diff options
Diffstat (limited to 'test/Transforms/LoopSimplify/2012-03-20-indirectbr.ll')
| -rw-r--r-- | test/Transforms/LoopSimplify/2012-03-20-indirectbr.ll | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/test/Transforms/LoopSimplify/2012-03-20-indirectbr.ll b/test/Transforms/LoopSimplify/2012-03-20-indirectbr.ll new file mode 100644 index 0000000..9c805da --- /dev/null +++ b/test/Transforms/LoopSimplify/2012-03-20-indirectbr.ll @@ -0,0 +1,41 @@ +; RUN: opt < %s -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 i8* blockaddress(@build_regex_nfa, %while.cond), [label %while.cond] + +while.cond: ; preds = %if.then439, %entry + indirectbr i8* blockaddress(@build_regex_nfa, %sw.bb103), [label %do.body785, label %sw.bb103] + +sw.bb103: ; preds = %while.body + indirectbr i8* 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 i8* blockaddress(@build_regex_nfa, %Lsetdone), [label %sw.bb118, label %Lsetdone] + +sw.bb118: ; preds = %while.cond112 + indirectbr i8* blockaddress(@build_regex_nfa, %for.cond.preheader), [label %Lerror.loopexit, label %for.cond.preheader] + +for.cond.preheader: ; preds = %sw.bb118 + indirectbr i8* blockaddress(@build_regex_nfa, %for.body), [label %while.cond112, label %for.body] + +for.body: ; preds = %for.body, %for.cond.preheader + indirectbr i8* 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 +} |
