[Bug ipa/81214] GCC target_clone support does not work for global functions with no references

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81214

--- Comment #7 from Martin Liška <marxin at gcc dot gnu.org> ---
(In reply to Dominique d'Humieres from comment #6)
> At revision r249851 I see the following regression on darwin
> 
> FAIL: gcc.target/i386/mvc6.c (test for excess errors)
> UNRESOLVED: gcc.target/i386/mvc6.c scan-assembler punpcklbw
> UNRESOLVED: gcc.target/i386/mvc6.c scan-assembler vpshufb
> 
> % gcc8 -c -O3 /opt/gcc/_clean/gcc/testsuite/gcc.target/i386/mvc6.c
> /opt/gcc/_clean/gcc/testsuite/gcc.target/i386/mvc6.c:8:1: error: the call
> requires ifunc, which is not supported by this target
>  foo(char *in, char *out, int size)
>  ^~~
> 
> I suspect this to be caused by revision r249840.

Fixed by Rainer's commit r249912.