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@B = external global [10 x i16], align 1 5 6define void @test() { 7; CHECK-LABEL: @test( 8; CHECK-NEXT: entry: 9; CHECK-NEXT: br label [[ENTRY_SPLIT:%.*]] 10; CHECK: entry.split: 11; CHECK-NEXT: br label [[FOR_COND:%.*]] 12; CHECK: for.cond: 13; CHECK-NEXT: [[I_0:%.*]] = phi i16 [ 0, [[ENTRY_SPLIT]] ], [ [[INC_0:%.*]], [[FOR_INC:%.*]] ] 14; CHECK-NEXT: [[I_1:%.*]] = phi i16 [ 10, [[ENTRY_SPLIT]] ], [ [[INC_0]], [[FOR_INC]] ] 15; CHECK-NEXT: [[I_2:%.*]] = phi i16 [ 10, [[ENTRY_SPLIT]] ], [ [[INC_2:%.*]], [[FOR_INC]] ] 16; CHECK-NEXT: [[I_3:%.*]] = phi i16 [ 15, [[ENTRY_SPLIT]] ], [ 30, [[FOR_INC]] ] 17; CHECK-NEXT: [[EXITCOND_NOT:%.*]] = icmp eq i16 [[I_0]], 5 18; CHECK-NEXT: br i1 [[EXITCOND_NOT]], label [[ENTRY_SPLIT_SPLIT:%.*]], label [[FOR_BODY:%.*]] 19; CHECK: for.body: 20; CHECK-NEXT: [[CMP1:%.*]] = icmp ult i16 [[I_0]], 5 21; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds [10 x i16], ptr @B, i16 0, i16 [[I_0]] 22; CHECK-NEXT: [[TMP0:%.*]] = load i16, ptr [[ARRAYIDX]], align 1 23; CHECK-NEXT: br i1 true, label [[IF_THEN:%.*]], label [[IF_ELSE:%.*]] 24; CHECK: if.then: 25; CHECK-NEXT: call void @foo(i16 [[TMP0]], i16 [[I_3]]) 26; CHECK-NEXT: br label [[FOR_INC]] 27; CHECK: if.else: 28; CHECK-NEXT: call void @bar(i16 [[TMP0]], i16 [[I_3]]) 29; CHECK-NEXT: br label [[FOR_INC]] 30; CHECK: for.inc: 31; CHECK-NEXT: [[INC_0]] = add nuw nsw i16 [[I_0]], 1 32; CHECK-NEXT: [[INC_2]] = add nuw nsw i16 [[I_2]], 2 33; CHECK-NEXT: br label [[FOR_COND]] 34; CHECK: entry.split.split: 35; CHECK-NEXT: [[I_0_LCSSA:%.*]] = phi i16 [ [[I_0]], [[FOR_COND]] ] 36; CHECK-NEXT: [[I_1_LCSSA:%.*]] = phi i16 [ [[I_1]], [[FOR_COND]] ] 37; CHECK-NEXT: [[I_2_LCSSA:%.*]] = phi i16 [ [[I_2]], [[FOR_COND]] ] 38; CHECK-NEXT: [[I_3_LCSSA:%.*]] = phi i16 [ [[I_3]], [[FOR_COND]] ] 39; CHECK-NEXT: [[TMP1:%.*]] = icmp ne i16 [[I_0_LCSSA]], 10 40; CHECK-NEXT: br i1 [[TMP1]], label [[FOR_COND_SPLIT_PREHEADER:%.*]], label [[FOR_END:%.*]] 41; CHECK: for.cond.split.preheader: 42; CHECK-NEXT: br label [[FOR_COND_SPLIT:%.*]] 43; CHECK: for.cond.split: 44; CHECK-NEXT: [[I_0_SPLIT:%.*]] = phi i16 [ [[INC_0_SPLIT:%.*]], [[FOR_INC_SPLIT:%.*]] ], [ [[I_0_LCSSA]], [[FOR_COND_SPLIT_PREHEADER]] ] 45; CHECK-NEXT: [[I_1_SPLIT:%.*]] = phi i16 [ [[INC_0_SPLIT]], [[FOR_INC_SPLIT]] ], [ [[I_1_LCSSA]], [[FOR_COND_SPLIT_PREHEADER]] ] 46; CHECK-NEXT: [[I_2_SPLIT:%.