| Florian Hahn | 6c7f025 | 2017-07-18 09:47:06 +0000 | [diff] [blame^] | 1 | ; RUN: opt < %s -basicaa -loop-interchange -S | FileCheck %s |
| 2 | ;; We test the complete .ll for adjustment in outer loop header/latch and inner loop header/latch. |
| 3 | |
| 4 | target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" |
| 5 | target triple = "x86_64-unknown-linux-gnu" |
| 6 | |
| 7 | @D = common global [100 x [100 x [100 x i32]]] zeroinitializer |
| 8 | |
| 9 | ;; Test for interchange in loop nest greater than 2. |
| 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 | define void @interchange_08(i32 %t){ |
| 16 | entry: |
| 17 | br label %for.cond1.preheader |
| 18 | |
| 19 | for.cond1.preheader: ; preds = %for.inc15, %entry |
| 20 | %i.028 = phi i32 [ 0, %entry ], [ %inc16, %for.inc15 ] |
| 21 | br label %for.cond4.preheader |
| 22 | |
| 23 | for.cond4.preheader: ; preds = %for.inc12, %for.cond1.preheader |
| 24 | %j.027 = phi i32 [ 0, %for.cond1.preheader ], [ %inc13, %for.inc12 ] |
| 25 | br label %for.body6 |
| 26 | |
| 27 | for.body6: ; preds = %for.body6, %for.cond4.preheader |
| 28 | %k.026 = phi i32 [ 0, %for.cond4.preheader ], [ %inc, %for.body6 ] |
| 29 | %arrayidx8 = getelementptr inbounds [100 x [100 x [100 x i32]]], [100 x [100 x [100 x i32]]]* @D, i32 0, i32 %i.028, i32 %k.026, i32 %j.027 |
| 30 | %0 = load i32, i32* %arrayidx8 |
| 31 | %add = add nsw i32 %0, %t |
| 32 | store i32 %add, i32* %arrayidx8 |
| 33 | %inc = add nuw nsw i32 %k.026, 1 |
| 34 | %exitcond = icmp eq i32 %inc, 100 |
| 35 | br i1 %exitcond, label %for.inc12, label %for.body6 |
| 36 | |
| 37 | for.inc12: ; preds = %for.body6 |
| 38 | %inc13 = add nuw nsw i32 %j.027, 1 |
| 39 | %exitcond29 = icmp eq i32 %inc13, 100 |
| 40 | br i1 %exitcond29, label %for.inc15, label %for.cond4.preheader |
| 41 | |
| 42 | for.inc15: ; preds = %for.inc12 |
| 43 | %inc16 = add nuw nsw i32 %i.028, 1 |
| 44 | %exitcond30 = icmp eq i32 %inc16, 100 |
| 45 | br i1 %exitcond30, label %for.end17, label %for.cond1.preheader |
| 46 | |
| 47 | for.end17: ; preds = %for.inc15 |
| 48 | ret void |
| 49 | } |
| 50 | ; CHECK-LABEL: @interchange_08 |
| 51 | ; CHECK: entry: |
| 52 | ; CHECK: br label %for.cond1.preheader.preheader |
| 53 | ; CHECK: for.cond1.preheader.preheader: ; preds = %entry |
| 54 | ; CHECK: br label %for.cond1.preheader |
| 55 | ; CHECK: for.cond1.preheader: ; preds = %for.cond1.preheader.preheader, %for.inc15 |
| 56 | ; CHECK: %i.028 = phi i32 [ %inc16, %for.inc15 ], [ 0, %for.cond1.preheader.preheader ] |
| 57 | ; CHECK: br label %for.body6.preheader |
| 58 | ; CHECK: for.cond4.preheader.preheader: ; preds = %for.body6 |
| 59 | ; CHECK: br label %for.cond4.preheader |
| 60 | ; CHECK: for.cond4.preheader: ; preds = %for.cond4.preheader.preheader, %for.inc12 |
| 61 | ; CHECK: %j.027 = phi i32 [ %inc13, %for.inc12 ], [ 0, %for.cond4.preheader.preheader ] |
| 62 | ; CHECK: br label %for.body6.split1 |
| 63 | ; CHECK: for.body6.preheader: ; preds = %for.cond1.preheader |
| 64 | ; CHECK: br label %for.body6 |
| 65 | ; CHECK: for.body6: ; preds = %for.body6.preheader, %for.body6.split |
| 66 | ; CHECK: %k.026 = phi i32 [ %inc, %for.body6.split ], [ 0, %for.body6.preheader ] |
| 67 | ; CHECK: br label %for.cond4.preheader.preheader |
| 68 | ; CHECK: for.body6.split1: ; preds = %for.cond4.preheader |
| 69 | ; CHECK: %arrayidx8 = getelementptr inbounds [100 x [100 x [100 x i32]]], [100 x [100 x [100 x i32]]]* @D, i32 0, i32 %i.028, i32 %k.026, i32 %j.027 |
| 70 | ; CHECK: %0 = load i32, i32* %arrayidx8 |
| 71 | ; CHECK: %add = add nsw i32 %0, %t |
| 72 | ; CHECK: store i32 %add, i32* %arrayidx8 |
| 73 | ; CHECK: br label %for.inc12 |
| 74 | ; CHECK: for.body6.split: ; preds = %for.inc12 |
| 75 | ; CHECK: %inc = add nuw nsw i32 %k.026, 1 |
| 76 | ; CHECK: %exitcond = icmp eq i32 %inc, 100 |
| 77 | ; CHECK: br i1 %exitcond, label %for.inc15, label %for.body6 |
| 78 | ; CHECK: for.inc12: ; preds = %for.body6.split1 |
| 79 | ; CHECK: %inc13 = add nuw nsw i32 %j.027, 1 |
| 80 | ; CHECK: %exitcond29 = icmp eq i32 %inc13, 100 |
| 81 | ; CHECK: br i1 %exitcond29, label %for.body6.split, label %for.cond4.preheader |
| 82 | ; CHECK: for.inc15: ; preds = %for.body6.split |
| 83 | ; CHECK: %inc16 = add nuw nsw i32 %i.028, 1 |
| 84 | ; CHECK: %exitcond30 = icmp eq i32 %inc16, 100 |
| 85 | ; CHECK: br i1 %exitcond30, label %for.end17, label %for.cond1.preheader |
| 86 | ; CHECK: for.end17: ; preds = %for.inc15 |
| 87 | ; CHECK: ret void |