1; RUN: opt < %s -loop-vectorize -force-vector-width=4 -verify-scev-maps -S |FileCheck %s 2 3; SCEV expansion uses existing value when the SCEV has no AddRec expr. 4; CHECK: select 5; CHECK-NOT: select 6 7@a = common global [1000 x i16] zeroinitializer, align 16 8 9define i32 @foo(i32 %x, i32 %y) { 10entry: 11 %cmp = icmp slt i32 %x, %y 12 %cond = select i1 %cmp, i32 %x, i32 %y 13 %cmp1.10 = icmp sgt i32 %cond, 0 14 br i1 %cmp1.10, label %for.body.lr.ph, label %for.end 15 16for.body.lr.ph: ; preds = %entry 17 %tmp = sext i32 %cond to i64 18 br label %for.body 19 20for.body: ; preds = %for.body, %for.body.lr.ph 21 %indvars.iv = phi i64 [ 0, %for.body.lr.ph ], [ %indvars.iv.next, %for.body ] 22 %total.011 = phi i32 [ 0, %for.body.lr.ph ], [ %add, %for.body ] 23 %arrayidx = getelementptr inbounds [1000 x i16], [1000 x i16]* @a, i64 0, i64 %indvars.iv 24 %tmp1 = load i16, i16* %arrayidx, align 2 25 %conv = sext i16 %tmp1 to i32 26 %add = add nsw i32 %conv, %total.011 27 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 28 %cmp1 = icmp slt i64 %indvars.iv.next, %tmp 29 br i1 %cmp1, label %for.body, label %for.end.loopexit 30 31for.end.loopexit: ; preds = %for.body 32 %add.lcssa = phi i32 [ %add, %for.body ] 33 br label %for.end 34 35for.end: ; preds = %for.end.loopexit, %entry 36 %total.0.lcssa = phi i32 [ 0, %entry ], [ %add.lcssa, %for.end.loopexit ] 37 ret i32 %total.0.lcssa 38} 39