, align 4
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61 %add6 = add nsw i32 %tmp4, 2
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62 store i32 %add6, i32* %arrayidx5, align 4
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63 br label %sw.epilog
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64
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65 sw.epilog: ; preds = %sw.bb.3, %sw.bb, %if.then
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66 br label %if.end
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67
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68 if.end: ; preds = %for.body, %sw.epilog
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69 br label %for.inc
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70
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71 for.inc: ; preds = %if.end
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72 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
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73 br label %for.cond
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74
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75 for.end: ; preds = %for.cond
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76 ret void
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77 }
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