1 ; RUN: opt < %s -loop-accesses -analyze | FileCheck %s 2 ; RUN: opt -passes='require<scalar-evolution>,require<aa>,loop(print-access-info)' -disable-output < %s 2>&1 | FileCheck %s 3 4 ; Test to confirm LAA will not find store to invariant address. 5 ; Inner loop has no store to invariant address. 6 ; 7 ; for(; i < itr; i++) { 8 ; for(; j < itr; j++) { 9 ; var2[j] = var2[j] + var1[i]; 10 ; } 11 ; } 12 13 ; CHECK: Store to invariant address was not found in loop. 14 ; CHECK-NOT: Store to invariant address was found in loop. 15 16 17 define i32 @foo(i32* nocapture readonly %var1, i32* nocapture %var2, i32 %itr) #0 { 18 entry: 19 %cmp20 = icmp eq i32 %itr, 0 20 br i1 %cmp20, label %for.end10, label %for.cond1.preheader 21 22 for.cond1.preheader: ; preds = %entry, %for.inc8 23 %indvars.iv23 = phi i64 [ %indvars.iv.next24, %for.inc8 ], [ 0, %entry ] 24 %j.022 = phi i32 [ %j.1.lcssa, %for.inc8 ], [ 0, %entry ] 25 %cmp218 = icmp ult i32 %j.022, %itr 26 br i1 %cmp218, label %for.body3.lr.ph, label %for.inc8 27 28 for.body3.lr.ph: ; preds = %for.cond1.preheader 29 %arrayidx5 = getelementptr inbounds i32, i32* %var1, i64 %indvars.iv23 30 %0 = zext i32 %j.022 to i64 31 br label %for.body3 32 33 for.body3: ; preds = %for.body3, %for.body3.lr.ph 34 %indvars.iv = phi i64 [ %0, %for.body3.lr.ph ], [ %indvars.iv.next, %for.body3 ] 35 %arrayidx = getelementptr inbounds i32, i32* %var2, i64 %indvars.iv 36 %1 = load i32, i32* %arrayidx, align 4 37 %2 = load i32, i32* %arrayidx5, align 4 38 %add = add nsw i32 %2, %1 39 store i32 %add, i32* %arrayidx, align 4 40 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 41 %lftr.wideiv = trunc i64 %indvars.iv.next to i32 42 %exitcond = icmp eq i32 %lftr.wideiv, %itr 43 br i1 %exitcond, label %for.inc8, label %for.body3 44 45 for.inc8: ; preds = %for.body3, %for.cond1.preheader 46 %j.1.lcssa = phi i32 [ %j.022, %for.cond1.preheader ], [ %itr, %for.body3 ] 47 %indvars.iv.next24 = add nuw nsw i64 %indvars.iv23, 1 48 %lftr.wideiv25 = trunc i64 %indvars.iv.next24 to i32 49 %exitcond26 = icmp eq i32 %lftr.wideiv25, %itr 50 br i1 %exitcond26, label %for.end10, label %for.cond1.preheader 51 52 for.end10: ; preds = %for.inc8, %entry 53 ret i32 undef 54 } 55 56
