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; RUN: opt < %s -passes=loop-simplify -S | FileCheck %s
; Make sure the preheader exists.
; CHECK: sw.bb103:
; CHECK: indirectbr {{.*}}label %while.cond112
; CHECK: while.cond112:
; But the tail is not split.
; CHECK: for.body:
; CHECK: indirectbr {{.*}}label %while.cond112
define fastcc void @build_regex_nfa() nounwind uwtable ssp {
entry:
indirectbr ptr blockaddress(@build_regex_nfa, %while.cond), [label %while.cond]
while.cond: ; preds = %if.then439, %entry
indirectbr ptr blockaddress(@build_regex_nfa, %sw.bb103), [label %do.body785, label %sw.bb103]
sw.bb103: ; preds = %while.body
indirectbr ptr blockaddress(@build_regex_nfa, %while.cond112), [label %while.cond112]
while.cond112: ; preds = %for.body, %for.cond.preheader, %sw.bb103
%pc.0 = phi i8 [ -1, %sw.bb103 ], [ 0, %for.body ], [ %pc.0, %for.cond.preheader ]
indirectbr ptr blockaddress(@build_regex_nfa, %Lsetdone), [label %sw.bb118, label %Lsetdone]
sw.bb118: ; preds = %while.cond112
indirectbr ptr blockaddress(@build_regex_nfa, %for.cond.preheader), [label %Lerror.loopexit, label %for.cond.preheader]
for.cond.preheader: ; preds = %sw.bb118
indirectbr ptr blockaddress(@build_regex_nfa, %for.body), [label %while.cond112, label %for.body]
for.body: ; preds = %for.body, %for.cond.preheader
indirectbr ptr blockaddress(@build_regex_nfa, %for.body), [label %while.cond112, label %for.body]
Lsetdone: ; preds = %while.cond112
unreachable
do.body785: ; preds = %while.cond, %while.body
ret void
Lerror.loopexit: ; preds = %sw.bb118
unreachable
}
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