1 ; RUN: opt -slp-vectorizer -mtriple=x86_64-apple-macosx10.9.0 -mcpu=corei7-avx -S < %s | FileCheck %s
2 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
3 target triple = "x86_64-apple-macosx10.9.0"
6 ; This test used to crash because we were following phi chains incorrectly.
7 ; We used indices to get the incoming value of two phi nodes rather than
8 ; incoming block lookup.
9 ; This can give wrong results when the ordering of incoming
10 ; edges in the two phi nodes don't match.
14 %1 = type { double, double }
15 %2 = type { double, double }
18 ;define fastcc void @bar() {
20 %1 = getelementptr inbounds %0* undef, i64 0, i32 1, i32 0
21 %2 = getelementptr inbounds %0* undef, i64 0, i32 1, i32 1
22 %3 = getelementptr inbounds %0* undef, i64 0, i32 1, i32 0
23 %4 = getelementptr inbounds %0* undef, i64 0, i32 1, i32 1
24 %5 = getelementptr inbounds %0* undef, i64 0, i32 1, i32 0
25 %6 = getelementptr inbounds %0* undef, i64 0, i32 1, i32 1
28 ; <label>:7 ; preds = %18, %17, %17, %0
29 %8 = phi double [ 2.800000e+01, %0 ], [ %11, %18 ], [ %11, %17 ], [ %11, %17 ]
30 %9 = phi double [ 1.800000e+01, %0 ], [ %10, %18 ], [ %10, %17 ], [ %10, %17 ]
31 store double %9, double* %1, align 8
32 store double %8, double* %2, align 8
33 %10 = load double* %3, align 8
34 %11 = load double* %4, align 8
35 br i1 undef, label %12, label %13
37 ; <label>:12 ; preds = %7
40 ; <label>:13 ; preds = %7
41 store double %10, double* %5, align 8
42 store double %11, double* %6, align 8
43 br i1 undef, label %14, label %15
45 ; <label>:14 ; preds = %13
48 ; <label>:15 ; preds = %14, %13
49 br i1 undef, label %16, label %17
51 ; <label>:16 ; preds = %15
54 ; <label>:17 ; preds = %15
55 switch i32 undef, label %18 [
60 ; <label>:18 ; preds = %17
61 br i1 undef, label %7, label %19
63 ; <label>:19 ; preds = %18