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1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py2; RUN: opt -passes=loop-bound-split -S < %s | FileCheck %s3 4; LoopBoundSplit pass should fail to split this test's loop because the split5; condition is false in first iteration of the loop.6 7define i16 @main(i16 %qqq) {8; CHECK-LABEL: @main(9; CHECK-NEXT: entry:10; CHECK-NEXT: br label [[FOR_BODY:%.*]]11; CHECK: for.body:12; CHECK-NEXT: [[T0:%.*]] = phi i16 [ 0, [[ENTRY:%.*]] ], [ [[T8:%.*]], [[CONT19:%.*]] ]13; CHECK-NEXT: [[T1:%.*]] = shl nuw nsw i16 [[T0]], 114; CHECK-NEXT: [[T2:%.*]] = add i16 [[T1]], [[QQQ:%.*]]15; CHECK-NEXT: [[DOTNOT9:%.*]] = icmp ult i16 [[T2]], [[QQQ]]16; CHECK-NEXT: br i1 [[DOTNOT9]], label [[HANDLER_POINTER_OVERFLOW:%.*]], label [[CONT15_CRITEDGE:%.*]]17; CHECK: handler.pointer_overflow:18; CHECK-NEXT: call void @__ubsan_handle_pointer_overflow()19; CHECK-NEXT: br label [[CONT19]]20; CHECK: cont15.critedge:21; CHECK-NEXT: br label [[CONT19]]22; CHECK: cont19:23; CHECK-NEXT: [[T8]] = add nuw nsw i16 [[T0]], 124; CHECK-NEXT: [[EXITCOND_NOT:%.*]] = icmp eq i16 [[T8]], 325; CHECK-NEXT: br i1 [[EXITCOND_NOT]], label [[FOR_COND_CLEANUP:%.*]], label [[FOR_BODY]]26; CHECK: for.cond.cleanup:27; CHECK-NEXT: ret i16 028;29entry:30 br label %for.body31 32for.body:33 %t0 = phi i16 [ 0, %entry ], [ %t8, %cont19 ]34 %t1 = shl nuw nsw i16 %t0, 135 %t2 = add i16 %t1, %qqq36 %.not9 = icmp ult i16 %t2, %qqq37 br i1 %.not9, label %handler.pointer_overflow, label %cont15.critedge38 39handler.pointer_overflow:40 call void @__ubsan_handle_pointer_overflow()41 br label %cont1942 43cont15.critedge:44 br label %cont1945 46cont19:47 %t8 = add nuw nsw i16 %t0, 148 %exitcond.not = icmp eq i16 %t8, 349 br i1 %exitcond.not, label %for.cond.cleanup, label %for.body50 51for.cond.cleanup:52 ret i16 053}54 55declare dso_local void @__ubsan_handle_pointer_overflow()56