| ; RUN: opt < %s -basic-aa -loop-interchange -pass-remarks-missed='loop-interchange' -pass-remarks-output=%t -S \ |
| ; RUN: -verify-dom-info -verify-loop-info -verify-loop-lcssa 2>&1 | FileCheck -check-prefix=IR %s |
| ; RUN: FileCheck --input-file=%t %s |
| |
| ; Outer loop only reductions are not supported currently. |
| |
| @A = common global [500 x [500 x i32]] zeroinitializer |
| |
| ;; global X |
| |
| ;; for( int i=1;i<N;i++) { |
| ;; for( int j=1;j<N;j++) |
| ;; ; |
| ;; X+=A[j][i]; |
| ;; } |
| |
| ; CHECK: --- !Missed |
| ; CHECK-NEXT: Pass: loop-interchange |
| ; CHECK-NEXT: Name: UnsupportedPHI |
| ; CHECK-NEXT: Function: reduction_01 |
| |
| ; IR-LABEL: @reduction_01( |
| ; IR-NOT: split |
| |
| define i32 @reduction_01(i32 %N) { |
| entry: |
| br label %outer.header |
| |
| outer.header: ; preds = %for.cond1.for.inc6_crit_edge, %entry |
| %indvars.iv18 = phi i64 [ %indvars.iv.next19, %outer.inc ], [ 1, %entry ] |
| %add15 = phi i32 [ 0, %entry ], [ %add, %outer.inc ] |
| br label %for.body3 |
| |
| for.body3: ; preds = %for.body3, %for.body3.lr.ph |
| %indvars.iv = phi i64 [ 1, %outer.header ], [ %indvars.iv.next, %for.body3 ] |
| %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 |
| %lftr.wideiv = trunc i64 %indvars.iv.next to i32 |
| %exitcond = icmp eq i32 %lftr.wideiv, %N |
| br i1 %exitcond, label %outer.inc, label %for.body3 |
| |
| outer.inc: ; preds = %for.body3 |
| %arrayidx5 = getelementptr inbounds [500 x [500 x i32]], [500 x [500 x i32]]* @A, i64 0, i64 %indvars.iv, i64 %indvars.iv18 |
| %0 = load i32, i32* %arrayidx5 |
| %add = add nsw i32 %add15, %0 |
| %indvars.iv.next19 = add nuw nsw i64 %indvars.iv18, 1 |
| %lftr.wideiv20 = trunc i64 %indvars.iv.next19 to i32 |
| %exitcond21 = icmp eq i32 %lftr.wideiv20, %N |
| br i1 %exitcond21, label %for.end8, label %outer.header |
| |
| for.end8: ; preds = %for.cond1.for.inc6_crit_edge, %entry |
| ret i32 %add |
| } |
