1; This test makes sure that loop will not be unrolled in vectorization if VF computed 2; equals to 1. 3; RUN: opt < %s -loop-vectorize -S | FileCheck %s 4 5; Make sure there are no geps being merged. 6; CHECK-LABEL: @foo( 7; CHECK: getelementptr 8; CHECK-NOT: getelementptr 9 10@N = common global i32 0, align 4 11@a = common global [1000 x i32] zeroinitializer, align 16 12 13define void @foo() #0 { 14entry: 15 %0 = load i32, i32* @N, align 4 16 %cmp5 = icmp sgt i32 %0, 0 17 br i1 %cmp5, label %for.body.lr.ph, label %for.end 18 19for.body.lr.ph: ; preds = %entry 20 %conv = sext i32 %0 to i64 21 br label %for.body 22 23for.body: ; preds = %for.body.lr.ph, %for.body 24 %i.06 = phi i64 [ 0, %for.body.lr.ph ], [ %inc, %for.body ] 25 %mul = mul nuw nsw i64 %i.06, 7 26 %arrayidx = getelementptr inbounds [1000 x i32], [1000 x i32]* @a, i64 0, i64 %mul 27 store i32 3, i32* %arrayidx, align 4 28 %inc = add nuw nsw i64 %i.06, 1 29 %cmp = icmp slt i64 %inc, %conv 30 br i1 %cmp, label %for.body, label %for.end.loopexit 31 32for.end.loopexit: ; preds = %for.body 33 br label %for.end 34 35for.end: ; preds = %for.end.loopexit, %entry 36 ret void 37} 38