|  | ; RUN: opt < %s -loop-extract -disable-output | 
|  |  | 
|  | declare i32 @_IO_getc() | 
|  |  | 
|  | declare void @__errno_location() | 
|  |  | 
|  | define void @yylex() personality i32 (...)* @__gcc_personality_v0 { | 
|  | entry: | 
|  | switch i32 0, label %label.126 [ | 
|  | i32 0, label %return | 
|  | i32 61, label %combine | 
|  | i32 33, label %combine | 
|  | i32 94, label %combine | 
|  | i32 37, label %combine | 
|  | i32 47, label %combine | 
|  | i32 42, label %combine | 
|  | i32 62, label %combine | 
|  | i32 60, label %combine | 
|  | i32 58, label %combine | 
|  | i32 124, label %combine | 
|  | i32 38, label %combine | 
|  | i32 45, label %combine | 
|  | i32 43, label %combine | 
|  | i32 34, label %string_constant | 
|  | i32 39, label %char_constant | 
|  | i32 46, label %loopexit.2 | 
|  | i32 57, label %loopexit.2 | 
|  | i32 56, label %loopexit.2 | 
|  | i32 55, label %loopexit.2 | 
|  | i32 54, label %loopexit.2 | 
|  | i32 53, label %loopexit.2 | 
|  | i32 52, label %loopexit.2 | 
|  | i32 51, label %loopexit.2 | 
|  | i32 50, label %loopexit.2 | 
|  | i32 49, label %loopexit.2 | 
|  | i32 48, label %loopexit.2 | 
|  | i32 95, label %letter | 
|  | i32 122, label %letter | 
|  | i32 121, label %letter | 
|  | i32 120, label %letter | 
|  | i32 119, label %letter | 
|  | i32 118, label %letter | 
|  | i32 117, label %letter | 
|  | i32 116, label %letter | 
|  | i32 115, label %letter | 
|  | i32 114, label %letter | 
|  | i32 113, label %letter | 
|  | i32 112, label %letter | 
|  | i32 111, label %letter | 
|  | i32 110, label %letter | 
|  | i32 109, label %letter | 
|  | i32 108, label %letter | 
|  | i32 107, label %letter | 
|  | i32 106, label %letter | 
|  | i32 105, label %letter | 
|  | i32 104, label %letter | 
|  | i32 103, label %letter | 
|  | i32 102, label %letter | 
|  | i32 101, label %letter | 
|  | i32 100, label %letter | 
|  | i32 99, label %letter | 
|  | i32 98, label %letter | 
|  | i32 97, label %letter | 
|  | i32 90, label %letter | 
|  | i32 89, label %letter | 
|  | i32 88, label %letter | 
|  | i32 87, label %letter | 
|  | i32 86, label %letter | 
|  | i32 85, label %letter | 
|  | i32 84, label %letter | 
|  | i32 83, label %letter | 
|  | i32 82, label %letter | 
|  | i32 81, label %letter | 
|  | i32 80, label %letter | 
|  | i32 79, label %letter | 
|  | i32 78, label %letter | 
|  | i32 77, label %letter | 
|  | i32 75, label %letter | 
|  | i32 74, label %letter | 
|  | i32 73, label %letter | 
|  | i32 72, label %letter | 
|  | i32 71, label %letter | 
|  | i32 70, label %letter | 
|  | i32 69, label %letter | 
|  | i32 68, label %letter | 
|  | i32 67, label %letter | 
|  | i32 66, label %letter | 
|  | i32 65, label %letter | 
|  | i32 64, label %label.13 | 
|  | i32 76, label %label.12 | 
|  | i32 36, label %label.11 | 
|  | i32 -1, label %label.10 | 
|  | ] | 
|  |  | 
|  | label.10:		; preds = %entry | 
|  | ret void | 
|  |  | 
|  | label.11:		; preds = %entry | 
|  | ret void | 
|  |  | 
|  | label.12:		; preds = %entry | 
|  | ret void | 
|  |  | 
|  | label.13:		; preds = %entry | 
|  | ret void | 
|  |  | 
