forked from OSchip/llvm-project
31 lines
1.2 KiB
LLVM
31 lines
1.2 KiB
LLVM
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; RUN: opt < %s -loop-vectorize -S | FileCheck %s
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; Out of the LCSSA form we could have 'phi i32 [ loop-invariant, %for.inc.2.i ]'
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; but the IR Verifier requires for PHI one entry for each predecessor of
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; it's parent basic block. The original PR14725 solution for the issue just
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; added 'undef' for an predecessor BB and which is not correct. We copy the real
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; value for another predecessor instead of bringing 'undef'.
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; CHECK-LABEL: for.cond.preheader:
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; CHECK: %e.0.ph = phi i32 [ 0, %if.end.2.i ], [ 0, %middle.block ]
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; Function Attrs: nounwind uwtable
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define void @main() #0 {
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entry:
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br label %for.cond1.preheader.i
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for.cond1.preheader.i: ; preds = %if.end.2.i, %entry
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%c.06.i = phi i32 [ 0, %entry ], [ %inc5.i, %if.end.2.i ]
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%tobool.i = icmp ne i32 undef, 0
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br label %if.end.2.i
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if.end.2.i: ; preds = %for.cond1.preheader.i
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%inc5.i = add nsw i32 %c.06.i, 1
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%cmp.i = icmp slt i32 %inc5.i, 16
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br i1 %cmp.i, label %for.cond1.preheader.i, label %for.cond.preheader
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for.cond.preheader: ; preds = %if.end.2.i
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%e.0.ph = phi i32 [ 0, %if.end.2.i ]
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unreachable
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}
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