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