*]] = phi i16 [ [[INC_2_SPLIT:%.*]], [[FOR_INC_SPLIT]] ], [ [[I_2_LCSSA]], [[FOR_COND_SPLIT_PREHEADER]] ] 47; CHECK-NEXT: [[I_3_SPLIT:%.*]] = phi i16 [ 30, [[FOR_INC_SPLIT]] ], [ [[I_3_LCSSA]], [[FOR_COND_SPLIT_PREHEADER]] ] 48; CHECK-NEXT: [[EXITCOND_NOT_SPLIT:%.*]] = icmp eq i16 [[I_0_SPLIT]], 10 49; CHECK-NEXT: br i1 [[EXITCOND_NOT_SPLIT]], label [[FOR_END_LOOPEXIT:%.*]], label [[FOR_BODY_SPLIT:%.*]] 50; CHECK: for.body.split: 51; CHECK-NEXT: [[CMP1_SPLIT:%.*]] = icmp ult i16 [[I_0_SPLIT]], 5 52; CHECK-NEXT: [[ARRAYIDX_SPLIT:%.*]] = getelementptr inbounds [10 x i16], ptr @B, i16 0, i16 [[I_0_SPLIT]] 53; CHECK-NEXT: [[TMP2:%.*]] = load i16, ptr [[ARRAYIDX_SPLIT]], align 1 54; CHECK-NEXT: br i1 false, label [[IF_THEN_SPLIT:%.*]], label [[IF_ELSE_SPLIT:%.*]] 55; CHECK: if.else.split: 56; CHECK-NEXT: call void @bar(i16 [[TMP2]], i16 [[I_3_SPLIT]]) 57; CHECK-NEXT: br label [[FOR_INC_SPLIT]] 58; CHECK: if.then.split: 59; CHECK-NEXT: call void @foo(i16 [[TMP2]], i16 [[I_3_SPLIT]]) 60; CHECK-NEXT: br label [[FOR_INC_SPLIT]] 61; CHECK: for.inc.split: 62; CHECK-NEXT: [[INC_0_SPLIT]] = add nuw nsw i16 [[I_0_SPLIT]], 1 63; CHECK-NEXT: [[INC_2_SPLIT]] = add nuw nsw i16 [[I_2_SPLIT]], 2 64; CHECK-NEXT: br label [[FOR_COND_SPLIT]] 65; CHECK: for.end.loopexit: 66; CHECK-NEXT: br label [[FOR_END]] 67; CHECK: for.end: 68; CHECK-NEXT: ret void 69; 70entry: 71 br label %for.cond 72 73for.cond: ; preds = %for.inc, %entry 74 %i.0 = phi i16 [ 0, %entry ], [ %inc.0, %for.inc ] 75 %i.1 = phi i16 [ 10, %entry ], [ %inc.0, %for.inc ] 76 %i.2 = phi i16 [ 10, %entry ], [ %inc.2, %for.inc ] 77 %i.3 = phi i16 [ 15, %entry ], [ 30, %for.inc ] 78 %exitcond.not = icmp eq i16 %i.0, 10 79 br i1 %exitcond.not, label %for.end, label %for.body 80 81for.body: ; preds = %for.cond 82 %cmp1 = icmp ult i16 %i.0, 5 83 %arrayidx = getelementptr inbounds [10 x i16], ptr @B, i16 0, i16 %i.0 84 %0 = load i16, ptr %arrayidx, align 1 85 br i1 %cmp1, label %if.then, label %if.else 86 87if.then: ; preds = %for.body 88 call void @foo(i16 %0, i16 %i.3) 89 br label %for.inc 90 91if.else: ; preds = %for.body 92 call void @bar(i16 %0, i16 %i.3) 93 br label %for.inc 94 95for.inc: ; preds = %if.else, %if.then 96 %inc.0 = add nuw nsw i16 %i.0, 1 97 %inc.2 = add nuw nsw i16 %i.2, 2 98 br label %for.cond 99 100for.end: ; preds = %for.cond 101 ret void 102} 103 104declare void @foo(i16, i16) 105declare void @bar(i16, i16) 106