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body10
2020 May 17
2
Question about the order of predecessors in LoopVectorizer with VPlanNatviePath
...dy:
...
br label %for.body10.preheader67
for.body10.preheader67: ; preds =
%for.cond.cleanup972, %vector.body
%vec.phi = phi <4 x i64> [ zeroinitializer, %for.cond.cleanup972 ],
[ %8, %vector.body ]
...
for.cond.cleanup972: ; preds = %for.body1068
%8 = add nuw nsw <4 x i64> %vec.phi, <i64 1, i64 1, i64 1, i64 1>
...
br i1 %10, label %for.cond.cleanup373, label %for.body10.preheader67
As you can see, %vec.phi has wrong incoming basic blocks. It could be as below.
%vec.phi = phi <4 x i64> [ %8, %for.cond.cleanup972 ], [...