File: int_sideeffect.ll

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llvm-toolchain-11 1%3A11.0.1-2
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; RUN: opt -S < %s -load-store-vectorizer | FileCheck %s
; RUN: opt -S < %s -passes='function(load-store-vectorizer)' | FileCheck %s

declare void @llvm.sideeffect()

; load-store vectorization across a @llvm.sideeffect.

; CHECK-LABEL: test
; CHECK: load <4 x float>
; CHECK: store <4 x float>
define void @test(float* %p) {
    %p0 = getelementptr float, float* %p, i64 0
    %p1 = getelementptr float, float* %p, i64 1
    %p2 = getelementptr float, float* %p, i64 2
    %p3 = getelementptr float, float* %p, i64 3
    %l0 = load float, float* %p0, align 16
    %l1 = load float, float* %p1
    %l2 = load float, float* %p2
    call void @llvm.sideeffect()
    %l3 = load float, float* %p3
    store float %l0, float* %p0, align 16
    call void @llvm.sideeffect()
    store float %l1, float* %p1
    store float %l2, float* %p2
    store float %l3, float* %p3
    ret void
}