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; RUN: opt < %s -basicaa -slp-vectorizer -S -mtriple=x86_64-apple-macosx10.8.0 -mcpu=corei7
target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-apple-darwin13.3.0"
@a = common global double 0.000000e+00, align 8
define i32 @fn1() {
entry:
%init = load double* @a, align 8
br label %loop
loop:
%phi = phi double [ %add2, %loop ], [ %init, %entry ]
%postadd1_phi = phi double [ %postadd1, %loop ], [ %init, %entry ]
%postadd2_phi = phi double [ %postadd2, %loop ], [ %init, %entry ]
%add1 = fadd double %postadd1_phi, undef
%add2 = fadd double %postadd2_phi, %phi
%mul2 = fmul double %add2, 0.000000e+00
%binaryop_B = fadd double %postadd1_phi, %mul2
%mul1 = fmul double %add1, 0.000000e+00
%tmp = fadd double %postadd2_phi, 0.000000e+00
; tryToVectorize() starts with this binary instruction.
; At the same time vectorization wraps around the loop, vectorizes
; postadd1/2 and eventually binary_V and tmp. So binary_V itself is replaced
; with a vector instruction.
; The SLPVectorizer crashed because it tried to use binary_V
; after vectorization to re-arrange instructions.
%binary_V = fadd double %mul1, %binaryop_B
%postadd1 = fadd double %binary_V, 0.000000e+00
%postadd2 = fadd double %tmp, 1.000000e+00
%tobool = fcmp une double %postadd1, 0.000000e+00
br i1 %tobool, label %exit, label %loop
exit:
ret i32 1
}
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