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test/Transforms/LoopInterchange/currentLimitation.ll
| Show All 10 Lines | |||||
| ;;--------------------------------------Test case 01------------------------------------ | ;;--------------------------------------Test case 01------------------------------------ | ||||
| ;; [FIXME] This loop though valid is currently not interchanged due to the limitation that we cannot split the inner loop latch due to multiple use of inner induction | ;; [FIXME] This loop though valid is currently not interchanged due to the limitation that we cannot split the inner loop latch due to multiple use of inner induction | ||||
| ;; variable.(used to increment the loop counter and to access A[j+1][i+1] | ;; variable.(used to increment the loop counter and to access A[j+1][i+1] | ||||
| ;; for(int i=0;i<N-1;i++) | ;; for(int i=0;i<N-1;i++) | ||||
| ;; for(int j=1;j<N-1;j++) | ;; for(int j=1;j<N-1;j++) | ||||
| ;; A[j+1][i+1] = A[j+1][i+1] + k; | ;; A[j+1][i+1] = A[j+1][i+1] + k; | ||||
| ; FIXME: Currently fails because of DA changes. | |||||
| ; IR-LABEL: @interchange_01 | ; IR-LABEL: @interchange_01 | ||||
| ; IR-NOT: split | ; IR-NOT: split | ||||
| ; CHECK: Name: Dependence | ; CHECK: Name: UnsupportedInsBetweenInduction | ||||
| ; CHECK-NEXT: Function: interchange_01 | ; CHECK-NEXT: Function: interchange_01 | ||||
| define void @interchange_01(i32 %k, i32 %N) { | define void @interchange_01(i32 %k, i32 %N) { | ||||
| entry: | entry: | ||||
| %sub = add nsw i32 %N, -1 | %sub = add nsw i32 %N, -1 | ||||
| %cmp26 = icmp sgt i32 %N, 1 | %cmp26 = icmp sgt i32 %N, 1 | ||||
| br i1 %cmp26, label %for.cond1.preheader.lr.ph, label %for.end17 | br i1 %cmp26, label %for.cond1.preheader.lr.ph, label %for.end17 | ||||
| for.cond1.preheader.lr.ph: | for.cond1.preheader.lr.ph: | ||||
| %cmp324 = icmp sgt i32 %sub, 1 | %cmp324 = icmp sgt i32 %sub, 1 | ||||
| %0 = add i32 %N, -2 | %0 = add i32 %N, -2 | ||||
| %1 = sext i32 %sub to i64 | %1 = sext i32 %sub to i64 | ||||
| br label %for.cond1.preheader | br label %for.cond1.preheader | ||||
| for.cond.loopexit: | for.cond.loopexit: | ||||
| %cmp = icmp slt i64 %indvars.iv.next29, %1 | %cmp = icmp slt i64 %indvars.iv.next29, %1 | ||||
| br i1 %cmp, label %for.cond1.preheader, label %for.end17 | br i1 %cmp, label %for.cond1.preheader, label %for.end17 | ||||
| for.cond1.preheader: | for.cond1.preheader: | ||||
| %indvars.iv28 = phi i64 [ 0, %for.cond1.preheader.lr.ph ], [ %indvars.iv.next29, %for.cond.loopexit ] | %indvars.iv28 = phi i64 [ 0, %for.cond1.preheader.lr.ph ], [ %indvars.iv.next29, %for.cond.loopexit ] | ||||
| %indvars.iv.next29 = add nuw nsw i64 %indvars.iv28, 1 | %indvars.iv.next29 = add nuw nsw i64 %indvars.iv28, 1 | ||||
| br i1 %cmp324, label %for.body4, label %for.cond.loopexit | br i1 %cmp324, label %for.body4, label %for.cond.loopexit | ||||
| for.body4: | for.body4: | ||||
| %indvars.iv = phi i64 [ %indvars.iv.next, %for.body4 ], [ 1, %for.cond1.preheader ] | %indvars.iv = phi i64 [ %indvars.iv.next, %for.body4 ], [ 1, %for.cond1.preheader ] | ||||
| %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 | %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 | ||||
| %arrayidx7 = getelementptr inbounds [100 x [100 x i32]], [100 x [100 x i32]]* @A, i64 0, i64 %indvars.iv.next, i64 %indvars.iv.next29 | %arrayidx7 = getelementptr inbounds [100 x [100 x i32]], [100 x [100 x i32]]* @A, i64 0, i64 %indvars.iv.next, i64 %indvars.iv.next29 | ||||
| %2 = load i32, i32* %arrayidx7 | %2 = load i32, i32* %arrayidx7 | ||||
| %add8 = add nsw i32 %2, %k | %add8 = add nsw i32 %2, %k | ||||
| store i32 %add8, i32* %arrayidx7 | store i32 %add8, i32* %arrayidx7 | ||||
| %lftr.wideiv = trunc i64 %indvars.iv to i32 | %lftr.wideiv = trunc i64 %indvars.iv to i32 | ||||
| %exitcond = icmp eq i32 %lftr.wideiv, %0 | %exitcond = icmp eq i32 %lftr.wideiv, %0 | ||||
| br i1 %exitcond, label %for.cond.loopexit, label %for.body4 | br i1 %exitcond, label %for.cond.loopexit, label %for.body4 | ||||
| for.end17: | for.end17: | ||||
| ret void | ret void | ||||
| } | } | ||||
| ; When currently cannot interchange this loop, because transform currently | ; When currently cannot interchange this loop, because transform currently | ||||
| ; expects the latches to be the exiting blocks too. | ; expects the latches to be the exiting blocks too. | ||||
| ; IR-LABEL: @interchange_02 | ; IR-LABEL: @interchange_02 | ||||
| ; IR-NOT: split | ; IR-NOT: split | ||||
| Show All 31 Lines | |||||