1 ; RUN: opt < %s -loop-accesses -analyze | FileCheck %s 2 3 ; Test to confirm LAA will find store to invariant address. 4 ; Inner loop has a store to invariant address. 5 ; 6 ; for(; i < itr; i++) { 7 ; for(; j < itr; j++) { 8 ; var1[i] = var2[j] + var1[i]; 9 ; } 10 ; } 11 12 ; CHECK: Store to invariant address was found in loop. 13 ; CHECK-NOT: Store to invariant address was not found in loop. 14 15 define i32 @foo(i32* nocapture %var1, i32* nocapture readonly %var2, i32 %itr) #0 { 16 entry: 17 %cmp20 = icmp eq i32 %itr, 0 18 br i1 %cmp20, label %for.end10, label %for.cond1.preheader 19 20 for.cond1.preheader: ; preds = %entry, %for.inc8 21 %indvars.iv23 = phi i64 [ %indvars.iv.next24, %for.inc8 ], [ 0, %entry ] 22 %j.022 = phi i32 [ %j.1.lcssa, %for.inc8 ], [ 0, %entry ] 23 %cmp218 = icmp ult i32 %j.022, %itr 24 br i1 %cmp218, label %for.body3.lr.ph, label %for.inc8 25 26 for.body3.lr.ph: ; preds = %for.cond1.preheader 27 %arrayidx5 = getelementptr inbounds i32, i32* %var1, i64 %indvars.iv23 28 %0 = zext i32 %j.022 to i64 29 br label %for.body3 30 31 for.body3: ; preds = %for.body3, %for.body3.lr.ph 32 %indvars.iv = phi i64 [ %0, %for.body3.lr.ph ], [ %indvars.iv.next, %for.body3 ] 33 %arrayidx = getelementptr inbounds i32, i32* %var2, i64 %indvars.iv 34 %1 = load i32, i32* %arrayidx, align 4 35 %2 = load i32, i32* %arrayidx5, align 4 36 %add = add nsw i32 %2, %1 37 store i32 %add, i32* %arrayidx5, align 4 38 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 39 %lftr.wideiv = trunc i64 %indvars.iv.next to i32 40 %exitcond = icmp eq i32 %lftr.wideiv, %itr 41 br i1 %exitcond, label %for.inc8, label %for.body3 42 43 for.inc8: ; preds = %for.body3, %for.cond1.preheader 44 %j.1.lcssa = phi i32 [ %j.022, %for.cond1.preheader ], [ %itr, %for.body3 ] 45 %indvars.iv.next24 = add nuw nsw i64 %indvars.iv23, 1 46 %lftr.wideiv25 = trunc i64 %indvars.iv.next24 to i32 47 %exitcond26 = icmp eq i32 %lftr.wideiv25, %itr 48 br i1 %exitcond26, label %for.end10, label %for.cond1.preheader 49 50 for.end10: ; preds = %for.inc8, %entry 51 ret i32 undef 52 } 53 54
