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[j] = ++var2[i] + var1[j]; 9 ; } 10 ; } 11 12 ; CHECK: Store to invariant address was found in loop. 13 14 define void @foo(i32* nocapture %var1, i32* nocapture %var2, i32 %itr) #0 { 15 entry: 16 %cmp20 = icmp sgt i32 %itr, 0 17 br i1 %cmp20, label %for.cond1.preheader, label %for.end11 18 19 for.cond1.preheader: ; preds = %entry, %for.inc9 20 %indvars.iv23 = phi i64 [ %indvars.iv.next24, %for.inc9 ], [ 0, %entry ] 21 %j.022 = phi i32 [ %j.1.lcssa, %for.inc9 ], [ 0, %entry ] 22 %cmp218 = icmp slt i32 %j.022, %itr 23 br i1 %cmp218, label %for.body3.lr.ph, label %for.inc9 24 25 for.body3.lr.ph: ; preds = %for.cond1.preheader 26 %arrayidx = getelementptr inbounds i32, i32* %var2, i64 %indvars.iv23 27 %0 = sext i32 %j.022 to i64 28 br label %for.body3 29 30 for.body3: ; preds = %for.body3, %for.body3.lr.ph 31 %indvars.iv = phi i64 [ %0, %for.body3.lr.ph ], [ %indvars.iv.next, %for.body3 ] 32 %1 = load i32, i32* %arrayidx, align 4 33 %inc = add nsw i32 %1, 1 34 store i32 %inc, i32* %arrayidx, align 4 35 %arrayidx5 = getelementptr inbounds i32, i32* %var1, i64 %indvars.iv 36 %2 = load i32, i32* %arrayidx5, align 4 37 %add = add nsw i32 %inc, %2 38 store i32 %add, i32* %arrayidx5, align 4 39 %indvars.iv.next = add 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.inc9, label %for.body3 43 44 for.inc9: ; 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.end11, label %for.cond1.preheader 50 51 for.end11: ; preds = %for.inc9, %entry 52 ret void 53 } 54
