[PATCH 5/5] x86: Add 'V' register operand modifier
Jeff Law
law@redhat.com
Thu Jan 11 23:17:00 GMT 2018
On 01/07/2018 03:59 PM, H.J. Lu wrote:
> Add 'V', a special modifier which prints the name of the full integer
> register without '%'. For
>
> extern void (*func_p) (void);
>
> void
> foo (void)
> {
> asm ("call __x86_indirect_thunk_%V0" : : "a" (func_p));
> }
>
> it generates:
>
> foo:
> movq func_p(%rip), %rax
> call __x86_indirect_thunk_rax
> ret
>
> gcc/
>
> * config/i386/i386.c (print_reg): Print the name of the full
> integer register without '%'.
> (ix86_print_operand): Handle 'V'.
> * doc/extend.texi: Document 'V' modifier.
>
> gcc/testsuite/
>
> * gcc.target/i386/indirect-thunk-register-4.c: New test.
No comments from me. Uros has final call here.
jeff
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