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LV: add crash-test for incomplete cases in VPlan #93551

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LV: add crash-test for incomplete cases in VPlan #93551

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25 changes: 25 additions & 0 deletions llvm/test/Transforms/LoopVectorize/vplan-incomplete-cases.ll
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; REQUIRES: asserts
; RUN: not --crash opt %s -passes=loop-vectorize -S

define void @vplan_incomplete_cases_tc3(i8 %x, i8 %y) {
entry:
br label %loop.header

loop.header: ; preds = %latch, %entry
%iv = phi i8 [ %iv.next, %latch ], [ 0, %entry ]
%and = and i8 %x, %y
%extract.t = trunc i8 %and to i1
br i1 %extract.t, label %latch, label %indirect.latch

indirect.latch: ; preds = %loop.header
br label %latch

latch: ; preds = %indirect.latch, loop.header
%iv.next = add i8 %iv, 1
%zext = zext i8 %iv to i32
%cmp = icmp ult i32 %zext, 2
br i1 %cmp, label %loop.header, label %exit

exit: ; preds = %latch
ret void
}
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