| 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 | @A = common global [100 x [100 x i32]] zeroinitializer |
| 8 | @B = common global [100 x i32] zeroinitializer |
| 9 | |
| 10 | ;; Loops should not be interchanged in this case as it is not legal due to dependency. |
| 11 | ;; for(int j=0;j<99;j++) |
| 12 | ;; for(int i=0;i<99;i++) |
| 13 | ;; A[j][i+1] = A[j+1][i]+k; |
| 14 | |
| 15 | define void @interchange_04(i32 %k){ |
| 16 | entry: |
| 17 | br label %for.cond1.preheader |
| 18 | |
| 19 | for.cond1.preheader: |
| 20 | %indvars.iv23 = phi i64 [ 0, %entry ], [ %indvars.iv.next24, %for.inc12 ] |
| 21 | %indvars.iv.next24 = add nuw nsw i64 %indvars.iv23, 1 |
| 22 | br label %for.body3 |
| 23 | |
| 24 | for.body3: |
| 25 | %indvars.iv = phi i64 [ 0, %for.cond1.preheader ], [ %indvars.iv.next, %for.body3 ] |
| 26 | %arrayidx5 = getelementptr inbounds [100 x [100 x i32]], [100 x [100 x i32]]* @A, i64 0, i64 %indvars.iv.next24, i64 %indvars.iv |
| 27 | %0 = load i32, i32* %arrayidx5 |
| 28 | %add6 = add nsw i32 %0, %k |
| 29 | %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 |
| 30 | %arrayidx11 = getelementptr inbounds [100 x [100 x i32]], [100 x [100 x i32]]* @A, i64 0, i64 %indvars.iv23, i64 %indvars.iv.next |
| 31 | store i32 %add6, i32* %arrayidx11 |
| 32 | %exitcond = icmp eq i64 %indvars.iv.next, 99 |
| 33 | br i1 %exitcond, label %for.inc12, label %for.body3 |
| 34 | |
| 35 | for.inc12: |
| 36 | %exitcond25 = icmp eq i64 %indvars.iv.next24, 99 |
| 37 | br i1 %exitcond25, label %for.end14, label %for.cond1.preheader |
| 38 | |
| 39 | for.end14: |
| 40 | ret void |
| 41 | } |
| 42 | |
| 43 | ; CHECK-LABEL: @interchange_04 |
| 44 | ; CHECK: entry: |
| 45 | ; CHECK: br label %for.cond1.preheader |
| 46 | ; CHECK: for.cond1.preheader: ; preds = %for.inc12, %entry |
| 47 | ; CHECK: %indvars.iv23 = phi i64 [ 0, %entry ], [ %indvars.iv.next24, %for.inc12 ] |
| 48 | ; CHECK: %indvars.iv.next24 = add nuw nsw i64 %indvars.iv23, 1 |
| 49 | ; CHECK: br label %for.body3 |
| 50 | ; CHECK: for.body3: ; preds = %for.body3, %for.cond1.preheader |
| 51 | ; CHECK: %indvars.iv = phi i64 [ 0, %for.cond1.preheader ], [ %indvars.iv.next, %for.body3 ] |
| 52 | ; CHECK: %arrayidx5 = getelementptr inbounds [100 x [100 x i32]], [100 x [100 x i32]]* @A, i64 0, i64 %indvars.iv.next24, i64 %indvars.iv |
| 53 | ; CHECK: %0 = load i32, i32* %arrayidx5 |
| 54 | ; CHECK: %add6 = add nsw i32 %0, %k |
| 55 | ; CHECK: %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 |
| 56 | ; CHECK: %arrayidx11 = getelementptr inbounds [100 x [100 x i32]], [100 x [100 x i32]]* @A, i64 0, i64 %indvars.iv23, i64 %indvars.iv.next |
| 57 | ; CHECK: store i32 %add6, i32* %arrayidx11 |
| 58 | ; CHECK: %exitcond = icmp eq i64 %indvars.iv.next, 99 |
| 59 | ; CHECK: br i1 %exitcond, label %for.inc12, label %for.body3 |
| 60 | ; CHECK: for.inc12: ; preds = %for.body3 |
| 61 | ; CHECK: %exitcond25 = icmp eq i64 %indvars.iv.next24, 99 |
| 62 | ; CHECK: br i1 %exitcond25, label %for.end14, label %for.cond1.preheader |
| 63 | ; CHECK: for.end14: ; preds = %for.inc12 |
| 64 | ; CHECK: ret void |