int Foo0(int index) {
    return Impl.ProductsArray[index];
}

int Foo0a(int index) {
    ref int rawArray = ref MemoryMarshal.GetArrayDataReference(Impl.ProductsArray);
    return Unsafe.AddByteOffset(ref rawArray, (IntPtr)(index * sizeof(int)));
}

int Foo1(int index) {
    return Impl.ProductsPtr[index];
}

static class Impl {
    internal static readonly int[] ProductsArray = new int[] { 0x090000,0x000900,0x040102,0x010402 };
    internal static ReadOnlySpan<byte> ProductsSpan => new byte[] { 0x00,0x00,0x09,0x00, 0x00,0x09,0x00,0x00, 0x02,0x01,0x04,0x00, 0x02,0x04,0x01,0x00 };
    internal static readonly unsafe int* ProductsPtr = (int*)Unsafe.AsPointer(ref Unsafe.AsRef(ProductsSpan.GetPinnableReference()));
}

---

<Main>g__Foo0|4_0 (Int32)
L0000   push    rsi
L0001   sub rsp, 0x20
L0005   mov esi, ecx
L0007   mov rcx, 0x7ffa20a8cde0
L0011   mov edx, 1
L0016   call    0x00007ffa7fb391e0
L001b   mov rax, [rax]
L001e   cmp esi, [rax+8]
L0021   jae short L0030
L0023   movsxd  rdx, esi
L0026   mov eax, [rax+rdx*4+0x10]
L002a   add rsp, 0x20
L002e   pop rsi
L002f   ret
L0030   call    0x00007ffa7fb3abc0
L0035   int3

<Main>g__Foo0a|4_1 (Int32)
L0000   push    rsi
L0001   sub rsp, 0x20
L0005   mov esi, ecx
L0007   mov rcx, 0x7ffa20a8cde0
L0011   mov edx, 1
L0016   call    0x00007ffa7fb391e0
L001b   mov rax, [rax]
L001e   cmp [rax], eax
L0020   add rax, 0x10
L0024   shl esi, 2
L0027   movsxd  rdx, esi
L002a   mov eax, [rax+rdx]
L002d   add rsp, 0x20
L0031   pop rsi
L0032   ret

<Main>g__Foo1|4_2 (Int32)
L0000   push    rsi
L0001   sub rsp, 0x20
L0005   mov esi, ecx
L0007   mov rcx, 0x7ffa20a8cde0
L0011   mov edx, 1
L0016   call    0x00007ffa7fb393b0
L001b   mov rax, [rax+8]
L001f   movsxd  rdx, esi
L0022   mov eax, [rax+rdx*4]
L0025   add rsp, 0x20
L0029   pop rsi
L002a   ret