forked from OSchip/llvm-project
50 lines
1.1 KiB
LLVM
50 lines
1.1 KiB
LLVM
; RUN: opt %loadPolly -polly-optree-normalize-phi=true -polly-optree -analyze < %s | FileCheck %s -match-full-lines
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;
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; Contains a self-referencing PHINode that would require a
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; transitive closure to handle.
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;
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; for (int j = 0; j < n; j += 1) {
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; double phi = 0.0;
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; for (int i = 0; i < m; i += 1)
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; phi = phi;
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; A[j] = phi;
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; }
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;
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define void @func(i32 %n, i32 %m, double* noalias nonnull %A) {
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entry:
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br label %for
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for:
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%j = phi i32 [0, %entry], [%j.inc, %inc]
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%j.cmp = icmp slt i32 %j, %n
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br i1 %j.cmp, label %for.preheader, label %exit
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for.preheader:
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br label %for.inner
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for.inner:
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%i = phi i32 [0, %for.preheader], [%i.inc, %for.inner]
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%phi = phi double [0.0, %for.preheader], [%phi, %for.inner]
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%i.inc = add nuw nsw i32 %i, 1
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%i.cmp = icmp slt i32 %i.inc, %m
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br i1 %i.cmp, label %for.inner, label %for.exit
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for.exit:
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%A_idx = getelementptr inbounds double, double* %A, i32 %j
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store double %phi, double* %A_idx
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br label %inc
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inc:
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%j.inc = add nuw nsw i32 %j, 1
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br label %for
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exit:
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br label %return
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return:
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ret void
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}
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; CHECK: ForwardOpTree executed, but did not modify anything
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