1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py 2; RUN: opt -passes=loop-bound-split -S < %s | FileCheck %s 3 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]], 3 16; 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]], 1 24; CHECK-NEXT: [[CMP2:%.*]] = icmp ult i16 [[I]], 3 25; 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]], 11 30; 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]], 3 36; 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]], 1 44; CHECK-NEXT: [[CMP2_SPLIT:%.*]] = icmp ult i16 [[I_SPLIT]], 11 45; 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.body 55 56for.body: ; preds = %entry, %cond.end 57 %i = phi i16 [ 0, %entry ], [ %add, %cond.end ] 58 %cmp1 = icmp ult i16 %i, 3 59 br i1 %cmp1, label %cond.true, label %cond.false 60 61cond.true: ; preds = %for.body 62 br label %cond.end 63 64cond.false: ; preds = %for.body 65 br label %cond.end 66 67cond.end: ; preds = %cond.false, %cond.true 68 %call = call i16 @foo() 69 %add = add nuw nsw i16 %i, 1 70 %cmp2 = icmp ult i16 %i, 11 71 br i1 %cmp2, label %for.body, label %end 72 73end: ; preds = %cond.end 74 ret i16 %call 75} 76 77declare i16 @foo() 78