[Bug target/95134] New: -ffreestanding should avoid libcall

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95134

            Bug ID: 95134
           Summary: -ffreestanding should avoid libcall
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: hjl.tools at gmail dot com
                CC: ubizjak at gmail dot com
  Target Milestone: ---
            Target: i386, x86-64

[hjl@gnu-cfl-2 freestand]$ cat x.i 
struct foo
{
  char array[257];
};

extern struct foo x;

void
func (struct foo i)
{
  x = i;
}
[hjl@gnu-cfl-2 freestand]$ make x.s
/export/build/gnu/tools-build/gcc-gitlab-debug/build-x86_64-linux/gcc/xgcc
-B/export/build/gnu/tools-build/gcc-gitlab-debug/build-x86_64-linux/gcc/ -O2 -W
-ffreestanding -mtune=pentium -m32 -S x.i
[hjl@gnu-cfl-2 freestand]$ cat x.s
        .file   "x.i"
        .text
        .p2align 4
        .globl  func
        .type   func, @function
func:
.LFB0:
        .cfi_startproc
        subl    $16, %esp
        .cfi_def_cfa_offset 20
        pushl   $257
        .cfi_def_cfa_offset 24
        leal    24(%esp), %eax
        pushl   %eax
        .cfi_def_cfa_offset 28
        pushl   $x
        .cfi_def_cfa_offset 32
        call    memcpy
        addl    $28, %esp
        .cfi_def_cfa_offset 4
        ret
        .cfi_endproc
.LFE0:
        .size   func, .-func
        .ident  "GCC: (GNU) 11.0.0 20200514 (experimental)"
        .section        .note.GNU-stack,"",@progbits
[hjl@gnu-cfl-2 freestand]$ 

x86 backend should avoid libcall if flag_hosted is false.