llvm-project

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; RUN: opt %loadNPMPolly -passes=polly-codegen -S < %s | FileCheck %s
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;
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; The entry of this scop's simple region (entry.split => for.end) has an trivial
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; PHI node that is used in a different of the scop region. LCSSA may create such
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; PHI nodes. This is a breakdown of this case in the function 'mp_unexp_sub' of
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; pifft from LLVM's test-suite.
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;
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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define void @test(i64 %n, ptr noalias nonnull %A, float %a) {
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entry:
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  br label %entry.split
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; CHECK-LABEL: polly.start:
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; CHECK:         store float %a, ptr %b.phiops
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entry.split:
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  %b = phi float [ %a, %entry ]
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  %cmp2 = icmp slt i64 %n, 5
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  br i1 %cmp2, label %for.cond, label %for.end
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for.cond:                                         ; preds = %for.inc, %entry
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  %i.0 = phi i64 [ 0, %entry.split ], [ %add, %for.inc ]
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  %cmp = icmp slt i64 %i.0, %n
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  br i1 %cmp, label %for.body, label %for.end
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for.body:                                         ; preds = %for.cond
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  %arrayidx = getelementptr inbounds float, ptr %A, i64 %i.0
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  store float %b, ptr %arrayidx, align 4
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  br label %for.inc
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for.inc:                                          ; preds = %for.body
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  %add = add nuw nsw i64 %i.0, 1
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  br label %for.cond
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for.end:                                          ; preds = %for.cond
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  ret void
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}
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