1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5 2; RUN: opt < %s -passes=loop-interchange -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; for(int i=0;i<100;i++) 10; for(int j=0;j<100;j++) 11; for(int k=0;k<100;k++) 12; D[k][j][i] = D[k][j][i]+t; 13; 14; Loops InnerLoopId = 2 and OuterLoopId = 1 should be interchanged, and then 15; also InnerLoopId = 1 and OuterLoopId = 0. 16; 17define void @interchange_08(i32 %t){ 18; CHECK-LABEL: define void @interchange_08( 19; CHECK-SAME: i32 [[T:%.*]]) { 20; CHECK-NEXT: [[ENTRY:.*:]] 21; CHECK-NEXT: br label %[[FOR_BODY6_PREHEADER:.*]] 22; CHECK: [[FOR_COND1_PREHEADER_PREHEADER:.*]]: 23; CHECK-NEXT: br label %[[FOR_COND1_PREHEADER:.*]] 24; CHECK: [[FOR_COND1_PREHEADER]]: 25; CHECK-NEXT: [[I_028:%.*]] = phi i64 [ [[INC16:%.*]], %[[FOR_INC15:.*]] ], [ 0, %[[FOR_COND1_PREHEADER_PREHEADER]] ] 26; CHECK-NEXT: br label %[[FOR_BODY6_SPLIT1:.*]] 27; CHECK: [[FOR_COND4_PREHEADER_PREHEADER:.*]]: 28; CHECK-NEXT: br label %[[FOR_COND4_PREHEADER:.*]] 29; CHECK: [[FOR_COND4_PREHEADER]]: 30; CHECK-NEXT: [[J_027:%.*]] = phi i64 [ [[TMP3:%.*]], %[[FOR_INC12_SPLIT:.*]] ], [ 0, %[[FOR_COND4_PREHEADER_PREHEADER]] ] 31; CHECK-NEXT: br label %[[FOR_COND1_PREHEADER_PREHEADER]] 32; CHECK: [[FOR_BODY6_PREHEADER]]: 33; CHECK-NEXT: br label %[[FOR_BODY6:.*]] 34; CHECK: [[FOR_BODY6]]: 35; CHECK-NEXT: [[K_026:%.*]] = phi i64 [ [[TMP1:%.*]], %[[FOR_BODY6_SPLIT:.*]] ], [ 0, %[[FOR_BODY6_PREHEADER]] ] 36; CHECK-NEXT: br label %[[FOR_COND4_PREHEADER_PREHEADER]] 37; CHECK: [[FOR_BODY6_SPLIT1]]: 38; CHECK-NEXT: [[ARRAYIDX8:%.*]] = getelementptr inbounds [100 x [100 x [100 x i32]]], ptr @D, i64 0, i64 [[K_026]], i64 [[J_027]], i64 [[I_028]] 39; CHECK-NEXT: [[TMP0:%.*]] = load i32, ptr [[ARRAYIDX8]], align 4 40; CHECK-NEXT: [[ADD:%.*]] = add nsw i32 [[TMP0]], [[T]] 41; CHECK-NEXT: store i32 [[ADD]], ptr [[ARRAYIDX8]], align 4 42; CHECK-NEXT: [[INC:%.*]] = add nuw nsw i64 [[K_026]], 1 43; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i64 [[INC]], 100 44; CHECK-NEXT: br label %[[FOR_INC12:.*]] 45; CHECK: [[FOR_BODY6_SPLIT]]: 46; CHECK-NEXT: [[TMP1]] = add nuw nsw i64 [[K_026]], 1 47; CHECK-NEXT: [[TMP2:%.*]] = icmp eq i64 [[TMP1]], 100 48; CHECK-NEXT: br i1 [[TMP2]], label %[[FOR_END17:.*]], label %[[FOR_BODY6]] 49; CHECK: [[FOR_INC12]]: 50; CHECK-NEXT: [[INC13:%.*]] = add nuw nsw i64 [[J_027]], 1 51; CHECK-NEXT: [[EXITCOND29:%.*]] = icmp eq i64 [[INC13]], 100 52; CHECK-NEXT: br label %[[FOR_INC15]] 53; CHECK: [[FOR_INC12_SPLIT]]: 54; CHECK-NEXT: [[TMP3]] = add nuw nsw i64 [[J_027]], 1 55; CHECK-NEXT: [[TMP4:%.*]] = icmp eq i64 [[TMP3]], 100 56; CHECK-NEXT: br i1 [[TMP4]], label %[[FOR_BODY6_SPLIT]], label %[[FOR_COND4_PREHEADER]] 57; CHECK: [[FOR_INC15]]: 58; CHECK-NEXT: [[INC16]] = add nuw nsw i64 [[I_028]], 1 59; CHECK-NEXT: [[EXITCOND30:%.*]] = icmp eq i64 [[INC16]], 100 60; CHECK-NEXT: br i1 [[EXITCOND30]], label %[[FOR_INC12_SPLIT]], label %[[FOR_COND1_PREHEADER]] 61; CHECK: [[FOR_END17]]: 62; CHECK-NEXT: ret void 63; 64entry: 65 br label %for.cond1.preheader 66 67for.cond1.preheader: ; preds = %for.inc15, %entry 68 %i.028 = phi i64 [ 0, %entry ], [ %inc16, %for.inc15 ] 69 br label %for.cond4.preheader 70 71for.cond4.preheader: ; preds = %for.inc12, %for.cond1.preheader 72 %j.027 = phi i64 [ 0, %for.cond1.preheader ], [ %inc13, %for.inc12 ] 73 br label %for.body6 74 75for.body6: ; preds = %for.body6, %for.cond4.preheader 76 %k.026 = phi i64 [ 0, %for.cond4.preheader ], [ %inc, %for.body6 ] 77 %arrayidx8 = getelementptr inbounds [100 x [100 x [100 x i32]]], ptr @D, i64 0, i64 %k.026, i64 %j.027, i64 %i.028 78 %0 = load i32, ptr %arrayidx8 79 %add = add nsw i32 %0, %t 80 store i32 %add, ptr %arrayidx8 81 %inc = add nuw nsw i64 %k.026, 1 82 %exitcond = icmp eq i64 %inc, 100 83 br i1 %exitcond, label %for.inc12, label %for.body6 84 85for.inc12: ; preds = %for.body6 86 %inc13 = add nuw nsw i64 %j.027, 1 87 %exitcond29 = icmp eq i64 %inc13, 100 88 br i1 %exitcond29, label %for.inc15, label %for.cond4.preheader 89 90for.inc15: ; preds = %for.inc12 91 %inc16 = add nuw nsw i64 %i.028, 1 92 %exitcond30 = icmp eq i64 %inc16, 100 93 br i1 %exitcond30, label %for.end17, label %for.cond1.preheader 94 95for.end17: ; preds = %for.inc15 96 ret void 97} 98