llvm-project/llvm/test/Transforms/SSI/2009-08-15-UnreachableBB.ll

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; RUN: opt < %s -ssi-everything -disable-output
declare fastcc i32 @ras_Empty(i8** nocapture) nounwind readonly
define i32 @cc_Tautology() nounwind {
entry:
unreachable
cc_InitData.exit: ; No predecessors!
%0 = call fastcc i32 @ras_Empty(i8** undef) nounwind ; <i32> [#uses=1]
%1 = icmp eq i32 %0, 0 ; <i1> [#uses=1]
br i1 %1, label %bb2, label %bb6
bb2: ; preds = %cc_InitData.exit
unreachable
bb6: ; preds = %cc_InitData.exit
ret i32 undef
}