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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; Previously, it caused compiler crash from verifier.5; The phi node in exit block should be updated properly.6 7define i16 @test_int() {8; CHECK-LABEL: @test_int(9; CHECK-NEXT: entry:10; CHECK-NEXT: br label [[ENTRY_SPLIT:%.*]]11; CHECK: entry.split:12; CHECK-NEXT: br label [[FOR_BODY:%.*]]13; CHECK: for.body:14; CHECK-NEXT: [[I:%.*]] = phi i16 [ 0, [[ENTRY_SPLIT]] ], [ [[ADD:%.*]], [[COND_END:%.*]] ]15; CHECK-NEXT: [[CMP1:%.*]] = icmp ult i16 [[I]], 316; CHECK-NEXT: br i1 true, label [[COND_TRUE:%.*]], label [[COND_FALSE:%.*]]17; CHECK: cond.true:18; CHECK-NEXT: br label [[COND_END]]19; CHECK: cond.false:20; CHECK-NEXT: br label [[COND_END]]21; CHECK: cond.end:22; CHECK-NEXT: [[CALL:%.*]] = call i16 @foo()23; CHECK-NEXT: [[ADD]] = add nuw nsw i16 [[I]], 124; CHECK-NEXT: [[CMP2:%.*]] = icmp ult i16 [[I]], 325; CHECK-NEXT: br i1 [[CMP2]], label [[FOR_BODY]], label [[ENTRY_SPLIT_SPLIT:%.*]]26; CHECK: entry.split.split:27; CHECK-NEXT: [[CALL_LCSSA_LCSSA:%.*]] = phi i16 [ [[CALL]], [[COND_END]] ]28; CHECK-NEXT: [[I_LCSSA:%.*]] = phi i16 [ [[ADD]], [[COND_END]] ]29; CHECK-NEXT: [[TMP0:%.*]] = icmp ne i16 [[I_LCSSA]], 1130; CHECK-NEXT: br i1 [[TMP0]], label [[FOR_BODY_SPLIT_PREHEADER:%.*]], label [[END:%.*]]31; CHECK: for.body.split.preheader:32; CHECK-NEXT: br label [[FOR_BODY_SPLIT:%.*]]33; CHECK: for.body.split:34; CHECK-NEXT: [[I_SPLIT:%.*]] = phi i16 [ [[ADD_SPLIT:%.*]], [[COND_END_SPLIT:%.*]] ], [ [[I_LCSSA]], [[FOR_BODY_SPLIT_PREHEADER]] ]35; CHECK-NEXT: [[CMP1_SPLIT:%.*]] = icmp ult i16 [[I_SPLIT]], 336; CHECK-NEXT: br i1 false, label [[COND_TRUE_SPLIT:%.*]], label [[COND_FALSE_SPLIT:%.*]]37; CHECK: cond.false.split:38; CHECK-NEXT: br label [[COND_END_SPLIT]]39; CHECK: cond.true.split:40; CHECK-NEXT: br label [[COND_END_SPLIT]]41; CHECK: cond.end.split:42; CHECK-NEXT: [[CALL_SPLIT:%.*]] = call i16 @foo()43; CHECK-NEXT: [[ADD_SPLIT]] = add nuw nsw i16 [[I_SPLIT]], 144; CHECK-NEXT: [[CMP2_SPLIT:%.*]] = icmp ult i16 [[I_SPLIT]], 1145; CHECK-NEXT: br i1 [[CMP2_SPLIT]], label [[FOR_BODY_SPLIT]], label [[END_LOOPEXIT:%.*]]46; CHECK: end.loopexit:47; CHECK-NEXT: [[CALL_LCSSA_PH:%.*]] = phi i16 [ [[CALL_SPLIT]], [[COND_END_SPLIT]] ]48; CHECK-NEXT: br label [[END]]49; CHECK: end:50; CHECK-NEXT: [[CALL_LCSSA:%.*]] = phi i16 [ [[CALL_LCSSA_LCSSA]], [[ENTRY_SPLIT_SPLIT]] ], [ [[CALL_LCSSA_PH]], [[END_LOOPEXIT]] ]51; CHECK-NEXT: ret i16 [[CALL_LCSSA]]52;53entry:54 br label %for.body55 56for.body: ; preds = %entry, %cond.end57 %i = phi i16 [ 0, %entry ], [ %add, %cond.end ]58 %cmp1 = icmp ult i16 %i, 359 br i1 %cmp1, label %cond.true, label %cond.false60 61cond.true: ; preds = %for.body62 br label %cond.end63 64cond.false: ; preds = %for.body65 br label %cond.end66 67cond.end: ; preds = %cond.false, %cond.true68 %call = call i16 @foo()69 %add = add nuw nsw i16 %i, 170 %cmp2 = icmp ult i16 %i, 1171 br i1 %cmp2, label %for.body, label %end72 73end: ; preds = %cond.end74 ret i16 %call75}76 77declare i16 @foo()78