| ; 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 |
| @C = common global [100 x [100 x i32]] zeroinitializer |
| |
| ;; FIXME: |
| ;; Test for interchange when we have an lcssa phi. This should ideally be interchanged but it is currently not supported. |
| ;; for(gi=1;gi<N;gi++) |
| ;; for(gj=1;gj<M;gj++) |
| ;; A[gj][gi] = A[gj - 1][gi] + C[gj][gi]; |
| |
| @gi = common global i32 0 |
| @gj = common global i32 0 |
| |
| define void @interchange_07(i32 %N, i32 %M){ |
| entry: |
| store i32 1, i32* @gi |
| %cmp21 = icmp sgt i32 %N, 1 |
| br i1 %cmp21, label %for.cond1.preheader.lr.ph, label %for.end16 |
| |
| for.cond1.preheader.lr.ph: |
| %cmp218 = icmp sgt i32 %M, 1 |
| %gi.promoted = load i32, i32* @gi |
| %0 = add i32 %M, -1 |
| %1 = sext i32 %gi.promoted to i64 |
| %2 = sext i32 %N to i64 |
| %3 = add i32 %gi.promoted, 1 |
| %4 = icmp slt i32 %3, %N |
| %smax = select i1 %4, i32 %N, i32 %3 |
| br label %for.cond1.preheader |
| |
| for.cond1.preheader: |
| %indvars.iv25 = phi i64 [ %1, %for.cond1.preheader.lr.ph ], [ %indvars.iv.next26, %for.inc14 ] |
| br i1 %cmp218, label %for.body3, label %for.inc14 |
| |
| for.body3: |
| %indvars.iv = phi i64 [ %indvars.iv.next, %for.body3 ], [ 1, %for.cond1.preheader ] |
| %5 = add nsw i64 %indvars.iv, -1 |
| %arrayidx5 = getelementptr inbounds [100 x [100 x i32]], [100 x [100 x i32]]* @A, i64 0, i64 %5, i64 %indvars.iv25 |
| %6 = load i32, i32* %arrayidx5 |
| %arrayidx9 = getelementptr inbounds [100 x [100 x i32]], [100 x [100 x i32]]* @C, i64 0, i64 %indvars.iv, i64 %indvars.iv25 |
| %7 = load i32, i32* %arrayidx9 |
| %add = add nsw i32 %7, %6 |
| %arrayidx13 = getelementptr inbounds [100 x [100 x i32]], [100 x [100 x i32]]* @A, i64 0, i64 %indvars.iv, i64 %indvars.iv25 |
| store i32 %add, i32* %arrayidx13 |
| %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.inc14, label %for.body3 |
| |
| for.inc14: |
| %inc.lcssa23 = phi i32 [ 1, %for.cond1.preheader ], [ %M, %for.body3 ] |
| %indvars.iv.next26 = add nsw i64 %indvars.iv25, 1 |
| %cmp = icmp slt i64 %indvars.iv.next26, %2 |
| br i1 %cmp, label %for.cond1.preheader, label %for.cond.for.end16_crit_edge |
| |
| for.cond.for.end16_crit_edge: |
| store i32 %inc.lcssa23, i32* @gj |
| store i32 %smax, i32* @gi |
| br label %for.end16 |
| |
| for.end16: |
| ret void |
| } |
| |
| ; CHECK-LABEL: @interchange_07 |
| ; CHECK: for.body3: ; preds = %for.body3.preheader, %for.body3 |
| ; CHECK: %indvars.iv = phi i64 [ %indvars.iv.next, %for.body3 ], [ 1, %for.body3.preheader ] |
| ; CHECK: %5 = add nsw i64 %indvars.iv, -1 |
| ; CHECK: %arrayidx5 = getelementptr inbounds [100 x [100 x i32]], [100 x [100 x i32]]* @A, i64 0, i64 %5, i64 %indvars.iv25 |
| ; CHECK: %6 = load i32, i32* %arrayidx5 |
| ; CHECK: %arrayidx9 = getelementptr inbounds [100 x [100 x i32]], [100 x [100 x i32]]* @C, i64 0, i64 %indvars.iv, i64 %indvars.iv25 |