llvm-project/llvm/test/Transforms/SimplifyCFG/switch-simplify-crash.ll

; RUN: llvm-as < %s | opt -simplifycfg -disable-output

define void @NewExtractNames() {
entry:
	br i1 false, label %endif.0, label %then.0
then.0:		; preds = %entry
	br i1 false, label %shortcirc_next.i, label %shortcirc_done.i
shortcirc_next.i:		; preds = %then.0
	br label %shortcirc_done.i
shortcirc_done.i:		; preds = %shortcirc_next.i, %then.0
	br i1 false, label %then.0.i, label %else.0.i
then.0.i:		; preds = %shortcirc_done.i
	br label %NewBase.exit
else.0.i:		; preds = %shortcirc_done.i
	br i1 false, label %endif.0.i, label %else.1.i
else.1.i:		; preds = %else.0.i
	br i1 false, label %endif.0.i, label %else.2.i
else.2.i:		; preds = %else.1.i
	br label %NewBase.exit
endif.0.i:		; preds = %else.1.i, %else.0.i
	br label %NewBase.exit
NewBase.exit:		; preds = %endif.0.i, %else.2.i, %then.0.i
	br label %endif.0
endif.0:		; preds = %NewBase.exit, %entry
	%tmp.32.mask = and i32 0, 31		; <i32> [#uses=1]
	switch i32 %tmp.32.mask, label %label.9 [
		 i32 16, label %loopentry.2
		 i32 15, label %loopentry.2
		 i32 14, label %loopentry.2
		 i32 13, label %loopentry.2
		 i32 10, label %loopentry.2
		 i32 20, label %loopentry.1
		 i32 19, label %loopentry.1
		 i32 2, label %loopentry.0
		 i32 0, label %switchexit
	]
loopentry.0:		; preds = %endif.1, %endif.0
	br i1 false, label %no_exit.0, label %switchexit
no_exit.0:		; preds = %loopentry.0
	br i1 false, label %then.1, label %else.1
then.1:		; preds = %no_exit.0
	br label %endif.1
else.1:		; preds = %no_exit.0
	br i1 false, label %shortcirc_next.0, label %shortcirc_done.0
shortcirc_next.0:		; preds = %else.1
	br label %shortcirc_done.0
shortcirc_done.0:		; preds = %shortcirc_next.0, %else.1
	br i1 false, label %then.2, label %endif.2
then.2:		; preds = %shortcirc_done.0
	br label %endif.2
endif.2:		; preds = %then.2, %shortcirc_done.0
	br label %endif.1
endif.1:		; preds = %endif.2, %then.1
	br label %loopentry.0
loopentry.1:		; preds = %endif.3, %endif.0, %endif.0
	br i1 false, label %no_exit.1, label %switchexit
no_exit.1:		; preds = %loopentry.1
	br i1 false, label %then.3, label %else.2
then.3:		; preds = %no_exit.1
	br label %endif.3
else.2:		; preds = %no_exit.1
	br i1 false, label %shortcirc_next.1, label %shortcirc_done.1
shortcirc_next.1:		; preds = %else.2
	br label %shortcirc_done.1
shortcirc_done.1:		; preds = %shortcirc_next.1, %else.2
	br i1 false, label %then.4, label %endif.4
then.4:		; preds = %shortcirc_done.1
	br label %endif.4
endif.4:		; preds = %then.4, %shortcirc_done.1
	br label %endif.3
endif.3:		; preds = %endif.4, %then.3
	br label %loopentry.1
loopentry.2:		; preds = %endif.5, %endif.0, %endif.0, %endif.0, %endif.0, %endif.0
	%i.3 = phi i32 [ 0, %endif.5 ], [ 0, %endif.0 ], [ 0, %endif.0 ], [ 0, %endif.0 ], [ 0, %endif.0 ], [ 0, %endif.0 ]		; <i32> [#uses=1]
	%tmp.158 = icmp slt i32 %i.3, 0		; <i1> [#uses=1]
	br i1 %tmp.158, label %no_exit.2, label %switchexit
no_exit.2:		; preds = %loopentry.2
	br i1 false, label %shortcirc_next.2, label %shortcirc_done.2
shortcirc_next.2:		; preds = %no_exit.2
	br label %shortcirc_done.2
shortcirc_done.2:		; preds = %shortcirc_next.2, %no_exit.2
	br i1 false, label %then.5, label %endif.5
then.5:		; preds = %shortcirc_done.2
	br label %endif.5
endif.5:		; preds = %then.5, %shortcirc_done.2
	br label %loopentry.2
label.9:		; preds = %endif.0
	br i1 false, label %then.6, label %endif.6
then.6:		; preds = %label.9
	br label %endif.6
endif.6:		; preds = %then.6, %label.9
	store i32 0, i32* null
	br label %switchexit
switchexit:		; preds = %endif.6, %loopentry.2, %loopentry.1, %loopentry.0, %endif.0
	br i1 false, label %endif.7, label %then.7
then.7:		; preds = %switchexit
	br i1 false, label %shortcirc_next.3, label %shortcirc_done.3
shortcirc_next.3:		; preds = %then.7
	br label %shortcirc_done.3
shortcirc_done.3:		; preds = %shortcirc_next.3, %then.7
	br i1 false, label %then.8, label %endif.8
then.8:		; preds = %shortcirc_done.3
	br label %endif.8
endif.8:		; preds = %then.8, %shortcirc_done.3
	br label %endif.7
endif.7:		; preds = %endif.8, %switchexit
	ret void
}