1; RUN: opt < %s -basicaa -slp-vectorizer -dce -S -mtriple=x86_64-apple-macosx10.8.0 -mcpu=corei7-avx | FileCheck %s
2
3target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
4target triple = "x86_64-apple-macosx10.7.0"
5
6@.str = private unnamed_addr constant [6 x i8] c"bingo\00", align 1
7
8; We can't vectorize when the roots are used inside the tree.
9;CHECK-LABEL: @in_tree_user(
10;CHECK-NOT: load <2 x double>
11;CHECK: ret
12define void @in_tree_user(double* nocapture %A, i32 %n) {
13entry:
14  %conv = sitofp i32 %n to double
15  br label %for.body
16
17for.body:                                         ; preds = %for.inc, %entry
18  %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.inc ]
19  %0 = shl nsw i64 %indvars.iv, 1
20  %arrayidx = getelementptr inbounds double* %A, i64 %0
21  %1 = load double* %arrayidx, align 8
22  %mul1 = fmul double %conv, %1
23  %mul2 = fmul double %mul1, 7.000000e+00
24  %add = fadd double %mul2, 5.000000e+00
25  %BadValue = fadd double %add, %add    ; <------------------ In tree user.
26  %2 = or i64 %0, 1
27  %arrayidx6 = getelementptr inbounds double* %A, i64 %2
28  %3 = load double* %arrayidx6, align 8
29  %mul8 = fmul double %conv, %3
30  %mul9 = fmul double %mul8, 4.000000e+00
31  %add10 = fadd double %mul9, 9.000000e+00
32  %cmp11 = fcmp ogt double %add, %add10
33  br i1 %cmp11, label %if.then, label %for.inc
34
35if.then:                                          ; preds = %for.body
36  %call = tail call i32 (i8*, ...)* @printf(i8* getelementptr inbounds ([6 x i8]* @.str, i64 0, i64 0))
37  br label %for.inc
38
39for.inc:                                          ; preds = %for.body, %if.then
40  %indvars.iv.next = add i64 %indvars.iv, 1
41  %lftr.wideiv = trunc i64 %indvars.iv.next to i32
42  %exitcond = icmp eq i32 %lftr.wideiv, 100
43  br i1 %exitcond, label %for.end, label %for.body
44
45for.end:                                          ; preds = %for.inc
46  ret void
47}
48
49declare i32 @printf(i8* nocapture, ...)
50
51