1 ; RUN: opt -indvars -loop-vectorize -force-vector-width=2 -force-vector-unroll=1 -S < %s | FileCheck %s 2 3 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" 4 target triple = "x86_64-apple-macosx10.9.0" 5 6 ; We must not vectorize this loop. %add55 is not reduction. Its value is used 7 ; multiple times. 8 9 ; PR18526 10 11 ; CHECK: multiple_use_of_value 12 ; CHECK-NOT: <2 x i32> 13 14 define void @multiple_use_of_value() { 15 entry: 16 %n = alloca i32, align 4 17 %k7 = alloca i32, align 4 18 %nf = alloca i32, align 4 19 %0 = load i32* %k7, align 4 20 %.neg1 = sub i32 0, %0 21 %n.promoted = load i32* %n, align 4 22 %nf.promoted = load i32* %nf, align 4 23 br label %for.body 24 25 for.body: 26 %inc107 = phi i32 [ undef, %entry ], [ %inc10, %for.body ] 27 %inc6 = phi i32 [ %nf.promoted, %entry ], [ undef, %for.body ] 28 %add55 = phi i32 [ %n.promoted, %entry ], [ %add5, %for.body ] 29 %.neg2 = sub i32 0, %inc6 30 %add.neg = add i32 0, %add55 31 %add4.neg = add i32 %add.neg, %.neg1 32 %sub = add i32 %add4.neg, %.neg2 33 %add5 = add i32 %sub, %add55 34 %inc10 = add i32 %inc107, 1 35 %cmp = icmp ult i32 %inc10, 61 36 br i1 %cmp, label %for.body, label %for.end 37 38 for.end: 39 %add5.lcssa = phi i32 [ %add5, %for.body ] 40 store i32 %add5.lcssa, i32* %n, align 4 41 ret void 42 } 43
