1; RUN: opt -indvars -loop-vectorize -force-vector-width=2 -force-vector-interleave=1 -S < %s | FileCheck %s 2 3target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" 4 5; We must not vectorize this loop. %add55 is not reduction. Its value is used 6; multiple times. 7 8; PR18526 9 10; CHECK: multiple_use_of_value 11; CHECK-NOT: <2 x i32> 12 13define void @multiple_use_of_value() { 14entry: 15 %n = alloca i32, align 4 16 %k7 = alloca i32, align 4 17 %nf = alloca i32, align 4 18 %0 = load i32, i32* %k7, align 4 19 %.neg1 = sub i32 0, %0 20 %n.promoted = load i32, i32* %n, align 4 21 %nf.promoted = load i32, i32* %nf, align 4 22 br label %for.body 23 24for.body: 25 %inc107 = phi i32 [ undef, %entry ], [ %inc10, %for.body ] 26 %inc6 = phi i32 [ %nf.promoted, %entry ], [ undef, %for.body ] 27 %add55 = phi i32 [ %n.promoted, %entry ], [ %add5, %for.body ] 28 %.neg2 = sub i32 0, %inc6 29 %add.neg = add i32 0, %add55 30 %add4.neg = add i32 %add.neg, %.neg1 31 %sub = add i32 %add4.neg, %.neg2 32 %add5 = add i32 %sub, %add55 33 %inc10 = add i32 %inc107, 1 34 %cmp = icmp ult i32 %inc10, 61 35 br i1 %cmp, label %for.body, label %for.end 36 37for.end: 38 %add5.lcssa = phi i32 [ %add5, %for.body ] 39 store i32 %add5.lcssa, i32* %n, align 4 40 ret void 41} 42