1 ; RUN: opt -loop-vectorize -force-vector-width=2 -force-vector-unroll=1 -S < %s | FileCheck %s 2 @a = common global [128 x i32] zeroinitializer, align 16 3 4 ;; Must not vectorize division reduction. Division is lossy. 5 define i32 @g() { 6 entry: 7 br label %for.body 8 9 for.body: 10 ; CHECK-LABEL: @g( 11 ; CHECK-NOT: sdiv <2 x i32> 12 %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ] 13 %r.05 = phi i32 [ 80, %entry ], [ %div, %for.body ] 14 %arrayidx = getelementptr inbounds [128 x i32]* @a, i64 0, i64 %indvars.iv 15 %0 = load i32* %arrayidx, align 4 16 %div = sdiv i32 %r.05, %0 17 %indvars.iv.next = add i64 %indvars.iv, 1 18 %lftr.wideiv = trunc i64 %indvars.iv.next to i32 19 %exitcond = icmp eq i32 %lftr.wideiv, 1024 20 br i1 %exitcond, label %for.end, label %for.body 21 22 for.end: 23 ret i32 %div 24 } 25
