1; RUN: llc < %s -mtriple=x86_64-unknown-unknown | FileCheck %s
2
3; When the extractelement is converted to a load the store can be re-used.
4; This will, however, introduce a cycle into the selection DAG (the load
5; of the extractelement index is dependent on the store, and so after the
6; conversion it becomes dependent on the new load, which is dependent on
7; the index).  Make sure we skip the store, and conservatively instead
8; use a store to the stack.
9
10define float @foo(i32* %i, <4 x float>* %v) {
11; CHECK-LABEL: foo:
12; CHECK:    movaps %xmm0, -[[OFFSET:[0-9]+]](%rsp)
13; CHECK:    movss -[[OFFSET]](%rsp,{{.*}}), %xmm0 {{.*}}
14; CHECK-NEXT:    retq
15  %1 = load <4 x float>, <4 x float>* %v, align 16
16  %mul = fmul <4 x float> %1, %1
17  store <4 x float> %mul, <4 x float>* %v, align 16
18  %2 = load i32, i32* %i, align 4
19  %vecext = extractelement <4 x float> %mul, i32 %2
20  ret float %vecext
21}
22