| ; RUN: opt < %s -loop-accesses -analyze | FileCheck -check-prefix=OLDPM %s |
| ; RUN: opt -passes='require<scalar-evolution>,require<aa>,loop(print-access-info)' -disable-output < %s 2>&1 | FileCheck -check-prefix=NEWPM %s |
| |
| ; Test to confirm LAA will find multiple stores to an invariant address in the |
| ; inner loop. |
| ; |
| ; for(; i < itr; i++) { |
| ; for(; j < itr; j++) { |
| ; var1[i] = var2[j] + var1[i]; |
| ; var1[i]++; |
| ; } |
| ; } |
| |
| ; The LAA with the new PM is a loop pass so we go from inner to outer loops. |
| |
| ; OLDPM: for.cond1.preheader: |
| ; OLDPM: Non vectorizable stores to invariant address were not found in loop. |
| ; OLDPM: for.body3: |
| ; OLDPM: Non vectorizable stores to invariant address were found in loop. |
| |
| ; NEWPM: for.body3: |
| ; NEWPM: Non vectorizable stores to invariant address were found in loop. |
| ; NEWPM: for.cond1.preheader: |
| ; NEWPM: Non vectorizable stores to invariant address were not found in loop. |
| |
| define i32 @foo(i32* nocapture %var1, i32* nocapture readonly %var2, i32 %itr) #0 { |
| entry: |
| %cmp20 = icmp eq i32 %itr, 0 |
| br i1 %cmp20, label %for.end10, label %for.cond1.preheader |
| |
| for.cond1.preheader: ; preds = %entry, %for.inc8 |
| %indvars.iv23 = phi i64 [ %indvars.iv.next24, %for.inc8 ], [ 0, %entry ] |
| %j.022 = phi i32 [ %j.1.lcssa, %for.inc8 ], [ 0, %entry ] |
| %cmp218 = icmp ult i32 %j.022, %itr |
| br i1 %cmp218, label %for.body3.lr.ph, label %for.inc8 |
| |
| for.body3.lr.ph: ; preds = %for.cond1.preheader |
| %arrayidx5 = getelementptr inbounds i32, i32* %var1, i64 %indvars.iv23 |
| %0 = zext i32 %j.022 to i64 |
| br label %for.body3 |
| |
| for.body3: ; preds = %for.body3, %for.body3.lr.ph |
| %indvars.iv = phi i64 [ %0, %for.body3.lr.ph ], [ %indvars.iv.next, %for.body3 ] |
| %arrayidx = getelementptr inbounds i32, i32* %var2, i64 %indvars.iv |
| %1 = load i32, i32* %arrayidx, align 4 |
| %2 = load i32, i32* %arrayidx5, align 4 |
| %add = add nsw i32 %2, %1 |
| store i32 %add, i32* %arrayidx5, align 4 |
| %3 = load i32, i32* %arrayidx5, align 4 |
| %4 = add nsw i32 %3, 1 |
| store i32 %4, i32* %arrayidx5, align 4 |
| %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, %itr |
| br i1 %exitcond, label %for.inc8, label %for.body3 |
| |
| for.inc8: ; preds = %for.body3, %for.cond1.preheader |
| %j.1.lcssa = phi i32 [ %j.022, %for.cond1.preheader ], [ %itr, %for.body3 ] |
| %indvars.iv.next24 = add nuw nsw i64 %indvars.iv23, 1 |
| %lftr.wideiv25 = trunc i64 %indvars.iv.next24 to i32 |
| %exitcond26 = icmp eq i32 %lftr.wideiv25, %itr |
| br i1 %exitcond26, label %for.end10, label %for.cond1.preheader |
| |
| for.end10: ; preds = %for.inc8, %entry |
| ret i32 undef |
| } |
| |