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