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236
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1 ; RUN: opt %loadPolly -polly-scops -polly-opt-isl -polly-codegen -polly-scops -polly-codegen -S < %s | FileCheck %s
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2 ; RUN: opt %loadNPMPolly "-passes=scop(polly-opt-isl,polly-codegen,polly-codegen)" -S < %s | FileCheck %s
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3 ; RUN: opt %loadNPMPolly "-passes=scop(polly-opt-isl,polly-codegen),scop(polly-codegen)" -S < %s | FileCheck %s
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4 ;
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5 ; llvm.org/PR34441
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6 ; Properly handle multiple -polly-scops/-polly-codegen in the same
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7 ; RegionPassManager. -polly-codegen must not reuse the -polly-ast analysis the
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8 ; was created for the first -polly-scops pass.
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9 ; The current solution is that only the first -polly-codegen is allowed to
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10 ; generate code, the second detects it is re-using an IslAst that belongs to a
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11 ; different ScopInfo.
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12 ;
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13 ; int a, b, c;
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14 ;
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15 ; int main () {
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16 ; while (a++)
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17 ; while (b) {
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18 ; c = 0;
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19 ; break;
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20 ; }
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21 ; return 0;
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22 ; }
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23 ;
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24 target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128"
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25
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26 @a = common global i32 0, align 4
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27 @b = common global i32 0, align 4
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28 @c = common global i32 0, align 4
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29
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30 ; Function Attrs: nounwind uwtable
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31 define i32 @main() {
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32 entry:
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33 %retval = alloca i32, align 4
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252
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34 store i32 0, ptr %retval, align 4
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35 %.pre = load i32, ptr @a, align 4
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236
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36 br label %while.cond
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37
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38 while.cond: ; preds = %while.end, %entry
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39 %0 = phi i32 [ %inc, %while.end ], [ %.pre, %entry ]
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40 %inc = add nsw i32 %0, 1
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252
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41 store i32 %inc, ptr @a, align 4
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236
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42 %tobool = icmp ne i32 %0, 0
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43 br i1 %tobool, label %while.body, label %while.end4
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44
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45 while.body: ; preds = %while.cond
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252
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46 %1 = load i32, ptr @b, align 4
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236
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47 %tobool2 = icmp ne i32 %1, 0
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48 br i1 %tobool2, label %while.body3, label %while.end
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49
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50 while.body3: ; preds = %while.body
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252
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51 store i32 0, ptr @c, align 4
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236
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52 br label %while.end
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53
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54 while.end: ; preds = %while.body3, %while.body
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55 br label %while.cond
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56
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57 while.end4: ; preds = %while.cond
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58 ret i32 0
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59 }
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60
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61
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62 ; CHECK: polly.start:
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63 ; CHECK-NOT: polly.start:
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