| ; RUN: opt < %s -basicaa -loop-interchange -S | FileCheck %s |
| ;; We test the complete .ll for adjustment in outer loop header/latch and inner loop header/latch. |
| |
| target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-unknown-linux-gnu" |
| |
| @A = common global [100 x [100 x i32]] zeroinitializer |
| @B = common global [100 x i32] zeroinitializer |
| |
| ;; for(int i=0;i<N;i++) |
| ;; for(int j=1;j<N;j++) |
| ;; A[j][i] = A[j][i]+k; |
| |
| define void @interchange_01(i32 %k, i32 %N) { |
| entry: |
| %cmp21 = icmp sgt i32 %N, 0 |
| br i1 %cmp21, label %for.cond1.preheader.lr.ph, label %for.end12 |
| |
| for.cond1.preheader.lr.ph: |
| %cmp219 = icmp sgt i32 %N, 1 |
| %0 = add i32 %N, -1 |
| br label %for.cond1.preheader |
| |
| for.cond1.preheader: |
| %indvars.iv23 = phi i64 [ 0, %for.cond1.preheader.lr.ph ], [ %indvars.iv.next24, %for.inc10 ] |
| br i1 %cmp219, label %for.body3, label %for.inc10 |
| |
| for.body3: |
| %indvars.iv = phi i64 [ %indvars.iv.next, %for.body3 ], [ 1, %for.cond1.preheader ] |
| %arrayidx5 = getelementptr inbounds [100 x [100 x i32]], [100 x [100 x i32]]* @A, i64 0, i64 %indvars.iv, i64 %indvars.iv23 |
| %1 = load i32, i32* %arrayidx5 |
| %add = add nsw i32 %1, %k |
| store i32 %add, i32* %arrayidx5 |
| %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 |
| %lftr.wideiv = trunc i64 %indvars.iv to i32 |
| %exitcond = icmp eq i32 %lftr.wideiv, %0 |
| br i1 %exitcond, label %for.inc10, label %for.body3 |
| |
| for.inc10: |
| %indvars.iv.next24 = add nuw nsw i64 %indvars.iv23, 1 |
| %lftr.wideiv25 = trunc i64 %indvars.iv23 to i32 |
| %exitcond26 = icmp eq i32 %lftr.wideiv25, %0 |
| br i1 %exitcond26, label %for.end12, label %for.cond1.preheader |
| |
| for.end12: |
| ret void |
| } |
| |
| ; CHECK-LABEL: @interchange_01 |
| ; CHECK: entry: |
| ; CHECK: %cmp21 = icmp sgt i32 %N, 0 |
| ; CHECK: br i1 %cmp21, label %for.body3.preheader, label %for.end12 |
| ; CHECK: for.cond1.preheader.lr.ph: |
| ; CHECK: br label %for.cond1.preheader |
| ; CHECK: for.cond1.preheader: |
| ; CHECK: %indvars.iv23 = phi i64 [ 0, %for.cond1.preheader.lr.ph ], [ %indvars.iv.next24, %for.inc10 ] |
| ; CHECK: br i1 %cmp219, label %for.body3.split1, label %for.end12.loopexit |
| ; CHECK: for.body3.preheader: |
| ; CHECK: %cmp219 = icmp sgt i32 %N, 1 |
| ; CHECK: %0 = add i32 %N, -1 |
| ; CHECK: br label %for.body3 |
| ; CHECK: for.body3: |
| ; CHECK: %indvars.iv = phi i64 [ %indvars.iv.next, %for.body3.split ], [ 1, %for.body3.preheader ] |
| ; CHECK: br label %for.cond1.preheader.lr.ph |
| ; CHECK: for.body3.split1: |
| ; CHECK: %arrayidx5 = getelementptr inbounds [100 x [100 x i32]], [100 x [100 x i32]]* @A, i64 0, i64 %indvars.iv, i64 %indvars.iv23 |
| ; CHECK: %1 = load i32, i32* %arrayidx5 |
| ; CHECK: %add = add nsw i32 %1, %k |
| ; CHECK: store i32 %add, i32* %arrayidx5 |
| ; CHECK: br label %for.inc10.loopexit |
| ; CHECK: for.body3.split: |
| ; CHECK: %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 |
| ; CHECK: %lftr.wideiv = trunc i64 %indvars.iv to i32 |
| ; CHECK: %exitcond = icmp eq i32 %lftr.wideiv, %0 |
| ; CHECK: br i1 %exitcond, label %for.end12.loopexit, label %for.body3 |
| ; CHECK: for.inc10.loopexit: |
| ; CHECK: br label %for.inc10 |
| ; CHECK: for.inc10: |
| ; CHECK: %indvars.iv.next24 = add nuw nsw i64 %indvars.iv23, 1 |
| ; CHECK: %lftr.wideiv25 = trunc i64 %indvars.iv23 to i32 |
| ; CHECK: %exitcond26 = icmp eq i32 %lftr.wideiv25, %0 |
| ; CHECK: br i1 %exitcond26, label %for.body3.split, label %for.cond1.preheader |
| ; CHECK: for.end12.loopexit: |
| ; CHECK: br label %for.end12 |
| ; CHECK: for.end12: |
| ; CHECK: ret void |