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1; RUN: opt < %s -S -passes=loop-rotate -o - -verify-loop-info -verify-dom-info -verify-memoryssa | FileCheck %s2 3; PR55024define void @z80_do_opcodes() nounwind {5entry:6 br label %while.cond7 8while.cond: ; preds = %end_opcode, %entry9 br label %while.body10 11while.body: ; preds = %while.cond12 br label %indirectgoto13 14run_opcode: ; preds = %indirectgoto15 %tmp276 = load i8, ptr undef ; <i8> [#uses=1]16 br label %indirectgoto17 18if.else295: ; preds = %divide_late19 br label %end_opcode20 21end_opcode: ; preds = %indirectgoto, %sw.default42406, %sw.default, %if.else29522 %opcode.2 = phi i8 [ %opcode.0, %indirectgoto ], [ 0, %sw.default42406 ], [ undef, %sw.default ], [ %opcode.0, %if.else295 ] ; <i8> [#uses=0]23 switch i32 undef, label %while.cond [24 i32 221, label %sw.bb1169125 i32 253, label %sw.bb3035126 ]27 28sw.bb11691: ; preds = %end_opcode29 br label %sw.default30 31sw.default: ; preds = %sw.bb1169132 br label %end_opcode33 34sw.bb30351: ; preds = %end_opcode35 br label %sw.default4240636 37sw.default42406: ; preds = %sw.bb3035138 br label %end_opcode39 40indirectgoto: ; preds = %run_opcode, %while.body41 %opcode.0 = phi i8 [ undef, %while.body ], [ %tmp276, %run_opcode ] ; <i8> [#uses=2]42 indirectbr ptr undef, [label %run_opcode, label %if.else295, label %end_opcode]43}44 45; CHECK-LABEL: @foo46define void @foo(i1 %a, i1 %b, ptr %c) {47; CHECK: entry48; CHECK-NEXT: br i1 %a, label %return, label %preheader49entry:50 br i1 %a, label %return, label %preheader51 52; CHECK: preheader:53; CHECK-NEXT: br label %header54preheader:55 br label %header56 57; CHECK: header:58; CHECK-NEXT: br i1 %b, label %return, label %body59header:60 br i1 %b, label %return, label %body61 62; CHECK: body:63; CHECK-NEXT: indirectbr ptr %c, [label %return, label %latch]64body:65 indirectbr ptr %c, [label %return, label %latch]66 67; CHECK: latch:68; CHECK-NEXT: br label %header69latch:70 br label %header71 72return:73 ret void74}75