|  | letter:		; preds = %entry, %entry, %entry, %entry, %entry, %entry, %entry, %entry, %entry, %entry, %entry, %entry, %entry, %entry, %entry, %entry, %entry, %entry, %entry, %entry, %entry, %entry, %entry, %entry, %entry, %entry, %entry, %entry, %entry, %entry, %entry, %entry, %entry, %entry, %entry, %entry, %entry, %entry, %entry, %entry, %entry, %entry, %entry, %entry, %entry, %entry, %entry, %entry, %entry, %entry, %entry, %entry | 
|  | ret void | 
|  |  | 
|  | loopexit.2:		; preds = %entry, %entry, %entry, %entry, %entry, %entry, %entry, %entry, %entry, %entry, %entry | 
|  | switch i32 0, label %shortcirc_next.14 [ | 
|  | i32 48, label %then.20 | 
|  | i32 46, label %endif.38 | 
|  | ] | 
|  |  | 
|  | then.20:		; preds = %loopexit.2 | 
|  | switch i32 0, label %else.4 [ | 
|  | i32 120, label %then.21 | 
|  | i32 88, label %then.21 | 
|  | ] | 
|  |  | 
|  | then.21:		; preds = %then.20, %then.20 | 
|  | ret void | 
|  |  | 
|  | else.4:		; preds = %then.20 | 
|  | ret void | 
|  |  | 
|  | shortcirc_next.14:		; preds = %loopexit.2 | 
|  | ret void | 
|  |  | 
|  | endif.38:		; preds = %loopexit.2 | 
|  | br i1 false, label %then.40, label %then.39 | 
|  |  | 
|  | then.39:		; preds = %endif.38 | 
|  | ret void | 
|  |  | 
|  | then.40:		; preds = %endif.38 | 
|  | invoke void @__errno_location( ) | 
|  | to label %switchexit.2 unwind label %LongJmpBlkPre | 
|  |  | 
|  | loopentry.6:		; preds = %endif.52 | 
|  | switch i32 0, label %switchexit.2 [ | 
|  | i32 73, label %label.82 | 
|  | i32 105, label %label.82 | 
|  | i32 76, label %label.80 | 
|  | i32 108, label %label.80 | 
|  | i32 70, label %label.78 | 
|  | i32 102, label %label.78 | 
|  | ] | 
|  |  | 
|  | label.78:		; preds = %loopentry.6, %loopentry.6 | 
|  | ret void | 
|  |  | 
|  | label.80:		; preds = %loopentry.6, %loopentry.6 | 
|  | ret void | 
|  |  | 
|  | label.82:		; preds = %loopentry.6, %loopentry.6 | 
|  | %c.0.15.5 = phi i32 [ %tmp.79417, %loopentry.6 ], [ %tmp.79417, %loopentry.6 ]		; <i32> [#uses=0] | 
|  | ret void | 
|  |  | 
|  | switchexit.2:		; preds = %loopentry.6, %then.40 | 
|  | br i1 false, label %endif.51, label %loopexit.6 | 
|  |  | 
|  | endif.51:		; preds = %switchexit.2 | 
|  | br i1 false, label %endif.52, label %then.52 | 
|  |  | 
|  | then.52:		; preds = %endif.51 | 
|  | ret void | 
|  |  | 
|  | endif.52:		; preds = %endif.51 | 
|  | %tmp.79417 = invoke i32 @_IO_getc( ) | 
|  | to label %loopentry.6 unwind label %LongJmpBlkPre		; <i32> [#uses=2] | 
|  |  | 
|  | loopexit.6:		; preds = %switchexit.2 | 
|  | ret void | 
|  |  | 
|  | char_constant:		; preds = %entry | 
|  | ret void | 
|  |  | 
|  | string_constant:		; preds = %entry | 
|  | ret void | 
|  |  | 
|  | combine:		; preds = %entry, %entry, %entry, %entry, %entry, %entry, %entry, %entry, %entry, %entry, %entry, %entry, %entry | 
|  | ret void | 
|  |  | 
|  | label.126:		; preds = %entry | 
|  | ret void | 
|  |  | 
|  | return:		; preds = %entry | 
|  | ret void | 
|  |  | 
|  | LongJmpBlkPre:		; preds = %endif.52, %then.40 | 
|  | %exn = landingpad { i8*, i32 } | 
|  | catch i8* null | 
|  | ret void | 
|  | } | 
|  |  | 
|  | declare i32 @__gcc_personality_v0(...) |