1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5 2; RUN: opt < %s -passes=loop-interchange -cache-line-size=64 -verify-dom-info -verify-loop-info -S 2>&1 | FileCheck %s 3 4target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" 5 6@D = common global [100 x [100 x [100 x i32]]] zeroinitializer 7 8; Test for interchange in loop nest greater than 2. 9; 10; for(int i=0;i<100;i++) 11; for(int j=0;j<100;j++) 12; for(int k=0;k<100;k++) 13; D[i][k][j] = D[i][k][j]+t; 14; 15; Loops InnerLoopId = 2 and OuterLoopId = 1 should be interchanged, but not 16; loops InnerLoopId = 1 and OuterLoopId = 0 as that is not profitable. 17; 18define void @interchange_08(i32 %t){ 19; CHECK-LABEL: define void @interchange_08( 20; CHECK-SAME: i32 [[T:%.*]]) { 21; CHECK-NEXT: [[ENTRY:.*]]: 22; CHECK-NEXT: br label %[[FOR_COND1_PREHEADER:.*]] 23; CHECK: [[FOR_COND1_PREHEADER]]: 24; CHECK-NEXT: [[I_028:%.*]] = phi i64 [ 0, %[[ENTRY]] ], [ [[INC16:%.*]], %[[FOR_INC15:.*]] ] 25; CHECK-NEXT: br label %[[FOR_BODY6_PREHEADER:.*]] 26; CHECK: [[FOR_COND4_PREHEADER_PREHEADER:.*]]: 27; CHECK-NEXT: br label %[[FOR_COND4_PREHEADER:.*]] 28; CHECK: [[FOR_COND4_PREHEADER]]: 29; CHECK-NEXT: [[J_027:%.*]] = phi i64 [ [[INC13:%.*]], %[[FOR_INC12:.*]] ], [ 0, %[[FOR_COND4_PREHEADER_PREHEADER]] ] 30; CHECK-NEXT: br label %[[FOR_BODY6_SPLIT1:.*]] 31; CHECK: [[FOR_BODY6_PREHEADER]]: 32; CHECK-NEXT: br label %[[FOR_BODY6:.*]] 33; CHECK: [[FOR_BODY6]]: 34; CHECK-NEXT: [[K_026:%.*]] = phi i64 [ [[TMP1:%.*]], %[[FOR_BODY6_SPLIT:.*]] ], [ 0, %[[FOR_BODY6_PREHEADER]] ] 35; CHECK-NEXT: br label %[[FOR_COND4_PREHEADER_PREHEADER]] 36; CHECK: [[FOR_BODY6_SPLIT1]]: 37; CHECK-NEXT: [[ARRAYIDX8:%.*]] = getelementptr inbounds [100 x [100 x [100 x i32]]], ptr @D, i32 0, i64 [[I_028]], i64 [[K_026]], i64 [[J_027]] 38; CHECK-NEXT: [[TMP0:%.*]] = load i32, ptr [[ARRAYIDX8]], align 4 39; CHECK-NEXT: [[ADD:%.*]] = add nsw i32 [[TMP0]], [[T]] 40; CHECK-NEXT: store i32 [[ADD]], ptr [[ARRAYIDX8]], align 4 41; CHECK-NEXT: [[INC:%.*]] = add nuw nsw i64 [[K_026]], 1 42; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i64 [[INC]], 100 43; CHECK-NEXT: br label %[[FOR_INC12]] 44; CHECK: [[FOR_BODY6_SPLIT]]: 45; CHECK-NEXT: [[TMP1]] = add nuw nsw i64 [[K_026]], 1 46; CHECK-NEXT: [[TMP2:%.*]] = icmp eq i64 [[TMP1]], 100 47; CHECK-NEXT: br i1 [[TMP2]], label %[[FOR_INC15]], label %[[FOR_BODY6]] 48; CHECK: [[FOR_INC12]]: 49; CHECK-NEXT: [[INC13]] = add nuw nsw i64 [[J_027]], 1 50; CHECK-NEXT: [[EXITCOND29:%.*]] = icmp eq i64 [[INC13]], 100 51; CHECK-NEXT: br i1 [[EXITCOND29]], label %[[FOR_BODY6_SPLIT]], label %[[FOR_COND4_PREHEADER]] 52; CHECK: [[FOR_INC15]]: 53; CHECK-NEXT: [[INC16]] = add nuw nsw i64 [[I_028]], 1 54; CHECK-NEXT: [[EXITCOND30:%.*]] = icmp eq i64 [[INC16]], 100 55; CHECK-NEXT: br i1 [[EXITCOND30]], label %[[FOR_END17:.*]], label %[[FOR_COND1_PREHEADER]] 56; CHECK: [[FOR_END17]]: 57; CHECK-NEXT: ret void 58; 59entry: 60 br label %for.cond1.preheader 61 62for.cond1.preheader: ; preds = %for.inc15, %entry 63 %i.028 = phi i64 [ 0, %entry ], [ %inc16, %for.inc15 ] 64 br label %for.cond4.preheader 65 66for.cond4.preheader: ; preds = %for.inc12, %for.cond1.preheader 67 %j.027 = phi i64 [ 0, %for.cond1.preheader ], [ %inc13, %for.inc12 ] 68 br label %for.body6 69 70for.body6: ; preds = %for.body6, %for.cond4.preheader 71 %k.026 = phi i64 [ 0, %for.cond4.preheader ], [ %inc, %for.body6 ] 72 %arrayidx8 = getelementptr inbounds [100 x [100 x [100 x i32]]], ptr @D, i32 0, i64 %i.028, i64 %k.026, i64 %j.027 73 %0 = load i32, ptr %arrayidx8 74 %add = add nsw i32 %0, %t 75 store i32 %add, ptr %arrayidx8 76 %inc = add nuw nsw i64 %k.026, 1 77 %exitcond = icmp eq i64 %inc, 100 78 br i1 %exitcond, label %for.inc12, label %for.body6 79 80for.inc12: ; preds = %for.body6 81 %inc13 = add nuw nsw i64 %j.027, 1 82 %exitcond29 = icmp eq i64 %inc13, 100 83 br i1 %exitcond29, label %for.inc15, label %for.cond4.preheader 84 85for.inc15: ; preds = %for.inc12 86 %inc16 = add nuw nsw i64 %i.028, 1 87 %exitcond30 = icmp eq i64 %inc16, 100 88 br i1 %exitcond30, label %for.end17, label %for.cond1.preheader 89 90for.end17: ; preds = %for.inc15 91 ret void 92} 93