[Bug target/90878] [8/9/10 Regression] integer -> SSE register move isn't generated

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90878

--- Comment #3 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Uroš Bizjak from comment #2)
> Why is this PR marked as a regression?

GCC 7 doesn't use memory:

[hjl@gnu-cfl-1 sse-move]$ cat x.s
        .file   "x.i"
        .text
        .p2align 4,,15
        .globl  foo
        .type   foo, @function
foo:
.LFB0:
        .cfi_startproc
        vmovd   %xmm0, %eax
        vxorpd  %xmm0, %xmm0, %xmm0
        andl    $2147483647, %eax
        vmovd   %eax, %xmm1
        vcvtss2sd       %xmm1, %xmm0, %xmm0
        ret
        .cfi_endproc
.LFE0:
        .size   foo, .-foo
        .ident  "GCC: (GNU) 7.3.1 20181128"
        .section        .note.GNU-stack,"",@progbits
[hjl@gnu-cfl-1 sse-move]$